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_SetupView_Orientation_Identity (void)
275 backend_viewmatrix = identitymatrix;
276 v_flipped_state = false;
277 memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
280 void GL_SetupView_Orientation_FromEntity(const matrix4x4_t *matrix)
282 matrix4x4_t tempmatrix, basematrix;
283 Matrix4x4_Invert_Simple(&tempmatrix, matrix);
284 Matrix4x4_CreateRotate(&basematrix, -90, 1, 0, 0);
285 Matrix4x4_ConcatRotate(&basematrix, 90, 0, 0, 1);
286 Matrix4x4_Concat(&backend_viewmatrix, &basematrix, &tempmatrix);
288 v_flipped_state = v_flipped.integer;
291 Matrix4x4_Transpose(&basematrix, &backend_viewmatrix);
292 Matrix4x4_ConcatScale3(&basematrix, -1, 1, 1);
293 Matrix4x4_Transpose(&backend_viewmatrix, &basematrix);
296 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[2], 1, 0, 0);
297 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[0], 0, 1, 0);
298 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[1], 0, 0, 1);
299 //Matrix4x4_ConcatTranslate(&backend_viewmatrix, -origin[0], -origin[1], -origin[2]);
300 memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
303 void GL_SetupView_Mode_Perspective (double frustumx, double frustumy, double zNear, double zFar)
309 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
310 qglLoadIdentity();CHECKGLERROR
312 qglFrustum(-frustumx * zNear, frustumx * zNear, -frustumy * zNear, frustumy * zNear, zNear, zFar);CHECKGLERROR
313 qglGetDoublev(GL_PROJECTION_MATRIX, m);CHECKGLERROR
314 Matrix4x4_FromArrayDoubleGL(&backend_projectmatrix, m);
315 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
316 GL_SetupView_Orientation_Identity();
320 void GL_SetupView_Mode_PerspectiveInfiniteFarClip (double frustumx, double frustumy, double zNear)
326 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
327 qglLoadIdentity();CHECKGLERROR
329 nudge = 1.0 - 1.0 / (1<<23);
330 m[ 0] = 1.0 / frustumx;
335 m[ 5] = 1.0 / frustumy;
344 m[14] = -2 * zNear * nudge;
346 qglLoadMatrixd(m);CHECKGLERROR
347 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
348 GL_SetupView_Orientation_Identity();
350 Matrix4x4_FromArrayDoubleGL(&backend_projectmatrix, m);
353 void GL_SetupView_Mode_Ortho (double x1, double y1, double x2, double y2, double zNear, double zFar)
359 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
360 qglLoadIdentity();CHECKGLERROR
361 qglOrtho(x1, x2, y2, y1, zNear, zFar);CHECKGLERROR
362 qglGetDoublev(GL_PROJECTION_MATRIX, m);CHECKGLERROR
363 Matrix4x4_FromArrayDoubleGL(&backend_projectmatrix, m);
364 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
365 GL_SetupView_Orientation_Identity();
369 typedef struct gltextureunit_s
371 const void *pointer_texcoord;
372 size_t pointer_texcoord_offset;
373 int pointer_texcoord_buffer;
374 int t1d, t2d, t3d, tcubemap;
376 unsigned int arraycomponents;
377 int rgbscale, alphascale;
378 int combinergb, combinealpha;
379 // FIXME: add more combine stuff
380 // texmatrixenabled exists only to avoid unnecessary texmatrix compares
381 int texmatrixenabled;
386 static struct gl_state_s
394 int colormask; // stored as bottom 4 bits: r g b a (3 2 1 0 order)
400 unsigned int clientunit;
401 gltextureunit_t units[MAX_TEXTUREUNITS];
405 int vertexbufferobject;
406 int elementbufferobject;
407 qboolean pointer_color_enabled;
408 const void *pointer_vertex;
409 const void *pointer_color;
410 size_t pointer_vertex_offset;
411 size_t pointer_color_offset;
412 int pointer_vertex_buffer;
413 int pointer_color_buffer;
417 static void GL_BindVBO(int bufferobject)
419 if (gl_state.vertexbufferobject != bufferobject)
421 gl_state.vertexbufferobject = bufferobject;
423 qglBindBufferARB(GL_ARRAY_BUFFER_ARB, bufferobject);
428 static void GL_BindEBO(int bufferobject)
430 if (gl_state.elementbufferobject != bufferobject)
432 gl_state.elementbufferobject = bufferobject;
434 qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, bufferobject);
439 void GL_SetupTextureState(void)
442 gltextureunit_t *unit;
444 gl_state.unit = MAX_TEXTUREUNITS;
445 gl_state.clientunit = MAX_TEXTUREUNITS;
446 for (i = 0;i < MAX_TEXTUREUNITS;i++)
448 unit = gl_state.units + i;
453 unit->arrayenabled = false;
454 unit->arraycomponents = 0;
455 unit->pointer_texcoord = NULL;
456 unit->pointer_texcoord_buffer = 0;
457 unit->pointer_texcoord_offset = 0;
459 unit->alphascale = 1;
460 unit->combinergb = GL_MODULATE;
461 unit->combinealpha = GL_MODULATE;
462 unit->texmatrixenabled = false;
463 unit->matrix = identitymatrix;
466 for (i = 0;i < backendimageunits;i++)
469 qglBindTexture(GL_TEXTURE_1D, 0);CHECKGLERROR
470 qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
473 qglBindTexture(GL_TEXTURE_3D, 0);CHECKGLERROR
475 if (gl_texturecubemap)
477 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
