3 #include "dpsoftrast.h"
10 typedef enum bool {false, true} bool;
13 #if defined(__GNUC__) || (defined(_MSC_VER) && _MSC_VER >= 1400)
14 #define RESTRICT __restrict
20 #define GL_FRONT_LEFT 0x0400
21 #define GL_FRONT_RIGHT 0x0401
22 #define GL_BACK_LEFT 0x0402
23 #define GL_BACK_RIGHT 0x0403
24 #define GL_FRONT 0x0404
25 #define GL_BACK 0x0405
26 #define GL_LEFT 0x0406
27 #define GL_RIGHT 0x0407
28 #define GL_FRONT_AND_BACK 0x0408
29 #define GL_AUX0 0x0409
30 #define GL_AUX1 0x040A
31 #define GL_AUX2 0x040B
32 #define GL_AUX3 0x040C
34 #define GL_NEVER 0x0200
35 #define GL_LESS 0x0201
36 #define GL_EQUAL 0x0202
37 #define GL_LEQUAL 0x0203
38 #define GL_GREATER 0x0204
39 #define GL_NOTEQUAL 0x0205
40 #define GL_GEQUAL 0x0206
41 #define GL_ALWAYS 0x0207
45 #define GL_SRC_COLOR 0x0300
46 #define GL_ONE_MINUS_SRC_COLOR 0x0301
47 #define GL_DST_COLOR 0x0306
48 #define GL_ONE_MINUS_DST_COLOR 0x0307
49 #define GL_SRC_ALPHA 0x0302
50 #define GL_ONE_MINUS_SRC_ALPHA 0x0303
51 #define GL_DST_ALPHA 0x0304
52 #define GL_ONE_MINUS_DST_ALPHA 0x0305
53 #define GL_SRC_ALPHA_SATURATE 0x0308
54 #define GL_CONSTANT_COLOR 0x8001
55 #define GL_ONE_MINUS_CONSTANT_COLOR 0x8002
56 #define GL_CONSTANT_ALPHA 0x8003
57 #define GL_ONE_MINUS_CONSTANT_ALPHA 0x8004
59 typedef enum DPSOFTRAST_ARRAY_e
61 DPSOFTRAST_ARRAY_POSITION,
62 DPSOFTRAST_ARRAY_COLOR,
63 DPSOFTRAST_ARRAY_TEXCOORD0,
64 DPSOFTRAST_ARRAY_TEXCOORD1,
65 DPSOFTRAST_ARRAY_TEXCOORD2,
66 DPSOFTRAST_ARRAY_TEXCOORD3,
67 DPSOFTRAST_ARRAY_TEXCOORD4,
68 DPSOFTRAST_ARRAY_TEXCOORD5,
69 DPSOFTRAST_ARRAY_TEXCOORD6,
70 DPSOFTRAST_ARRAY_TEXCOORD7,
71 DPSOFTRAST_ARRAY_TOTAL
75 typedef struct DPSOFTRAST_Texture_s
82 DPSOFTRAST_TEXTURE_FILTER filter;
86 int mipmap[DPSOFTRAST_MAXMIPMAPS][5];
90 typedef struct DPSOFTRAST_State_User_s
106 float polygonoffset[2];
109 DPSOFTRAST_State_User;
111 #define DPSOFTRAST_MAXSUBSPAN 16
113 typedef struct DPSOFTRAST_State_Draw_Span_s
115 int start; // pixel index
116 int length; // pixel count
117 int startx; // usable range (according to pixelmask)
118 int endx; // usable range (according to pixelmask)
119 int mip; // which mipmap of the texture(s) to use on this
120 unsigned char *pixelmask; // true for pixels that passed depth test, false for others
121 // [0][n][] is start interpolant values (projected)
122 // [1][n][] is end interpolant values (projected)
123 // [0][DPSOFTRAST_ARRAY_TOTAL][] is start screencoord4f
124 // [1][DPSOFTRAST_ARRAY_TOTAL][] is end screencoord4f
125 // NOTE: screencoord4f[3] is W (basically 1/Z), useful for depthbuffer
126 float data[2][DPSOFTRAST_ARRAY_TOTAL+1][4];
128 DPSOFTRAST_State_Draw_Span;
130 #define DPSOFTRAST_DRAW_MAXSPANQUEUE 1024
132 typedef struct DPSOFTRAST_State_Draw_s
136 float *in_array4f[DPSOFTRAST_ARRAY_TOTAL];
137 float *post_array4f[DPSOFTRAST_ARRAY_TOTAL];
138 float *screencoord4f;
140 // spans are queued in this structure for dispatch to the pixel shader,
141 // partly to improve cache locality, partly for batching purposes, spans
142 // are flushed before DrawTriangles returns to caller
144 DPSOFTRAST_State_Draw_Span spanqueue[DPSOFTRAST_DRAW_MAXSPANQUEUE];
146 DPSOFTRAST_State_Draw;
148 #define DPSOFTRAST_VALIDATE_FB 1
149 #define DPSOFTRAST_VALIDATE_DEPTHFUNC 2
150 #define DPSOFTRAST_VALIDATE_BLENDFUNC 4
151 #define DPSOFTRAST_VALIDATE_DRAW (DPSOFTRAST_VALIDATE_FB | DPSOFTRAST_VALIDATE_DEPTHFUNC | DPSOFTRAST_VALIDATE_BLENDFUNC)
153 typedef enum DPSOFTRAST_BLENDMODE_e
155 DPSOFTRAST_BLENDMODE_OPAQUE,
156 DPSOFTRAST_BLENDMODE_ALPHA,
157 DPSOFTRAST_BLENDMODE_ADDALPHA,
158 DPSOFTRAST_BLENDMODE_ADD,
159 DPSOFTRAST_BLENDMODE_INVMOD,
160 DPSOFTRAST_BLENDMODE_MUL,
161 DPSOFTRAST_BLENDMODE_MUL2,
162 DPSOFTRAST_BLENDMODE_SUBALPHA,
163 DPSOFTRAST_BLENDMODE_PSEUDOALPHA,
164 DPSOFTRAST_BLENDMODE_TOTAL
166 DPSOFTRAST_BLENDMODE;
168 typedef struct DPSOFTRAST_State_s
170 // DPSOFTRAST_VALIDATE_ flags
176 unsigned int *fb_depthpixels;
177 unsigned int *fb_colorpixels[4];
179 const float *pointer_vertex3f;
180 const float *pointer_color4f;
181 const unsigned char *pointer_color4ub;
182 const float *pointer_texcoordf[DPSOFTRAST_MAXTEXCOORDARRAYS];
185 int stride_texcoord[DPSOFTRAST_MAXTEXCOORDARRAYS];
186 int components_texcoord[DPSOFTRAST_MAXTEXCOORDARRAYS];
187 DPSOFTRAST_Texture *texbound[DPSOFTRAST_MAXTEXTUREUNITS];
190 int shader_permutation;
191 float uniform4f[DPSOFTRAST_UNIFORM_TOTAL*4];
192 int uniform1i[DPSOFTRAST_UNIFORM_TOTAL];
194 // derived values (DPSOFTRAST_VALIDATE_FB)
195 int fb_clearscissor[4];
197 int fb_viewportscissor[4];
198 float fb_viewportcenter[2];
199 float fb_viewportscale[2];
201 // derived values (DPSOFTRAST_VALIDATE_DEPTHFUNC)
204 // derived values (DPSOFTRAST_VALIDATE_BLENDFUNC)
209 int texture_firstfree;
210 DPSOFTRAST_Texture *texture;
215 const char *errorstring;
217 DPSOFTRAST_State_User user;
219 DPSOFTRAST_State_Draw draw;
223 DPSOFTRAST_State dpsoftrast;
225 #define DPSOFTRAST_DEPTHSCALE (1024.0f*1048576.0f)
226 #define DPSOFTRAST_BGRA8_FROM_RGBA32F(r,g,b,a) (((int)(r * 255.0f + 0.5f) << 16) | ((int)(g * 255.0f + 0.5f) << 8) | (int)(b * 255.0f + 0.5f) | ((int)(a * 255.0f + 0.5f) << 24))
227 #define DPSOFTRAST_DEPTH32_FROM_DEPTH32F(d) ((int)(DPSOFTRAST_DEPTHSCALE * (1-d)))
228 #define DPSOFTRAST_DRAW_MAXSPANLENGTH 256
230 void DPSOFTRAST_RecalcFB(void)
232 // calculate framebuffer scissor, viewport, viewport clipped by scissor,
233 // and viewport projection values
234 int x1, x2, x3, x4, x5, x6;
235 int y1, y2, y3, y4, y5, y6;
236 x1 = dpsoftrast.user.scissor[0];
237 x2 = dpsoftrast.user.scissor[0] + dpsoftrast.user.scissor[2];
238 x3 = dpsoftrast.user.viewport[0];
239 x4 = dpsoftrast.user.viewport[0] + dpsoftrast.user.viewport[2];
240 y1 = dpsoftrast.fb_height - dpsoftrast.user.scissor[1] - dpsoftrast.user.scissor[3];
241 y2 = dpsoftrast.fb_height - dpsoftrast.user.scissor[1];
242 y3 = dpsoftrast.fb_height - dpsoftrast.user.viewport[1] - dpsoftrast.user.viewport[3];
243 y4 = dpsoftrast.fb_height - dpsoftrast.user.viewport[1];
244 if (!dpsoftrast.user.scissortest) {x1 = 0;y1 = 0;x2 = dpsoftrast.fb_width;y2 = dpsoftrast.fb_height;}
246 if (x2 > dpsoftrast.fb_width) x2 = dpsoftrast.fb_width;
248 if (x4 > dpsoftrast.fb_width) x4 = dpsoftrast.fb_width;
250 if (y2 > dpsoftrast.fb_height) y2 = dpsoftrast.fb_height;
252 if (y4 > dpsoftrast.fb_height) y4 = dpsoftrast.fb_height;
253 x5 = x1;if (x5 < x3) x5 = x3;
254 x6 = x2;if (x6 > x4) x4 = x4;
255 y5 = y1;if (y5 < y3) y5 = y3;
256 y6 = y2;if (y6 > y4) y6 = y4;
257 dpsoftrast.fb_clearscissor[0] = x1;
258 dpsoftrast.fb_clearscissor[1] = y1;
259 dpsoftrast.fb_clearscissor[2] = x2 - x1;
260 dpsoftrast.fb_clearscissor[3] = y2 - y1;
261 dpsoftrast.fb_viewport[0] = x3;
262 dpsoftrast.fb_viewport[1] = y3;
263 dpsoftrast.fb_viewport[2] = x4 - x3;
264 dpsoftrast.fb_viewport[3] = y4 - y3;
265 dpsoftrast.fb_viewportscissor[0] = x5;
266 dpsoftrast.fb_viewportscissor[1] = y5;
267 dpsoftrast.fb_viewportscissor[2] = x6 - x5;
268 dpsoftrast.fb_viewportscissor[3] = y6 - y5;
269 dpsoftrast.fb_viewportcenter[0] = dpsoftrast.user.viewport[0] + 0.5f * dpsoftrast.user.viewport[2] - 0.5f;
270 dpsoftrast.fb_viewportcenter[1] = dpsoftrast.fb_height - dpsoftrast.user.viewport[1] - 0.5f * dpsoftrast.user.viewport[3] - 0.5f;
271 dpsoftrast.fb_viewportscale[0] = 0.5f * dpsoftrast.user.viewport[2];
272 dpsoftrast.fb_viewportscale[1] = -0.5f * dpsoftrast.user.viewport[3];
275 void DPSOFTRAST_RecalcDepthFunc(void)
277 dpsoftrast.fb_depthfunc = dpsoftrast.user.depthtest ? dpsoftrast.user.depthfunc : GL_ALWAYS;
280 int blendmodetable[][4] =
282 {DPSOFTRAST_BLENDMODE_OPAQUE, GL_ONE, GL_ZERO, false},
283 {DPSOFTRAST_BLENDMODE_ALPHA, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, false},
284 {DPSOFTRAST_BLENDMODE_ADDALPHA, GL_SRC_ALPHA, GL_ONE, false},
285 {DPSOFTRAST_BLENDMODE_ADD, GL_ONE, GL_ONE, false},
286 {DPSOFTRAST_BLENDMODE_INVMOD, GL_ZERO, GL_ONE_MINUS_SRC_COLOR, false},
287 {DPSOFTRAST_BLENDMODE_MUL, GL_ZERO, GL_SRC_COLOR, false},
288 {DPSOFTRAST_BLENDMODE_MUL, GL_DST_COLOR, GL_ZERO, false},
289 {DPSOFTRAST_BLENDMODE_MUL2, GL_DST_COLOR, GL_SRC_COLOR, false},
290 {DPSOFTRAST_BLENDMODE_PSEUDOALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA, false},
291 {DPSOFTRAST_BLENDMODE_SUBALPHA, GL_SRC_COLOR, GL_ONE, true}
294 void DPSOFTRAST_RecalcBlendFunc(void)
297 dpsoftrast.fb_blendmode = DPSOFTRAST_BLENDMODE_OPAQUE;
298 for (i = 0;i < (int)(sizeof(blendmodetable) / sizeof(blendmodetable[0]));i++)
300 if (dpsoftrast.user.blendfunc[0] == blendmodetable[i][1] && dpsoftrast.user.blendfunc[1] == blendmodetable[i][2] && dpsoftrast.user.blendsubtract == blendmodetable[i][3])
302 dpsoftrast.fb_blendmode = blendmodetable[i][0];
308 #define DPSOFTRAST_ValidateQuick(f) ((dpsoftrast.validate & (f)) ? (DPSOFTRAST_Validate(f), 0) : 0)
310 void DPSOFTRAST_Validate(int mask)
312 mask &= dpsoftrast.validate;
315 if (mask & DPSOFTRAST_VALIDATE_FB)
317 dpsoftrast.validate &= ~DPSOFTRAST_VALIDATE_FB;
318 DPSOFTRAST_RecalcFB();
320 if (mask & DPSOFTRAST_VALIDATE_DEPTHFUNC)
322 dpsoftrast.validate &= ~DPSOFTRAST_VALIDATE_DEPTHFUNC;
323 DPSOFTRAST_RecalcDepthFunc();
325 if (mask & DPSOFTRAST_VALIDATE_BLENDFUNC)
327 dpsoftrast.validate &= ~DPSOFTRAST_VALIDATE_BLENDFUNC;
328 DPSOFTRAST_RecalcBlendFunc();
332 DPSOFTRAST_Texture *DPSOFTRAST_Texture_GetByIndex(int index)
334 if (index >= 1 && index < dpsoftrast.texture_end && dpsoftrast.texture[index].bytes)
335 return &dpsoftrast.texture[index];
