3 #include "cl_collision.h"
5 cvar_t gl_mesh_drawrangeelements = {0, "gl_mesh_drawrangeelements", "1", "use glDrawRangeElements function if available instead of glDrawElements (for performance comparisons or bug testing)"};
6 cvar_t gl_mesh_testarrayelement = {0, "gl_mesh_testarrayelement", "0", "use glBegin(GL_TRIANGLES);glArrayElement();glEnd(); primitives instead of glDrawElements (useful to test for driver bugs with glDrawElements)"};
7 cvar_t gl_mesh_testmanualfeeding = {0, "gl_mesh_testmanualfeeding", "0", "use glBegin(GL_TRIANGLES);glTexCoord2f();glVertex3f();glEnd(); primitives instead of glDrawElements (useful to test for driver bugs with glDrawElements)"};
8 cvar_t gl_paranoid = {0, "gl_paranoid", "0", "enables OpenGL error checking and other tests"};
9 cvar_t gl_printcheckerror = {0, "gl_printcheckerror", "0", "prints all OpenGL error checks, useful to identify location of driver crashes"};
11 cvar_t r_render = {0, "r_render", "1", "enables rendering calls (you want this on!)"};
12 cvar_t r_waterwarp = {CVAR_SAVE, "r_waterwarp", "1", "warp view while underwater"};
13 cvar_t gl_polyblend = {CVAR_SAVE, "gl_polyblend", "1", "tints view while underwater, hurt, etc"};
14 cvar_t gl_dither = {CVAR_SAVE, "gl_dither", "1", "enables OpenGL dithering (16bit looks bad with this off)"};
15 cvar_t gl_lockarrays = {0, "gl_lockarrays", "0", "enables use of glLockArraysEXT, may cause glitches with some broken drivers, and may be slower than normal"};
16 cvar_t gl_lockarrays_minimumvertices = {0, "gl_lockarrays_minimumvertices", "1", "minimum number of vertices required for use of glLockArraysEXT, setting this too low may reduce performance"};
17 cvar_t gl_vbo = {0, "gl_vbo", "1", "make use of GL_ARB_vertex_buffer_object extension to store static geometry in video memory for faster rendering"};
19 cvar_t v_flipped = {0, "v_flipped", "0", "mirror the screen (poor man's left handed mode)"};
20 qboolean v_flipped_state = false;
22 int gl_maxdrawrangeelementsvertices;
23 int gl_maxdrawrangeelementsindices;
28 void GL_PrintError(int errornumber, char *filename, int linenumber)
32 #ifdef GL_INVALID_ENUM
34 Con_Printf("GL_INVALID_ENUM at %s:%i\n", filename, linenumber);
37 #ifdef GL_INVALID_VALUE
38 case GL_INVALID_VALUE:
39 Con_Printf("GL_INVALID_VALUE at %s:%i\n", filename, linenumber);
42 #ifdef GL_INVALID_OPERATION
43 case GL_INVALID_OPERATION:
44 Con_Printf("GL_INVALID_OPERATION at %s:%i\n", filename, linenumber);
47 #ifdef GL_STACK_OVERFLOW
48 case GL_STACK_OVERFLOW:
49 Con_Printf("GL_STACK_OVERFLOW at %s:%i\n", filename, linenumber);
52 #ifdef GL_STACK_UNDERFLOW
53 case GL_STACK_UNDERFLOW:
54 Con_Printf("GL_STACK_UNDERFLOW at %s:%i\n", filename, linenumber);
57 #ifdef GL_OUT_OF_MEMORY
58 case GL_OUT_OF_MEMORY:
59 Con_Printf("GL_OUT_OF_MEMORY at %s:%i\n", filename, linenumber);
62 #ifdef GL_TABLE_TOO_LARGE
63 case GL_TABLE_TOO_LARGE:
64 Con_Printf("GL_TABLE_TOO_LARGE at %s:%i\n", filename, linenumber);
68 Con_Printf("GL UNKNOWN (%i) at %s:%i\n", errornumber, filename, linenumber);
74 #define BACKENDACTIVECHECK if (!backendactive) Sys_Error("GL backend function called when backend is not active");
76 void SCR_ScreenShot_f (void);
78 static matrix4x4_t backend_viewmatrix;
79 static matrix4x4_t backend_modelmatrix;
80 static matrix4x4_t backend_modelviewmatrix;
81 static matrix4x4_t backend_projectmatrix;
83 static unsigned int backendunits, backendimageunits, backendarrayunits, backendactive;
86 note: here's strip order for a terrain row:
93 A0B, 01B, B1C, 12C, C2D, 23D, D3E, 34E
95 *elements++ = i + row;
97 *elements++ = i + row + 1;
100 *elements++ = i + row + 1;
103 for (y = 0;y < rows - 1;y++)
105 for (x = 0;x < columns - 1;x++)
108 *elements++ = i + columns;
110 *elements++ = i + columns + 1;
113 *elements++ = i + columns + 1;
124 for (y = 0;y < rows - 1;y++)
126 for (x = 0;x < columns - 1;x++)
130 *elements++ = i + columns;
131 *elements++ = i + columns + 1;
132 *elements++ = i + columns;
133 *elements++ = i + columns + 1;
139 int polygonelements[(POLYGONELEMENTS_MAXPOINTS-2)*3];
140 int quadelements[QUADELEMENTS_MAXQUADS*6];
142 void GL_Backend_AllocArrays(void)
146 void GL_Backend_FreeArrays(void)
150 void GL_VBOStats_f(void)
152 GL_Mesh_ListVBOs(true);
155 typedef struct gl_bufferobjectinfo_s
160 char name[MAX_QPATH];
162 gl_bufferobjectinfo_t;
164 memexpandablearray_t gl_bufferobjectinfoarray;
166 static void gl_backend_start(void)
168 Con_Print("OpenGL Backend starting...\n");
171 if (qglDrawRangeElements != NULL)
174 qglGetIntegerv(GL_MAX_ELEMENTS_VERTICES, &gl_maxdrawrangeelementsvertices);
176 qglGetIntegerv(GL_MAX_ELEMENTS_INDICES, &gl_maxdrawrangeelementsindices);
178 Con_Printf("glDrawRangeElements detected (max vertices %i, max indices %i)\n", gl_maxdrawrangeelementsvertices, gl_maxdrawrangeelementsindices);
181 backendunits = bound(1, gl_textureunits, MAX_TEXTUREUNITS);
182 backendimageunits = backendunits;
183 backendarrayunits = backendunits;
184 if (gl_support_fragment_shader)
187 qglGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS_ARB, (int *)&backendimageunits);
189 qglGetIntegerv(GL_MAX_TEXTURE_COORDS_ARB, (int *)&backendarrayunits);
191 Con_Printf("GLSL shader support detected: texture units = %i texenv, %i image, %i array\n", backendunits, backendimageunits, backendarrayunits);
192 backendimageunits = bound(1, backendimageunits, MAX_TEXTUREUNITS);
193 backendarrayunits = bound(1, backendarrayunits, MAX_TEXTUREUNITS);
195 else if (backendunits > 1)
196 Con_Printf("multitexture detected: texture units = %i\n", backendunits);
198 Con_Printf("singletexture\n");
200 GL_Backend_AllocArrays();
202 Mem_ExpandableArray_NewArray(&gl_bufferobjectinfoarray, r_main_mempool, sizeof(gl_bufferobjectinfo_t), 128);
204 Con_Printf("OpenGL backend started.\n");