481 for (i = 0;i < backendarrayunits;i++)
483 GL_ClientActiveTexture(i);
485 qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), NULL);CHECKGLERROR
486 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
489 for (i = 0;i < backendunits;i++)
492 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
493 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
496 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
498 if (gl_texturecubemap)
500 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
502 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
503 qglLoadIdentity();CHECKGLERROR
504 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
505 if (gl_combine.integer)
507 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);CHECKGLERROR
508 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);CHECKGLERROR
509 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);CHECKGLERROR
510 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
511 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_TEXTURE);CHECKGLERROR // for GL_INTERPOLATE_ARB mode
512 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
513 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
514 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, GL_SRC_ALPHA);CHECKGLERROR
515 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_MODULATE);CHECKGLERROR
516 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);CHECKGLERROR
517 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
518 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_ARB, GL_CONSTANT_ARB);CHECKGLERROR
519 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
520 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
521 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
522 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
523 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
527 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
534 void GL_Backend_ResetState(void)
536 memset(&gl_state, 0, sizeof(gl_state));
537 gl_state.depthtest = true;
538 gl_state.alphatest = false;
539 gl_state.blendfunc1 = GL_ONE;
540 gl_state.blendfunc2 = GL_ZERO;
541 gl_state.blend = false;
542 gl_state.depthmask = GL_TRUE;
543 gl_state.colormask = 15;
544 gl_state.color4f[0] = gl_state.color4f[1] = gl_state.color4f[2] = gl_state.color4f[3] = 1;
545 gl_state.lockrange_first = 0;
546 gl_state.lockrange_count = 0;
547 gl_state.cullface = GL_FRONT; // quake is backwards, this culls back faces
548 gl_state.cullfaceenable = true;
552 qglColorMask(1, 1, 1, 1);
553 qglAlphaFunc(GL_GEQUAL, 0.5);CHECKGLERROR
554 qglDisable(GL_ALPHA_TEST);CHECKGLERROR
555 qglBlendFunc(gl_state.blendfunc1, gl_state.blendfunc2);CHECKGLERROR
556 qglDisable(GL_BLEND);CHECKGLERROR
557 qglCullFace(gl_state.cullface);CHECKGLERROR
558 qglEnable(GL_CULL_FACE);CHECKGLERROR
559 qglDepthFunc(GL_LEQUAL);CHECKGLERROR
560 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
561 qglDepthMask(gl_state.depthmask);CHECKGLERROR
563 if (gl_support_arb_vertex_buffer_object)
565 qglBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
566 qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
569 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), NULL);CHECKGLERROR
570 qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
572 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), NULL);CHECKGLERROR
573 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
575 GL_Color(0, 0, 0, 0);
576 GL_Color(1, 1, 1, 1);
578 GL_SetupTextureState();
581 void GL_ActiveTexture(unsigned int num)
583 if (gl_state.unit != num)
586 if (qglActiveTexture)
589 qglActiveTexture(GL_TEXTURE0_ARB + gl_state.unit);
595 void GL_ClientActiveTexture(unsigned int num)
597 if (gl_state.clientunit != num)
599 gl_state.clientunit = num;
600 if (qglActiveTexture)
603 qglClientActiveTexture(GL_TEXTURE0_ARB + gl_state.clientunit);
609 void GL_BlendFunc(int blendfunc1, int blendfunc2)
611 if (gl_state.blendfunc1 != blendfunc1 || gl_state.blendfunc2 != blendfunc2)
614 qglBlendFunc(gl_state.blendfunc1 = blendfunc1, gl_state.blendfunc2 = blendfunc2);CHECKGLERROR
615 if (gl_state.blendfunc2 == GL_ZERO)
617 if (gl_state.blendfunc1 == GL_ONE)
622 qglDisable(GL_BLEND);CHECKGLERROR
630 qglEnable(GL_BLEND);CHECKGLERROR
639 qglEnable(GL_BLEND);CHECKGLERROR
645 void GL_DepthMask(int state)
647 if (gl_state.depthmask != state)
650 qglDepthMask(gl_state.depthmask = state);CHECKGLERROR
654 void GL_DepthTest(int state)
656 if (gl_state.depthtest != state)
658 gl_state.depthtest = state;
660 if (gl_state.depthtest)
662 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
666 qglDisable(GL_DEPTH_TEST);CHECKGLERROR
671 void GL_DepthRange(float nearfrac, float farfrac)