339 int DPSOFTRAST_Texture_New(int flags, int width, int height, int depth)
348 int sides = (flags & DPSOFTRAST_TEXTURE_FLAG_CUBEMAP) ? 6 : 1;
349 int texformat = flags & DPSOFTRAST_TEXTURE_FORMAT_COMPAREMASK;
350 DPSOFTRAST_Texture *texture;
351 if (width*height*depth < 1)
353 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: width, height or depth is less than 1";
356 if (width > DPSOFTRAST_TEXTURE_MAXSIZE || height > DPSOFTRAST_TEXTURE_MAXSIZE || depth > DPSOFTRAST_TEXTURE_MAXSIZE)
358 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: texture size is too large";
363 case DPSOFTRAST_TEXTURE_FORMAT_BGRA8:
364 case DPSOFTRAST_TEXTURE_FORMAT_RGBA8:
365 case DPSOFTRAST_TEXTURE_FORMAT_ALPHA8:
367 case DPSOFTRAST_TEXTURE_FORMAT_DEPTH:
368 if (flags & DPSOFTRAST_TEXTURE_FLAG_CUBEMAP)
370 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FORMAT_DEPTH only permitted on 2D textures";
375 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FORMAT_DEPTH only permitted on 2D textures";
378 if ((flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP) && (texformat == DPSOFTRAST_TEXTURE_FORMAT_DEPTH))
380 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FORMAT_DEPTH does not permit mipmaps";
385 if (depth != 1 && (flags & DPSOFTRAST_TEXTURE_FLAG_CUBEMAP))
387 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FLAG_CUBEMAP can not be used on 3D textures";
390 if (depth != 1 && (flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP))
392 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FLAG_MIPMAP can not be used on 3D textures";
395 if (depth != 1 && (flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP))
397 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FLAG_MIPMAP can not be used on 3D textures";
400 if ((flags & DPSOFTRAST_TEXTURE_FLAG_CUBEMAP) && (flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP))
402 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: DPSOFTRAST_TEXTURE_FLAG_MIPMAP can not be used on cubemap textures";
405 if ((width & (width-1)) || (height & (height-1)) || (depth & (depth-1)))
407 dpsoftrast.errorstring = "DPSOFTRAST_Texture_New: dimensions are not power of two";
410 // find first empty slot in texture array
411 for (texnum = dpsoftrast.texture_firstfree;texnum < dpsoftrast.texture_end;texnum++)
412 if (!dpsoftrast.texture[texnum].bytes)
414 dpsoftrast.texture_firstfree = texnum + 1;
415 if (dpsoftrast.texture_max <= texnum)
417 // expand texture array as needed
418 if (dpsoftrast.texture_max < 1024)
419 dpsoftrast.texture_max = 1024;
421 dpsoftrast.texture_max *= 2;
422 dpsoftrast.texture = (DPSOFTRAST_Texture *)realloc(dpsoftrast.texture, dpsoftrast.texture_max * sizeof(DPSOFTRAST_Texture));
424 if (dpsoftrast.texture_end <= texnum)
425 dpsoftrast.texture_end = texnum + 1;
426 texture = &dpsoftrast.texture[texnum];
427 memset(texture, 0, sizeof(*texture));
428 texture->flags = flags;
429 texture->width = width;
430 texture->height = height;
431 texture->depth = depth;
432 texture->sides = sides;
443 s = w * h * d * sides * 4;
444 texture->mipmap[mipmaps][0] = size;
445 texture->mipmap[mipmaps][1] = s;
446 texture->mipmap[mipmaps][2] = w;
447 texture->mipmap[mipmaps][3] = h;
448 texture->mipmap[mipmaps][4] = d;
451 if (w * h * d == 1 || !(flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP))
457 texture->mipmaps = mipmaps;
458 texture->size = size;
460 // allocate the pixels now
461 texture->bytes = calloc(1, size);
465 void DPSOFTRAST_Texture_Free(int index)
467 DPSOFTRAST_Texture *texture;
468 texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
470 free(texture->bytes);
471 texture->bytes = NULL;
472 memset(texture, 0, sizeof(*texture));
473 // adjust the free range and used range
474 if (dpsoftrast.texture_firstfree > index)
475 dpsoftrast.texture_firstfree = index;
476 while (dpsoftrast.texture_end > 0 && dpsoftrast.texture[dpsoftrast.texture_end-1].bytes == NULL)
477 dpsoftrast.texture_end--;
479 void DPSOFTRAST_Texture_CalculateMipmaps(int index)
481 int i, x, y, z, w, layer0, layer1, row0, row1;
482 unsigned char *o, *i0, *i1, *i2, *i3;
483 DPSOFTRAST_Texture *texture;
484 texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
485 if (texture->mipmaps <= 1)
487 for (i = 1;i < texture->mipmaps;i++)
489 for (z = 0;z < texture->mipmap[i][4];z++)
493 if (layer1 >= texture->mipmap[i-1][4])
494 layer1 = texture->mipmap[i-1][4]-1;
495 for (y = 0;y < texture->mipmap[i][3];y++)
499 if (row1 >= texture->mipmap[i-1][3])
500 row1 = texture->mipmap[i-1][3]-1;
501 o = texture->bytes + texture->mipmap[i ][0] + 4*(texture->mipmap[i ][3] * texture->mipmap[i ][2] * z + texture->mipmap[i ][2] * y );
502 i0 = texture->bytes + texture->mipmap[i-1][0] + 4*(texture->mipmap[i-1][3] * texture->mipmap[i-1][2] * layer0 + texture->mipmap[i-1][2] * row0);
503 i1 = texture->bytes + texture->mipmap[i-1][0] + 4*(texture->mipmap[i-1][3] * texture->mipmap[i-1][2] * layer0 + texture->mipmap[i-1][2] * row1);
504 i2 = texture->bytes + texture->mipmap[i-1][0] + 4*(texture->mipmap[i-1][3] * texture->mipmap[i-1][2] * layer1 + texture->mipmap[i-1][2] * row0);
505 i3 = texture->bytes + texture->mipmap[i-1][0] + 4*(texture->mipmap[i-1][3] * texture->mipmap[i-1][2] * layer1 + texture->mipmap[i-1][2] * row1);
506 w = texture->mipmap[i][2];
509 if (texture->mipmap[i-1][2] > 1)
511 // average 3D texture
512 for (x = 0;x < w;x++)
514 o[0] = (i0[0] + i0[4] + i1[0] + i1[4] + i2[0] + i2[4] + i3[0] + i3[4] + 4) >> 3;
515 o[1] = (i0[1] + i0[5] + i1[1] + i1[5] + i2[1] + i2[5] + i3[1] + i3[5] + 4) >> 3;
516 o[2] = (i0[2] + i0[6] + i1[2] + i1[6] + i2[2] + i2[6] + i3[2] + i3[6] + 4) >> 3;
517 o[3] = (i0[3] + i0[7] + i1[3] + i1[7] + i2[3] + i2[7] + i3[3] + i3[7] + 4) >> 3;
522 // average 3D mipmap with parent width == 1
523 for (x = 0;x < w;x++)
525 o[0] = (i0[0] + i1[0] + i2[0] + i3[0] + 2) >> 2;
526 o[1] = (i0[1] + i1[1] + i2[1] + i3[1] + 2) >> 2;
527 o[2] = (i0[2] + i1[2] + i2[2] + i3[2] + 2) >> 2;
528 o[3] = (i0[3] + i1[3] + i2[3] + i3[3] + 2) >> 2;
534 if (texture->mipmap[i-1][2] > 1)
536 // average 2D texture (common case)
537 for (x = 0;x < w;x++)
539 o[0] = (i0[0] + i0[4] + i1[0] + i1[4] + 2) >> 2;
540 o[1] = (i0[1] + i0[5] + i1[1] + i1[5] + 2) >> 2;
541 o[2] = (i0[2] + i0[6] + i1[2] + i1[6] + 2) >> 2;
542 o[3] = (i0[3] + i0[7] + i1[3] + i1[7] + 2) >> 2;
547 // 2D texture with parent width == 1
548 for (x = 0;x < w;x++)
550 o[0] = (i0[0] + i1[0] + 1) >> 1;
551 o[1] = (i0[1] + i1[1] + 1) >> 1;
552 o[2] = (i0[2] + i1[2] + 1) >> 1;
553 o[3] = (i0[3] + i1[3] + 1) >> 1;
561 void DPSOFTRAST_Texture_UpdatePartial(int index, int mip, const unsigned char *pixels, int blockx, int blocky, int blockwidth, int blockheight)
563 DPSOFTRAST_Texture *texture;
564 texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
568 dpsoftrast.errorstring = "DPSOFTRAST_Texture_UpdatePartial: Not implemented.";
570 void DPSOFTRAST_Texture_UpdateFull(int index, const unsigned char *pixels)
572 DPSOFTRAST_Texture *texture;
573 texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
575 memcpy(texture->bytes, pixels, texture->mipmap[0][1]);
576 DPSOFTRAST_Texture_CalculateMipmaps(index);
578 int DPSOFTRAST_Texture_GetWidth(int index, int mip)
580 DPSOFTRAST_Texture *texture;
581 texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return 0;
582 return texture->width;
584 int DPSOFTRAST_Texture_GetHeight(int index, int mip)
586 DPSOFTRAST_Texture *texture;
587 texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return 0;
588 return texture->height;
590 int DPSOFTRAST_Texture_GetDepth(int index, int mip)
592 DPSOFTRAST_Texture *texture;
593 texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return 0;
594 return texture->depth;
596 unsigned char *DPSOFTRAST_Texture_GetPixelPointer(int index, int mip)
598 DPSOFTRAST_Texture *texture;
599 texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return 0;
600 return texture->bytes;
602 void DPSOFTRAST_Texture_Filter(int index, DPSOFTRAST_TEXTURE_FILTER filter)
604 DPSOFTRAST_Texture *texture;
605 texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
606 if (!(texture->flags & DPSOFTRAST_TEXTURE_FLAG_MIPMAP) && filter > DPSOFTRAST_TEXTURE_FILTER_LINEAR)
608 dpsoftrast.errorstring = "DPSOFTRAST_Texture_Filter: requested filter mode requires mipmaps";
611 texture->filter = filter;
614 void DPSOFTRAST_SetRenderTargets(int width, int height, unsigned int *depthpixels, unsigned int *colorpixels0, unsigned int *colorpixels1, unsigned int *colorpixels2, unsigned int *colorpixels3)
616 dpsoftrast.fb_width = width;
617 dpsoftrast.fb_height = height;
618 dpsoftrast.fb_depthpixels = depthpixels;
619 dpsoftrast.fb_colorpixels[0] = colorpixels0;
620 dpsoftrast.fb_colorpixels[1] = colorpixels1;
621 dpsoftrast.fb_colorpixels[2] = colorpixels2;
622 dpsoftrast.fb_colorpixels[3] = colorpixels3;
624 void DPSOFTRAST_Viewport(int x, int y, int width, int height)
626 dpsoftrast.user.viewport[0] = x;
627 dpsoftrast.user.viewport[1] = y;
628 dpsoftrast.user.viewport[2] = width;
629 dpsoftrast.user.viewport[3] = height;
630 dpsoftrast.validate |= DPSOFTRAST_VALIDATE_FB;
632 void DPSOFTRAST_ClearColor(float r, float g, float b, float a)
634 int i, x1, y1, x2, y2, w, h, x, y;
637 DPSOFTRAST_Validate(DPSOFTRAST_VALIDATE_FB);
638 x1 = dpsoftrast.fb_clearscissor[0];
639 y1 = dpsoftrast.fb_clearscissor[1];
640 x2 = dpsoftrast.fb_clearscissor[2];
641 y2 = dpsoftrast.fb_clearscissor[1] + dpsoftrast.fb_clearscissor[3];
646 // FIXME: honor dpsoftrast.fb_colormask?
