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_mesh_prefer_short_elements = {0, "gl_mesh_prefer_short_elements", "1", "use GL_UNSIGNED_SHORT element arrays instead of GL_UNSIGNED_INT"};
9 cvar_t gl_paranoid = {0, "gl_paranoid", "0", "enables OpenGL error checking and other tests"};
10 cvar_t gl_printcheckerror = {0, "gl_printcheckerror", "0", "prints all OpenGL error checks, useful to identify location of driver crashes"};
12 cvar_t r_render = {0, "r_render", "1", "enables rendering calls (you want this on!)"};
13 cvar_t r_waterwarp = {CVAR_SAVE, "r_waterwarp", "1", "warp view while underwater"};
14 cvar_t gl_polyblend = {CVAR_SAVE, "gl_polyblend", "1", "tints view while underwater, hurt, etc"};
15 cvar_t gl_dither = {CVAR_SAVE, "gl_dither", "1", "enables OpenGL dithering (16bit looks bad with this off)"};
16 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"};
17 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"};
18 cvar_t gl_vbo = {CVAR_SAVE, "gl_vbo", "1", "make use of GL_ARB_vertex_buffer_object extension to store static geometry in video memory for faster rendering"};
20 cvar_t v_flipped = {0, "v_flipped", "0", "mirror the screen (poor man's left handed mode)"};
21 qboolean v_flipped_state = false;
23 int gl_maxdrawrangeelementsvertices;
24 int gl_maxdrawrangeelementsindices;
29 void GL_PrintError(int errornumber, char *filename, int linenumber)
33 #ifdef GL_INVALID_ENUM
35 Con_Printf("GL_INVALID_ENUM at %s:%i\n", filename, linenumber);
38 #ifdef GL_INVALID_VALUE
39 case GL_INVALID_VALUE:
40 Con_Printf("GL_INVALID_VALUE at %s:%i\n", filename, linenumber);
43 #ifdef GL_INVALID_OPERATION
44 case GL_INVALID_OPERATION:
45 Con_Printf("GL_INVALID_OPERATION at %s:%i\n", filename, linenumber);
48 #ifdef GL_STACK_OVERFLOW
49 case GL_STACK_OVERFLOW:
50 Con_Printf("GL_STACK_OVERFLOW at %s:%i\n", filename, linenumber);
53 #ifdef GL_STACK_UNDERFLOW
54 case GL_STACK_UNDERFLOW:
55 Con_Printf("GL_STACK_UNDERFLOW at %s:%i\n", filename, linenumber);
58 #ifdef GL_OUT_OF_MEMORY
59 case GL_OUT_OF_MEMORY:
60 Con_Printf("GL_OUT_OF_MEMORY at %s:%i\n", filename, linenumber);
63 #ifdef GL_TABLE_TOO_LARGE
64 case GL_TABLE_TOO_LARGE:
65 Con_Printf("GL_TABLE_TOO_LARGE at %s:%i\n", filename, linenumber);
69 Con_Printf("GL UNKNOWN (%i) at %s:%i\n", errornumber, filename, linenumber);
75 #define BACKENDACTIVECHECK if (!backendactive) Sys_Error("GL backend function called when backend is not active");
77 void SCR_ScreenShot_f (void);
79 static matrix4x4_t backend_viewmatrix;
80 static matrix4x4_t backend_modelmatrix;
81 static matrix4x4_t backend_modelviewmatrix;
82 static matrix4x4_t backend_projectmatrix;
84 static unsigned int backendunits, backendimageunits, backendarrayunits, backendactive;
87 note: here's strip order for a terrain row:
94 A0B, 01B, B1C, 12C, C2D, 23D, D3E, 34E
96 *elements++ = i + row;
98 *elements++ = i + row + 1;
101 *elements++ = i + row + 1;
104 for (y = 0;y < rows - 1;y++)
106 for (x = 0;x < columns - 1;x++)
109 *elements++ = i + columns;
111 *elements++ = i + columns + 1;
114 *elements++ = i + columns + 1;
125 for (y = 0;y < rows - 1;y++)
127 for (x = 0;x < columns - 1;x++)
131 *elements++ = i + columns;
132 *elements++ = i + columns + 1;
133 *elements++ = i + columns;
134 *elements++ = i + columns + 1;
140 unsigned short polygonelements[(POLYGONELEMENTS_MAXPOINTS-2)*3];
141 unsigned short quadelements[QUADELEMENTS_MAXQUADS*6];
143 void GL_Backend_AllocArrays(void)
147 void GL_Backend_FreeArrays(void)
151 void GL_VBOStats_f(void)
153 GL_Mesh_ListVBOs(true);
156 typedef struct gl_bufferobjectinfo_s
161 char name[MAX_QPATH];
163 gl_bufferobjectinfo_t;
165 memexpandablearray_t gl_bufferobjectinfoarray;
167 static void gl_backend_start(void)
171 if (qglDrawRangeElements != NULL)
174 qglGetIntegerv(GL_MAX_ELEMENTS_VERTICES, &gl_maxdrawrangeelementsvertices);
176 qglGetIntegerv(GL_MAX_ELEMENTS_INDICES, &gl_maxdrawrangeelementsindices);
178 Con_DPrintf("GL_MAX_ELEMENTS_VERTICES = %i\nGL_MAX_ELEMENTS_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_DPrintf("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);
196 Con_DPrintf("GL_MAX_TEXTUREUNITS = %i\n", backendunits);
198 GL_Backend_AllocArrays();
200 Mem_ExpandableArray_NewArray(&gl_bufferobjectinfoarray, r_main_mempool, sizeof(gl_bufferobjectinfo_t), 128);
202 Con_DPrintf("OpenGL backend started.\n");
206 backendactive = true;
209 static void gl_backend_shutdown(void)
212 backendimageunits = 0;
213 backendarrayunits = 0;
214 backendactive = false;
216 Con_DPrint("OpenGL Backend shutting down\n");
218 Mem_ExpandableArray_FreeArray(&gl_bufferobjectinfoarray);
220 GL_Backend_FreeArrays();
223 static void gl_backend_newmap(void)
227 void gl_backend_init(void)
231 for (i = 0;i < POLYGONELEMENTS_MAXPOINTS - 2;i++)
233 polygonelements[i * 3 + 0] = 0;
234 polygonelements[i * 3 + 1] = i + 1;
235 polygonelements[i * 3 + 2] = i + 2;
237 // elements for rendering a series of quads as triangles
238 for (i = 0;i < QUADELEMENTS_MAXQUADS;i++)
240 quadelements[i * 6 + 0] = i * 4;
241 quadelements[i * 6 + 1] = i * 4 + 1;
242 quadelements[i * 6 + 2] = i * 4 + 2;
243 quadelements[i * 6 + 3] = i * 4;
244 quadelements[i * 6 + 4] = i * 4 + 2;
245 quadelements[i * 6 + 5] = i * 4 + 3;
248 Cvar_RegisterVariable(&r_render);
249 Cvar_RegisterVariable(&r_waterwarp);