673 if (gl_state.depthrange[0] != nearfrac || gl_state.depthrange[1] != farfrac)
675 gl_state.depthrange[0] = nearfrac;
676 gl_state.depthrange[1] = farfrac;
677 qglDepthRange(nearfrac, farfrac);
681 void GL_CullFace(int state)
687 if(state == GL_FRONT)
689 else if(state == GL_BACK)
693 if (state != GL_NONE)
695 if (!gl_state.cullfaceenable)
697 gl_state.cullfaceenable = true;
698 qglEnable(GL_CULL_FACE);CHECKGLERROR
700 if (gl_state.cullface != state)
702 gl_state.cullface = state;
703 qglCullFace(gl_state.cullface);CHECKGLERROR
708 if (gl_state.cullfaceenable)
710 gl_state.cullfaceenable = false;
711 qglDisable(GL_CULL_FACE);CHECKGLERROR
716 void GL_AlphaTest(int state)
718 if (gl_state.alphatest != state)
720 gl_state.alphatest = state;
722 if (gl_state.alphatest)
724 qglEnable(GL_ALPHA_TEST);CHECKGLERROR
728 qglDisable(GL_ALPHA_TEST);CHECKGLERROR
733 void GL_ColorMask(int r, int g, int b, int a)
735 int state = r*8 + g*4 + b*2 + a*1;
736 if (gl_state.colormask != state)
738 gl_state.colormask = state;
740 qglColorMask((GLboolean)r, (GLboolean)g, (GLboolean)b, (GLboolean)a);CHECKGLERROR
744 void GL_Color(float cr, float cg, float cb, float ca)
746 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)
748 gl_state.color4f[0] = cr;
749 gl_state.color4f[1] = cg;
750 gl_state.color4f[2] = cb;
751 gl_state.color4f[3] = ca;
753 qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);
758 void GL_LockArrays(int first, int count)
760 if (count < gl_lockarrays_minimumvertices.integer)
765 if (gl_state.lockrange_count != count || gl_state.lockrange_first != first)
767 if (gl_state.lockrange_count)
769 gl_state.lockrange_count = 0;
771 qglUnlockArraysEXT();
774 if (count && gl_supportslockarrays && gl_lockarrays.integer && r_render.integer)
776 gl_state.lockrange_first = first;
777 gl_state.lockrange_count = count;
779 qglLockArraysEXT(first, count);
785 void GL_Scissor (int x, int y, int width, int height)
788 qglScissor(x, vid.height - (y + height),width,height);
792 void GL_ScissorTest(int state)
794 if(gl_state.scissortest == state)
798 if((gl_state.scissortest = state))
799 qglEnable(GL_SCISSOR_TEST);
801 qglDisable(GL_SCISSOR_TEST);
805 void GL_Clear(int mask)
808 qglClear(mask);CHECKGLERROR
811 void GL_TransformToScreen(const vec4_t in, vec4_t out)
815 Matrix4x4_Transform4 (&backend_viewmatrix, in, temp);
816 Matrix4x4_Transform4 (&backend_projectmatrix, temp, out);
818 out[0] = r_view.x + (out[0] * iw + 1.0f) * r_view.width * 0.5f;
819 out[1] = r_view.y + r_view.height - (out[1] * iw + 1.0f) * r_view.height * 0.5f;
820 out[2] = r_view.z + (out[2] * iw + 1.0f) * r_view.depth * 0.5f;
823 // called at beginning of frame
824 void R_Mesh_Start(void)
828 if (gl_printcheckerror.integer && !gl_paranoid.integer)
830 Con_Printf("WARNING: gl_printcheckerror is on but gl_paranoid is off, turning it on...\n");
831 Cvar_SetValueQuick(&gl_paranoid, 1);
833 GL_Backend_ResetState();
836 qboolean GL_Backend_CompileShader(int programobject, GLenum shadertypeenum, const char *shadertype, int numstrings, const char **strings)
840 char compilelog[MAX_INPUTLINE];
841 shaderobject = qglCreateShaderObjectARB(shadertypeenum);CHECKGLERROR
844 qglShaderSourceARB(shaderobject, numstrings, strings, NULL);CHECKGLERROR
845 qglCompileShaderARB(shaderobject);CHECKGLERROR
846 qglGetObjectParameterivARB(shaderobject, GL_OBJECT_COMPILE_STATUS_ARB, &shadercompiled);CHECKGLERROR
847 qglGetInfoLogARB(shaderobject, sizeof(compilelog), NULL, compilelog);CHECKGLERROR
849 Con_DPrintf("%s shader compile log:\n%s\n", shadertype, compilelog);
852 qglDeleteObjectARB(shaderobject);CHECKGLERROR
855 qglAttachObjectARB(programobject, shaderobject);CHECKGLERROR
856 qglDeleteObjectARB(shaderobject);CHECKGLERROR
860 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)
863 GLuint programobject = 0;
864 char linklog[MAX_INPUTLINE];
867 programobject = qglCreateProgramObjectARB();CHECKGLERROR
871 if (vertexstrings_count && !GL_Backend_CompileShader(programobject, GL_VERTEX_SHADER_ARB, "vertex", vertexstrings_count, vertexstrings_list))
874 #ifdef GL_GEOMETRY_SHADER_ARB
875 if (geometrystrings_count && !GL_Backend_CompileShader(programobject, GL_GEOMETRY_SHADER_ARB, "geometry", geometrystrings_count, geometrystrings_list))
879 if (fragmentstrings_count && !GL_Backend_CompileShader(programobject, GL_FRAGMENT_SHADER_ARB, "fragment", fragmentstrings_count, fragmentstrings_list))
882 qglLinkProgramARB(programobject);CHECKGLERROR
883 qglGetObjectParameterivARB(programobject, GL_OBJECT_LINK_STATUS_ARB, &programlinked);CHECKGLERROR
884 qglGetInfoLogARB(programobject, sizeof(linklog), NULL, linklog);CHECKGLERROR
887 Con_DPrintf("program link log:\n%s\n", linklog);
888 // software vertex shader is ok but software fragment shader is WAY
889 // too slow, fail program if so.