647 c = DPSOFTRAST_BGRA8_FROM_RGBA32F(r,g,b,a);
648 for (i = 0;i < 4;i++)
650 if (!dpsoftrast.fb_colorpixels[i])
652 for (y = y1;y < y2;y++)
654 p = dpsoftrast.fb_colorpixels[i] + y * dpsoftrast.fb_width;
655 for (x = x1;x < x2;x++)
660 void DPSOFTRAST_ClearDepth(float d)
662 int x1, y1, x2, y2, w, h, x, y;
665 DPSOFTRAST_Validate(DPSOFTRAST_VALIDATE_FB);
666 x1 = dpsoftrast.fb_clearscissor[0];
667 y1 = dpsoftrast.fb_clearscissor[1];
668 x2 = dpsoftrast.fb_clearscissor[2];
669 y2 = dpsoftrast.fb_clearscissor[1] + dpsoftrast.fb_clearscissor[3];
674 c = DPSOFTRAST_DEPTH32_FROM_DEPTH32F(d);
675 for (y = y1;y < y2;y++)
677 p = dpsoftrast.fb_depthpixels + y * dpsoftrast.fb_width;
678 for (x = x1;x < x2;x++)
682 void DPSOFTRAST_ColorMask(int r, int g, int b, int a)
684 dpsoftrast.user.colormask[0] = r != 0;
685 dpsoftrast.user.colormask[1] = g != 0;
686 dpsoftrast.user.colormask[2] = b != 0;
687 dpsoftrast.user.colormask[3] = a != 0;
688 dpsoftrast.fb_colormask = ((-dpsoftrast.user.colormask[0]) & 0x00FF0000) | ((-dpsoftrast.user.colormask[1]) & 0x0000FF00) | ((-dpsoftrast.user.colormask[2]) & 0x000000FF) | ((-dpsoftrast.user.colormask[3]) & 0xFF000000);
690 void DPSOFTRAST_DepthTest(int enable)
692 dpsoftrast.user.depthtest = enable;
693 dpsoftrast.validate |= DPSOFTRAST_VALIDATE_DEPTHFUNC;
695 void DPSOFTRAST_ScissorTest(int enable)
697 dpsoftrast.user.scissortest = enable;
698 dpsoftrast.validate |= DPSOFTRAST_VALIDATE_FB;
700 void DPSOFTRAST_Scissor(float x, float y, float width, float height)
702 dpsoftrast.user.scissor[0] = x;
703 dpsoftrast.user.scissor[1] = y;
704 dpsoftrast.user.scissor[2] = width;
705 dpsoftrast.user.scissor[3] = height;
706 dpsoftrast.validate |= DPSOFTRAST_VALIDATE_FB;
709 void DPSOFTRAST_BlendFunc(int smodulate, int dmodulate)
712 dpsoftrast.user.blendfunc[0] = smodulate;
713 dpsoftrast.user.blendfunc[1] = dmodulate;
714 dpsoftrast.validate |= DPSOFTRAST_VALIDATE_BLENDFUNC;
716 void DPSOFTRAST_BlendSubtract(int enable)
718 dpsoftrast.user.blendsubtract = enable != 0;
719 dpsoftrast.validate |= DPSOFTRAST_VALIDATE_BLENDFUNC;
721 void DPSOFTRAST_DepthMask(int enable)
723 dpsoftrast.user.depthmask = enable;
725 void DPSOFTRAST_DepthFunc(int comparemode)
728 dpsoftrast.user.depthfunc = comparemode;
730 void DPSOFTRAST_DepthRange(float range0, float range1)
732 dpsoftrast.user.depthrange[0] = range0;
733 dpsoftrast.user.depthrange[1] = range1;
735 void DPSOFTRAST_PolygonOffset(float alongnormal, float intoview)
737 dpsoftrast.user.polygonoffset[0] = alongnormal;
738 dpsoftrast.user.polygonoffset[1] = intoview;
740 void DPSOFTRAST_CullFace(int mode)
743 dpsoftrast.user.cullface = mode;
745 void DPSOFTRAST_AlphaTest(float enable)
747 dpsoftrast.user.alphatest = enable;
749 void DPSOFTRAST_AlphaFunc(int alphafunc, float alphavalue)
752 dpsoftrast.user.alphafunc = alphafunc;
753 dpsoftrast.user.alphavalue = alphavalue;
755 void DPSOFTRAST_Color4f(float r, float g, float b, float a)
757 dpsoftrast.user.color[0] = r;
758 dpsoftrast.user.color[1] = g;
759 dpsoftrast.user.color[2] = b;
760 dpsoftrast.user.color[3] = a;
762 void DPSOFTRAST_GetPixelsBGRA(int blockx, int blocky, int blockwidth, int blockheight, unsigned char *outpixels)
764 int outstride = blockwidth * 4;
765 int instride = dpsoftrast.fb_width * 4;
768 int bx2 = blockx + blockwidth;
769 int by2 = blocky + blockheight;
774 unsigned char *inpixels;
777 if (bx1 < 0) bx1 = 0;
778 if (by1 < 0) by1 = 0;
779 if (bx2 > dpsoftrast.fb_width) bx2 = dpsoftrast.fb_width;
780 if (by2 > dpsoftrast.fb_height) by2 = dpsoftrast.fb_height;
783 inpixels = (unsigned char *)dpsoftrast.fb_colorpixels[0];
784 if (dpsoftrast.bigendian)
786 for (y = by1;y < by2;y++)
788 b = (unsigned char *)inpixels + (dpsoftrast.fb_height - 1 - y) * instride + 4 * bx1;
789 o = (unsigned char *)outpixels + (y - by1) * outstride;
790 for (x = bx1;x < bx2;x++)
803 for (y = by1;y < by2;y++)
805 b = (unsigned char *)inpixels + (dpsoftrast.fb_height - 1 - y) * instride + 4 * bx1;
806 o = (unsigned char *)outpixels + (y - by1) * outstride;
812 void DPSOFTRAST_CopyRectangleToTexture(int index, int mip, int tx, int ty, int sx, int sy, int width, int height)
816 int tx2 = tx + width;
817 int ty2 = ty + height;
820 int sx2 = sx + width;
821 int sy2 = sy + height;
831 unsigned int *spixels;
832 unsigned int *tpixels;
833 DPSOFTRAST_Texture *texture;
834 texture = DPSOFTRAST_Texture_GetByIndex(index);if (!texture) return;
835 if (mip < 0 || mip >= texture->mipmaps) return;
836 spixels = dpsoftrast.fb_colorpixels[0];
837 swidth = dpsoftrast.fb_width;
838 sheight = dpsoftrast.fb_height;
839 tpixels = (unsigned int *)(texture->bytes + texture->mipmap[mip][0]);
840 twidth = texture->mipmap[mip][2];
841 theight = texture->mipmap[mip][3];
842 if (tx1 < 0) tx1 = 0;
843 if (ty1 < 0) ty1 = 0;
844 if (tx2 > twidth) tx2 = twidth;
845 if (ty2 > theight) ty2 = theight;
846 if (sx1 < 0) sx1 = 0;
847 if (sy1 < 0) sy1 = 0;
848 if (sx2 > swidth) sx2 = swidth;
849 if (sy2 > sheight) sy2 = sheight;
854 if (tw > sw) tw = sw;
855 if (th > sh) th = sh;
856 if (tw < 1 || th < 1)
858 for (y = 0;y < th;y++)
859 memcpy(tpixels + ((ty1 + y) * twidth + tx1), spixels + ((sy1 + y) * swidth + sx1), tw*4);
860 if (texture->mipmaps > 1)
861 DPSOFTRAST_Texture_CalculateMipmaps(index);
863 void DPSOFTRAST_SetTexture(int unitnum, int index)
865 DPSOFTRAST_Texture *texture;
866 if (unitnum < 0 || unitnum >= DPSOFTRAST_MAXTEXTUREUNITS)
868 dpsoftrast.errorstring = "DPSOFTRAST_SetTexture: invalid unit number";
871 texture = DPSOFTRAST_Texture_GetByIndex(index);
872 if (index && !texture)
874 dpsoftrast.errorstring = "DPSOFTRAST_SetTexture: invalid texture handle";
877 dpsoftrast.texbound[unitnum] = texture;
880 void DPSOFTRAST_SetVertexPointer(const float *vertex3f, size_t stride)
882 dpsoftrast.pointer_vertex3f = vertex3f;
883 dpsoftrast.stride_vertex = stride;
885 void DPSOFTRAST_SetColorPointer(const float *color4f, size_t stride)
887 dpsoftrast.pointer_color4f = color4f;
888 dpsoftrast.pointer_color4ub = NULL;
889 dpsoftrast.stride_color = stride;
891 void DPSOFTRAST_SetColorPointer4ub(const unsigned char *color4ub, size_t stride)
893 dpsoftrast.pointer_color4f = NULL;
894 dpsoftrast.pointer_color4ub = color4ub;
895 dpsoftrast.stride_color = stride;
897 void DPSOFTRAST_SetTexCoordPointer(int unitnum, int numcomponents, size_t stride, const float *texcoordf)
899 dpsoftrast.pointer_texcoordf[unitnum] = texcoordf;
900 dpsoftrast.components_texcoord[unitnum] = numcomponents;
901 dpsoftrast.stride_texcoord[unitnum] = stride;
904 void DPSOFTRAST_SetShader(unsigned int mode, unsigned int permutation)
906 dpsoftrast.shader_mode = mode;
907 dpsoftrast.shader_permutation = permutation;
909 void DPSOFTRAST_Uniform4fARB(DPSOFTRAST_UNIFORM index, float v0, float v1, float v2, float v3)
911 dpsoftrast.uniform4f[index*4+0] = v0;
912 dpsoftrast.uniform4f[index*4+1] = v1;
913 dpsoftrast.uniform4f[index*4+2] = v2;
914 dpsoftrast.uniform4f[index*4+3] = v3;
916 void DPSOFTRAST_Uniform4fvARB(DPSOFTRAST_UNIFORM index, const float *v)
918 dpsoftrast.uniform4f[index*4+0] = v[0];
919 dpsoftrast.uniform4f[index*4+1] = v[1];
920 dpsoftrast.uniform4f[index*4+2] = v[2];
921 dpsoftrast.uniform4f[index*4+3] = v[3];
923 void DPSOFTRAST_UniformMatrix4fvARB(DPSOFTRAST_UNIFORM index, int arraysize, int transpose, const float *v)
925 dpsoftrast.uniform4f[index*4+0] = v[0];
926 dpsoftrast.uniform4f[index*4+1] = v[1];
927 dpsoftrast.uniform4f[index*4+2] = v[2];
928 dpsoftrast.uniform4f[index*4+3] = v[3];
929 dpsoftrast.uniform4f[index*4+4] = v[4];
930 dpsoftrast.uniform4f[index*4+5] = v[5];
931 dpsoftrast.uniform4f[index*4+6] = v[6];
932 dpsoftrast.uniform4f[index*4+7] = v[7];
933 dpsoftrast.uniform4f[index*4+8] = v[8];
934 dpsoftrast.uniform4f[index*4+9] = v[9];
935 dpsoftrast.uniform4f[index*4+10] = v[10];
936 dpsoftrast.uniform4f[index*4+11] = v[11];
937 dpsoftrast.uniform4f[index*4+12] = v[12];
938 dpsoftrast.uniform4f[index*4+13] = v[13];
939 dpsoftrast.uniform4f[index*4+14] = v[14];
940 dpsoftrast.uniform4f[index*4+15] = v[15];
942 void DPSOFTRAST_Uniform1iARB(DPSOFTRAST_UNIFORM index, int i0)
944 dpsoftrast.uniform1i[index] = i0;
947 void DPSOFTRAST_Draw_LoadVertices(int firstvertex, int numvertices, bool needcolors)
955 const unsigned char *b;
956 dpsoftrast.draw.numvertices = numvertices;
957 if (dpsoftrast.draw.maxvertices < dpsoftrast.draw.numvertices)
959 if (dpsoftrast.draw.maxvertices < 4096)
960 dpsoftrast.draw.maxvertices = 4096;
961 while (dpsoftrast.draw.maxvertices < dpsoftrast.draw.numvertices)
962 dpsoftrast.draw.maxvertices *= 2;
963 if (dpsoftrast.draw.in_array4f[0])
964 free(dpsoftrast.draw.in_array4f[0]);
965 data = calloc(1, dpsoftrast.draw.maxvertices * sizeof(float[4])*(DPSOFTRAST_ARRAY_TOTAL*2 + 1));
966 for (i = 0;i < DPSOFTRAST_ARRAY_TOTAL;i++, data += dpsoftrast.draw.maxvertices * 4)
967 dpsoftrast.draw.in_array4f[i] = data;
968 for (i = 0;i < DPSOFTRAST_ARRAY_TOTAL;i++, data += dpsoftrast.draw.maxvertices * 4)
969 dpsoftrast.draw.post_array4f[i] = data;
970 dpsoftrast.draw.screencoord4f = data;
971 data += dpsoftrast.draw.maxvertices * 4;
973 stride = dpsoftrast.stride_vertex;
974 v = (const float *)((unsigned char *)dpsoftrast.pointer_vertex3f + firstvertex * stride);
975 p = dpsoftrast.draw.in_array4f[0];
976 for (i = 0;i < numvertices;i++)
983 v = (const float *)((const unsigned char *)v + stride);
987 if (dpsoftrast.pointer_color4f)
989 stride = dpsoftrast.stride_color;
990 v = (const float *)((const unsigned char *)dpsoftrast.pointer_color4f + firstvertex * stride);
991 p = dpsoftrast.draw.in_array4f[1];
992 for (i = 0;i < numvertices;i++)
999 v = (const float *)((const unsigned char *)v + stride);
1002 else if (dpsoftrast.pointer_color4ub)
1004 stride = dpsoftrast.stride_color;
1005 b = (const unsigned char *)((const unsigned char *)dpsoftrast.pointer_color4ub + firstvertex * stride);
1006 p = dpsoftrast.draw.in_array4f[1];
1007 for (i = 0;i < numvertices;i++)
1009 p[0] = b[0] * (1.0f / 255.0f);
1010 p[1] = b[1] * (1.0f / 255.0f);
1011 p[2] = b[2] * (1.0f / 255.0f);
1012 p[3] = b[3] * (1.0f / 255.0f);
1014 b = (const unsigned char *)((const unsigned char *)b + stride);
1019 v = dpsoftrast.user.color;
1020 p = dpsoftrast.draw.in_array4f[1];
1021 for (i = 0;i < numvertices;i++)
1031 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL-2;j++)
1033 if (dpsoftrast.pointer_texcoordf[j])
1035 stride = dpsoftrast.stride_texcoord[j];
1036 v = (const float *)((const unsigned char *)dpsoftrast.pointer_texcoordf[j] + firstvertex * stride);
1037 p = dpsoftrast.draw.in_array4f[j+2];
1038 switch(dpsoftrast.components_texcoord[j])
1041 for (i = 0;i < numvertices;i++)
1048 v = (const float *)((const unsigned char *)v + stride);
1052 for (i = 0;i < numvertices;i++)
1059 v = (const float *)((const unsigned char *)v + stride);
1063 for (i = 0;i < numvertices;i++)
1070 v = (const float *)((const unsigned char *)v + stride);
1078 void DPSOFTRAST_Array_Transform(float *out4f, const float *in4f, int numitems, const float *inmatrix16f)
1083 memcpy(matrix, inmatrix16f, sizeof(float[16]));
1084 for (i = 0;i < numitems;i++, out4f += 4, in4f += 4)
1086 out4f[0] = in4f[0] * matrix[0][0] + in4f[1] * matrix[1][0] + in4f[2] * matrix[2][0] + in4f[3] * matrix[3][0];
1087 out4f[1] = in4f[0] * matrix[0][1] + in4f[1] * matrix[1][1] + in4f[2] * matrix[2][1] + in4f[3] * matrix[3][1];
1088 out4f[2] = in4f[0] * matrix[0][2] + in4f[1] * matrix[1][2] + in4f[2] * matrix[2][2] + in4f[3] * matrix[3][2];
1089 out4f[3] = in4f[0] * matrix[0][3] + in4f[1] * matrix[1][3] + in4f[2] * matrix[2][3] + in4f[3] * matrix[3][3];