250 Cvar_RegisterVariable(&gl_polyblend);
251 Cvar_RegisterVariable(&v_flipped);
252 Cvar_RegisterVariable(&gl_dither);
253 Cvar_RegisterVariable(&gl_lockarrays);
254 Cvar_RegisterVariable(&gl_lockarrays_minimumvertices);
255 Cvar_RegisterVariable(&gl_vbo);
256 Cvar_RegisterVariable(&gl_paranoid);
257 Cvar_RegisterVariable(&gl_printcheckerror);
259 Cvar_SetValue("r_render", 0);
262 Cvar_RegisterVariable(&gl_mesh_drawrangeelements);
263 Cvar_RegisterVariable(&gl_mesh_testarrayelement);
264 Cvar_RegisterVariable(&gl_mesh_testmanualfeeding);
265 Cvar_RegisterVariable(&gl_mesh_prefer_short_elements);
267 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");
269 R_RegisterModule("GL_Backend", gl_backend_start, gl_backend_shutdown, gl_backend_newmap);
272 void GL_SetMirrorState(qboolean state);
274 void GL_SetupView_Orientation_Identity (void)
276 backend_viewmatrix = identitymatrix;
277 GL_SetMirrorState(false);
278 memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
281 void GL_SetupView_Orientation_FromEntity(const matrix4x4_t *matrix)
283 matrix4x4_t tempmatrix, basematrix;
284 Matrix4x4_Invert_Full(&tempmatrix, matrix);
285 Matrix4x4_CreateRotate(&basematrix, -90, 1, 0, 0);
286 Matrix4x4_ConcatRotate(&basematrix, 90, 0, 0, 1);
287 Matrix4x4_Concat(&backend_viewmatrix, &basematrix, &tempmatrix);
289 GL_SetMirrorState(v_flipped.integer);
292 Matrix4x4_Transpose(&basematrix, &backend_viewmatrix);
293 Matrix4x4_ConcatScale3(&basematrix, -1, 1, 1);
294 Matrix4x4_Transpose(&backend_viewmatrix, &basematrix);
297 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[2], 1, 0, 0);
298 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[0], 0, 1, 0);
299 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[1], 0, 0, 1);
300 //Matrix4x4_ConcatTranslate(&backend_viewmatrix, -origin[0], -origin[1], -origin[2]);
302 // force an update of the model matrix by copying it off, resetting it, and then calling the R_Mesh_Matrix function with it
303 tempmatrix = backend_modelmatrix;
304 memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
305 R_Mesh_Matrix(&tempmatrix);
308 static void GL_BuildFrustum(double m[16], double left, double right, double bottom, double top, double nearVal, double farVal)
310 m[0] = 2 * nearVal / (right - left);
316 m[5] = 2 * nearVal / (top - bottom);
320 m[8] = (right + left) / (right - left);
321 m[9] = (top + bottom) / (top - bottom);
322 m[10] = - (farVal + nearVal) / (farVal - nearVal);
327 m[14] = - 2 * farVal * nearVal / (farVal - nearVal);
331 void GL_SetupView_Mode_Perspective (double frustumx, double frustumy, double zNear, double zFar)
337 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
340 // avoid glGetDoublev whenever possible, it may stall the render pipeline
341 // in the tested cases (nvidia) no measurable fps difference, but it sure
342 // makes a difference over a network line with GLX
343 GL_BuildFrustum(m, -frustumx * zNear, frustumx * zNear, -frustumy * zNear, frustumy * zNear, zNear, zFar);
344 qglLoadMatrixd(m);CHECKGLERROR
346 qglLoadIdentity();CHECKGLERROR
347 qglFrustum(-frustumx * zNear, frustumx * zNear, -frustumy * zNear, frustumy * zNear, zNear, zFar);CHECKGLERROR
348 qglGetDoublev(GL_PROJECTION_MATRIX, m);CHECKGLERROR
350 Matrix4x4_FromArrayDoubleGL(&backend_projectmatrix, m);
351 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
352 GL_SetupView_Orientation_Identity();
356 void GL_SetupView_Mode_PerspectiveInfiniteFarClip (double frustumx, double frustumy, double zNear)
362 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
363 qglLoadIdentity();CHECKGLERROR
365 nudge = 1.0 - 1.0 / (1<<23);
366 m[ 0] = 1.0 / frustumx;
371 m[ 5] = 1.0 / frustumy;
380 m[14] = -2 * zNear * nudge;
382 qglLoadMatrixd(m);CHECKGLERROR
383 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
384 GL_SetupView_Orientation_Identity();
386 Matrix4x4_FromArrayDoubleGL(&backend_projectmatrix, m);
389 static void GL_BuildOrtho(double m[16], double left, double right, double bottom, double top, double zNear, double zFar)
391 m[0] = 2/(right - left);
397 m[5] = 2/(top - bottom);
403 m[10] = -2/(zFar - zNear);
406 m[12] = - (right + left)/(right - left);
407 m[13] = - (top + bottom)/(top - bottom);
408 m[14] = - (zFar + zNear)/(zFar - zNear);
412 void GL_SetupView_Mode_Ortho (double x1, double y1, double x2, double y2, double zNear, double zFar)
418 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
420 // avoid glGetDoublev whenever possible, it may stall the render pipeline
421 // in the tested cases (nvidia) no measurable fps difference, but it sure
422 // makes a difference over a network line with GLX
423 GL_BuildOrtho(m, x1, x2, y2, y1, zNear, zFar);
424 qglLoadMatrixd(m);CHECKGLERROR
426 qglLoadIdentity();CHECKGLERROR
427 qglOrtho(x1, x2, y2, y1, zNear, zFar);CHECKGLERROR
428 qglGetDoublev(GL_PROJECTION_MATRIX, m);CHECKGLERROR
430 Matrix4x4_FromArrayDoubleGL(&backend_projectmatrix, m);
431 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
432 GL_SetupView_Orientation_Identity();
436 void GL_SetupView_ApplyCustomNearClipPlane(double normalx, double normaly, double normalz, double dist)
441 float clipPlane[4], v3[3], v4[3];
444 // This is Olique Depth Projection from http://www.terathon.com/code/oblique.php
445 // modified to fit in this codebase.