890 // NOTE: this string might be ATI specific, but that's ok because the
891 // ATI R300 chip (Radeon 9500-9800/X300) is the most likely to use a
892 // software fragment shader due to low instruction and dependent
894 if (strstr(linklog, "fragment shader will run in software"))
895 programlinked = false;
899 return programobject;
901 qglDeleteObjectARB(programobject);CHECKGLERROR
905 void GL_Backend_FreeProgram(unsigned int prog)
908 qglDeleteObjectARB(prog);
912 int gl_backend_rebindtextures;
914 void GL_Backend_RenumberElements(int *out, int count, const int *in, int offset)
919 for (i = 0;i < count;i++)
920 *out++ = *in++ + offset;
923 memcpy(out, in, sizeof(*out) * count);
926 // renders triangles using vertices from the active arrays
927 int paranoidblah = 0;
928 void R_Mesh_Draw(int firstvertex, int numvertices, int numtriangles, const int *elements, int bufferobject, size_t bufferoffset)
930 unsigned int numelements = numtriangles * 3;
931 if (numvertices < 3 || numtriangles < 1)
933 Con_Printf("R_Mesh_Draw(%d, %d, %d, %8p, %i, %p);\n", firstvertex, numvertices, numtriangles, elements, bufferobject, (void *)bufferoffset);
939 r_refdef.stats.meshes++;
940 r_refdef.stats.meshes_elements += numelements;
941 if (gl_paranoid.integer)
943 unsigned int i, j, size;
945 // note: there's no validation done here on buffer objects because it
946 // is somewhat difficult to get at the data, and gl_paranoid can be
947 // used without buffer objects if the need arises
948 // (the data could be gotten using glMapBuffer but it would be very
949 // slow due to uncachable video memory reads)
950 if (!qglIsEnabled(GL_VERTEX_ARRAY))
951 Con_Print("R_Mesh_Draw: vertex array not enabled\n");
953 if (gl_state.pointer_vertex)
954 for (j = 0, size = numvertices * 3, p = (int *)((float *)gl_state.pointer_vertex + firstvertex * 3);j < size;j++, p++)
956 if (gl_state.pointer_color_enabled)
958 if (!qglIsEnabled(GL_COLOR_ARRAY))
959 Con_Print("R_Mesh_Draw: color array set but not enabled\n");
961 if (gl_state.pointer_color && gl_state.pointer_color_enabled)
962 for (j = 0, size = numvertices * 4, p = (int *)((float *)gl_state.pointer_color + firstvertex * 4);j < size;j++, p++)
965 for (i = 0;i < backendarrayunits;i++)
967 if (gl_state.units[i].arrayenabled)
969 GL_ClientActiveTexture(i);
970 if (!qglIsEnabled(GL_TEXTURE_COORD_ARRAY))
971 Con_Print("R_Mesh_Draw: texcoord array set but not enabled\n");
973 if (gl_state.units[i].pointer_texcoord && gl_state.units[i].arrayenabled)
974 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++)
978 for (i = 0;i < (unsigned int) numtriangles * 3;i++)
980 if (elements[i] < firstvertex || elements[i] >= firstvertex + numvertices)
982 Con_Printf("R_Mesh_Draw: invalid vertex index %i (outside range %i - %i) in elements list\n", elements[i], firstvertex, firstvertex + numvertices);
988 if (r_render.integer)
991 if (gl_mesh_testmanualfeeding.integer)
995 qglBegin(GL_TRIANGLES);
996 for (i = 0;i < (unsigned int) numtriangles * 3;i++)
998 for (j = 0;j < backendarrayunits;j++)
1000 if (gl_state.units[j].pointer_texcoord && gl_state.units[j].arrayenabled)
1002 if (backendarrayunits > 1)
1004 if (gl_state.units[j].arraycomponents == 4)
1006 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 4;
1007 qglMultiTexCoord4f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2], p[3]);
1009 else if (gl_state.units[j].arraycomponents == 3)
1011 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 3;
1012 qglMultiTexCoord3f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2]);
1014 else if (gl_state.units[j].arraycomponents == 2)
1016 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 2;
1017 qglMultiTexCoord2f(GL_TEXTURE0_ARB + j, p[0], p[1]);
1021 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 1;
1022 qglMultiTexCoord1f(GL_TEXTURE0_ARB + j, p[0]);
1027 if (gl_state.units[j].arraycomponents == 4)
1029 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 4;
1030 qglTexCoord4f(p[0], p[1], p[2], p[3]);
1032 else if (gl_state.units[j].arraycomponents == 3)
1034 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 3;
1035 qglTexCoord3f(p[0], p[1], p[2]);
1037 else if (gl_state.units[j].arraycomponents == 2)
1039 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 2;
1040 qglTexCoord2f(p[0], p[1]);
1044 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 1;
1045 qglTexCoord1f(p[0]);
1050 if (gl_state.pointer_color && gl_state.pointer_color_enabled)
1052 p = ((const GLfloat *)(gl_state.pointer_color)) + elements[i] * 4;
1053 qglColor4f(p[0], p[1], p[2], p[3]);
1055 p = ((const GLfloat *)(gl_state.pointer_vertex)) + elements[i] * 3;
1056 qglVertex3f(p[0], p[1], p[2]);
1061 else if (gl_mesh_testarrayelement.integer)
1064 qglBegin(GL_TRIANGLES);
1065 for (i = 0;i < numtriangles * 3;i++)
1067 qglArrayElement(elements[i]);
1072 else if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