208 backendactive = true;
211 static void gl_backend_shutdown(void)
214 backendimageunits = 0;
215 backendarrayunits = 0;
216 backendactive = false;
218 Con_Print("OpenGL Backend shutting down\n");
220 Mem_ExpandableArray_FreeArray(&gl_bufferobjectinfoarray);
222 GL_Backend_FreeArrays();
225 static void gl_backend_newmap(void)
229 void gl_backend_init(void)
233 for (i = 0;i < POLYGONELEMENTS_MAXPOINTS - 2;i++)
235 polygonelements[i * 3 + 0] = 0;
236 polygonelements[i * 3 + 1] = i + 1;
237 polygonelements[i * 3 + 2] = i + 2;
239 // elements for rendering a series of quads as triangles
240 for (i = 0;i < QUADELEMENTS_MAXQUADS;i++)
242 quadelements[i * 6 + 0] = i * 4;
243 quadelements[i * 6 + 1] = i * 4 + 1;
244 quadelements[i * 6 + 2] = i * 4 + 2;
245 quadelements[i * 6 + 3] = i * 4;
246 quadelements[i * 6 + 4] = i * 4 + 2;
247 quadelements[i * 6 + 5] = i * 4 + 3;
250 Cvar_RegisterVariable(&r_render);
251 Cvar_RegisterVariable(&r_waterwarp);
252 Cvar_RegisterVariable(&gl_polyblend);
253 Cvar_RegisterVariable(&v_flipped);
254 Cvar_RegisterVariable(&gl_dither);
255 Cvar_RegisterVariable(&gl_lockarrays);
256 Cvar_RegisterVariable(&gl_lockarrays_minimumvertices);
257 Cvar_RegisterVariable(&gl_vbo);
258 Cvar_RegisterVariable(&gl_paranoid);
259 Cvar_RegisterVariable(&gl_printcheckerror);
261 Cvar_SetValue("r_render", 0);
264 Cvar_RegisterVariable(&gl_mesh_drawrangeelements);
265 Cvar_RegisterVariable(&gl_mesh_testarrayelement);
266 Cvar_RegisterVariable(&gl_mesh_testmanualfeeding);
268 Cmd_AddCommand("gl_vbostats", GL_VBOStats_f, "prints a list of all buffer objects (vertex data and triangle elements) and total video memory used by them\n");
270 R_RegisterModule("GL_Backend", gl_backend_start, gl_backend_shutdown, gl_backend_newmap);
273 void GL_SetMirrorState(qboolean state);
275 void GL_SetupView_Orientation_Identity (void)
277 backend_viewmatrix = identitymatrix;
278 GL_SetMirrorState(false);
279 memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
282 void GL_SetupView_Orientation_FromEntity(const matrix4x4_t *matrix)
284 matrix4x4_t tempmatrix, basematrix;
285 Matrix4x4_Invert_Simple(&tempmatrix, matrix);
286 Matrix4x4_CreateRotate(&basematrix, -90, 1, 0, 0);
287 Matrix4x4_ConcatRotate(&basematrix, 90, 0, 0, 1);
288 Matrix4x4_Concat(&backend_viewmatrix, &basematrix, &tempmatrix);
290 GL_SetMirrorState(v_flipped.integer);
293 Matrix4x4_Transpose(&basematrix, &backend_viewmatrix);
294 Matrix4x4_ConcatScale3(&basematrix, -1, 1, 1);
295 Matrix4x4_Transpose(&backend_viewmatrix, &basematrix);
298 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[2], 1, 0, 0);
299 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[0], 0, 1, 0);
300 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[1], 0, 0, 1);
301 //Matrix4x4_ConcatTranslate(&backend_viewmatrix, -origin[0], -origin[1], -origin[2]);
302 memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
305 void GL_SetupView_Mode_Perspective (double frustumx, double frustumy, double zNear, double zFar)
311 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
312 qglLoadIdentity();CHECKGLERROR
314 qglFrustum(-frustumx * zNear, frustumx * zNear, -frustumy * zNear, frustumy * zNear, zNear, zFar);CHECKGLERROR
315 qglGetDoublev(GL_PROJECTION_MATRIX, m);CHECKGLERROR
316 Matrix4x4_FromArrayDoubleGL(&backend_projectmatrix, m);
317 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
318 GL_SetupView_Orientation_Identity();
322 void GL_SetupView_Mode_PerspectiveInfiniteFarClip (double frustumx, double frustumy, double zNear)
328 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
329 qglLoadIdentity();CHECKGLERROR
331 nudge = 1.0 - 1.0 / (1<<23);
332 m[ 0] = 1.0 / frustumx;
337 m[ 5] = 1.0 / frustumy;
346 m[14] = -2 * zNear * nudge;
348 qglLoadMatrixd(m);CHECKGLERROR
349 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
350 GL_SetupView_Orientation_Identity();
352 Matrix4x4_FromArrayDoubleGL(&backend_projectmatrix, m);
355 void GL_SetupView_Mode_Ortho (double x1, double y1, double x2, double y2, double zNear, double zFar)
361 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
362 qglLoadIdentity();CHECKGLERROR
363 qglOrtho(x1, x2, y2, y1, zNear, zFar);CHECKGLERROR
364 qglGetDoublev(GL_PROJECTION_MATRIX, m);CHECKGLERROR
365 Matrix4x4_FromArrayDoubleGL(&backend_projectmatrix, m);
366 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
367 GL_SetupView_Orientation_Identity();
371 typedef struct gltextureunit_s
373 const void *pointer_texcoord;
374 size_t pointer_texcoord_offset;
375 int pointer_texcoord_buffer;
376 int t1d, t2d, t3d, tcubemap;
378 unsigned int arraycomponents;
379 int rgbscale, alphascale;
380 int combinergb, combinealpha;
381 // FIXME: add more combine stuff
382 // texmatrixenabled exists only to avoid unnecessary texmatrix compares
383 int texmatrixenabled;
388 static struct gl_state_s
396 int colormask; // stored as bottom 4 bits: r g b a (3 2 1 0 order)
402 unsigned int clientunit;
403 gltextureunit_t units[MAX_TEXTUREUNITS];
407 int vertexbufferobject;
408 int elementbufferobject;
409 qboolean pointer_color_enabled;
410 const void *pointer_vertex;
411 const void *pointer_color;
412 size_t pointer_vertex_offset;
413 size_t pointer_color_offset;
414 int pointer_vertex_buffer;
415 int pointer_color_buffer;
419 static void GL_BindVBO(int bufferobject)
421 if (gl_state.vertexbufferobject != bufferobject)
423 gl_state.vertexbufferobject = bufferobject;
425 qglBindBufferARB(GL_ARRAY_BUFFER_ARB, bufferobject);
430 static void GL_BindEBO(int bufferobject)
432 if (gl_state.elementbufferobject != bufferobject)
434 gl_state.elementbufferobject = bufferobject;
436 qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, bufferobject);
441 void GL_SetupTextureState(void)
444 gltextureunit_t *unit;
446 gl_state.unit = MAX_TEXTUREUNITS;