447 VectorSet(normal, normalx, normaly, normalz);
448 Matrix4x4_Transform3x3(&backend_viewmatrix, normal, clipPlane);
449 VectorScale(normal, dist, v3);
450 Matrix4x4_Transform(&backend_viewmatrix, v3, v4);
451 // FIXME: LordHavoc: I think this can be done more efficiently somehow but I can't remember the technique
452 clipPlane[3] = -DotProduct(v4, clipPlane);
456 // testing code for comparing results
458 VectorCopy4(clipPlane, clipPlane2);
459 R_Mesh_Matrix(&identitymatrix);
460 VectorSet(q, normal[0], normal[1], normal[2], -dist);
461 qglClipPlane(GL_CLIP_PLANE0, q);
462 qglGetClipPlane(GL_CLIP_PLANE0, q);
463 VectorCopy4(q, clipPlane);
467 // Calculate the clip-space corner point opposite the clipping plane
468 // as (sgn(clipPlane.x), sgn(clipPlane.y), 1, 1) and
469 // transform it into camera space by multiplying it
470 // by the inverse of the projection matrix
471 Matrix4x4_ToArrayDoubleGL(&backend_projectmatrix, matrix);
473 q[0] = ((clipPlane[0] < 0.0f ? -1.0f : clipPlane[0] > 0.0f ? 1.0f : 0.0f) + matrix[8]) / matrix[0];
474 q[1] = ((clipPlane[1] < 0.0f ? -1.0f : clipPlane[1] > 0.0f ? 1.0f : 0.0f) + matrix[9]) / matrix[5];
476 q[3] = (1.0f + matrix[10]) / matrix[14];
478 // Calculate the scaled plane vector
479 d = 2.0f / DotProduct4(clipPlane, q);
481 // Replace the third row of the projection matrix
482 matrix[2] = clipPlane[0] * d;
483 matrix[6] = clipPlane[1] * d;
484 matrix[10] = clipPlane[2] * d + 1.0f;
485 matrix[14] = clipPlane[3] * d;
487 // Load it back into OpenGL
488 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
489 qglLoadMatrixd(matrix);CHECKGLERROR
490 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
492 Matrix4x4_FromArrayDoubleGL(&backend_projectmatrix, matrix);
495 typedef struct gltextureunit_s
497 const void *pointer_texcoord;
498 size_t pointer_texcoord_offset;
499 int pointer_texcoord_buffer;
500 int t1d, t2d, t3d, tcubemap;
502 unsigned int arraycomponents;
503 int rgbscale, alphascale;
504 int combinergb, combinealpha;
505 // FIXME: add more combine stuff
506 // texmatrixenabled exists only to avoid unnecessary texmatrix compares
507 int texmatrixenabled;
512 static struct gl_state_s
520 int colormask; // stored as bottom 4 bits: r g b a (3 2 1 0 order)
523 float polygonoffset[2];
527 unsigned int clientunit;
528 gltextureunit_t units[MAX_TEXTUREUNITS];
532 int vertexbufferobject;
533 int elementbufferobject;
534 qboolean pointer_color_enabled;
535 const void *pointer_vertex;
536 const void *pointer_color;
537 size_t pointer_vertex_offset;
538 size_t pointer_color_offset;
539 int pointer_vertex_buffer;
540 int pointer_color_buffer;
544 static void GL_BindVBO(int bufferobject)
546 if (gl_state.vertexbufferobject != bufferobject)
548 gl_state.vertexbufferobject = bufferobject;
550 qglBindBufferARB(GL_ARRAY_BUFFER_ARB, bufferobject);
555 static void GL_BindEBO(int bufferobject)
557 if (gl_state.elementbufferobject != bufferobject)
559 gl_state.elementbufferobject = bufferobject;
561 qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, bufferobject);
566 void GL_SetupTextureState(void)
569 gltextureunit_t *unit;
571 gl_state.unit = MAX_TEXTUREUNITS;
572 gl_state.clientunit = MAX_TEXTUREUNITS;
573 for (i = 0;i < MAX_TEXTUREUNITS;i++)
575 unit = gl_state.units + i;
580 unit->arrayenabled = false;
581 unit->arraycomponents = 0;
582 unit->pointer_texcoord = NULL;
583 unit->pointer_texcoord_buffer = 0;
584 unit->pointer_texcoord_offset = 0;
586 unit->alphascale = 1;
587 unit->combinergb = GL_MODULATE;
588 unit->combinealpha = GL_MODULATE;
589 unit->texmatrixenabled = false;
590 unit->matrix = identitymatrix;
593 for (i = 0;i < backendimageunits;i++)
596 qglBindTexture(GL_TEXTURE_1D, 0);CHECKGLERROR
597 qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
600 qglBindTexture(GL_TEXTURE_3D, 0);CHECKGLERROR
602 if (gl_texturecubemap)
604 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
608 for (i = 0;i < backendarrayunits;i++)
610 GL_ClientActiveTexture(i);
612 qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), NULL);CHECKGLERROR
613 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
616 for (i = 0;i < backendunits;i++)
619 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
620 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
623 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
625 if (gl_texturecubemap)
627 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
629 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
630 qglLoadIdentity();CHECKGLERROR
631 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
632 if (gl_combine.integer)
634 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);CHECKGLERROR
635 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);CHECKGLERROR
636 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);CHECKGLERROR
637 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
638 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_TEXTURE);CHECKGLERROR // for GL_INTERPOLATE_ARB mode
639 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
640 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
641 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, GL_SRC_ALPHA);CHECKGLERROR
642 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_MODULATE);CHECKGLERROR
643 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);CHECKGLERROR
644 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
645 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_ARB, GL_CONSTANT_ARB);CHECKGLERROR
646 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
647 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
648 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
649 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
650 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
654 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
661 void GL_Backend_ResetState(void)
663 memset(&gl_state, 0, sizeof(gl_state));
664 gl_state.depthtest = true;
665 gl_state.alphatest = false;
666 gl_state.blendfunc1 = GL_ONE;
667 gl_state.blendfunc2 = GL_ZERO;
668 gl_state.blend = false;
669 gl_state.depthmask = GL_TRUE;
670 gl_state.colormask = 15;
671 gl_state.color4f[0] = gl_state.color4f[1] = gl_state.color4f[2] = gl_state.color4f[3] = 1;