1074 GL_BindEBO(bufferobject);
1075 qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices, numelements, GL_UNSIGNED_INT, bufferobject ? (void *)bufferoffset : elements);
1080 GL_BindEBO(bufferobject);
1081 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, bufferobject ? (void *)bufferoffset : elements);
1087 // restores backend state, used when done with 3D rendering
1088 void R_Mesh_Finish(void)
1093 GL_LockArrays(0, 0);
1096 for (i = 0;i < backendimageunits;i++)
1098 GL_ActiveTexture(i);
1099 qglBindTexture(GL_TEXTURE_1D, 0);CHECKGLERROR
1100 qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
1103 qglBindTexture(GL_TEXTURE_3D, 0);CHECKGLERROR
1105 if (gl_texturecubemap)
1107 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
1110 for (i = 0;i < backendarrayunits;i++)
1112 GL_ActiveTexture(backendarrayunits - 1 - i);
1113 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1115 for (i = 0;i < backendunits;i++)
1117 GL_ActiveTexture(backendunits - 1 - i);
1118 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1119 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1122 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1124 if (gl_texturecubemap)
1126 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1128 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
1129 if (gl_combine.integer)
1131 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
1132 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
1135 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1136 qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
1138 qglDisable(GL_BLEND);CHECKGLERROR
1139 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
1140 qglDepthMask(GL_TRUE);CHECKGLERROR
1141 qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);CHECKGLERROR
1144 int R_Mesh_CreateStaticBufferObject(unsigned int target, void *data, size_t size, const char *name)
1146 gl_bufferobjectinfo_t *info;
1147 GLuint bufferobject;
1149 if (!gl_vbo.integer)
1152 qglGenBuffersARB(1, &bufferobject);
1155 case GL_ELEMENT_ARRAY_BUFFER_ARB: GL_BindEBO(bufferobject);break;
1156 case GL_ARRAY_BUFFER_ARB: GL_BindVBO(bufferobject);break;
1157 default: Sys_Error("R_Mesh_CreateStaticBufferObject: unknown target type %i\n", target);return 0;
1159 qglBufferDataARB(target, size, data, GL_STATIC_DRAW_ARB);
1161 info = Mem_ExpandableArray_AllocRecord(&gl_bufferobjectinfoarray);
1162 memset(info, 0, sizeof(*info));
1163 info->target = target;
1164 info->object = bufferobject;
1166 strlcpy(info->name, name, sizeof(info->name));
1168 return (int)bufferobject;
1171 void R_Mesh_DestroyBufferObject(int bufferobject)
1174 gl_bufferobjectinfo_t *info;
1176 qglDeleteBuffersARB(1, (GLuint *)&bufferobject);
1178 endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
1179 for (i = 0;i < endindex;i++)
1181 info = Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
1184 if (info->object == bufferobject)
1186 Mem_ExpandableArray_FreeRecord(&gl_bufferobjectinfoarray, (void *)info);
1192 void GL_Mesh_ListVBOs(qboolean printeach)
1195 size_t ebocount = 0, ebomemory = 0;
1196 size_t vbocount = 0, vbomemory = 0;
1197 gl_bufferobjectinfo_t *info;
1198 endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
1199 for (i = 0;i < endindex;i++)
1201 info = Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
1204 switch(info->target)
1206 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;
1207 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;
1208 default: Con_Printf("gl_vbostats: unknown target type %i\n", info->target);break;
1211 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);
1214 void R_Mesh_Matrix(const matrix4x4_t *matrix)
1216 if (memcmp(matrix, &backend_modelmatrix, sizeof(matrix4x4_t)))
1218 double glmatrix[16];
1219 backend_modelmatrix = *matrix;
1220 Matrix4x4_Concat(&backend_modelviewmatrix, &backend_viewmatrix, matrix);
1221 Matrix4x4_ToArrayDoubleGL(&backend_modelviewmatrix, glmatrix);
1223 qglLoadMatrixd(glmatrix);CHECKGLERROR
1227 void R_Mesh_VertexPointer(const float *vertex3f, int bufferobject, size_t bufferoffset)
1229 if (!gl_vbo.integer)
1231 if (gl_state.pointer_vertex != vertex3f || gl_state.pointer_vertex_buffer != bufferobject || gl_state.pointer_vertex_offset != bufferoffset)
1233 gl_state.pointer_vertex = vertex3f;
1234 gl_state.pointer_vertex_buffer = bufferobject;
1235 gl_state.pointer_vertex_offset = bufferoffset;
1237 GL_BindVBO(bufferobject);
1238 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), bufferobject ? (void *)bufferoffset : vertex3f);CHECKGLERROR
1242 void R_Mesh_ColorPointer(const float *color4f, int bufferobject, size_t bufferoffset)
1244 // note: this can not rely on bufferobject to decide whether a color array
1245 // is supplied, because surfmesh_t shares one vbo for all arrays, which
1246 // means that a valid vbo may be supplied even if there is no color array.