447 gl_state.clientunit = MAX_TEXTUREUNITS;
448 for (i = 0;i < MAX_TEXTUREUNITS;i++)
450 unit = gl_state.units + i;
455 unit->arrayenabled = false;
456 unit->arraycomponents = 0;
457 unit->pointer_texcoord = NULL;
458 unit->pointer_texcoord_buffer = 0;
459 unit->pointer_texcoord_offset = 0;
461 unit->alphascale = 1;
462 unit->combinergb = GL_MODULATE;
463 unit->combinealpha = GL_MODULATE;
464 unit->texmatrixenabled = false;
465 unit->matrix = identitymatrix;
468 for (i = 0;i < backendimageunits;i++)
471 qglBindTexture(GL_TEXTURE_1D, 0);CHECKGLERROR
472 qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
475 qglBindTexture(GL_TEXTURE_3D, 0);CHECKGLERROR
477 if (gl_texturecubemap)
479 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
483 for (i = 0;i < backendarrayunits;i++)
485 GL_ClientActiveTexture(i);
487 qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), NULL);CHECKGLERROR
488 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
491 for (i = 0;i < backendunits;i++)
494 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
495 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
498 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
500 if (gl_texturecubemap)
502 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
504 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
505 qglLoadIdentity();CHECKGLERROR
506 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
507 if (gl_combine.integer)
509 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);CHECKGLERROR
510 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);CHECKGLERROR
511 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);CHECKGLERROR
512 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
513 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_TEXTURE);CHECKGLERROR // for GL_INTERPOLATE_ARB mode
514 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
515 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
516 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, GL_SRC_ALPHA);CHECKGLERROR
517 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_MODULATE);CHECKGLERROR
518 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);CHECKGLERROR
519 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
520 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_ARB, GL_CONSTANT_ARB);CHECKGLERROR
521 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
522 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
523 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
524 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
525 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
529 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
536 void GL_Backend_ResetState(void)
538 memset(&gl_state, 0, sizeof(gl_state));
539 gl_state.depthtest = true;
540 gl_state.alphatest = false;
541 gl_state.blendfunc1 = GL_ONE;
542 gl_state.blendfunc2 = GL_ZERO;
543 gl_state.blend = false;
544 gl_state.depthmask = GL_TRUE;
545 gl_state.colormask = 15;
546 gl_state.color4f[0] = gl_state.color4f[1] = gl_state.color4f[2] = gl_state.color4f[3] = 1;
547 gl_state.lockrange_first = 0;
548 gl_state.lockrange_count = 0;
549 gl_state.cullface = v_flipped_state ? GL_BACK : GL_FRONT; // quake is backwards, this culls back faces
550 gl_state.cullfaceenable = true;
554 qglColorMask(1, 1, 1, 1);
555 qglAlphaFunc(GL_GEQUAL, 0.5);CHECKGLERROR
556 qglDisable(GL_ALPHA_TEST);CHECKGLERROR
557 qglBlendFunc(gl_state.blendfunc1, gl_state.blendfunc2);CHECKGLERROR
558 qglDisable(GL_BLEND);CHECKGLERROR
559 qglCullFace(gl_state.cullface);CHECKGLERROR
560 qglEnable(GL_CULL_FACE);CHECKGLERROR
561 qglDepthFunc(GL_LEQUAL);CHECKGLERROR
562 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
563 qglDepthMask(gl_state.depthmask);CHECKGLERROR
565 if (gl_support_arb_vertex_buffer_object)
567 qglBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
568 qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
571 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), NULL);CHECKGLERROR
572 qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
574 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), NULL);CHECKGLERROR
575 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
577 GL_Color(0, 0, 0, 0);
578 GL_Color(1, 1, 1, 1);
580 GL_SetupTextureState();
583 void GL_ActiveTexture(unsigned int num)
585 if (gl_state.unit != num)
588 if (qglActiveTexture)
591 qglActiveTexture(GL_TEXTURE0_ARB + gl_state.unit);
597 void GL_ClientActiveTexture(unsigned int num)
599 if (gl_state.clientunit != num)
601 gl_state.clientunit = num;
602 if (qglActiveTexture)
605 qglClientActiveTexture(GL_TEXTURE0_ARB + gl_state.clientunit);
611 void GL_BlendFunc(int blendfunc1, int blendfunc2)
613 if (gl_state.blendfunc1 != blendfunc1 || gl_state.blendfunc2 != blendfunc2)
616 qglBlendFunc(gl_state.blendfunc1 = blendfunc1, gl_state.blendfunc2 = blendfunc2);CHECKGLERROR
617 if (gl_state.blendfunc2 == GL_ZERO)
619 if (gl_state.blendfunc1 == GL_ONE)
624 qglDisable(GL_BLEND);CHECKGLERROR
632 qglEnable(GL_BLEND);CHECKGLERROR
641 qglEnable(GL_BLEND);CHECKGLERROR
647 void GL_DepthMask(int state)
649 if (gl_state.depthmask != state)
652 qglDepthMask(gl_state.depthmask = state);CHECKGLERROR
656 void GL_DepthTest(int state)
658 if (gl_state.depthtest != state)
660 gl_state.depthtest = state;
662 if (gl_state.depthtest)
664 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
668 qglDisable(GL_DEPTH_TEST);CHECKGLERROR
673 void GL_DepthRange(float nearfrac, float farfrac)
675 if (gl_state.depthrange[0] != nearfrac || gl_state.depthrange[1] != farfrac)
677 gl_state.depthrange[0] = nearfrac;
678 gl_state.depthrange[1] = farfrac;
679 qglDepthRange(nearfrac, farfrac);
683 void GL_SetMirrorState(qboolean state)
685 if(!state != !v_flipped_state)
687 // change cull face mode!