672 gl_state.lockrange_first = 0;
673 gl_state.lockrange_count = 0;
674 gl_state.cullface = v_flipped_state ? GL_BACK : GL_FRONT; // quake is backwards, this culls back faces
675 gl_state.cullfaceenable = true;
676 gl_state.polygonoffset[0] = 0;
677 gl_state.polygonoffset[1] = 0;
681 qglColorMask(1, 1, 1, 1);
682 qglAlphaFunc(GL_GEQUAL, 0.5);CHECKGLERROR
683 qglDisable(GL_ALPHA_TEST);CHECKGLERROR
684 qglBlendFunc(gl_state.blendfunc1, gl_state.blendfunc2);CHECKGLERROR
685 qglDisable(GL_BLEND);CHECKGLERROR
686 qglCullFace(gl_state.cullface);CHECKGLERROR
687 qglEnable(GL_CULL_FACE);CHECKGLERROR
688 qglDepthFunc(GL_LEQUAL);CHECKGLERROR
689 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
690 qglDepthMask(gl_state.depthmask);CHECKGLERROR
691 qglPolygonOffset(gl_state.polygonoffset[0], gl_state.polygonoffset[1]);
693 if (gl_support_arb_vertex_buffer_object)
695 qglBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
696 qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
699 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), NULL);CHECKGLERROR
700 qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
702 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), NULL);CHECKGLERROR
703 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
705 GL_Color(0, 0, 0, 0);
706 GL_Color(1, 1, 1, 1);
708 GL_SetupTextureState();
711 void GL_ActiveTexture(unsigned int num)
713 if (gl_state.unit != num)
716 if (qglActiveTexture)
719 qglActiveTexture(GL_TEXTURE0_ARB + gl_state.unit);
725 void GL_ClientActiveTexture(unsigned int num)
727 if (gl_state.clientunit != num)
729 gl_state.clientunit = num;
730 if (qglActiveTexture)
733 qglClientActiveTexture(GL_TEXTURE0_ARB + gl_state.clientunit);
739 void GL_BlendFunc(int blendfunc1, int blendfunc2)
741 if (gl_state.blendfunc1 != blendfunc1 || gl_state.blendfunc2 != blendfunc2)
744 qglBlendFunc(gl_state.blendfunc1 = blendfunc1, gl_state.blendfunc2 = blendfunc2);CHECKGLERROR
745 if (gl_state.blendfunc2 == GL_ZERO)
747 if (gl_state.blendfunc1 == GL_ONE)
752 qglDisable(GL_BLEND);CHECKGLERROR
760 qglEnable(GL_BLEND);CHECKGLERROR
769 qglEnable(GL_BLEND);CHECKGLERROR
775 void GL_DepthMask(int state)
777 if (gl_state.depthmask != state)
780 qglDepthMask(gl_state.depthmask = state);CHECKGLERROR
784 void GL_DepthTest(int state)
786 if (gl_state.depthtest != state)
788 gl_state.depthtest = state;
790 if (gl_state.depthtest)
792 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
796 qglDisable(GL_DEPTH_TEST);CHECKGLERROR
801 void GL_DepthRange(float nearfrac, float farfrac)
803 if (gl_state.depthrange[0] != nearfrac || gl_state.depthrange[1] != farfrac)
805 gl_state.depthrange[0] = nearfrac;
806 gl_state.depthrange[1] = farfrac;
807 qglDepthRange(nearfrac, farfrac);
811 void GL_PolygonOffset(float planeoffset, float depthoffset)
813 if (gl_state.polygonoffset[0] != planeoffset || gl_state.polygonoffset[1] != depthoffset)
815 gl_state.polygonoffset[0] = planeoffset;
816 gl_state.polygonoffset[1] = depthoffset;
817 qglPolygonOffset(planeoffset, depthoffset);
821 void GL_SetMirrorState(qboolean state)
823 if(!state != !v_flipped_state)
825 // change cull face mode!
826 if(gl_state.cullface == GL_BACK)
827 qglCullFace((gl_state.cullface = GL_FRONT));
828 else if(gl_state.cullface == GL_FRONT)
829 qglCullFace((gl_state.cullface = GL_BACK));
831 v_flipped_state = state;
834 void GL_CullFace(int state)
840 if(state == GL_FRONT)
842 else if(state == GL_BACK)
846 if (state != GL_NONE)
848 if (!gl_state.cullfaceenable)
850 gl_state.cullfaceenable = true;
851 qglEnable(GL_CULL_FACE);CHECKGLERROR
853 if (gl_state.cullface != state)
855 gl_state.cullface = state;
856 qglCullFace(gl_state.cullface);CHECKGLERROR
861 if (gl_state.cullfaceenable)
863 gl_state.cullfaceenable = false;
864 qglDisable(GL_CULL_FACE);CHECKGLERROR
869 void GL_AlphaTest(int state)
871 if (gl_state.alphatest != state)
873 gl_state.alphatest = state;
875 if (gl_state.alphatest)
877 qglEnable(GL_ALPHA_TEST);CHECKGLERROR
881 qglDisable(GL_ALPHA_TEST);CHECKGLERROR
886 void GL_ColorMask(int r, int g, int b, int a)
888 int state = r*8 + g*4 + b*2 + a*1;
889 if (gl_state.colormask != state)
891 gl_state.colormask = state;
893 qglColorMask((GLboolean)r, (GLboolean)g, (GLboolean)b, (GLboolean)a);CHECKGLERROR
897 void GL_Color(float cr, float cg, float cb, float ca)
899 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)
901 gl_state.color4f[0] = cr;
902 gl_state.color4f[1] = cg;
903 gl_state.color4f[2] = cb;
904 gl_state.color4f[3] = ca;
906 qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);
911 void GL_LockArrays(int first, int count)
913 if (count < gl_lockarrays_minimumvertices.integer)
918 if (gl_state.lockrange_count != count || gl_state.lockrange_first != first)
920 if (gl_state.lockrange_count)
922 gl_state.lockrange_count = 0;
924 qglUnlockArraysEXT();
927 if (count && gl_supportslockarrays && gl_lockarrays.integer && r_render.integer)
929 gl_state.lockrange_first = first;
930 gl_state.lockrange_count = count;
932 qglLockArraysEXT(first, count);
938 void GL_Scissor (int x, int y, int width, int height)
941 qglScissor(x, vid.height - (y + height),width,height);
945 void GL_ScissorTest(int state)
947 if(gl_state.scissortest == state)
951 if((gl_state.scissortest = state))
952 qglEnable(GL_SCISSOR_TEST);
954 qglDisable(GL_SCISSOR_TEST);
958 void GL_Clear(int mask)
961 qglClear(mask);CHECKGLERROR
964 void GL_TransformToScreen(const vec4_t in, vec4_t out)
968 Matrix4x4_Transform4 (&backend_viewmatrix, in, temp);
969 Matrix4x4_Transform4 (&backend_projectmatrix, temp, out);
971 out[0] = r_refdef.view.x + (out[0] * iw + 1.0f) * r_refdef.view.width * 0.5f;
972 out[1] = r_refdef.view.y + r_refdef.view.height - (out[1] * iw + 1.0f) * r_refdef.view.height * 0.5f;
973 out[2] = r_refdef.view.z + (out[2] * iw + 1.0f) * r_refdef.view.depth * 0.5f;
976 // called at beginning of frame
977 void R_Mesh_Start(void)
981 if (gl_printcheckerror.integer && !gl_paranoid.integer)
983 Con_Printf("WARNING: gl_printcheckerror is on but gl_paranoid is off, turning it on...\n");
984 Cvar_SetValueQuick(&gl_paranoid, 1);
986 GL_Backend_ResetState();