1249 if (!gl_vbo.integer)
1251 // caller wants color array enabled
1252 if (!gl_state.pointer_color_enabled)
1254 gl_state.pointer_color_enabled = true;
1256 qglEnableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1258 if (gl_state.pointer_color != color4f || gl_state.pointer_color_buffer != bufferobject || gl_state.pointer_color_offset != bufferoffset)
1260 gl_state.pointer_color = color4f;
1261 gl_state.pointer_color_buffer = bufferobject;
1262 gl_state.pointer_color_offset = bufferoffset;
1264 GL_BindVBO(bufferobject);
1265 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), bufferobject ? (void *)bufferoffset : color4f);CHECKGLERROR
1270 // caller wants color array disabled
1271 if (gl_state.pointer_color_enabled)
1273 gl_state.pointer_color_enabled = false;
1275 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1276 // when color array is on the glColor gets trashed, set it again
1277 qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);CHECKGLERROR
1282 void R_Mesh_TexCoordPointer(unsigned int unitnum, unsigned int numcomponents, const float *texcoord, int bufferobject, size_t bufferoffset)
1284 gltextureunit_t *unit = gl_state.units + unitnum;
1285 // update array settings
1287 // note: there is no need to check bufferobject here because all cases
1288 // that involve a valid bufferobject also supply a texcoord array
1291 if (!gl_vbo.integer)
1293 // texture array unit is enabled, enable the array
1294 if (!unit->arrayenabled)
1296 unit->arrayenabled = true;
1297 GL_ClientActiveTexture(unitnum);
1298 qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1301 if (unit->pointer_texcoord != texcoord || unit->pointer_texcoord_buffer != bufferobject || unit->pointer_texcoord_offset != bufferoffset || unit->arraycomponents != numcomponents)
1303 unit->pointer_texcoord = texcoord;
1304 unit->pointer_texcoord_buffer = bufferobject;
1305 unit->pointer_texcoord_offset = bufferoffset;
1306 unit->arraycomponents = numcomponents;
1307 GL_ClientActiveTexture(unitnum);
1308 GL_BindVBO(bufferobject);
1309 qglTexCoordPointer(unit->arraycomponents, GL_FLOAT, sizeof(float) * unit->arraycomponents, bufferobject ? (void *)bufferoffset : texcoord);CHECKGLERROR
1314 // texture array unit is disabled, disable the array
1315 if (unit->arrayenabled)
1317 unit->arrayenabled = false;
1318 GL_ClientActiveTexture(unitnum);
1319 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1324 void R_Mesh_TexBindAll(unsigned int unitnum, int tex1d, int tex2d, int tex3d, int texcubemap)
1326 gltextureunit_t *unit = gl_state.units + unitnum;
1327 if (unitnum >= backendimageunits)
1329 // update 1d texture binding
1330 if (unit->t1d != tex1d)
1332 GL_ActiveTexture(unitnum);
1333 if (unitnum < backendunits)
1339 qglEnable(GL_TEXTURE_1D);CHECKGLERROR
1346 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1351 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1353 // update 2d texture binding
1354 if (unit->t2d != tex2d)
1356 GL_ActiveTexture(unitnum);
1357 if (unitnum < backendunits)
1363 qglEnable(GL_TEXTURE_2D);CHECKGLERROR
1370 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1375 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1377 // update 3d texture binding
1378 if (unit->t3d != tex3d)
1380 GL_ActiveTexture(unitnum);
1381 if (unitnum < backendunits)
1387 qglEnable(GL_TEXTURE_3D);CHECKGLERROR
1394 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1399 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1401 // update cubemap texture binding
1402 if (unit->tcubemap != texcubemap)
1404 GL_ActiveTexture(unitnum);
1405 if (unitnum < backendunits)
1409 if (unit->tcubemap == 0)
1411 qglEnable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1418 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1422 unit->tcubemap = texcubemap;
1423 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1427 void R_Mesh_TexBind1D(unsigned int unitnum, int texnum)
1429 gltextureunit_t *unit = gl_state.units + unitnum;
1430 if (unitnum >= backendimageunits)
1432 // update 1d texture binding
1433 if (unit->t1d != texnum)
1435 GL_ActiveTexture(unitnum);
1436 if (unitnum < backendunits)
1442 qglEnable(GL_TEXTURE_1D);CHECKGLERROR
1449 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1454 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1456 // update 2d texture binding
1459 GL_ActiveTexture(unitnum);
1460 if (unitnum < backendunits)
1464 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1468 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1470 // update 3d texture binding
1473 GL_ActiveTexture(unitnum);
1474 if (unitnum < backendunits)
1478 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1482 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1484 // update cubemap texture binding