688 if(gl_state.cullface == GL_BACK)
689 qglCullFace((gl_state.cullface = GL_FRONT));
690 else if(gl_state.cullface == GL_FRONT)
691 qglCullFace((gl_state.cullface = GL_BACK));
693 v_flipped_state = state;
696 void GL_CullFace(int state)
702 if(state == GL_FRONT)
704 else if(state == GL_BACK)
708 if (state != GL_NONE)
710 if (!gl_state.cullfaceenable)
712 gl_state.cullfaceenable = true;
713 qglEnable(GL_CULL_FACE);CHECKGLERROR
715 if (gl_state.cullface != state)
717 gl_state.cullface = state;
718 qglCullFace(gl_state.cullface);CHECKGLERROR
723 if (gl_state.cullfaceenable)
725 gl_state.cullfaceenable = false;
726 qglDisable(GL_CULL_FACE);CHECKGLERROR
731 void GL_AlphaTest(int state)
733 if (gl_state.alphatest != state)
735 gl_state.alphatest = state;
737 if (gl_state.alphatest)
739 qglEnable(GL_ALPHA_TEST);CHECKGLERROR
743 qglDisable(GL_ALPHA_TEST);CHECKGLERROR
748 void GL_ColorMask(int r, int g, int b, int a)
750 int state = r*8 + g*4 + b*2 + a*1;
751 if (gl_state.colormask != state)
753 gl_state.colormask = state;
755 qglColorMask((GLboolean)r, (GLboolean)g, (GLboolean)b, (GLboolean)a);CHECKGLERROR
759 void GL_Color(float cr, float cg, float cb, float ca)
761 if (gl_state.pointer_color_enabled || gl_state.color4f[0] != cr || gl_state.color4f[1] != cg || gl_state.color4f[2] != cb || gl_state.color4f[3] != ca)
763 gl_state.color4f[0] = cr;
764 gl_state.color4f[1] = cg;
765 gl_state.color4f[2] = cb;
766 gl_state.color4f[3] = ca;
768 qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);
773 void GL_LockArrays(int first, int count)
775 if (count < gl_lockarrays_minimumvertices.integer)
780 if (gl_state.lockrange_count != count || gl_state.lockrange_first != first)
782 if (gl_state.lockrange_count)
784 gl_state.lockrange_count = 0;
786 qglUnlockArraysEXT();
789 if (count && gl_supportslockarrays && gl_lockarrays.integer && r_render.integer)
791 gl_state.lockrange_first = first;
792 gl_state.lockrange_count = count;
794 qglLockArraysEXT(first, count);
800 void GL_Scissor (int x, int y, int width, int height)
803 qglScissor(x, vid.height - (y + height),width,height);
807 void GL_ScissorTest(int state)
809 if(gl_state.scissortest == state)
813 if((gl_state.scissortest = state))
814 qglEnable(GL_SCISSOR_TEST);
816 qglDisable(GL_SCISSOR_TEST);
820 void GL_Clear(int mask)
823 qglClear(mask);CHECKGLERROR
826 void GL_TransformToScreen(const vec4_t in, vec4_t out)
830 Matrix4x4_Transform4 (&backend_viewmatrix, in, temp);
831 Matrix4x4_Transform4 (&backend_projectmatrix, temp, out);
833 out[0] = r_view.x + (out[0] * iw + 1.0f) * r_view.width * 0.5f;
834 out[1] = r_view.y + r_view.height - (out[1] * iw + 1.0f) * r_view.height * 0.5f;
835 out[2] = r_view.z + (out[2] * iw + 1.0f) * r_view.depth * 0.5f;
838 // called at beginning of frame
839 void R_Mesh_Start(void)
843 if (gl_printcheckerror.integer && !gl_paranoid.integer)
845 Con_Printf("WARNING: gl_printcheckerror is on but gl_paranoid is off, turning it on...\n");
846 Cvar_SetValueQuick(&gl_paranoid, 1);
848 GL_Backend_ResetState();
851 qboolean GL_Backend_CompileShader(int programobject, GLenum shadertypeenum, const char *shadertype, int numstrings, const char **strings)
855 char compilelog[MAX_INPUTLINE];
856 shaderobject = qglCreateShaderObjectARB(shadertypeenum);CHECKGLERROR
859 qglShaderSourceARB(shaderobject, numstrings, strings, NULL);CHECKGLERROR
860 qglCompileShaderARB(shaderobject);CHECKGLERROR
861 qglGetObjectParameterivARB(shaderobject, GL_OBJECT_COMPILE_STATUS_ARB, &shadercompiled);CHECKGLERROR
862 qglGetInfoLogARB(shaderobject, sizeof(compilelog), NULL, compilelog);CHECKGLERROR
864 Con_DPrintf("%s shader compile log:\n%s\n", shadertype, compilelog);
867 qglDeleteObjectARB(shaderobject);CHECKGLERROR
870 qglAttachObjectARB(programobject, shaderobject);CHECKGLERROR
871 qglDeleteObjectARB(shaderobject);CHECKGLERROR
875 unsigned int GL_Backend_CompileProgram(int vertexstrings_count, const char **vertexstrings_list, int geometrystrings_count, const char **geometrystrings_list, int fragmentstrings_count, const char **fragmentstrings_list)
878 GLuint programobject = 0;
879 char linklog[MAX_INPUTLINE];
882 programobject = qglCreateProgramObjectARB();CHECKGLERROR
886 if (vertexstrings_count && !GL_Backend_CompileShader(programobject, GL_VERTEX_SHADER_ARB, "vertex", vertexstrings_count, vertexstrings_list))
889 #ifdef GL_GEOMETRY_SHADER_ARB
890 if (geometrystrings_count && !GL_Backend_CompileShader(programobject, GL_GEOMETRY_SHADER_ARB, "geometry", geometrystrings_count, geometrystrings_list))
894 if (fragmentstrings_count && !GL_Backend_CompileShader(programobject, GL_FRAGMENT_SHADER_ARB, "fragment", fragmentstrings_count, fragmentstrings_list))
897 qglLinkProgramARB(programobject);CHECKGLERROR
898 qglGetObjectParameterivARB(programobject, GL_OBJECT_LINK_STATUS_ARB, &programlinked);CHECKGLERROR
899 qglGetInfoLogARB(programobject, sizeof(linklog), NULL, linklog);CHECKGLERROR
902 Con_DPrintf("program link log:\n%s\n", linklog);
903 // software vertex shader is ok but software fragment shader is WAY
904 // too slow, fail program if so.