989 qboolean GL_Backend_CompileShader(int programobject, GLenum shadertypeenum, const char *shadertype, int numstrings, const char **strings)
993 char compilelog[MAX_INPUTLINE];
994 shaderobject = qglCreateShaderObjectARB(shadertypeenum);CHECKGLERROR
997 qglShaderSourceARB(shaderobject, numstrings, strings, NULL);CHECKGLERROR
998 qglCompileShaderARB(shaderobject);CHECKGLERROR
999 qglGetObjectParameterivARB(shaderobject, GL_OBJECT_COMPILE_STATUS_ARB, &shadercompiled);CHECKGLERROR
1000 qglGetInfoLogARB(shaderobject, sizeof(compilelog), NULL, compilelog);CHECKGLERROR
1001 if (compilelog[0] && developer.integer > 0)
1003 int i, j, pretextlines = 0;
1004 for (i = 0;i < numstrings - 1;i++)
1005 for (j = 0;strings[i][j];j++)
1006 if (strings[i][j] == '\n')
1008 Con_DPrintf("%s shader compile log:\n%s\n(line offset for any above warnings/errors: %i)\n", shadertype, compilelog, pretextlines);
1010 if (!shadercompiled)
1012 qglDeleteObjectARB(shaderobject);CHECKGLERROR
1015 qglAttachObjectARB(programobject, shaderobject);CHECKGLERROR
1016 qglDeleteObjectARB(shaderobject);CHECKGLERROR
1020 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)
1022 GLint programlinked;
1023 GLuint programobject = 0;
1024 char linklog[MAX_INPUTLINE];
1027 programobject = qglCreateProgramObjectARB();CHECKGLERROR
1031 if (vertexstrings_count && !GL_Backend_CompileShader(programobject, GL_VERTEX_SHADER_ARB, "vertex", vertexstrings_count, vertexstrings_list))
1034 #ifdef GL_GEOMETRY_SHADER_ARB
1035 if (geometrystrings_count && !GL_Backend_CompileShader(programobject, GL_GEOMETRY_SHADER_ARB, "geometry", geometrystrings_count, geometrystrings_list))
1039 if (fragmentstrings_count && !GL_Backend_CompileShader(programobject, GL_FRAGMENT_SHADER_ARB, "fragment", fragmentstrings_count, fragmentstrings_list))
1042 qglLinkProgramARB(programobject);CHECKGLERROR
1043 qglGetObjectParameterivARB(programobject, GL_OBJECT_LINK_STATUS_ARB, &programlinked);CHECKGLERROR
1044 qglGetInfoLogARB(programobject, sizeof(linklog), NULL, linklog);CHECKGLERROR
1047 Con_DPrintf("program link log:\n%s\n", linklog);
1048 // software vertex shader is ok but software fragment shader is WAY
1049 // too slow, fail program if so.
1050 // NOTE: this string might be ATI specific, but that's ok because the
1051 // ATI R300 chip (Radeon 9500-9800/X300) is the most likely to use a
1052 // software fragment shader due to low instruction and dependent
1054 if (strstr(linklog, "fragment shader will run in software"))
1055 programlinked = false;
1059 return programobject;
1061 qglDeleteObjectARB(programobject);CHECKGLERROR
1065 void GL_Backend_FreeProgram(unsigned int prog)
1068 qglDeleteObjectARB(prog);
1072 int gl_backend_rebindtextures;
1074 void GL_Backend_RenumberElements(int *out, int count, const int *in, int offset)
1079 for (i = 0;i < count;i++)
1080 *out++ = *in++ + offset;
1083 memcpy(out, in, sizeof(*out) * count);
1086 // renders triangles using vertices from the active arrays
1087 int paranoidblah = 0;
1088 void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int bufferobject3i, int bufferobject3s)
1090 unsigned int numelements = numtriangles * 3;
1091 if (numvertices < 3 || numtriangles < 1)
1093 Con_Printf("R_Mesh_Draw(%d, %d, %d, %d, %8p, %8p, %i, %i);\n", firstvertex, numvertices, firsttriangle, numtriangles, element3i, element3s, bufferobject3i, bufferobject3s);
1096 if (!gl_mesh_prefer_short_elements.integer)
1104 element3i += firsttriangle * 3;
1106 element3s += firsttriangle * 3;
1107 switch (gl_vbo.integer)
1112 bufferobject3i = bufferobject3s = 0;
1118 bufferobject3i = bufferobject3s = 0;
1122 r_refdef.stats.meshes++;
1123 r_refdef.stats.meshes_elements += numelements;
1124 if (gl_paranoid.integer)
1126 unsigned int i, j, size;
1128 // note: there's no validation done here on buffer objects because it
1129 // is somewhat difficult to get at the data, and gl_paranoid can be
1130 // used without buffer objects if the need arises
1131 // (the data could be gotten using glMapBuffer but it would be very
1132 // slow due to uncachable video memory reads)
1133 if (!qglIsEnabled(GL_VERTEX_ARRAY))
1134 Con_Print("R_Mesh_Draw: vertex array not enabled\n");
1136 if (gl_state.pointer_vertex)
1137 for (j = 0, size = numvertices * 3, p = (int *)((float *)gl_state.pointer_vertex + firstvertex * 3);j < size;j++, p++)
1139 if (gl_state.pointer_color_enabled)
1141 if (!qglIsEnabled(GL_COLOR_ARRAY))
1142 Con_Print("R_Mesh_Draw: color array set but not enabled\n");
1144 if (gl_state.pointer_color && gl_state.pointer_color_enabled)
1145 for (j = 0, size = numvertices * 4, p = (int *)((float *)gl_state.pointer_color + firstvertex * 4);j < size;j++, p++)
1148 for (i = 0;i < backendarrayunits;i++)
1150 if (gl_state.units[i].arrayenabled)
1152 GL_ClientActiveTexture(i);
1153 if (!qglIsEnabled(GL_TEXTURE_COORD_ARRAY))
1154 Con_Print("R_Mesh_Draw: texcoord array set but not enabled\n");
1156 if (gl_state.units[i].pointer_texcoord && gl_state.units[i].arrayenabled)
1157 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++)
1163 for (i = 0;i < (unsigned int) numtriangles * 3;i++)
1165 if (element3i[i] < firstvertex || element3i[i] >= firstvertex + numvertices)
1167 Con_Printf("R_Mesh_Draw: invalid vertex index %i (outside range %i - %i) in element3i array\n", element3i[i], firstvertex, firstvertex + numvertices);
1174 for (i = 0;i < (unsigned int) numtriangles * 3;i++)
1176 if (element3s[i] < firstvertex || element3s[i] >= firstvertex + numvertices)
1178 Con_Printf("R_Mesh_Draw: invalid vertex index %i (outside range %i - %i) in element3s array\n", element3s[i], firstvertex, firstvertex + numvertices);
1185 if (r_render.integer)
1188 if (gl_mesh_testmanualfeeding.integer)
1190 unsigned int i, j, element;
1192 qglBegin(GL_TRIANGLES);
1193 for (i = 0;i < (unsigned int) numtriangles * 3;i++)
1195 element = element3i ? element3i[i] : element3s[i];
1196 for (j = 0;j < backendarrayunits;j++)
1198 if (gl_state.units[j].pointer_texcoord && gl_state.units[j].arrayenabled)
1200 if (backendarrayunits > 1)
1202 if (gl_state.units[j].arraycomponents == 4)
1204 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 4;
1205 qglMultiTexCoord4f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2], p[3]);
1207 else if (gl_state.units[j].arraycomponents == 3)