1093 void DPSOFTRAST_Array_Copy(float *out4f, const float *in4f, int numitems)
1095 memcpy(out4f, in4f, numitems * sizeof(float[4]));
1098 void DPSOFTRAST_Draw_ProjectVertices(float *out4f, const float *in4f, int numitems)
1100 // NOTE: this is used both as a whole mesh transform function and a
1101 // per-triangle transform function (for clipped triangles), accordingly
1102 // it should not crash on divide by 0 but the result of divide by 0 is
1107 float viewportcenter[4];
1108 float viewportscale[4];
1109 viewportscale[0] = dpsoftrast.fb_viewportscale[0];
1110 viewportscale[1] = dpsoftrast.fb_viewportscale[1];
1111 viewportscale[2] = 0.5f;
1112 viewportscale[3] = 0.0f;
1113 viewportcenter[0] = dpsoftrast.fb_viewportcenter[0];
1114 viewportcenter[1] = dpsoftrast.fb_viewportcenter[1];
1115 viewportcenter[2] = 0.5f;
1116 viewportcenter[3] = 0.0f;
1117 for (i = 0;i < numitems;i++)
1128 out4f[0] = viewportcenter[0] + viewportscale[0] * in4f[0] * w;
1129 out4f[1] = viewportcenter[1] + viewportscale[1] * in4f[1] * w;
1130 out4f[2] = viewportcenter[2] + viewportscale[2] * in4f[2] * w;
1131 out4f[3] = viewportcenter[3] + viewportscale[3] * in4f[3] * w;
1138 void DPSOFTRAST_Draw_DebugEdgePoints(const float *screen0, const float *screen1)
1143 int w = dpsoftrast.fb_width;
1146 unsigned int *pixels = dpsoftrast.fb_colorpixels[0];
1148 bounds[0] = dpsoftrast.fb_viewportscissor[0];
1149 bounds[1] = dpsoftrast.fb_viewportscissor[1];
1150 bounds[2] = dpsoftrast.fb_viewportscissor[0] + dpsoftrast.fb_viewportscissor[2];
1151 bounds[3] = dpsoftrast.fb_viewportscissor[1] + dpsoftrast.fb_viewportscissor[3];
1156 for (i = 0;i <= 128;i++)
1159 //if (dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+3] != 1.0f)
1161 x = (int)(v0[0] + (v1[0] - v0[0]) * (i/128.0f));
1162 y = (int)(v0[1] + (v1[1] - v0[1]) * (i/128.0f));
1163 if (x < bounds[0] || y < bounds[1] || x >= bounds[2] || y >= bounds[3])
1165 //c4f = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_COLOR] + element0*4;
1166 //pixels[y*w+x] = DPSOFTRAST_BGRA8_FROM_RGBA32F(c4f[0], c4f[1], c4f[2], c4f[3]);
1167 pixels[y*w+x] = 0xFFFFFFFF;
1171 void DPSOFTRAST_Draw_Span_Begin(const DPSOFTRAST_State_Draw_Span *span, float *zf)
1174 int startx = span->startx;
1175 int endx = span->endx;
1176 float w = span->data[0][DPSOFTRAST_ARRAY_TOTAL][3];
1177 float wslope = span->data[1][DPSOFTRAST_ARRAY_TOTAL][3];
1178 for (x = startx;x < endx;)
1180 int endsub = x + DPSOFTRAST_MAXSUBSPAN-1;
1181 float z = 1.0f / (w + wslope * x), dz;
1185 dz = endsub > x ? (1.0f / (w + wslope * endsub) - z) / (endsub - x) : 0.0f;
1189 dz = (1.0f / (w + wslope * endsub) - z) * (1.0f / (DPSOFTRAST_MAXSUBSPAN-1));
1191 for (; x <= endsub; x++, z += dz)
1196 void DPSOFTRAST_Draw_Span_Finish(const DPSOFTRAST_State_Draw_Span *span, const float * RESTRICT in4f)
1199 int startx = span->startx;
1200 int endx = span->endx;
1203 unsigned char * RESTRICT pixelmask = span->pixelmask;
1204 unsigned char * RESTRICT pixel = (unsigned char *)dpsoftrast.fb_colorpixels[0];
1207 pixel += span->start * 4;
1208 // handle alphatest now (this affects depth writes too)
1209 if (dpsoftrast.user.alphatest)
1210 for (x = startx;x < endx;x++)
1211 if (in4f[x*4+3] < 0.5f)
1212 pixelmask[x] = false;
1213 // FIXME: this does not handle bigendian
1214 switch(dpsoftrast.fb_blendmode)
1216 case DPSOFTRAST_BLENDMODE_OPAQUE:
1217 for (x = startx;x < endx;x++)
1221 d[0] = (int)(in4f[x*4+2]*255.0f);if (d[0] > 255) d[0] = 255;
1222 d[1] = (int)(in4f[x*4+1]*255.0f);if (d[1] > 255) d[1] = 255;
1223 d[2] = (int)(in4f[x*4+0]*255.0f);if (d[2] > 255) d[2] = 255;
1224 d[3] = (int)(in4f[x*4+3]*255.0f);if (d[3] > 255) d[3] = 255;
1225 pixel[x*4+0] = d[0];
1226 pixel[x*4+1] = d[1];
1227 pixel[x*4+2] = d[2];
1228 pixel[x*4+3] = d[3];
1231 case DPSOFTRAST_BLENDMODE_ALPHA:
1232 for (x = startx;x < endx;x++)
1236 a = in4f[x*4+3] * 255.0f;
1237 b = 1.0f - in4f[x*4+3];
1238 d[0] = (int)(in4f[x*4+2]*a+pixel[x*4+0]*b);if (d[0] > 255) d[0] = 255;
1239 d[1] = (int)(in4f[x*4+1]*a+pixel[x*4+1]*b);if (d[1] > 255) d[1] = 255;
1240 d[2] = (int)(in4f[x*4+0]*a+pixel[x*4+2]*b);if (d[2] > 255) d[2] = 255;
1241 d[3] = (int)(in4f[x*4+3]*a+pixel[x*4+3]*b);if (d[3] > 255) d[3] = 255;
1242 pixel[x*4+0] = d[0];
1243 pixel[x*4+1] = d[1];
1244 pixel[x*4+2] = d[2];
1245 pixel[x*4+3] = d[3];
1248 case DPSOFTRAST_BLENDMODE_ADDALPHA:
1249 for (x = startx;x < endx;x++)
1253 a = in4f[x*4+3] * 255.0f;
1254 d[0] = (int)(in4f[x*4+2]*a+pixel[x*4+0]);if (d[0] > 255) d[0] = 255;
1255 d[1] = (int)(in4f[x*4+1]*a+pixel[x*4+1]);if (d[1] > 255) d[1] = 255;
1256 d[2] = (int)(in4f[x*4+0]*a+pixel[x*4+2]);if (d[2] > 255) d[2] = 255;
1257 d[3] = (int)(in4f[x*4+3]*a+pixel[x*4+3]);if (d[3] > 255) d[3] = 255;
1258 pixel[x*4+0] = d[0];
1259 pixel[x*4+1] = d[1];
1260 pixel[x*4+2] = d[2];
1261 pixel[x*4+3] = d[3];
1264 case DPSOFTRAST_BLENDMODE_ADD:
1265 for (x = startx;x < endx;x++)
1269 d[0] = (int)(in4f[x*4+2]*255.0f+pixel[x*4+0]);if (d[0] > 255) d[0] = 255;
1270 d[1] = (int)(in4f[x*4+1]*255.0f+pixel[x*4+1]);if (d[1] > 255) d[1] = 255;
1271 d[2] = (int)(in4f[x*4+0]*255.0f+pixel[x*4+2]);if (d[2] > 255) d[2] = 255;
1272 d[3] = (int)(in4f[x*4+3]*255.0f+pixel[x*4+3]);if (d[3] > 255) d[3] = 255;
1273 pixel[x*4+0] = d[0];
1274 pixel[x*4+1] = d[1];
1275 pixel[x*4+2] = d[2];
1276 pixel[x*4+3] = d[3];
1279 case DPSOFTRAST_BLENDMODE_INVMOD:
1280 for (x = startx;x < endx;x++)
1284 d[0] = (int)((1.0f-in4f[x*4+2])*pixel[x*4+0]);if (d[0] > 255) d[0] = 255;
1285 d[1] = (int)((1.0f-in4f[x*4+1])*pixel[x*4+1]);if (d[1] > 255) d[1] = 255;
1286 d[2] = (int)((1.0f-in4f[x*4+0])*pixel[x*4+2]);if (d[2] > 255) d[2] = 255;
1287 d[3] = (int)((1.0f-in4f[x*4+3])*pixel[x*4+3]);if (d[3] > 255) d[3] = 255;
1288 pixel[x*4+0] = d[0];
1289 pixel[x*4+1] = d[1];
1290 pixel[x*4+2] = d[2];
1291 pixel[x*4+3] = d[3];
1294 case DPSOFTRAST_BLENDMODE_MUL:
1295 for (x = startx;x < endx;x++)
1299 d[0] = (int)(in4f[x*4+2]*pixel[x*4+0]);if (d[0] > 255) d[0] = 255;
1300 d[1] = (int)(in4f[x*4+1]*pixel[x*4+1]);if (d[1] > 255) d[1] = 255;
1301 d[2] = (int)(in4f[x*4+0]*pixel[x*4+2]);if (d[2] > 255) d[2] = 255;
1302 d[3] = (int)(in4f[x*4+3]*pixel[x*4+3]);if (d[3] > 255) d[3] = 255;
1303 pixel[x*4+0] = d[0];
1304 pixel[x*4+1] = d[1];
1305 pixel[x*4+2] = d[2];
1306 pixel[x*4+3] = d[3];
1309 case DPSOFTRAST_BLENDMODE_MUL2:
1310 for (x = startx;x < endx;x++)
1314 d[0] = (int)(in4f[x*4+2]*pixel[x*4+0]*2.0f);if (d[0] > 255) d[0] = 255;
1315 d[1] = (int)(in4f[x*4+1]*pixel[x*4+1]*2.0f);if (d[1] > 255) d[1] = 255;
1316 d[2] = (int)(in4f[x*4+0]*pixel[x*4+2]*2.0f);if (d[2] > 255) d[2] = 255;
1317 d[3] = (int)(in4f[x*4+3]*pixel[x*4+3]*2.0f);if (d[3] > 255) d[3] = 255;
1318 pixel[x*4+0] = d[0];
1319 pixel[x*4+1] = d[1];
1320 pixel[x*4+2] = d[2];
1321 pixel[x*4+3] = d[3];
1324 case DPSOFTRAST_BLENDMODE_SUBALPHA:
1325 for (x = startx;x < endx;x++)
1329 a = in4f[x*4+3] * -255.0f;
1330 d[0] = (int)(in4f[x*4+2]*a+pixel[x*4+0]);if (d[0] > 255) d[0] = 255;if (d[0] < 0) d[0] = 0;
1331 d[1] = (int)(in4f[x*4+1]*a+pixel[x*4+1]);if (d[1] > 255) d[1] = 255;if (d[1] < 0) d[1] = 0;
1332 d[2] = (int)(in4f[x*4+0]*a+pixel[x*4+2]);if (d[2] > 255) d[2] = 255;if (d[2] < 0) d[2] = 0;
1333 d[3] = (int)(in4f[x*4+3]*a+pixel[x*4+3]);if (d[3] > 255) d[3] = 255;if (d[3] < 0) d[3] = 0;
1334 pixel[x*4+0] = d[0];
1335 pixel[x*4+1] = d[1];
1336 pixel[x*4+2] = d[2];
1337 pixel[x*4+3] = d[3];
1340 case DPSOFTRAST_BLENDMODE_PSEUDOALPHA:
1341 for (x = startx;x < endx;x++)
1346 b = 1.0f - in4f[x*4+3];
1347 d[0] = (int)(in4f[x*4+2]*a+pixel[x*4+0]*b);if (d[0] > 255) d[0] = 255;
1348 d[1] = (int)(in4f[x*4+1]*a+pixel[x*4+1]*b);if (d[1] > 255) d[1] = 255;
1349 d[2] = (int)(in4f[x*4+0]*a+pixel[x*4+2]*b);if (d[2] > 255) d[2] = 255;
1350 d[3] = (int)(in4f[x*4+3]*a+pixel[x*4+3]*b);if (d[3] > 255) d[3] = 255;
1351 pixel[x*4+0] = d[0];
1352 pixel[x*4+1] = d[1];
1353 pixel[x*4+2] = d[2];
1354 pixel[x*4+3] = d[3];
1360 void DPSOFTRAST_Draw_Span_Texture2DVarying(const DPSOFTRAST_State_Draw_Span *span, float * RESTRICT out4f, int texunitindex, int arrayindex, const float * RESTRICT zf)
1363 int startx = span->startx;
1364 int endx = span->endx;
1371 unsigned int tci[2];
1372 unsigned int tci1[2];
1373 unsigned int tcimin[2];
1374 unsigned int tcimax[2];
1379 const unsigned char * RESTRICT pixelbase;
1380 const unsigned char * RESTRICT pixel[4];
1381 DPSOFTRAST_Texture *texture = dpsoftrast.texbound[texunitindex];
1382 // if no texture is bound, just fill it with white
1385 for (x = startx;x < endx;x++)
1387 out4f[x*4+0] = 1.0f;
1388 out4f[x*4+1] = 1.0f;
1389 out4f[x*4+2] = 1.0f;
1390 out4f[x*4+3] = 1.0f;
1394 // if this mipmap of the texture is 1 pixel, just fill it with that color
1396 if (mip >= texture->mipmaps)
1397 mip = texture->mipmaps - 1;
1398 if (texture->mipmap[mip][1] == 4)
1400 c[0] = texture->bytes[2] * (1.0f/255.0f);
1401 c[1] = texture->bytes[1] * (1.0f/255.0f);
1402 c[2] = texture->bytes[0] * (1.0f/255.0f);
1403 c[3] = texture->bytes[3] * (1.0f/255.0f);
1404 for (x = startx;x < endx;x++)
1406 out4f[x*4+0] = c[0];
1407 out4f[x*4+1] = c[1];
1408 out4f[x*4+2] = c[2];
1409 out4f[x*4+3] = c[3];
1413 filter = texture->filter & DPSOFTRAST_TEXTURE_FILTER_LINEAR;
1414 data[0] = span->data[0][arrayindex][0];
1415 data[1] = span->data[0][arrayindex][1];
1416 data[2] = span->data[0][arrayindex][2];
1417 data[3] = span->data[0][arrayindex][3];
1418 slope[0] = span->data[1][arrayindex][0];
1419 slope[1] = span->data[1][arrayindex][1];
1420 slope[2] = span->data[1][arrayindex][2];
1421 slope[3] = span->data[1][arrayindex][3];
1422 flags = texture->flags;
1423 pixelbase = (unsigned char *)texture->bytes + texture->mipmap[mip][0];
1424 tcscale[0] = texture->mipmap[mip][2];
1425 tcscale[1] = texture->mipmap[mip][3];
1426 tciwidth = texture->mipmap[mip][2];
1429 tcimax[0] = texture->mipmap[mip][2]-1;
1430 tcimax[1] = texture->mipmap[mip][3]-1;
1431 tciwrapmask[0] = texture->mipmap[mip][2]-1;
1432 tciwrapmask[1] = texture->mipmap[mip][3]-1;
1433 for (x = startx;x < endx;)
1436 unsigned int subtc[2];
1437 unsigned int substep[2];
1438 int endsub = x + DPSOFTRAST_MAXSUBSPAN-1;
1439 float subscale = 4096.0f/(DPSOFTRAST_MAXSUBSPAN-1);
1443 subscale = endsub > x ? 4096.0f / (endsub - x) : 1.0f;
1445 tc[0] = (data[0] + slope[0]*x) * zf[x] * tcscale[0] - 0.5f;
1446 tc[1] = (data[1] + slope[1]*x) * zf[x] * tcscale[1] - 0.5f;
1447 endtc[0] = (data[0] + slope[0]*endsub) * zf[endsub] * tcscale[0] - 0.5f;
1448 endtc[1] = (data[1] + slope[1]*endsub) * zf[endsub] * tcscale[1] - 0.5f;
1449 substep[0] = (endtc[0] - tc[0]) * subscale;
1450 substep[1] = (endtc[1] - tc[1]) * subscale;
1451 subtc[0] = tc[0] * (1<<12);
1452 subtc[1] = tc[1] * (1<<12);
1453 if (!(flags & DPSOFTRAST_TEXTURE_FLAG_CLAMPTOEDGE))
1455 subtc[0] &= (tciwrapmask[0]<<12)|0xFFF;
1456 subtc[1] &= (tciwrapmask[1]<<12)|0xFFF;
1460 tci[0] = (subtc[0]>>12) - tcimin[0];
1461 tci[1] = (subtc[1]>>12) - tcimin[0];
1462 tci1[0] = ((subtc[0] + (endsub - x)*substep[0])>>12) + 1;
1463 tci1[1] = ((subtc[1] + (endsub - x)*substep[1])>>12) + 1;
1464 if (tci[0] <= tcimax[0] && tci[1] <= tcimax[1] && tci1[0] <= tcimax[0] && tci1[1] <= tcimax[1])
1466 for (; x <= endsub; x++, subtc[0] += substep[0], subtc[1] += substep[1])
1468 unsigned int frac[2] = { subtc[0]&0xFFF, subtc[1]&0xFFF };
1469 unsigned int ifrac[2] = { 0x1000 - frac[0], 0x1000 - frac[1] };
1470 unsigned int lerp[4] = { ifrac[0]*ifrac[1], frac[0]*ifrac[1], ifrac[0]*frac[1], frac[0]*frac[1] };
1471 tci[0] = subtc[0]>>12;
1472 tci[1] = subtc[1]>>12;
1473 pixel[0] = pixelbase + 4 * (tci[1]*tciwidth+tci[0]);