905 // NOTE: this string might be ATI specific, but that's ok because the
906 // ATI R300 chip (Radeon 9500-9800/X300) is the most likely to use a
907 // software fragment shader due to low instruction and dependent
909 if (strstr(linklog, "fragment shader will run in software"))
910 programlinked = false;
914 return programobject;
916 qglDeleteObjectARB(programobject);CHECKGLERROR
920 void GL_Backend_FreeProgram(unsigned int prog)
923 qglDeleteObjectARB(prog);
927 int gl_backend_rebindtextures;
929 void GL_Backend_RenumberElements(int *out, int count, const int *in, int offset)
934 for (i = 0;i < count;i++)
935 *out++ = *in++ + offset;
938 memcpy(out, in, sizeof(*out) * count);
941 // renders triangles using vertices from the active arrays
942 int paranoidblah = 0;
943 void R_Mesh_Draw(int firstvertex, int numvertices, int numtriangles, const int *elements, int bufferobject, size_t bufferoffset)
945 unsigned int numelements = numtriangles * 3;
946 if (numvertices < 3 || numtriangles < 1)
948 Con_Printf("R_Mesh_Draw(%d, %d, %d, %8p, %i, %p);\n", firstvertex, numvertices, numtriangles, elements, bufferobject, (void *)bufferoffset);
954 r_refdef.stats.meshes++;
955 r_refdef.stats.meshes_elements += numelements;
956 if (gl_paranoid.integer)
958 unsigned int i, j, size;
960 // note: there's no validation done here on buffer objects because it
961 // is somewhat difficult to get at the data, and gl_paranoid can be
962 // used without buffer objects if the need arises
963 // (the data could be gotten using glMapBuffer but it would be very
964 // slow due to uncachable video memory reads)
965 if (!qglIsEnabled(GL_VERTEX_ARRAY))
966 Con_Print("R_Mesh_Draw: vertex array not enabled\n");
968 if (gl_state.pointer_vertex)
969 for (j = 0, size = numvertices * 3, p = (int *)((float *)gl_state.pointer_vertex + firstvertex * 3);j < size;j++, p++)
971 if (gl_state.pointer_color_enabled)
973 if (!qglIsEnabled(GL_COLOR_ARRAY))
974 Con_Print("R_Mesh_Draw: color array set but not enabled\n");
976 if (gl_state.pointer_color && gl_state.pointer_color_enabled)
977 for (j = 0, size = numvertices * 4, p = (int *)((float *)gl_state.pointer_color + firstvertex * 4);j < size;j++, p++)
980 for (i = 0;i < backendarrayunits;i++)
982 if (gl_state.units[i].arrayenabled)
984 GL_ClientActiveTexture(i);
985 if (!qglIsEnabled(GL_TEXTURE_COORD_ARRAY))
986 Con_Print("R_Mesh_Draw: texcoord array set but not enabled\n");
988 if (gl_state.units[i].pointer_texcoord && gl_state.units[i].arrayenabled)
989 for (j = 0, size = numvertices * gl_state.units[i].arraycomponents, p = (int *)((float *)gl_state.units[i].pointer_texcoord + firstvertex * gl_state.units[i].arraycomponents);j < size;j++, p++)
993 for (i = 0;i < (unsigned int) numtriangles * 3;i++)
995 if (elements[i] < firstvertex || elements[i] >= firstvertex + numvertices)
997 Con_Printf("R_Mesh_Draw: invalid vertex index %i (outside range %i - %i) in elements list\n", elements[i], firstvertex, firstvertex + numvertices);
1003 if (r_render.integer)
1006 if (gl_mesh_testmanualfeeding.integer)
1010 qglBegin(GL_TRIANGLES);
1011 for (i = 0;i < (unsigned int) numtriangles * 3;i++)
1013 for (j = 0;j < backendarrayunits;j++)
1015 if (gl_state.units[j].pointer_texcoord && gl_state.units[j].arrayenabled)
1017 if (backendarrayunits > 1)
1019 if (gl_state.units[j].arraycomponents == 4)
1021 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 4;
1022 qglMultiTexCoord4f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2], p[3]);
1024 else if (gl_state.units[j].arraycomponents == 3)
1026 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 3;
1027 qglMultiTexCoord3f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2]);
1029 else if (gl_state.units[j].arraycomponents == 2)
1031 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 2;
1032 qglMultiTexCoord2f(GL_TEXTURE0_ARB + j, p[0], p[1]);
1036 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 1;
1037 qglMultiTexCoord1f(GL_TEXTURE0_ARB + j, p[0]);
1042 if (gl_state.units[j].arraycomponents == 4)
1044 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 4;
1045 qglTexCoord4f(p[0], p[1], p[2], p[3]);
1047 else if (gl_state.units[j].arraycomponents == 3)
1049 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 3;
1050 qglTexCoord3f(p[0], p[1], p[2]);
1052 else if (gl_state.units[j].arraycomponents == 2)
1054 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 2;
1055 qglTexCoord2f(p[0], p[1]);
1059 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 1;
1060 qglTexCoord1f(p[0]);
1065 if (gl_state.pointer_color && gl_state.pointer_color_enabled)
1067 p = ((const GLfloat *)(gl_state.pointer_color)) + elements[i] * 4;
1068 qglColor4f(p[0], p[1], p[2], p[3]);
1070 p = ((const GLfloat *)(gl_state.pointer_vertex)) + elements[i] * 3;
1071 qglVertex3f(p[0], p[1], p[2]);
1076 else if (gl_mesh_testarrayelement.integer)
1079 qglBegin(GL_TRIANGLES);
1080 for (i = 0;i < numtriangles * 3;i++)
1082 qglArrayElement(elements[i]);
1087 else if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
1089 GL_BindEBO(bufferobject);
1090 qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices, numelements, GL_UNSIGNED_INT, bufferobject ? (void *)bufferoffset : elements);