1209 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 3;
1210 qglMultiTexCoord3f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2]);
1212 else if (gl_state.units[j].arraycomponents == 2)
1214 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 2;
1215 qglMultiTexCoord2f(GL_TEXTURE0_ARB + j, p[0], p[1]);
1219 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 1;
1220 qglMultiTexCoord1f(GL_TEXTURE0_ARB + j, p[0]);
1225 if (gl_state.units[j].arraycomponents == 4)
1227 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 4;
1228 qglTexCoord4f(p[0], p[1], p[2], p[3]);
1230 else if (gl_state.units[j].arraycomponents == 3)
1232 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 3;
1233 qglTexCoord3f(p[0], p[1], p[2]);
1235 else if (gl_state.units[j].arraycomponents == 2)
1237 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 2;
1238 qglTexCoord2f(p[0], p[1]);
1242 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 1;
1243 qglTexCoord1f(p[0]);
1248 if (gl_state.pointer_color && gl_state.pointer_color_enabled)
1250 p = ((const GLfloat *)(gl_state.pointer_color)) + element * 4;
1251 qglColor4f(p[0], p[1], p[2], p[3]);
1253 p = ((const GLfloat *)(gl_state.pointer_vertex)) + element * 3;
1254 qglVertex3f(p[0], p[1], p[2]);
1259 else if (gl_mesh_testarrayelement.integer)
1262 qglBegin(GL_TRIANGLES);
1265 for (i = 0;i < numtriangles * 3;i++)
1266 qglArrayElement(element3i[i]);
1270 for (i = 0;i < numtriangles * 3;i++)
1271 qglArrayElement(element3s[i]);
1276 else if (bufferobject3s)
1278 GL_BindEBO(bufferobject3s);
1279 if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
1281 qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices, numelements, GL_UNSIGNED_SHORT, (void *)(firsttriangle * sizeof(unsigned short[3])));
1286 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_SHORT, (void *)(firsttriangle * sizeof(unsigned short[3])));
1290 else if (bufferobject3i)
1292 GL_BindEBO(bufferobject3i);
1293 if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
1295 qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices, numelements, GL_UNSIGNED_INT, (void *)(firsttriangle * sizeof(unsigned int[3])));
1300 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, (void *)(firsttriangle * sizeof(unsigned int[3])));
1307 if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
1309 qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices, numelements, GL_UNSIGNED_SHORT, element3s);
1314 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_SHORT, element3s);
1321 if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
1323 qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices, numelements, GL_UNSIGNED_INT, element3i);
1328 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, element3i);
1335 // restores backend state, used when done with 3D rendering
1336 void R_Mesh_Finish(void)
1341 GL_LockArrays(0, 0);
1344 for (i = 0;i < backendimageunits;i++)
1346 GL_ActiveTexture(i);
1347 qglBindTexture(GL_TEXTURE_1D, 0);CHECKGLERROR
1348 qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
1351 qglBindTexture(GL_TEXTURE_3D, 0);CHECKGLERROR
1353 if (gl_texturecubemap)
1355 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
1358 for (i = 0;i < backendarrayunits;i++)
1360 GL_ActiveTexture(backendarrayunits - 1 - i);
1361 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1363 for (i = 0;i < backendunits;i++)
1365 GL_ActiveTexture(backendunits - 1 - i);
1366 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1367 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1370 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1372 if (gl_texturecubemap)
1374 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1376 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
1377 if (gl_combine.integer)
1379 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
1380 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
1383 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1384 qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
1386 qglDisable(GL_BLEND);CHECKGLERROR
1387 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
1388 qglDepthMask(GL_TRUE);CHECKGLERROR
1389 qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);CHECKGLERROR
1392 int R_Mesh_CreateStaticBufferObject(unsigned int target, void *data, size_t size, const char *name)
1394 gl_bufferobjectinfo_t *info;
1395 GLuint bufferobject;
1397 if (!gl_vbo.integer)
1400 qglGenBuffersARB(1, &bufferobject);
1403 case GL_ELEMENT_ARRAY_BUFFER_ARB: GL_BindEBO(bufferobject);break;
1404 case GL_ARRAY_BUFFER_ARB: GL_BindVBO(bufferobject);break;
1405 default: Sys_Error("R_Mesh_CreateStaticBufferObject: unknown target type %i\n", target);return 0;
1407 qglBufferDataARB(target, size, data, GL_STATIC_DRAW_ARB);
1409 info = Mem_ExpandableArray_AllocRecord(&gl_bufferobjectinfoarray);
1410 memset(info, 0, sizeof(*info));
1411 info->target = target;
1412 info->object = bufferobject;
1414 strlcpy(info->name, name, sizeof(info->name));
1416 return (int)bufferobject;
1419 void R_Mesh_DestroyBufferObject(int bufferobject)
1422 gl_bufferobjectinfo_t *info;
1424 qglDeleteBuffersARB(1, (GLuint *)&bufferobject);
1426 endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
1427 for (i = 0;i < endindex;i++)
1429 info = Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
1432 if (info->object == bufferobject)
1434 Mem_ExpandableArray_FreeRecord(&gl_bufferobjectinfoarray, (void *)info);
1440 void GL_Mesh_ListVBOs(qboolean printeach)
1443 size_t ebocount = 0, ebomemory = 0;
1444 size_t vbocount = 0, vbomemory = 0;
1445 gl_bufferobjectinfo_t *info;
1446 endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
1447 for (i = 0;i < endindex;i++)
1449 info = Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
1452 switch(info->target)
1454 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;
1455 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;
1456 default: Con_Printf("gl_vbostats: unknown target type %i\n", info->target);break;
1459 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);
1462 void R_Mesh_Matrix(const matrix4x4_t *matrix)
1464 if (memcmp(matrix, &backend_modelmatrix, sizeof(matrix4x4_t)))
1466 double glmatrix[16];