1474 pixel[1] = pixel[0] + 4 * tciwidth;
1475 c[0] = (pixel[0][2]*lerp[0]+pixel[0][4+2]*lerp[1]+pixel[1][2]*lerp[2]+pixel[1][4+2]*lerp[3]) * (1.0f / 0xFF000000);
1476 c[1] = (pixel[0][1]*lerp[0]+pixel[0][4+1]*lerp[1]+pixel[1][1]*lerp[2]+pixel[1][4+1]*lerp[3]) * (1.0f / 0xFF000000);
1477 c[2] = (pixel[0][0]*lerp[0]+pixel[0][4+0]*lerp[1]+pixel[1][0]*lerp[2]+pixel[1][4+0]*lerp[3]) * (1.0f / 0xFF000000);
1478 c[3] = (pixel[0][3]*lerp[0]+pixel[0][4+3]*lerp[1]+pixel[1][3]*lerp[2]+pixel[1][4+3]*lerp[3]) * (1.0f / 0xFF000000);
1479 out4f[x*4+0] = c[0];
1480 out4f[x*4+1] = c[1];
1481 out4f[x*4+2] = c[2];
1482 out4f[x*4+3] = c[3];
1485 else if (flags & DPSOFTRAST_TEXTURE_FLAG_CLAMPTOEDGE)
1487 for (; x <= endsub; x++, subtc[0] += substep[0], subtc[1] += substep[1])
1489 unsigned int frac[2] = { subtc[0]&0xFFF, subtc[1]&0xFFF };
1490 unsigned int ifrac[2] = { 0x1000 - frac[0], 0x1000 - frac[1] };
1491 unsigned int lerp[4] = { ifrac[0]*ifrac[1], frac[0]*ifrac[1], ifrac[0]*frac[1], frac[0]*frac[1] };
1492 tci[0] = subtc[0]>>12;
1493 tci[1] = subtc[1]>>12;
1494 tci1[0] = tci[0] + 1;
1495 tci1[1] = tci[1] + 1;
1496 tci[0] = tci[0] >= tcimin[0] ? (tci[0] <= tcimax[0] ? tci[0] : tcimax[0]) : tcimin[0];
1497 tci[1] = tci[1] >= tcimin[1] ? (tci[1] <= tcimax[1] ? tci[1] : tcimax[1]) : tcimin[1];
1498 tci1[0] = tci1[0] >= tcimin[0] ? (tci1[0] <= tcimax[0] ? tci1[0] : tcimax[0]) : tcimin[0];
1499 tci1[1] = tci1[1] >= tcimin[1] ? (tci1[1] <= tcimax[1] ? tci1[1] : tcimax[1]) : tcimin[1];
1500 pixel[0] = pixelbase + 4 * (tci[1]*tciwidth+tci[0]);
1501 pixel[1] = pixelbase + 4 * (tci[1]*tciwidth+tci1[0]);
1502 pixel[2] = pixelbase + 4 * (tci1[1]*tciwidth+tci[0]);
1503 pixel[3] = pixelbase + 4 * (tci1[1]*tciwidth+tci1[0]);
1504 c[0] = (pixel[0][2]*lerp[0]+pixel[1][2]*lerp[1]+pixel[2][2]*lerp[2]+pixel[3][2]*lerp[3]) * (1.0f / 0xFF000000);
1505 c[1] = (pixel[0][1]*lerp[0]+pixel[1][1]*lerp[1]+pixel[2][1]*lerp[2]+pixel[3][1]*lerp[3]) * (1.0f / 0xFF000000);
1506 c[2] = (pixel[0][0]*lerp[0]+pixel[1][0]*lerp[1]+pixel[2][0]*lerp[2]+pixel[3][0]*lerp[3]) * (1.0f / 0xFF000000);
1507 c[3] = (pixel[0][3]*lerp[0]+pixel[1][3]*lerp[1]+pixel[2][3]*lerp[2]+pixel[3][3]*lerp[3]) * (1.0f / 0xFF000000);
1508 out4f[x*4+0] = c[0];
1509 out4f[x*4+1] = c[1];
1510 out4f[x*4+2] = c[2];
1511 out4f[x*4+3] = c[3];
1516 for (; x <= endsub; x++, subtc[0] += substep[0], subtc[1] += substep[1])
1518 unsigned int frac[2] = { subtc[0]&0xFFF, subtc[1]&0xFFF };
1519 unsigned int ifrac[2] = { 0x1000 - frac[0], 0x1000 - frac[1] };
1520 unsigned int lerp[4] = { ifrac[0]*ifrac[1], frac[0]*ifrac[1], ifrac[0]*frac[1], frac[0]*frac[1] };
1521 tci[0] = subtc[0]>>12;
1522 tci[1] = subtc[1]>>12;
1523 tci1[0] = tci[0] + 1;
1524 tci1[1] = tci[1] + 1;
1525 tci[0] &= tciwrapmask[0];
1526 tci[1] &= tciwrapmask[1];
1527 tci1[0] &= tciwrapmask[0];
1528 tci1[1] &= tciwrapmask[1];
1529 pixel[0] = pixelbase + 4 * (tci[1]*tciwidth+tci[0]);
1530 pixel[1] = pixelbase + 4 * (tci[1]*tciwidth+tci1[0]);
1531 pixel[2] = pixelbase + 4 * (tci1[1]*tciwidth+tci[0]);
1532 pixel[3] = pixelbase + 4 * (tci1[1]*tciwidth+tci1[0]);
1533 c[0] = (pixel[0][2]*lerp[0]+pixel[1][2]*lerp[1]+pixel[2][2]*lerp[2]+pixel[3][2]*lerp[3]) * (1.0f / 0xFF000000);
1534 c[1] = (pixel[0][1]*lerp[0]+pixel[1][1]*lerp[1]+pixel[2][1]*lerp[2]+pixel[3][1]*lerp[3]) * (1.0f / 0xFF000000);
1535 c[2] = (pixel[0][0]*lerp[0]+pixel[1][0]*lerp[1]+pixel[2][0]*lerp[2]+pixel[3][0]*lerp[3]) * (1.0f / 0xFF000000);
1536 c[3] = (pixel[0][3]*lerp[0]+pixel[1][3]*lerp[1]+pixel[2][3]*lerp[2]+pixel[3][3]*lerp[3]) * (1.0f / 0xFF000000);
1537 out4f[x*4+0] = c[0];
1538 out4f[x*4+1] = c[1];
1539 out4f[x*4+2] = c[2];
1540 out4f[x*4+3] = c[3];
1544 else if (flags & DPSOFTRAST_TEXTURE_FLAG_CLAMPTOEDGE)
1546 for (; x <= endsub; x++, subtc[0] += substep[0], subtc[1] += substep[1])
1548 tci[0] = subtc[0]>>12;
1549 tci[1] = subtc[1]>>12;
1550 tci[0] = tci[0] >= tcimin[0] ? (tci[0] <= tcimax[0] ? tci[0] : tcimax[0]) : tcimin[0];
1551 tci[1] = tci[1] >= tcimin[1] ? (tci[1] <= tcimax[1] ? tci[1] : tcimax[1]) : tcimin[1];
1552 pixel[0] = pixelbase + 4 * (tci[1]*tciwidth+tci[0]);
1553 c[0] = pixel[0][2] * (1.0f / 255.0f);
1554 c[1] = pixel[0][1] * (1.0f / 255.0f);
1555 c[2] = pixel[0][0] * (1.0f / 255.0f);
1556 c[3] = pixel[0][3] * (1.0f / 255.0f);
1557 out4f[x*4+0] = c[0];
1558 out4f[x*4+1] = c[1];
1559 out4f[x*4+2] = c[2];
1560 out4f[x*4+3] = c[3];
1565 for (; x <= endsub; x++, subtc[0] += substep[0], subtc[1] += substep[1])
1567 tci[0] = subtc[0]>>12;
1568 tci[1] = subtc[1]>>12;
1569 tci[0] &= tciwrapmask[0];
1570 tci[1] &= tciwrapmask[1];
1571 pixel[0] = pixelbase + 4 * (tci[1]*tciwidth+tci[0]);
1572 c[0] = pixel[0][2] * (1.0f / 255.0f);
1573 c[1] = pixel[0][1] * (1.0f / 255.0f);
1574 c[2] = pixel[0][0] * (1.0f / 255.0f);
1575 c[3] = pixel[0][3] * (1.0f / 255.0f);
1576 out4f[x*4+0] = c[0];
1577 out4f[x*4+1] = c[1];
1578 out4f[x*4+2] = c[2];
1579 out4f[x*4+3] = c[3];
1585 void DPSOFTRAST_Draw_Span_MultiplyVarying(const DPSOFTRAST_State_Draw_Span *span, float *out4f, const float *in4f, int arrayindex, const float *zf)
1588 int startx = span->startx;
1589 int endx = span->endx;
1594 data[0] = span->data[0][arrayindex][0];
1595 data[1] = span->data[0][arrayindex][1];
1596 data[2] = span->data[0][arrayindex][2];
1597 data[3] = span->data[0][arrayindex][3];
1598 slope[0] = span->data[1][arrayindex][0];
1599 slope[1] = span->data[1][arrayindex][1];
1600 slope[2] = span->data[1][arrayindex][2];
1601 slope[3] = span->data[1][arrayindex][3];
1602 for (x = startx;x < endx;x++)
1605 c[0] = (data[0] + slope[0]*x) * z;
1606 c[1] = (data[1] + slope[1]*x) * z;
1607 c[2] = (data[2] + slope[2]*x) * z;
1608 c[3] = (data[3] + slope[3]*x) * z;
1609 out4f[x*4+0] = in4f[x*4+0] * c[0];
1610 out4f[x*4+1] = in4f[x*4+1] * c[1];
1611 out4f[x*4+2] = in4f[x*4+2] * c[2];
1612 out4f[x*4+3] = in4f[x*4+3] * c[3];
1616 void DPSOFTRAST_Draw_Span_AddBloom(const DPSOFTRAST_State_Draw_Span *span, float *out4f, const float *ina4f, const float *inb4f, const float *subcolor)
1618 int x, startx = span->startx, endx = span->endx;
1619 float c[4], localcolor[4];
1620 localcolor[0] = subcolor[0];
1621 localcolor[1] = subcolor[1];
1622 localcolor[2] = subcolor[2];
1623 localcolor[3] = subcolor[3];
1624 for (x = startx;x < endx;x++)
1626 c[0] = inb4f[x*4+0] - localcolor[0];if (c[0] < 0.0f) c[0] = 0.0f;
1627 c[1] = inb4f[x*4+1] - localcolor[1];if (c[1] < 0.0f) c[1] = 0.0f;
1628 c[2] = inb4f[x*4+2] - localcolor[2];if (c[2] < 0.0f) c[2] = 0.0f;
1629 c[3] = inb4f[x*4+3] - localcolor[3];if (c[3] < 0.0f) c[3] = 0.0f;
1630 out4f[x*4+0] = ina4f[x*4+0] + c[0];
1631 out4f[x*4+1] = ina4f[x*4+1] + c[1];
1632 out4f[x*4+2] = ina4f[x*4+2] + c[2];
1633 out4f[x*4+3] = ina4f[x*4+3] + c[3];
1637 void DPSOFTRAST_Draw_Span_MixUniformColor(const DPSOFTRAST_State_Draw_Span *span, float *out4f, const float *in4f, const float *color)
1639 int x, startx = span->startx, endx = span->endx;
1640 float localcolor[4], ilerp, lerp;
1641 localcolor[0] = color[0];
1642 localcolor[1] = color[1];
1643 localcolor[2] = color[2];
1644 localcolor[3] = color[3];
1645 ilerp = 1.0f - localcolor[3];
1646 lerp = localcolor[3];
1647 for (x = startx;x < endx;x++)
1649 out4f[x*4+0] = in4f[x*4+0] * ilerp + localcolor[0] * lerp;
1650 out4f[x*4+1] = in4f[x*4+1] * ilerp + localcolor[1] * lerp;
1651 out4f[x*4+2] = in4f[x*4+2] * ilerp + localcolor[2] * lerp;
1652 out4f[x*4+3] = in4f[x*4+3] * ilerp + localcolor[3] * lerp;
1656 void DPSOFTRAST_Draw_Span_Lightmap(const DPSOFTRAST_State_Draw_Span *span, float * RESTRICT out4f, const float * RESTRICT diffuse, const float * RESTRICT lightmap)
1658 int x, startx = span->startx, endx = span->endx;
1659 float Color_Ambient[4], Color_Diffuse[4];
1660 Color_Ambient[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+0];
1661 Color_Ambient[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+1];
1662 Color_Ambient[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+2];
1663 Color_Ambient[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Alpha*4+0];
1664 Color_Diffuse[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+0];
1665 Color_Diffuse[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+1];
1666 Color_Diffuse[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+2];
1667 Color_Diffuse[3] = 0.0f;
1668 for (x = startx;x < endx;x++)
1670 out4f[x*4+0] = diffuse[x*4+0] * (Color_Ambient[0] + lightmap[x*4+0] * Color_Diffuse[0]);
1671 out4f[x*4+1] = diffuse[x*4+1] * (Color_Ambient[1] + lightmap[x*4+1] * Color_Diffuse[1]);
1672 out4f[x*4+2] = diffuse[x*4+2] * (Color_Ambient[2] + lightmap[x*4+2] * Color_Diffuse[2]);
1673 out4f[x*4+3] = diffuse[x*4+3] * (Color_Ambient[3] + lightmap[x*4+3] * Color_Diffuse[3]);
1677 void DPSOFTRAST_Draw_Span_Lightmap_Finish(const DPSOFTRAST_State_Draw_Span *span, const float * RESTRICT diffuse, const float * RESTRICT lightmap)
1679 int x, startx = span->startx, endx = span->endx;
1681 float Color_Ambient[4], Color_Diffuse[4];
1682 unsigned char * RESTRICT pixelmask = span->pixelmask;
1683 unsigned char * RESTRICT pixel = (unsigned char *)dpsoftrast.fb_colorpixels[0];
1686 pixel += span->start * 4;
1687 Color_Ambient[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+0]*255.0f;
1688 Color_Ambient[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+1]*255.0f;
1689 Color_Ambient[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+2]*255.0f;
1690 Color_Ambient[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Alpha*4+0]*255.0f;
1691 Color_Diffuse[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+0]*255.0f;
1692 Color_Diffuse[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+1]*255.0f;
1693 Color_Diffuse[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+2]*255.0f;
1694 Color_Diffuse[3] = 0.0f;
1695 for (x = startx;x < endx;x++)
1699 d[0] = diffuse[x*4+0] * (Color_Ambient[0] + lightmap[x*4+0] * Color_Diffuse[0]);if (d[0] > 255) d[0] = 255;
1700 d[1] = diffuse[x*4+1] * (Color_Ambient[1] + lightmap[x*4+1] * Color_Diffuse[1]);if (d[1] > 255) d[1] = 255;
1701 d[2] = diffuse[x*4+2] * (Color_Ambient[2] + lightmap[x*4+2] * Color_Diffuse[2]);if (d[2] > 255) d[2] = 255;
1702 d[3] = diffuse[x*4+3] * (Color_Ambient[3] + lightmap[x*4+3] * Color_Diffuse[3]);if (d[3] > 255) d[3] = 255;
1703 pixel[x*4+0] = d[2];
1704 pixel[x*4+1] = d[1];
1705 pixel[x*4+2] = d[0];
1706 pixel[x*4+3] = d[3];
1710 void DPSOFTRAST_Draw_Span_VertexColor(const DPSOFTRAST_State_Draw_Span *span, float *out4f, const float *diffuse, const float *zf)
1712 int x, startx = span->startx, endx = span->endx;
1713 float Color_Ambient[4], Color_Diffuse[4];
1718 int arrayindex = DPSOFTRAST_ARRAY_COLOR;
1719 data[0] = span->data[0][arrayindex][0];
1720 data[1] = span->data[0][arrayindex][1];
1721 data[2] = span->data[0][arrayindex][2];
1722 data[3] = span->data[0][arrayindex][3];
1723 slope[0] = span->data[1][arrayindex][0];
1724 slope[1] = span->data[1][arrayindex][1];
1725 slope[2] = span->data[1][arrayindex][2];
1726 slope[3] = span->data[1][arrayindex][3];
1727 Color_Ambient[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+0];
1728 Color_Ambient[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+1];
1729 Color_Ambient[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+2];
1730 Color_Ambient[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Alpha*4+0];
1731 Color_Diffuse[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+0];
1732 Color_Diffuse[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+1];
1733 Color_Diffuse[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Diffuse*4+2];
1734 Color_Diffuse[3] = 0.0f;