1095 GL_BindEBO(bufferobject);
1096 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, bufferobject ? (void *)bufferoffset : elements);
1102 // restores backend state, used when done with 3D rendering
1103 void R_Mesh_Finish(void)
1108 GL_LockArrays(0, 0);
1111 for (i = 0;i < backendimageunits;i++)
1113 GL_ActiveTexture(i);
1114 qglBindTexture(GL_TEXTURE_1D, 0);CHECKGLERROR
1115 qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
1118 qglBindTexture(GL_TEXTURE_3D, 0);CHECKGLERROR
1120 if (gl_texturecubemap)
1122 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
1125 for (i = 0;i < backendarrayunits;i++)
1127 GL_ActiveTexture(backendarrayunits - 1 - i);
1128 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1130 for (i = 0;i < backendunits;i++)
1132 GL_ActiveTexture(backendunits - 1 - i);
1133 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1134 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1137 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1139 if (gl_texturecubemap)
1141 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1143 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
1144 if (gl_combine.integer)
1146 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
1147 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
1150 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1151 qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
1153 qglDisable(GL_BLEND);CHECKGLERROR
1154 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
1155 qglDepthMask(GL_TRUE);CHECKGLERROR
1156 qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);CHECKGLERROR
1159 int R_Mesh_CreateStaticBufferObject(unsigned int target, void *data, size_t size, const char *name)
1161 gl_bufferobjectinfo_t *info;
1162 GLuint bufferobject;
1164 if (!gl_vbo.integer)
1167 qglGenBuffersARB(1, &bufferobject);
1170 case GL_ELEMENT_ARRAY_BUFFER_ARB: GL_BindEBO(bufferobject);break;
1171 case GL_ARRAY_BUFFER_ARB: GL_BindVBO(bufferobject);break;
1172 default: Sys_Error("R_Mesh_CreateStaticBufferObject: unknown target type %i\n", target);return 0;
1174 qglBufferDataARB(target, size, data, GL_STATIC_DRAW_ARB);
1176 info = Mem_ExpandableArray_AllocRecord(&gl_bufferobjectinfoarray);
1177 memset(info, 0, sizeof(*info));
1178 info->target = target;
1179 info->object = bufferobject;
1181 strlcpy(info->name, name, sizeof(info->name));
1183 return (int)bufferobject;
1186 void R_Mesh_DestroyBufferObject(int bufferobject)
1189 gl_bufferobjectinfo_t *info;
1191 qglDeleteBuffersARB(1, (GLuint *)&bufferobject);
1193 endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
1194 for (i = 0;i < endindex;i++)
1196 info = Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
1199 if (info->object == bufferobject)
1201 Mem_ExpandableArray_FreeRecord(&gl_bufferobjectinfoarray, (void *)info);
1207 void GL_Mesh_ListVBOs(qboolean printeach)
1210 size_t ebocount = 0, ebomemory = 0;
1211 size_t vbocount = 0, vbomemory = 0;
1212 gl_bufferobjectinfo_t *info;
1213 endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
1214 for (i = 0;i < endindex;i++)
1216 info = Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
1219 switch(info->target)
1221 case GL_ELEMENT_ARRAY_BUFFER_ARB: ebocount++;ebomemory += info->size;if (printeach) Con_Printf("EBO #%i %s = %i bytes\n", info->object, info->name, (int)info->size);break;
1222 case GL_ARRAY_BUFFER_ARB: vbocount++;vbomemory += info->size;if (printeach) Con_Printf("VBO #%i %s = %i bytes\n", info->object, info->name, (int)info->size);break;
1223 default: Con_Printf("gl_vbostats: unknown target type %i\n", info->target);break;
1226 Con_Printf("vertex buffers: %i element buffers totalling %i bytes (%.3f MB), %i vertex buffers totalling %i bytes (%.3f MB), combined %i bytes (%.3fMB)\n", (int)ebocount, (int)ebomemory, ebomemory / 1048576.0, (int)vbocount, (int)vbomemory, vbomemory / 1048576.0, (int)(ebomemory + vbomemory), (ebomemory + vbomemory) / 1048576.0);
1229 void R_Mesh_Matrix(const matrix4x4_t *matrix)
1231 if (memcmp(matrix, &backend_modelmatrix, sizeof(matrix4x4_t)))
1233 double glmatrix[16];
1234 backend_modelmatrix = *matrix;
1235 Matrix4x4_Concat(&backend_modelviewmatrix, &backend_viewmatrix, matrix);
1236 Matrix4x4_ToArrayDoubleGL(&backend_modelviewmatrix, glmatrix);
1238 qglLoadMatrixd(glmatrix);CHECKGLERROR
1242 void R_Mesh_VertexPointer(const float *vertex3f, int bufferobject, size_t bufferoffset)
1244 if (!gl_vbo.integer)
1246 if (gl_state.pointer_vertex != vertex3f || gl_state.pointer_vertex_buffer != bufferobject || gl_state.pointer_vertex_offset != bufferoffset)
1248 gl_state.pointer_vertex = vertex3f;
1249 gl_state.pointer_vertex_buffer = bufferobject;
1250 gl_state.pointer_vertex_offset = bufferoffset;
1252 GL_BindVBO(bufferobject);
1253 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), bufferobject ? (void *)bufferoffset : vertex3f);CHECKGLERROR
1257 void R_Mesh_ColorPointer(const float *color4f, int bufferobject, size_t bufferoffset)
1259 // note: this can not rely on bufferobject to decide whether a color array
1260 // is supplied, because surfmesh_t shares one vbo for all arrays, which
1261 // means that a valid vbo may be supplied even if there is no color array.