1467 backend_modelmatrix = *matrix;
1468 Matrix4x4_Concat(&backend_modelviewmatrix, &backend_viewmatrix, matrix);
1469 Matrix4x4_ToArrayDoubleGL(&backend_modelviewmatrix, glmatrix);
1471 qglLoadMatrixd(glmatrix);CHECKGLERROR
1475 void R_Mesh_VertexPointer(const float *vertex3f, int bufferobject, size_t bufferoffset)
1477 if (!gl_vbo.integer)
1479 if (gl_state.pointer_vertex != vertex3f || gl_state.pointer_vertex_buffer != bufferobject || gl_state.pointer_vertex_offset != bufferoffset)
1481 gl_state.pointer_vertex = vertex3f;
1482 gl_state.pointer_vertex_buffer = bufferobject;
1483 gl_state.pointer_vertex_offset = bufferoffset;
1485 GL_BindVBO(bufferobject);
1486 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), bufferobject ? (void *)bufferoffset : vertex3f);CHECKGLERROR
1490 void R_Mesh_ColorPointer(const float *color4f, int bufferobject, size_t bufferoffset)
1492 // note: this can not rely on bufferobject to decide whether a color array
1493 // is supplied, because surfmesh_t shares one vbo for all arrays, which
1494 // means that a valid vbo may be supplied even if there is no color array.
1497 if (!gl_vbo.integer)
1499 // caller wants color array enabled
1500 if (!gl_state.pointer_color_enabled)
1502 gl_state.pointer_color_enabled = true;
1504 qglEnableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1506 if (gl_state.pointer_color != color4f || gl_state.pointer_color_buffer != bufferobject || gl_state.pointer_color_offset != bufferoffset)
1508 gl_state.pointer_color = color4f;
1509 gl_state.pointer_color_buffer = bufferobject;
1510 gl_state.pointer_color_offset = bufferoffset;
1512 GL_BindVBO(bufferobject);
1513 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), bufferobject ? (void *)bufferoffset : color4f);CHECKGLERROR
1518 // caller wants color array disabled
1519 if (gl_state.pointer_color_enabled)
1521 gl_state.pointer_color_enabled = false;
1523 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1524 // when color array is on the glColor gets trashed, set it again
1525 qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);CHECKGLERROR
1530 void R_Mesh_TexCoordPointer(unsigned int unitnum, unsigned int numcomponents, const float *texcoord, int bufferobject, size_t bufferoffset)
1532 gltextureunit_t *unit = gl_state.units + unitnum;
1533 // update array settings
1535 // note: there is no need to check bufferobject here because all cases
1536 // that involve a valid bufferobject also supply a texcoord array
1539 if (!gl_vbo.integer)
1541 // texture array unit is enabled, enable the array
1542 if (!unit->arrayenabled)
1544 unit->arrayenabled = true;
1545 GL_ClientActiveTexture(unitnum);
1546 qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1549 if (unit->pointer_texcoord != texcoord || unit->pointer_texcoord_buffer != bufferobject || unit->pointer_texcoord_offset != bufferoffset || unit->arraycomponents != numcomponents)
1551 unit->pointer_texcoord = texcoord;
1552 unit->pointer_texcoord_buffer = bufferobject;
1553 unit->pointer_texcoord_offset = bufferoffset;
1554 unit->arraycomponents = numcomponents;
1555 GL_ClientActiveTexture(unitnum);
1556 GL_BindVBO(bufferobject);
1557 qglTexCoordPointer(unit->arraycomponents, GL_FLOAT, sizeof(float) * unit->arraycomponents, bufferobject ? (void *)bufferoffset : texcoord);CHECKGLERROR
1562 // texture array unit is disabled, disable the array
1563 if (unit->arrayenabled)
1565 unit->arrayenabled = false;
1566 GL_ClientActiveTexture(unitnum);
1567 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1572 void R_Mesh_TexBindAll(unsigned int unitnum, int tex1d, int tex2d, int tex3d, int texcubemap)
1574 gltextureunit_t *unit = gl_state.units + unitnum;
1575 if (unitnum >= backendimageunits)
1577 // update 1d texture binding
1578 if (unit->t1d != tex1d)
1580 GL_ActiveTexture(unitnum);
1581 if (unitnum < backendunits)
1587 qglEnable(GL_TEXTURE_1D);CHECKGLERROR
1594 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1599 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1601 // update 2d texture binding
1602 if (unit->t2d != tex2d)
1604 GL_ActiveTexture(unitnum);
1605 if (unitnum < backendunits)
1611 qglEnable(GL_TEXTURE_2D);CHECKGLERROR
1618 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1623 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1625 // update 3d texture binding
1626 if (unit->t3d != tex3d)
1628 GL_ActiveTexture(unitnum);
1629 if (unitnum < backendunits)
1635 qglEnable(GL_TEXTURE_3D);CHECKGLERROR
1642 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1647 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1649 // update cubemap texture binding
1650 if (unit->tcubemap != texcubemap)
1652 GL_ActiveTexture(unitnum);
1653 if (unitnum < backendunits)
1657 if (unit->tcubemap == 0)
1659 qglEnable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1666 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1670 unit->tcubemap = texcubemap;
1671 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1675 void R_Mesh_TexBind1D(unsigned int unitnum, int texnum)
1677 gltextureunit_t *unit = gl_state.units + unitnum;
1678 if (unitnum >= backendimageunits)
1680 // update 1d texture binding
1681 if (unit->t1d != texnum)
1683 GL_ActiveTexture(unitnum);
1684 if (unitnum < backendunits)
1690 qglEnable(GL_TEXTURE_1D);CHECKGLERROR
1697 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1702 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1704 // update 2d texture binding
1707 GL_ActiveTexture(unitnum);
1708 if (unitnum < backendunits)
1712 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1716 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1718 // update 3d texture binding
1721 GL_ActiveTexture(unitnum);
1722 if (unitnum < backendunits)
1726 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1730 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1732 // update cubemap texture binding
1735 GL_ActiveTexture(unitnum);
1736 if (unitnum < backendunits)
1740 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1744 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1748 void R_Mesh_TexBind(unsigned int unitnum, int texnum)
1750 gltextureunit_t *unit = gl_state.units + unitnum;
1751 if (unitnum >= backendimageunits)