1735 for (x = startx;x < endx;x++)
1738 c[0] = (data[0] + slope[0]*x) * z;
1739 c[1] = (data[1] + slope[1]*x) * z;
1740 c[2] = (data[2] + slope[2]*x) * z;
1741 c[3] = (data[3] + slope[3]*x) * z;
1742 out4f[x*4+0] = diffuse[x*4+0] * (Color_Ambient[0] + c[0] * Color_Diffuse[0]);
1743 out4f[x*4+1] = diffuse[x*4+1] * (Color_Ambient[1] + c[1] * Color_Diffuse[1]);
1744 out4f[x*4+2] = diffuse[x*4+2] * (Color_Ambient[2] + c[2] * Color_Diffuse[2]);
1745 out4f[x*4+3] = diffuse[x*4+3] * (Color_Ambient[3] + c[3] * Color_Diffuse[3]);
1749 void DPSOFTRAST_Draw_Span_FlatColor(const DPSOFTRAST_State_Draw_Span *span, float *out4f, const float *diffuse)
1751 int x, startx = span->startx, endx = span->endx;
1752 float Color_Ambient[4];
1753 Color_Ambient[0] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+0];
1754 Color_Ambient[1] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+1];
1755 Color_Ambient[2] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Color_Ambient*4+2];
1756 Color_Ambient[3] = dpsoftrast.uniform4f[DPSOFTRAST_UNIFORM_Alpha*4+0];
1757 for (x = startx;x < endx;x++)
1759 out4f[x*4+0] = diffuse[x*4+0] * Color_Ambient[0];
1760 out4f[x*4+1] = diffuse[x*4+1] * Color_Ambient[1];
1761 out4f[x*4+2] = diffuse[x*4+2] * Color_Ambient[2];
1762 out4f[x*4+3] = diffuse[x*4+3] * Color_Ambient[3];
1766 void DPSOFTRAST_Draw_VertexShader(void)
1768 DPSOFTRAST_Array_Transform(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_POSITION], dpsoftrast.draw.numvertices, dpsoftrast.uniform4f + 4*DPSOFTRAST_UNIFORM_ModelViewProjectionMatrixM1);
1769 switch(dpsoftrast.shader_mode)
1771 case SHADERMODE_GENERIC: ///< (particles/HUD/etc) vertex color: optionally multiplied by one texture
1772 DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_COLOR], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_COLOR], dpsoftrast.draw.numvertices);
1773 DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices);
1775 case SHADERMODE_POSTPROCESS: ///< postprocessing shader (r_glsl_postprocess)
1776 DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices);
1777 DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD1], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD1], dpsoftrast.draw.numvertices);
1779 case SHADERMODE_DEPTH_OR_SHADOW: ///< (depthfirst/shadows) vertex shader only
1781 case SHADERMODE_FLATCOLOR: ///< (lightmap) modulate texture by uniform color (q1bsp: q3bsp)
1782 DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices);
1784 case SHADERMODE_VERTEXCOLOR: ///< (lightmap) modulate texture by vertex colors (q3bsp)
1785 DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_COLOR], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_COLOR], dpsoftrast.draw.numvertices);
1786 DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices);
1788 case SHADERMODE_LIGHTMAP: ///< (lightmap) modulate texture by lightmap texture (q1bsp: q3bsp)
1789 DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD0], dpsoftrast.draw.numvertices);
1790 DPSOFTRAST_Array_Copy(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_TEXCOORD4], dpsoftrast.draw.in_array4f[DPSOFTRAST_ARRAY_TEXCOORD4], dpsoftrast.draw.numvertices);
1792 case SHADERMODE_FAKELIGHT: ///< (fakelight) modulate texture by "fake" lighting (no lightmaps: no nothing)
1794 case SHADERMODE_LIGHTDIRECTIONMAP_MODELSPACE: ///< (lightmap) use directional pixel shading from texture containing modelspace light directions (q3bsp deluxemap)
1796 case SHADERMODE_LIGHTDIRECTIONMAP_TANGENTSPACE: ///< (lightmap) use directional pixel shading from texture containing tangentspace light directions (q1bsp deluxemap)
1798 case SHADERMODE_LIGHTDIRECTION: ///< (lightmap) use directional pixel shading from fixed light direction (q3bsp)
1800 case SHADERMODE_LIGHTSOURCE: ///< (lightsource) use directional pixel shading from light source (rtlight)
1802 case SHADERMODE_REFRACTION: ///< refract background (the material is rendered normally after this pass)
1804 case SHADERMODE_WATER: ///< refract background and reflection (the material is rendered normally after this pass)
1806 case SHADERMODE_SHOWDEPTH: ///< (debugging) renders depth as color
1808 case SHADERMODE_DEFERREDGEOMETRY: ///< (deferred) render material properties to screenspace geometry buffers
1810 case SHADERMODE_DEFERREDLIGHTSOURCE: ///< (deferred) use directional pixel shading from light source (rtlight) on screenspace geometry buffers
1812 case SHADERMODE_COUNT:
1817 void DPSOFTRAST_Draw_PixelShaderSpan(const DPSOFTRAST_State_Draw_Span *span)
1819 float buffer_z[DPSOFTRAST_DRAW_MAXSPANLENGTH];
1820 float buffer_texture_color[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
1821 float buffer_texture_lightmap[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
1822 float buffer_FragColor[DPSOFTRAST_DRAW_MAXSPANLENGTH*4];
1823 switch(dpsoftrast.shader_mode)
1825 case SHADERMODE_GENERIC: ///< (particles/HUD/etc) vertex color: optionally multiplied by one texture
1826 DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
1827 DPSOFTRAST_Draw_Span_Texture2DVarying(span, buffer_texture_color, GL20TU_FIRST, 2, buffer_z);
1828 DPSOFTRAST_Draw_Span_MultiplyVarying(span, buffer_FragColor, buffer_texture_color, 1, buffer_z);
1829 DPSOFTRAST_Draw_Span_Finish(span, buffer_FragColor);
1831 case SHADERMODE_POSTPROCESS: ///< postprocessing shader (r_glsl_postprocess)
1832 // TODO: optimize!! at the very least there is no reason to use texture sampling on the frame texture
1833 DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
1834 DPSOFTRAST_Draw_Span_Texture2DVarying(span, buffer_FragColor, GL20TU_FIRST, 2, buffer_z);
1835 if (dpsoftrast.shader_permutation & SHADERPERMUTATION_BLOOM)
1837 DPSOFTRAST_Draw_Span_Texture2DVarying(span, buffer_texture_color, GL20TU_SECOND, 3, buffer_z);
1838 DPSOFTRAST_Draw_Span_AddBloom(span, buffer_FragColor, buffer_FragColor, buffer_texture_color, dpsoftrast.uniform4f + DPSOFTRAST_UNIFORM_BloomColorSubtract * 4);
1840 DPSOFTRAST_Draw_Span_MixUniformColor(span, buffer_FragColor, buffer_FragColor, dpsoftrast.uniform4f + DPSOFTRAST_UNIFORM_ViewTintColor * 4);
1841 if (dpsoftrast.shader_permutation & SHADERPERMUTATION_SATURATION)
1843 // TODO: implement saturation
1845 if (dpsoftrast.shader_permutation & SHADERPERMUTATION_GAMMARAMPS)
1847 // TODO: implement gammaramps
1849 DPSOFTRAST_Draw_Span_Finish(span, buffer_FragColor);
1851 case SHADERMODE_DEPTH_OR_SHADOW: ///< (depthfirst/shadows) vertex shader only
1853 case SHADERMODE_FLATCOLOR: ///< (lightmap) modulate texture by uniform color (q1bsp: q3bsp)
1854 DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
1855 DPSOFTRAST_Draw_Span_Texture2DVarying(span, buffer_texture_color, GL20TU_COLOR, 2, buffer_z);
1856 DPSOFTRAST_Draw_Span_FlatColor(span, buffer_FragColor, buffer_texture_color);
1857 DPSOFTRAST_Draw_Span_Finish(span, buffer_FragColor);
1859 case SHADERMODE_VERTEXCOLOR: ///< (lightmap) modulate texture by vertex colors (q3bsp)
1860 DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
1861 DPSOFTRAST_Draw_Span_Texture2DVarying(span, buffer_texture_color, GL20TU_COLOR, 2, buffer_z);
1862 DPSOFTRAST_Draw_Span_VertexColor(span, buffer_FragColor, buffer_texture_color, buffer_z);
1863 DPSOFTRAST_Draw_Span_Finish(span, buffer_FragColor);
1865 case SHADERMODE_LIGHTMAP: ///< (lightmap) modulate texture by lightmap texture (q1bsp: q3bsp)
1866 DPSOFTRAST_Draw_Span_Begin(span, buffer_z);
1867 DPSOFTRAST_Draw_Span_Texture2DVarying(span, buffer_texture_color, GL20TU_COLOR, 2, buffer_z);
1868 DPSOFTRAST_Draw_Span_Texture2DVarying(span, buffer_texture_lightmap, GL20TU_LIGHTMAP, 6, buffer_z);
1869 if(!dpsoftrast.user.alphatest && dpsoftrast.fb_blendmode == DPSOFTRAST_BLENDMODE_OPAQUE)
1871 DPSOFTRAST_Draw_Span_Lightmap_Finish(span, buffer_texture_color, buffer_texture_lightmap);
1875 DPSOFTRAST_Draw_Span_Lightmap(span, buffer_FragColor, buffer_texture_color, buffer_texture_lightmap);
1876 DPSOFTRAST_Draw_Span_Finish(span, buffer_FragColor);
1879 case SHADERMODE_FAKELIGHT: ///< (fakelight) modulate texture by "fake" lighting (no lightmaps: no nothing)
1881 case SHADERMODE_LIGHTDIRECTIONMAP_MODELSPACE: ///< (lightmap) use directional pixel shading from texture containing modelspace light directions (q3bsp deluxemap)
1883 case SHADERMODE_LIGHTDIRECTIONMAP_TANGENTSPACE: ///< (lightmap) use directional pixel shading from texture containing tangentspace light directions (q1bsp deluxemap)
1885 case SHADERMODE_LIGHTDIRECTION: ///< (lightmap) use directional pixel shading from fixed light direction (q3bsp)
1887 case SHADERMODE_LIGHTSOURCE: ///< (lightsource) use directional pixel shading from light source (rtlight)
1889 case SHADERMODE_REFRACTION: ///< refract background (the material is rendered normally after this pass)
1891 case SHADERMODE_WATER: ///< refract background and reflection (the material is rendered normally after this pass)
1893 case SHADERMODE_SHOWDEPTH: ///< (debugging) renders depth as color
1895 case SHADERMODE_DEFERREDGEOMETRY: ///< (deferred) render material properties to screenspace geometry buffers
1897 case SHADERMODE_DEFERREDLIGHTSOURCE: ///< (deferred) use directional pixel shading from light source (rtlight) on screenspace geometry buffers
1899 case SHADERMODE_COUNT:
1904 void DPSOFTRAST_Draw_ProcessSpans(void)
1910 int numspans = dpsoftrast.draw.numspans;
1912 // unsigned int *colorpixel;
1913 unsigned int *depthpixel;
1919 DPSOFTRAST_State_Draw_Span *span = dpsoftrast.draw.spanqueue;
1920 unsigned char pixelmask[DPSOFTRAST_DRAW_MAXSPANLENGTH];
1921 for (i = 0;i < numspans;i++, span++)
1923 w = span->data[0][DPSOFTRAST_ARRAY_TOTAL][3];
1924 wslope = span->data[1][DPSOFTRAST_ARRAY_TOTAL][3];
1925 if (dpsoftrast.user.depthtest && dpsoftrast.fb_depthpixels)
1927 depth = (int)(w*DPSOFTRAST_DEPTHSCALE);
1928 depthslope = (int)(wslope*DPSOFTRAST_DEPTHSCALE);
1929 depthpixel = dpsoftrast.fb_depthpixels + span->start;
1930 switch(dpsoftrast.fb_depthfunc)
1933 case GL_ALWAYS: for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = true; break;
1934 case GL_LESS: for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = depthpixel[x] < d; break;
1935 case GL_LEQUAL: for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = depthpixel[x] <= d; break;
1936 case GL_EQUAL: for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = depthpixel[x] == d; break;
1937 case GL_GEQUAL: for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = depthpixel[x] >= d; break;
1938 case GL_GREATER: for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = depthpixel[x] > d; break;
1939 case GL_NEVER: for (x = 0, d = depth;x < span->length;x++, d += depthslope) pixelmask[x] = false; break;
1941 //colorpixel = dpsoftrast.fb_colorpixels[0] + span->start;
1942 //for (x = 0;x < span->length;x++)
1943 // colorpixel[x] = (depthpixel[x] & 0xFF000000) ? (0x00FF0000) : (depthpixel[x] & 0x00FF0000);
1944 // if there is no color buffer, skip pixel shader
1946 endx = span->length;
1947 while (startx < endx && !pixelmask[startx])
1949 while (endx > startx && !pixelmask[endx-1])
1952 continue; // no pixels to fill
1953 span->pixelmask = pixelmask;
1954 span->startx = startx;
1956 // run pixel shader if appropriate
1957 // do this before running depthmask code, to allow the pixelshader
1958 // to clear pixelmask values for alpha testing
1959 if (dpsoftrast.fb_colorpixels[0] && dpsoftrast.fb_colormask)
1960 DPSOFTRAST_Draw_PixelShaderSpan(span);
1961 if (dpsoftrast.user.depthmask)
1962 for (x = 0, d = depth;x < span->length;x++, d += depthslope)
1968 // no depth testing means we're just dealing with color...