1487 GL_ActiveTexture(unitnum);
1488 if (unitnum < backendunits)
1492 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1496 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1500 void R_Mesh_TexBind(unsigned int unitnum, int texnum)
1502 gltextureunit_t *unit = gl_state.units + unitnum;
1503 if (unitnum >= backendimageunits)
1505 // update 1d texture binding
1508 GL_ActiveTexture(unitnum);
1509 if (unitnum < backendunits)
1513 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1517 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1519 // update 2d texture binding
1520 if (unit->t2d != texnum)
1522 GL_ActiveTexture(unitnum);
1523 if (unitnum < backendunits)
1529 qglEnable(GL_TEXTURE_2D);CHECKGLERROR
1536 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1541 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1543 // update 3d texture binding
1546 GL_ActiveTexture(unitnum);
1547 if (unitnum < backendunits)
1551 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1555 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1557 // update cubemap texture binding
1558 if (unit->tcubemap != 0)
1560 GL_ActiveTexture(unitnum);
1561 if (unitnum < backendunits)
1565 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1569 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1573 void R_Mesh_TexBind3D(unsigned int unitnum, int texnum)
1575 gltextureunit_t *unit = gl_state.units + unitnum;
1576 if (unitnum >= backendimageunits)
1578 // update 1d texture binding
1581 GL_ActiveTexture(unitnum);
1582 if (unitnum < backendunits)
1586 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1590 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1592 // update 2d texture binding
1595 GL_ActiveTexture(unitnum);
1596 if (unitnum < backendunits)
1600 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1604 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1606 // update 3d texture binding
1607 if (unit->t3d != texnum)
1609 GL_ActiveTexture(unitnum);
1610 if (unitnum < backendunits)
1616 qglEnable(GL_TEXTURE_3D);CHECKGLERROR
1623 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1628 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1630 // update cubemap texture binding
1631 if (unit->tcubemap != 0)
1633 GL_ActiveTexture(unitnum);
1634 if (unitnum < backendunits)
1638 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1642 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1646 void R_Mesh_TexBindCubeMap(unsigned int unitnum, int texnum)
1648 gltextureunit_t *unit = gl_state.units + unitnum;
1649 if (unitnum >= backendimageunits)
1651 // update 1d texture binding
1654 GL_ActiveTexture(unitnum);
1655 if (unitnum < backendunits)
1659 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1663 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1665 // update 2d texture binding
1668 GL_ActiveTexture(unitnum);
1669 if (unitnum < backendunits)
1673 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1677 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1679 // update 3d texture binding
1682 GL_ActiveTexture(unitnum);
1683 if (unitnum < backendunits)
1687 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1691 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1693 // update cubemap texture binding
1694 if (unit->tcubemap != texnum)
1696 GL_ActiveTexture(unitnum);
1697 if (unitnum < backendunits)
1701 if (unit->tcubemap == 0)
1703 qglEnable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1710 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1714 unit->tcubemap = texnum;
1715 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1719 void R_Mesh_TexMatrix(unsigned int unitnum, const matrix4x4_t *matrix)
1721 gltextureunit_t *unit = gl_state.units + unitnum;
1722 if (matrix->m[3][3])
1724 // texmatrix specified, check if it is different
1725 if (!unit->texmatrixenabled || memcmp(&unit->matrix, matrix, sizeof(matrix4x4_t)))
1727 double glmatrix[16];
1728 unit->texmatrixenabled = true;
1729 unit->matrix = *matrix;
1731 Matrix4x4_ToArrayDoubleGL(&unit->matrix, glmatrix);
1732 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1733 GL_ActiveTexture(unitnum);
1734 qglLoadMatrixd(glmatrix);CHECKGLERROR
1735 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
1740 // no texmatrix specified, revert to identity
1741 if (unit->texmatrixenabled)
1743 unit->texmatrixenabled = false;
1745 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1746 GL_ActiveTexture(unitnum);
1747 qglLoadIdentity();CHECKGLERROR
1748 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
1753 void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, int rgbscale, int alphascale)
1755 gltextureunit_t *unit = gl_state.units + unitnum;
1757 if (gl_combine.integer)
1759 // GL_ARB_texture_env_combine
1761 combinergb = GL_MODULATE;