1264 if (!gl_vbo.integer)
1266 // caller wants color array enabled
1267 if (!gl_state.pointer_color_enabled)
1269 gl_state.pointer_color_enabled = true;
1271 qglEnableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1273 if (gl_state.pointer_color != color4f || gl_state.pointer_color_buffer != bufferobject || gl_state.pointer_color_offset != bufferoffset)
1275 gl_state.pointer_color = color4f;
1276 gl_state.pointer_color_buffer = bufferobject;
1277 gl_state.pointer_color_offset = bufferoffset;
1279 GL_BindVBO(bufferobject);
1280 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), bufferobject ? (void *)bufferoffset : color4f);CHECKGLERROR
1285 // caller wants color array disabled
1286 if (gl_state.pointer_color_enabled)
1288 gl_state.pointer_color_enabled = false;
1290 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1291 // when color array is on the glColor gets trashed, set it again
1292 qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);CHECKGLERROR
1297 void R_Mesh_TexCoordPointer(unsigned int unitnum, unsigned int numcomponents, const float *texcoord, int bufferobject, size_t bufferoffset)
1299 gltextureunit_t *unit = gl_state.units + unitnum;
1300 // update array settings
1302 // note: there is no need to check bufferobject here because all cases
1303 // that involve a valid bufferobject also supply a texcoord array
1306 if (!gl_vbo.integer)
1308 // texture array unit is enabled, enable the array
1309 if (!unit->arrayenabled)
1311 unit->arrayenabled = true;
1312 GL_ClientActiveTexture(unitnum);
1313 qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1316 if (unit->pointer_texcoord != texcoord || unit->pointer_texcoord_buffer != bufferobject || unit->pointer_texcoord_offset != bufferoffset || unit->arraycomponents != numcomponents)
1318 unit->pointer_texcoord = texcoord;
1319 unit->pointer_texcoord_buffer = bufferobject;
1320 unit->pointer_texcoord_offset = bufferoffset;
1321 unit->arraycomponents = numcomponents;
1322 GL_ClientActiveTexture(unitnum);
1323 GL_BindVBO(bufferobject);
1324 qglTexCoordPointer(unit->arraycomponents, GL_FLOAT, sizeof(float) * unit->arraycomponents, bufferobject ? (void *)bufferoffset : texcoord);CHECKGLERROR
1329 // texture array unit is disabled, disable the array
1330 if (unit->arrayenabled)
1332 unit->arrayenabled = false;
1333 GL_ClientActiveTexture(unitnum);
1334 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1339 void R_Mesh_TexBindAll(unsigned int unitnum, int tex1d, int tex2d, int tex3d, int texcubemap)
1341 gltextureunit_t *unit = gl_state.units + unitnum;
1342 if (unitnum >= backendimageunits)
1344 // update 1d texture binding
1345 if (unit->t1d != tex1d)
1347 GL_ActiveTexture(unitnum);
1348 if (unitnum < backendunits)
1354 qglEnable(GL_TEXTURE_1D);CHECKGLERROR
1361 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1366 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1368 // update 2d texture binding
1369 if (unit->t2d != tex2d)
1371 GL_ActiveTexture(unitnum);
1372 if (unitnum < backendunits)
1378 qglEnable(GL_TEXTURE_2D);CHECKGLERROR
1385 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1390 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1392 // update 3d texture binding
1393 if (unit->t3d != tex3d)
1395 GL_ActiveTexture(unitnum);
1396 if (unitnum < backendunits)
1402 qglEnable(GL_TEXTURE_3D);CHECKGLERROR
1409 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1414 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1416 // update cubemap texture binding
1417 if (unit->tcubemap != texcubemap)
1419 GL_ActiveTexture(unitnum);
1420 if (unitnum < backendunits)
1424 if (unit->tcubemap == 0)
1426 qglEnable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1433 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1437 unit->tcubemap = texcubemap;
1438 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1442 void R_Mesh_TexBind1D(unsigned int unitnum, int texnum)
1444 gltextureunit_t *unit = gl_state.units + unitnum;
1445 if (unitnum >= backendimageunits)
1447 // update 1d texture binding
1448 if (unit->t1d != texnum)
1450 GL_ActiveTexture(unitnum);
1451 if (unitnum < backendunits)
1457 qglEnable(GL_TEXTURE_1D);CHECKGLERROR
1464 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1469 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1471 // update 2d texture binding
1474 GL_ActiveTexture(unitnum);
1475 if (unitnum < backendunits)
1479 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1483 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1485 // update 3d texture binding
1488 GL_ActiveTexture(unitnum);
1489 if (unitnum < backendunits)
1493 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1497 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1499 // update cubemap texture binding
1502 GL_ActiveTexture(unitnum);
1503 if (unitnum < backendunits)
1507 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1511 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1515 void R_Mesh_TexBind(unsigned int unitnum, int texnum)
1517 gltextureunit_t *unit = gl_state.units + unitnum;
1518 if (unitnum >= backendimageunits)
1520 // update 1d texture binding
1523 GL_ActiveTexture(unitnum);
1524 if (unitnum < backendunits)
1528 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1532 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1534 // update 2d texture binding
1535 if (unit->t2d != texnum)
1537 GL_ActiveTexture(unitnum);
1538 if (unitnum < backendunits)
1544 qglEnable(GL_TEXTURE_2D);CHECKGLERROR
1551 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1556 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1558 // update 3d texture binding
1561 GL_ActiveTexture(unitnum);
1562 if (unitnum < backendunits)
1566 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1570 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1572 // update cubemap texture binding
1573 if (unit->tcubemap != 0)
1575 GL_ActiveTexture(unitnum);
1576 if (unitnum < backendunits)
1580 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1584 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1588 void R_Mesh_TexBind3D(unsigned int unitnum, int texnum)
1590 gltextureunit_t *unit = gl_state.units + unitnum;
1591 if (unitnum >= backendimageunits)
1593 // update 1d texture binding
1596 GL_ActiveTexture(unitnum);
1597 if (unitnum < backendunits)
1601 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1605 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1607 // update 2d texture binding
1610 GL_ActiveTexture(unitnum);
1611 if (unitnum < backendunits)
1615 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1619 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1621 // update 3d texture binding
1622 if (unit->t3d != texnum)
1624 GL_ActiveTexture(unitnum);
1625 if (unitnum < backendunits)
1631 qglEnable(GL_TEXTURE_3D);CHECKGLERROR
1638 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1643 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1645 // update cubemap texture binding
1646 if (unit->tcubemap != 0)
1648 GL_ActiveTexture(unitnum);
1649 if (unitnum < backendunits)
1653 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1657 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1661 void R_Mesh_TexBindCubeMap(unsigned int unitnum, int texnum)