1969 // if there is no color buffer, skip pixel shader
1970 if (dpsoftrast.fb_colorpixels[0] && dpsoftrast.fb_colormask)
1972 memset(pixelmask, 1, span->length);
1973 span->pixelmask = pixelmask;
1975 span->endx = span->length;
1976 DPSOFTRAST_Draw_PixelShaderSpan(span);
1982 void DPSOFTRAST_Draw_ProcessTriangles(int firstvertex, int numvertices, int numtriangles, const int *element3i, const unsigned short *element3s, unsigned char *arraymask)
1984 int cullface = dpsoftrast.user.cullface;
1985 int width = dpsoftrast.fb_width;
1986 int height = dpsoftrast.fb_height;
2019 float trianglearea2;
2020 float triangleedge[2][4];
2021 float trianglenormal[4];
2023 float clipped[DPSOFTRAST_ARRAY_TOTAL][4][4];
2025 float proj[DPSOFTRAST_ARRAY_TOTAL][4][4];
2026 DPSOFTRAST_State_Draw_Span *span;
2027 DPSOFTRAST_State_Draw_Span *oldspan;
2028 for (i = 0;i < numtriangles;i++)
2030 // generate the 3 edges of this triangle
2031 // generate spans for the triangle - switch based on left split or right split classification of triangle
2034 e[0] = element3i[i*3+0] - firstvertex;
2035 e[1] = element3i[i*3+1] - firstvertex;
2036 e[2] = element3i[i*3+2] - firstvertex;
2040 e[0] = element3s[i*3+0] - firstvertex;
2041 e[1] = element3s[i*3+1] - firstvertex;
2042 e[2] = element3s[i*3+2] - firstvertex;
2050 triangleedge[0][0] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[0]*4+0] - dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[1]*4+0];
2051 triangleedge[0][1] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[0]*4+1] - dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[1]*4+1];
2052 triangleedge[0][2] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[0]*4+2] - dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[1]*4+2];
2053 triangleedge[1][0] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[2]*4+0] - dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[1]*4+0];
2054 triangleedge[1][1] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[2]*4+1] - dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[1]*4+1];
2055 triangleedge[1][2] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[2]*4+2] - dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[1]*4+2];
2056 trianglenormal[0] = triangleedge[0][1] * triangleedge[1][2] - triangleedge[0][2] * triangleedge[1][1];
2057 trianglenormal[1] = triangleedge[0][2] * triangleedge[1][0] - triangleedge[0][0] * triangleedge[1][2];
2058 trianglenormal[2] = triangleedge[0][0] * triangleedge[1][1] - triangleedge[0][1] * triangleedge[1][0];
2059 trianglearea2 = trianglenormal[0] * trianglenormal[0] + trianglenormal[1] * trianglenormal[1] + trianglenormal[2] * trianglenormal[2];
2060 // skip degenerate triangles, nothing good can come from them...
2061 if (trianglearea2 == 0.0f)
2063 // apply current cullface mode (this culls many triangles)
2067 if (trianglenormal[2] < 0)
2071 if (trianglenormal[2] > 0)
2075 // calculate distance from nearplane
2076 clipdist[0] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[0]*4+2] + 1.0f;
2077 clipdist[1] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[1]*4+2] + 1.0f;
2078 clipdist[2] = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][e[2]*4+2] + 1.0f;
2080 if (clipdist[0] < 0.0f)
2082 if (clipdist[1] < 0.0f)
2084 if (clipdist[2] < 0.0f)
2086 // clip triangle if necessary
2090 // triangle is entirely in front of nearplane
2092 // macros for clipping vertices
2093 #define CLIPPEDVERTEXLERP(k,p1,p2) \
2094 frac = clipdist[p1] / (clipdist[p1] - clipdist[p2]);\
2095 ifrac = 1.0f - frac;\
2096 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)\
2100 clipped[j][k][0] = dpsoftrast.draw.post_array4f[j][e[p1]*4+0]*ifrac+dpsoftrast.draw.post_array4f[j][e[p2]*4+0]*frac;\
2101 clipped[j][k][1] = dpsoftrast.draw.post_array4f[j][e[p1]*4+1]*ifrac+dpsoftrast.draw.post_array4f[j][e[p2]*4+1]*frac;\
2102 clipped[j][k][2] = dpsoftrast.draw.post_array4f[j][e[p1]*4+2]*ifrac+dpsoftrast.draw.post_array4f[j][e[p2]*4+2]*frac;\
2103 clipped[j][k][3] = dpsoftrast.draw.post_array4f[j][e[p1]*4+3]*ifrac+dpsoftrast.draw.post_array4f[j][e[p2]*4+3]*frac;\
2106 DPSOFTRAST_Draw_ProjectVertices(screen[k], clipped[DPSOFTRAST_ARRAY_POSITION][k], 1)
2107 #define CLIPPEDVERTEXCOPY(k,p1) \
2108 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)\
2112 clipped[j][k][0] = dpsoftrast.draw.post_array4f[j][e[p1]*4+0];\
2113 clipped[j][k][1] = dpsoftrast.draw.post_array4f[j][e[p1]*4+1];\
2114 clipped[j][k][2] = dpsoftrast.draw.post_array4f[j][e[p1]*4+2];\
2115 clipped[j][k][3] = dpsoftrast.draw.post_array4f[j][e[p1]*4+3];\
2118 screen[k][0] = dpsoftrast.draw.screencoord4f[e[p1]*4+0];\
2119 screen[k][1] = dpsoftrast.draw.screencoord4f[e[p1]*4+1];\
2120 screen[k][2] = dpsoftrast.draw.screencoord4f[e[p1]*4+2];\
2121 screen[k][3] = dpsoftrast.draw.screencoord4f[e[p1]*4+3];
2123 CLIPPEDVERTEXCOPY(0,0);
2124 CLIPPEDVERTEXCOPY(1,1);
2125 CLIPPEDVERTEXCOPY(2,2);
2129 CLIPPEDVERTEXLERP(0,0,1);
2130 CLIPPEDVERTEXCOPY(1,1);
2131 CLIPPEDVERTEXCOPY(2,2);
2132 CLIPPEDVERTEXLERP(3,2,0);
2136 CLIPPEDVERTEXCOPY(0,0);
2137 CLIPPEDVERTEXLERP(1,0,1);
2138 CLIPPEDVERTEXLERP(2,1,2);
2139 CLIPPEDVERTEXCOPY(3,2);
2143 CLIPPEDVERTEXLERP(0,1,2);
2144 CLIPPEDVERTEXCOPY(1,2);
2145 CLIPPEDVERTEXLERP(2,2,0);
2149 CLIPPEDVERTEXCOPY(0,0);
2150 CLIPPEDVERTEXCOPY(1,1);
2151 CLIPPEDVERTEXLERP(2,1,2);
2152 CLIPPEDVERTEXLERP(3,2,0);
2156 CLIPPEDVERTEXLERP(0,0,1);
2157 CLIPPEDVERTEXCOPY(1,1);
2158 CLIPPEDVERTEXLERP(2,1,2);
2162 CLIPPEDVERTEXCOPY(0,0);
2163 CLIPPEDVERTEXLERP(1,0,1);
2164 CLIPPEDVERTEXLERP(2,2,0);
2168 // triangle is entirely behind nearplane
2171 // calculate integer y coords for triangle points
2172 screenx[0] = (int)(screen[0][0]);
2173 screeny[0] = (int)(screen[0][1]);
2174 screenx[1] = (int)(screen[1][0]);
2175 screeny[1] = (int)(screen[1][1]);
2176 screenx[2] = (int)(screen[2][0]);
2177 screeny[2] = (int)(screen[2][1]);
2178 screenx[3] = (int)(screen[3][0]);
2179 screeny[3] = (int)(screen[3][1]);
2180 // figure out the extents (bounding box) of the triangle
2181 extent[0] = screenx[0];
2182 extent[1] = screeny[0];
2183 extent[2] = screenx[0];
2184 extent[3] = screeny[0];
2185 for (j = 1;j < numpoints;j++)
2187 if (extent[0] > screenx[j]) extent[0] = screenx[j];
2188 if (extent[1] > screeny[j]) extent[1] = screeny[j];
2189 if (extent[2] < screenx[j]) extent[2] = screenx[j];
2190 if (extent[3] < screeny[j]) extent[3] = screeny[j];
2200 if (extent[2] > width)
2202 if (extent[3] > height)
2204 // skip offscreen triangles
2205 if (extent[2] <= extent[0] || extent[3] <= extent[1])
2207 // TODO: adjust texture LOD by texture density
2209 // okay, this triangle is going to produce spans, we'd better project
2210 // the interpolants now (this is what gives perspective texturing),
2211 // this consists of simply multiplying all arrays by the W coord
2212 // (which is basically 1/Z), which will be undone per-pixel
2213 // (multiplying by Z again) to get the perspective-correct array
2215 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)
2219 for (k = 0;k < numpoints;k++)
2222 proj[j][k][0] = clipped[j][k][0] * w;
2223 proj[j][k][1] = clipped[j][k][1] * w;
2224 proj[j][k][2] = clipped[j][k][2] * w;
2225 proj[j][k][3] = clipped[j][k][3] * w;
2229 // iterate potential spans
2230 // TODO: optimize? if we figured out the edge order beforehand, this
2231 // could do loops over the edges in the proper order rather than
2232 // selecting them for each span
2233 // TODO: optimize? the edges could have data slopes calculated
2234 // TODO: optimize? the data slopes could be calculated as a plane
2235 // (2D slopes) to avoid any interpolation along edges at all
2236 for (y = extent[1];y < extent[3];y++)
2238 // get center of pixel y
2240 // do the compares all at once
2241 screenyless[0] = y <= screeny[0];
2242 screenyless[1] = y <= screeny[1];
2243 screenyless[2] = y <= screeny[2];
2244 screenyless[3] = y <= screeny[3];
2247 switch(screenyless[0] + screenyless[1] * 2 + screenyless[2] * 4 + screenyless[3] * 8)
2249 case 0: /*0000*/ continue;
2250 case 1: /*1000*/ edge0p = 3;edge0n = 0;edge1p = 0;edge1n = 1;break;
2251 case 2: /*0100*/ edge0p = 0;edge0n = 1;edge1p = 1;edge1n = 2;break;
2252 case 3: /*1100*/ edge0p = 3;edge0n = 0;edge1p = 1;edge1n = 2;break;
2253 case 4: /*0010*/ edge0p = 1;edge0n = 2;edge1p = 2;edge1n = 3;break;
2254 case 5: /*1010*/ edge0p = 1;edge0n = 2;edge1p = 2;edge1n = 3;break; // concave - nonsense
2255 case 6: /*0110*/ edge0p = 0;edge0n = 1;edge1p = 2;edge1n = 3;break;
2256 case 7: /*1110*/ edge0p = 3;edge0n = 0;edge1p = 2;edge1n = 3;break;
2257 case 8: /*0001*/ edge0p = 2;edge0n = 3;edge1p = 3;edge1n = 0;break;
2258 case 9: /*1001*/ edge0p = 2;edge0n = 3;edge1p = 0;edge1n = 1;break;
2259 case 10: /*0101*/ edge0p = 2;edge0n = 3;edge1p = 1;edge1n = 2;break; // concave - nonsense
2260 case 11: /*1101*/ edge0p = 2;edge0n = 3;edge1p = 1;edge1n = 2;break;
2261 case 12: /*0011*/ edge0p = 1;edge0n = 2;edge1p = 3;edge1n = 0;break;
2262 case 13: /*1011*/ edge0p = 1;edge0n = 2;edge1p = 0;edge1n = 1;break;
2263 case 14: /*0111*/ edge0p = 0;edge0n = 1;edge1p = 3;edge1n = 0;break;
2264 case 15: /*1111*/ continue;
2269 switch(screenyless[0] + screenyless[1] * 2 + screenyless[2] * 4)
2271 case 0: /*000*/ continue;
2272 case 1: /*100*/ edge0p = 2;edge0n = 0;edge1p = 0;edge1n = 1;break;
2273 case 2: /*010*/ edge0p = 0;edge0n = 1;edge1p = 1;edge1n = 2;break;
2274 case 3: /*110*/ edge0p = 2;edge0n = 0;edge1p = 1;edge1n = 2;break;
2275 case 4: /*001*/ edge0p = 1;edge0n = 2;edge1p = 2;edge1n = 0;break;
2276 case 5: /*101*/ edge0p = 1;edge0n = 2;edge1p = 0;edge1n = 1;break;
2277 case 6: /*011*/ edge0p = 0;edge0n = 1;edge1p = 2;edge1n = 0;break;
2278 case 7: /*111*/ continue;
2288 for (j = 0, k = numpoints-1;j < numpoints;k = j, j++)
2290 if (screenyless[k] && !screenyless[j])
2296 else if (screenyless[j] && !screenyless[k])
2303 if (foundedges != 3)
2305 if (cedge0p != edge0p || cedge0n != edge0n || cedge1p != edge1p || cedge1n != edge1n)
2308 printf("case %i%i%i%i is broken %i %i %i %i != %i %i %i %i\n", screenyless[0], screenyless[1], screenyless[2], screenyless[3], cedge0p, cedge0n, cedge1p, cedge1n, edge0p, edge0n, edge1p, edge1n);
2310 printf("case %i%i%i is broken %i %i %i %i != %i %i %i %i\n", screenyless[0], screenyless[1], screenyless[2], cedge0p, cedge0n, cedge1p, cedge1n, edge0p, edge0n, edge1p, edge1n);
2314 edge0ylerp = (yc - screen[edge0p][1]) / (screen[edge0n][1] - screen[edge0p][1]);
2315 edge1ylerp = (yc - screen[edge1p][1]) / (screen[edge1n][1] - screen[edge1p][1]);
2316 if (edge0ylerp < 0 || edge0ylerp > 1 || edge1ylerp < 0 || edge1ylerp > 1)
2318 edge0yilerp = 1.0f - edge0ylerp;
2319 edge1yilerp = 1.0f - edge1ylerp;
2320 edge0xf = screen[edge0p][0] * edge0yilerp + screen[edge0n][0] * edge0ylerp;
2321 edge1xf = screen[edge1p][0] * edge1yilerp + screen[edge1n][0] * edge1ylerp;
2322 if (edge0xf < edge1xf)
2332 startx = (int)ceil(startxf);
2333 endx = (int)ceil(endxf);
2340 if (startxf > startx || endxf < endx-1) { printf("%s:%i X wrong (%i to %i is outside %f to %f)\n", __FILE__, __LINE__, startx, endx, startxf, endxf); }
2341 spanilength = 1.0f / (endxf - startxf);
2342 startxlerp = startx - startxf;
2343 span = &dpsoftrast.draw.spanqueue[dpsoftrast.draw.numspans++];
2345 span->start = y * width + startx;
2346 span->length = endx - startx;
2347 j = DPSOFTRAST_ARRAY_TOTAL;