1763 combinealpha = GL_MODULATE;
1768 if (unit->combinergb != combinergb)
1770 unit->combinergb = combinergb;
1771 GL_ActiveTexture(unitnum);
1772 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
1774 if (unit->combinealpha != combinealpha)
1776 unit->combinealpha = combinealpha;
1777 GL_ActiveTexture(unitnum);
1778 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
1780 if (unit->rgbscale != rgbscale)
1782 GL_ActiveTexture(unitnum);
1783 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = rgbscale));CHECKGLERROR
1785 if (unit->alphascale != alphascale)
1787 GL_ActiveTexture(unitnum);
1788 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = alphascale));CHECKGLERROR
1795 combinergb = GL_MODULATE;
1796 if (unit->combinergb != combinergb)
1798 unit->combinergb = combinergb;
1799 GL_ActiveTexture(unitnum);
1800 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR
1805 void R_Mesh_TextureState(const rmeshstate_t *m)
1812 if (gl_backend_rebindtextures)
1814 gl_backend_rebindtextures = false;
1815 GL_SetupTextureState();
1819 for (i = 0;i < backendimageunits;i++)
1820 R_Mesh_TexBindAll(i, m->tex1d[i], m->tex[i], m->tex3d[i], m->texcubemap[i]);
1821 for (i = 0;i < backendarrayunits;i++)
1823 if (m->pointer_texcoord3f[i])
1824 R_Mesh_TexCoordPointer(i, 3, m->pointer_texcoord3f[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
1826 R_Mesh_TexCoordPointer(i, 2, m->pointer_texcoord[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
1828 for (i = 0;i < backendunits;i++)
1830 R_Mesh_TexMatrix(i, &m->texmatrix[i]);
1831 R_Mesh_TexCombine(i, m->texcombinergb[i], m->texcombinealpha[i], m->texrgbscale[i], m->texalphascale[i]);
1836 void R_Mesh_ResetTextureState(void)
1838 unsigned int unitnum;
1843 if (gl_backend_rebindtextures)
1845 gl_backend_rebindtextures = false;
1846 GL_SetupTextureState();
1850 for (unitnum = 0;unitnum < backendimageunits;unitnum++)
1852 gltextureunit_t *unit = gl_state.units + unitnum;
1853 // update 1d texture binding
1856 GL_ActiveTexture(unitnum);
1857 if (unitnum < backendunits)
1859 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1862 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1864 // update 2d texture binding
1867 GL_ActiveTexture(unitnum);
1868 if (unitnum < backendunits)
1870 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1873 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1875 // update 3d texture binding
1878 GL_ActiveTexture(unitnum);
1879 if (unitnum < backendunits)
1881 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1884 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1886 // update cubemap texture binding
1889 GL_ActiveTexture(unitnum);
1890 if (unitnum < backendunits)
1892 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1895 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1898 for (unitnum = 0;unitnum < backendarrayunits;unitnum++)
1900 gltextureunit_t *unit = gl_state.units + unitnum;
1901 // texture array unit is disabled, disable the array
1902 if (unit->arrayenabled)
1904 unit->arrayenabled = false;
1905 GL_ClientActiveTexture(unitnum);
1906 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1909 for (unitnum = 0;unitnum < backendunits;unitnum++)
1911 gltextureunit_t *unit = gl_state.units + unitnum;
1912 // no texmatrix specified, revert to identity
1913 if (unit->texmatrixenabled)
1915 unit->texmatrixenabled = false;
1917 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1918 GL_ActiveTexture(unitnum);
1919 qglLoadIdentity();CHECKGLERROR
1920 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
1922 if (gl_combine.integer)
1924 // GL_ARB_texture_env_combine
1925 if (unit->combinergb != GL_MODULATE)
1927 unit->combinergb = GL_MODULATE;
1928 GL_ActiveTexture(unitnum);
1929 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
1931 if (unit->combinealpha != GL_MODULATE)
1933 unit->combinealpha = GL_MODULATE;
1934 GL_ActiveTexture(unitnum);
1935 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
1937 if (unit->rgbscale != 1)
1939 GL_ActiveTexture(unitnum);
1940 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = 1));CHECKGLERROR
1942 if (unit->alphascale != 1)
1944 GL_ActiveTexture(unitnum);
1945 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = 1));CHECKGLERROR
1951 if (unit->combinergb != GL_MODULATE)
1953 unit->combinergb = GL_MODULATE;
1954 GL_ActiveTexture(unitnum);
1955 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR
1961 void R_Mesh_Draw_ShowTris(int firstvertex, int numvertices, int numtriangles, const int *elements)
1965 for (;numtriangles;numtriangles--, elements += 3)
1967 qglArrayElement(elements[0]);qglArrayElement(elements[1]);
1968 qglArrayElement(elements[1]);qglArrayElement(elements[2]);
1969 qglArrayElement(elements[2]);qglArrayElement(elements[0]);