1663 gltextureunit_t *unit = gl_state.units + unitnum;
1664 if (unitnum >= backendimageunits)
1666 // update 1d texture binding
1669 GL_ActiveTexture(unitnum);
1670 if (unitnum < backendunits)
1674 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1678 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1680 // update 2d texture binding
1683 GL_ActiveTexture(unitnum);
1684 if (unitnum < backendunits)
1688 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1692 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1694 // update 3d texture binding
1697 GL_ActiveTexture(unitnum);
1698 if (unitnum < backendunits)
1702 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1706 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1708 // update cubemap texture binding
1709 if (unit->tcubemap != texnum)
1711 GL_ActiveTexture(unitnum);
1712 if (unitnum < backendunits)
1716 if (unit->tcubemap == 0)
1718 qglEnable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1725 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1729 unit->tcubemap = texnum;
1730 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1734 void R_Mesh_TexMatrix(unsigned int unitnum, const matrix4x4_t *matrix)
1736 gltextureunit_t *unit = gl_state.units + unitnum;
1737 if (matrix->m[3][3])
1739 // texmatrix specified, check if it is different
1740 if (!unit->texmatrixenabled || memcmp(&unit->matrix, matrix, sizeof(matrix4x4_t)))
1742 double glmatrix[16];
1743 unit->texmatrixenabled = true;
1744 unit->matrix = *matrix;
1746 Matrix4x4_ToArrayDoubleGL(&unit->matrix, glmatrix);
1747 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1748 GL_ActiveTexture(unitnum);
1749 qglLoadMatrixd(glmatrix);CHECKGLERROR
1750 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
1755 // no texmatrix specified, revert to identity
1756 if (unit->texmatrixenabled)
1758 unit->texmatrixenabled = false;
1760 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1761 GL_ActiveTexture(unitnum);
1762 qglLoadIdentity();CHECKGLERROR
1763 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
1768 void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, int rgbscale, int alphascale)
1770 gltextureunit_t *unit = gl_state.units + unitnum;
1772 if (gl_combine.integer)
1774 // GL_ARB_texture_env_combine
1776 combinergb = GL_MODULATE;
1778 combinealpha = GL_MODULATE;
1783 if (unit->combinergb != combinergb)
1785 unit->combinergb = combinergb;
1786 GL_ActiveTexture(unitnum);
1787 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
1789 if (unit->combinealpha != combinealpha)
1791 unit->combinealpha = combinealpha;
1792 GL_ActiveTexture(unitnum);
1793 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
1795 if (unit->rgbscale != rgbscale)
1797 GL_ActiveTexture(unitnum);
1798 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = rgbscale));CHECKGLERROR
1800 if (unit->alphascale != alphascale)
1802 GL_ActiveTexture(unitnum);
1803 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = alphascale));CHECKGLERROR
1810 combinergb = GL_MODULATE;
1811 if (unit->combinergb != combinergb)
1813 unit->combinergb = combinergb;
1814 GL_ActiveTexture(unitnum);
1815 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR
1820 void R_Mesh_TextureState(const rmeshstate_t *m)
1827 if (gl_backend_rebindtextures)
1829 gl_backend_rebindtextures = false;
1830 GL_SetupTextureState();
1834 for (i = 0;i < backendimageunits;i++)
1835 R_Mesh_TexBindAll(i, m->tex1d[i], m->tex[i], m->tex3d[i], m->texcubemap[i]);
1836 for (i = 0;i < backendarrayunits;i++)
1838 if (m->pointer_texcoord3f[i])
1839 R_Mesh_TexCoordPointer(i, 3, m->pointer_texcoord3f[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
1841 R_Mesh_TexCoordPointer(i, 2, m->pointer_texcoord[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
1843 for (i = 0;i < backendunits;i++)
1845 R_Mesh_TexMatrix(i, &m->texmatrix[i]);
1846 R_Mesh_TexCombine(i, m->texcombinergb[i], m->texcombinealpha[i], m->texrgbscale[i], m->texalphascale[i]);
1851 void R_Mesh_ResetTextureState(void)
1853 unsigned int unitnum;
1858 if (gl_backend_rebindtextures)
1860 gl_backend_rebindtextures = false;
1861 GL_SetupTextureState();
1865 for (unitnum = 0;unitnum < backendimageunits;unitnum++)
1867 gltextureunit_t *unit = gl_state.units + unitnum;
1868 // update 1d texture binding
1871 GL_ActiveTexture(unitnum);
1872 if (unitnum < backendunits)
1874 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1877 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1879 // update 2d texture binding
1882 GL_ActiveTexture(unitnum);
1883 if (unitnum < backendunits)
1885 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1888 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1890 // update 3d texture binding
1893 GL_ActiveTexture(unitnum);
1894 if (unitnum < backendunits)
1896 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1899 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1901 // update cubemap texture binding
1904 GL_ActiveTexture(unitnum);
1905 if (unitnum < backendunits)
1907 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1910 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1913 for (unitnum = 0;unitnum < backendarrayunits;unitnum++)
1915 gltextureunit_t *unit = gl_state.units + unitnum;
1916 // texture array unit is disabled, disable the array
1917 if (unit->arrayenabled)
1919 unit->arrayenabled = false;
1920 GL_ClientActiveTexture(unitnum);
1921 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1924 for (unitnum = 0;unitnum < backendunits;unitnum++)
1926 gltextureunit_t *unit = gl_state.units + unitnum;
1927 // no texmatrix specified, revert to identity
1928 if (unit->texmatrixenabled)
1930 unit->texmatrixenabled = false;
1932 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1933 GL_ActiveTexture(unitnum);
1934 qglLoadIdentity();CHECKGLERROR
1935 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
1937 if (gl_combine.integer)
1939 // GL_ARB_texture_env_combine
1940 if (unit->combinergb != GL_MODULATE)
1942 unit->combinergb = GL_MODULATE;
1943 GL_ActiveTexture(unitnum);
1944 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
1946 if (unit->combinealpha != GL_MODULATE)
1948 unit->combinealpha = GL_MODULATE;
1949 GL_ActiveTexture(unitnum);
1950 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
1952 if (unit->rgbscale != 1)
1954 GL_ActiveTexture(unitnum);
1955 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = 1));CHECKGLERROR
1957 if (unit->alphascale != 1)
1959 GL_ActiveTexture(unitnum);
1960 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = 1));CHECKGLERROR
1966 if (unit->combinergb != GL_MODULATE)
1968 unit->combinergb = GL_MODULATE;
1969 GL_ActiveTexture(unitnum);
1970 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR
1976 void R_Mesh_Draw_ShowTris(int firstvertex, int numvertices, int numtriangles, const int *elements)
1980 for (;numtriangles;numtriangles--, elements += 3)
1982 qglArrayElement(elements[0]);qglArrayElement(elements[1]);
1983 qglArrayElement(elements[1]);qglArrayElement(elements[2]);
1984 qglArrayElement(elements[2]);qglArrayElement(elements[0]);