2348 if (edge0xf < edge1xf)
2350 span->data[0][j][0] = screen[edge0p][0] * edge0yilerp + screen[edge0n][0] * edge0ylerp;
2351 span->data[0][j][1] = screen[edge0p][1] * edge0yilerp + screen[edge0n][1] * edge0ylerp;
2352 span->data[0][j][2] = screen[edge0p][2] * edge0yilerp + screen[edge0n][2] * edge0ylerp;
2353 span->data[0][j][3] = screen[edge0p][3] * edge0yilerp + screen[edge0n][3] * edge0ylerp;
2354 span->data[1][j][0] = screen[edge1p][0] * edge1yilerp + screen[edge1n][0] * edge1ylerp;
2355 span->data[1][j][1] = screen[edge1p][1] * edge1yilerp + screen[edge1n][1] * edge1ylerp;
2356 span->data[1][j][2] = screen[edge1p][2] * edge1yilerp + screen[edge1n][2] * edge1ylerp;
2357 span->data[1][j][3] = screen[edge1p][3] * edge1yilerp + screen[edge1n][3] * edge1ylerp;
2358 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)
2362 span->data[0][j][0] = proj[j][edge0p][0] * edge0yilerp + proj[j][edge0n][0] * edge0ylerp;
2363 span->data[0][j][1] = proj[j][edge0p][1] * edge0yilerp + proj[j][edge0n][1] * edge0ylerp;
2364 span->data[0][j][2] = proj[j][edge0p][2] * edge0yilerp + proj[j][edge0n][2] * edge0ylerp;
2365 span->data[0][j][3] = proj[j][edge0p][3] * edge0yilerp + proj[j][edge0n][3] * edge0ylerp;
2366 span->data[1][j][0] = proj[j][edge1p][0] * edge1yilerp + proj[j][edge1n][0] * edge1ylerp;
2367 span->data[1][j][1] = proj[j][edge1p][1] * edge1yilerp + proj[j][edge1n][1] * edge1ylerp;
2368 span->data[1][j][2] = proj[j][edge1p][2] * edge1yilerp + proj[j][edge1n][2] * edge1ylerp;
2369 span->data[1][j][3] = proj[j][edge1p][3] * edge1yilerp + proj[j][edge1n][3] * edge1ylerp;
2375 span->data[0][j][0] = screen[edge1p][0] * edge1yilerp + screen[edge1n][0] * edge1ylerp;
2376 span->data[0][j][1] = screen[edge1p][1] * edge1yilerp + screen[edge1n][1] * edge1ylerp;
2377 span->data[0][j][2] = screen[edge1p][2] * edge1yilerp + screen[edge1n][2] * edge1ylerp;
2378 span->data[0][j][3] = screen[edge1p][3] * edge1yilerp + screen[edge1n][3] * edge1ylerp;
2379 span->data[1][j][0] = screen[edge0p][0] * edge0yilerp + screen[edge0n][0] * edge0ylerp;
2380 span->data[1][j][1] = screen[edge0p][1] * edge0yilerp + screen[edge0n][1] * edge0ylerp;
2381 span->data[1][j][2] = screen[edge0p][2] * edge0yilerp + screen[edge0n][2] * edge0ylerp;
2382 span->data[1][j][3] = screen[edge0p][3] * edge0yilerp + screen[edge0n][3] * edge0ylerp;
2383 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)
2387 span->data[0][j][0] = proj[j][edge1p][0] * edge1yilerp + proj[j][edge1n][0] * edge1ylerp;
2388 span->data[0][j][1] = proj[j][edge1p][1] * edge1yilerp + proj[j][edge1n][1] * edge1ylerp;
2389 span->data[0][j][2] = proj[j][edge1p][2] * edge1yilerp + proj[j][edge1n][2] * edge1ylerp;
2390 span->data[0][j][3] = proj[j][edge1p][3] * edge1yilerp + proj[j][edge1n][3] * edge1ylerp;
2391 span->data[1][j][0] = proj[j][edge0p][0] * edge0yilerp + proj[j][edge0n][0] * edge0ylerp;
2392 span->data[1][j][1] = proj[j][edge0p][1] * edge0yilerp + proj[j][edge0n][1] * edge0ylerp;
2393 span->data[1][j][2] = proj[j][edge0p][2] * edge0yilerp + proj[j][edge0n][2] * edge0ylerp;
2394 span->data[1][j][3] = proj[j][edge0p][3] * edge0yilerp + proj[j][edge0n][3] * edge0ylerp;
2398 // change data[1][n][] to be a data slope
2399 j = DPSOFTRAST_ARRAY_TOTAL;
2400 span->data[1][j][0] = (span->data[1][j][0] - span->data[0][j][0]) * spanilength;
2401 span->data[1][j][1] = (span->data[1][j][1] - span->data[0][j][1]) * spanilength;
2402 span->data[1][j][2] = (span->data[1][j][2] - span->data[0][j][2]) * spanilength;
2403 span->data[1][j][3] = (span->data[1][j][3] - span->data[0][j][3]) * spanilength;
2404 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)
2408 span->data[1][j][0] = (span->data[1][j][0] - span->data[0][j][0]) * spanilength;
2409 span->data[1][j][1] = (span->data[1][j][1] - span->data[0][j][1]) * spanilength;
2410 span->data[1][j][2] = (span->data[1][j][2] - span->data[0][j][2]) * spanilength;
2411 span->data[1][j][3] = (span->data[1][j][3] - span->data[0][j][3]) * spanilength;
2414 // adjust the data[0][n][] to be correct for the pixel centers
2415 // this also handles horizontal clipping where a major part of the
2416 // span may be off the left side of the screen
2417 j = DPSOFTRAST_ARRAY_TOTAL;
2418 span->data[0][j][0] += span->data[1][j][0] * startxlerp;
2419 span->data[0][j][1] += span->data[1][j][1] * startxlerp;
2420 span->data[0][j][2] += span->data[1][j][2] * startxlerp;
2421 span->data[0][j][3] += span->data[1][j][3] * startxlerp;
2422 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)
2426 span->data[0][j][0] += span->data[1][j][0] * startxlerp;
2427 span->data[0][j][1] += span->data[1][j][1] * startxlerp;
2428 span->data[0][j][2] += span->data[1][j][2] * startxlerp;
2429 span->data[0][j][3] += span->data[1][j][3] * startxlerp;
2432 // to keep the shader routines from needing more than a small
2433 // buffer for pixel intermediate data, we split long spans...
2434 while (span->length > DPSOFTRAST_DRAW_MAXSPANLENGTH)
2436 span->length = DPSOFTRAST_DRAW_MAXSPANLENGTH;
2437 if (dpsoftrast.draw.numspans >= DPSOFTRAST_DRAW_MAXSPANQUEUE)
2439 DPSOFTRAST_Draw_ProcessSpans();
2440 dpsoftrast.draw.numspans = 0;
2443 span = &dpsoftrast.draw.spanqueue[dpsoftrast.draw.numspans++];
2445 startx += DPSOFTRAST_DRAW_MAXSPANLENGTH;
2446 span->start = y * width + startx;
2447 span->length = endx - startx;
2448 j = DPSOFTRAST_ARRAY_TOTAL;
2449 span->data[0][j][0] += span->data[1][j][0] * DPSOFTRAST_DRAW_MAXSPANLENGTH;
2450 span->data[0][j][1] += span->data[1][j][1] * DPSOFTRAST_DRAW_MAXSPANLENGTH;
2451 span->data[0][j][2] += span->data[1][j][2] * DPSOFTRAST_DRAW_MAXSPANLENGTH;
2452 span->data[0][j][3] += span->data[1][j][3] * DPSOFTRAST_DRAW_MAXSPANLENGTH;
2453 for (j = 0;j < DPSOFTRAST_ARRAY_TOTAL;j++)
2457 span->data[0][j][0] += span->data[1][j][0] * DPSOFTRAST_DRAW_MAXSPANLENGTH;
2458 span->data[0][j][1] += span->data[1][j][1] * DPSOFTRAST_DRAW_MAXSPANLENGTH;
2459 span->data[0][j][2] += span->data[1][j][2] * DPSOFTRAST_DRAW_MAXSPANLENGTH;
2460 span->data[0][j][3] += span->data[1][j][3] * DPSOFTRAST_DRAW_MAXSPANLENGTH;
2464 // after all that, we have a span suitable for the pixel shader...
2465 if (dpsoftrast.draw.numspans >= DPSOFTRAST_DRAW_MAXSPANQUEUE)
2467 DPSOFTRAST_Draw_ProcessSpans();
2468 dpsoftrast.draw.numspans = 0;
2471 // draw outlines over triangle for debugging
2472 // for (j = 0, k = numpoints-1;j < numpoints;k = j, j++)
2473 // DPSOFTRAST_Draw_DebugEdgePoints(screen[k], screen[j]);
2475 if (dpsoftrast.draw.numspans)
2477 DPSOFTRAST_Draw_ProcessSpans();
2478 dpsoftrast.draw.numspans = 0;
2482 void DPSOFTRAST_Draw_DebugPoints(void)
2487 int numvertices = dpsoftrast.draw.numvertices;
2488 int w = dpsoftrast.fb_width;
2490 unsigned int *pixels = dpsoftrast.fb_colorpixels[0];
2492 bounds[0] = dpsoftrast.fb_viewportscissor[0];
2493 bounds[1] = dpsoftrast.fb_viewportscissor[1];
2494 bounds[2] = dpsoftrast.fb_viewportscissor[0] + dpsoftrast.fb_viewportscissor[2];
2495 bounds[3] = dpsoftrast.fb_viewportscissor[1] + dpsoftrast.fb_viewportscissor[3];
2496 for (i = 0;i < numvertices;i++)
2499 //if (dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+3] != 1.0f)
2501 x = (int)(dpsoftrast.draw.screencoord4f[i*4+0]);
2502 y = (int)(dpsoftrast.draw.screencoord4f[i*4+1]);
2503 //x = (int)(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+0] + 0.5f);
2504 //y = (int)(dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+1] + 0.5f);
2505 //x = (int)((dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+0] + 1.0f) * dpsoftrast.fb_width * 0.5f + 0.5f);
2506 //y = (int)((dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION][i*4+1] + 1.0f) * dpsoftrast.fb_height * 0.5f + 0.5f);
2507 if (x < bounds[0] || y < bounds[1] || x >= bounds[2] || y >= bounds[3])
2509 c4f = dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_COLOR] + i*4;
2510 pixels[y*w+x] = DPSOFTRAST_BGRA8_FROM_RGBA32F(c4f[0], c4f[1], c4f[2], c4f[3]);
2514 void DPSOFTRAST_DrawTriangles(int firstvertex, int numvertices, int numtriangles, const int *element3i, const unsigned short *element3s)
2516 unsigned char arraymask[DPSOFTRAST_ARRAY_TOTAL];
2517 arraymask[0] = true;
2518 arraymask[1] = dpsoftrast.fb_colorpixels[0] != NULL; // TODO: optimize (decide based on shadermode)
2519 arraymask[2] = dpsoftrast.pointer_texcoordf[0] != NULL;
2520 arraymask[3] = dpsoftrast.pointer_texcoordf[1] != NULL;
2521 arraymask[4] = dpsoftrast.pointer_texcoordf[2] != NULL;
2522 arraymask[5] = dpsoftrast.pointer_texcoordf[3] != NULL;
2523 arraymask[6] = dpsoftrast.pointer_texcoordf[4] != NULL;
2524 arraymask[7] = dpsoftrast.pointer_texcoordf[5] != NULL;
2525 arraymask[8] = dpsoftrast.pointer_texcoordf[6] != NULL;
2526 arraymask[9] = dpsoftrast.pointer_texcoordf[7] != NULL;
2527 DPSOFTRAST_Validate(DPSOFTRAST_VALIDATE_DRAW);
2528 DPSOFTRAST_Draw_LoadVertices(firstvertex, numvertices, true);
2529 DPSOFTRAST_Draw_VertexShader();
2530 DPSOFTRAST_Draw_ProjectVertices(dpsoftrast.draw.screencoord4f, dpsoftrast.draw.post_array4f[DPSOFTRAST_ARRAY_POSITION], numvertices);
2531 DPSOFTRAST_Draw_ProcessTriangles(firstvertex, numvertices, numtriangles, element3i, element3s, arraymask);
2534 void DPSOFTRAST_Init(int width, int height, unsigned int *colorpixels, unsigned int *depthpixels)
2543 memset(&dpsoftrast, 0, sizeof(dpsoftrast));
2544 dpsoftrast.bigendian = u.b[3];
2545 dpsoftrast.fb_width = width;
2546 dpsoftrast.fb_height = height;
2547 dpsoftrast.fb_depthpixels = depthpixels;
2548 dpsoftrast.fb_colorpixels[0] = colorpixels;
2549 dpsoftrast.fb_colorpixels[1] = NULL;
2550 dpsoftrast.fb_colorpixels[1] = NULL;
2551 dpsoftrast.fb_colorpixels[1] = NULL;
2552 dpsoftrast.texture_firstfree = 1;
2553 dpsoftrast.texture_end = 1;
2554 dpsoftrast.texture_max = 0;
2555 dpsoftrast.user.colormask[0] = 1;
2556 dpsoftrast.user.colormask[1] = 1;
2557 dpsoftrast.user.colormask[2] = 1;
2558 dpsoftrast.user.colormask[3] = 1;
2559 dpsoftrast.user.blendfunc[0] = GL_ONE;
2560 dpsoftrast.user.blendfunc[1] = GL_ZERO;
2561 dpsoftrast.user.depthmask = true;
2562 dpsoftrast.user.depthtest = true;
2563 dpsoftrast.user.depthfunc = GL_LEQUAL;
2564 dpsoftrast.user.scissortest = false;
2565 dpsoftrast.user.cullface = GL_BACK;
2566 dpsoftrast.user.alphatest = false;
2567 dpsoftrast.user.alphafunc = GL_GREATER;
2568 dpsoftrast.user.alphavalue = 0.5f;
2569 dpsoftrast.user.scissor[0] = 0;
2570 dpsoftrast.user.scissor[1] = 0;
2571 dpsoftrast.user.scissor[2] = dpsoftrast.fb_width;
2572 dpsoftrast.user.scissor[3] = dpsoftrast.fb_height;
2573 dpsoftrast.user.viewport[0] = 0;
2574 dpsoftrast.user.viewport[1] = 0;
2575 dpsoftrast.user.viewport[2] = dpsoftrast.fb_width;
2576 dpsoftrast.user.viewport[3] = dpsoftrast.fb_height;
2577 dpsoftrast.user.depthrange[0] = 0;
2578 dpsoftrast.user.depthrange[1] = 1;
2579 dpsoftrast.user.polygonoffset[0] = 0;
2580 dpsoftrast.user.polygonoffset[1] = 0;
2581 dpsoftrast.user.color[0] = 1;
2582 dpsoftrast.user.color[1] = 1;
2583 dpsoftrast.user.color[2] = 1;
2584 dpsoftrast.user.color[3] = 1;
2585 dpsoftrast.validate = -1;
2586 DPSOFTRAST_Validate(-1);
2587 dpsoftrast.validate = 0;
2590 void DPSOFTRAST_Shutdown(void)
2593 for (i = 0;i < dpsoftrast.texture_end;i++)
2594 if (dpsoftrast.texture[i].bytes)
2595 free(dpsoftrast.texture[i].bytes);
2596 if (dpsoftrast.texture)
2597 free(dpsoftrast.texture);
2598 memset(&dpsoftrast, 0, sizeof(dpsoftrast));