1753 // update 1d texture binding
1756 GL_ActiveTexture(unitnum);
1757 if (unitnum < backendunits)
1761 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1765 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1767 // update 2d texture binding
1768 if (unit->t2d != texnum)
1770 GL_ActiveTexture(unitnum);
1771 if (unitnum < backendunits)
1777 qglEnable(GL_TEXTURE_2D);CHECKGLERROR
1784 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1789 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1791 // update 3d texture binding
1794 GL_ActiveTexture(unitnum);
1795 if (unitnum < backendunits)
1799 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1803 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1805 // update cubemap texture binding
1806 if (unit->tcubemap != 0)
1808 GL_ActiveTexture(unitnum);
1809 if (unitnum < backendunits)
1813 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1817 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1821 void R_Mesh_TexBind3D(unsigned int unitnum, int texnum)
1823 gltextureunit_t *unit = gl_state.units + unitnum;
1824 if (unitnum >= backendimageunits)
1826 // update 1d texture binding
1829 GL_ActiveTexture(unitnum);
1830 if (unitnum < backendunits)
1834 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1838 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1840 // update 2d texture binding
1843 GL_ActiveTexture(unitnum);
1844 if (unitnum < backendunits)
1848 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1852 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1854 // update 3d texture binding
1855 if (unit->t3d != texnum)
1857 GL_ActiveTexture(unitnum);
1858 if (unitnum < backendunits)
1864 qglEnable(GL_TEXTURE_3D);CHECKGLERROR
1871 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1876 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1878 // update cubemap texture binding
1879 if (unit->tcubemap != 0)
1881 GL_ActiveTexture(unitnum);
1882 if (unitnum < backendunits)
1886 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1890 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1894 void R_Mesh_TexBindCubeMap(unsigned int unitnum, int texnum)
1896 gltextureunit_t *unit = gl_state.units + unitnum;
1897 if (unitnum >= backendimageunits)
1899 // update 1d texture binding
1902 GL_ActiveTexture(unitnum);
1903 if (unitnum < backendunits)
1907 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
1911 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
1913 // update 2d texture binding
1916 GL_ActiveTexture(unitnum);
1917 if (unitnum < backendunits)
1921 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1925 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1927 // update 3d texture binding
1930 GL_ActiveTexture(unitnum);
1931 if (unitnum < backendunits)
1935 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1939 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1941 // update cubemap texture binding
1942 if (unit->tcubemap != texnum)
1944 GL_ActiveTexture(unitnum);
1945 if (unitnum < backendunits)
1949 if (unit->tcubemap == 0)
1951 qglEnable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1958 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1962 unit->tcubemap = texnum;
1963 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1967 static const double gl_identitymatrix[16] = {1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1};
1969 void R_Mesh_TexMatrix(unsigned int unitnum, const matrix4x4_t *matrix)
1971 gltextureunit_t *unit = gl_state.units + unitnum;
1972 if (matrix->m[3][3])
1974 // texmatrix specified, check if it is different
1975 if (!unit->texmatrixenabled || memcmp(&unit->matrix, matrix, sizeof(matrix4x4_t)))
1977 double glmatrix[16];
1978 unit->texmatrixenabled = true;
1979 unit->matrix = *matrix;
1981 Matrix4x4_ToArrayDoubleGL(&unit->matrix, glmatrix);
1982 GL_ActiveTexture(unitnum);
1983 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1984 qglLoadMatrixd(glmatrix);CHECKGLERROR
1985 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
1990 // no texmatrix specified, revert to identity
1991 if (unit->texmatrixenabled)
1993 unit->texmatrixenabled = false;
1994 unit->matrix = identitymatrix;
1996 GL_ActiveTexture(unitnum);
1997 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1998 qglLoadIdentity();CHECKGLERROR
1999 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
2004 void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, int rgbscale, int alphascale)
2006 gltextureunit_t *unit = gl_state.units + unitnum;
2008 if (gl_combine.integer)
2010 // GL_ARB_texture_env_combine
2012 combinergb = GL_MODULATE;
2014 combinealpha = GL_MODULATE;
2019 if (unit->combinergb != combinergb)
2021 unit->combinergb = combinergb;
2022 GL_ActiveTexture(unitnum);
2023 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
2025 if (unit->combinealpha != combinealpha)
2027 unit->combinealpha = combinealpha;
2028 GL_ActiveTexture(unitnum);
2029 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
2031 if (unit->rgbscale != rgbscale)
2033 GL_ActiveTexture(unitnum);
2034 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = rgbscale));CHECKGLERROR
2036 if (unit->alphascale != alphascale)
2038 GL_ActiveTexture(unitnum);
2039 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = alphascale));CHECKGLERROR
2046 combinergb = GL_MODULATE;
2047 if (unit->combinergb != combinergb)
2049 unit->combinergb = combinergb;
2050 GL_ActiveTexture(unitnum);
2051 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR
2056 void R_Mesh_TextureState(const rmeshstate_t *m)
2063 if (gl_backend_rebindtextures)
2065 gl_backend_rebindtextures = false;
2066 GL_SetupTextureState();
2070 for (i = 0;i < backendimageunits;i++)
2071 R_Mesh_TexBindAll(i, m->tex1d[i], m->tex[i], m->tex3d[i], m->texcubemap[i]);
2072 for (i = 0;i < backendarrayunits;i++)
2074 if (m->pointer_texcoord3f[i])
2075 R_Mesh_TexCoordPointer(i, 3, m->pointer_texcoord3f[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
2077 R_Mesh_TexCoordPointer(i, 2, m->pointer_texcoord[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
2079 for (i = 0;i < backendunits;i++)
2081 R_Mesh_TexMatrix(i, &m->texmatrix[i]);
2082 R_Mesh_TexCombine(i, m->texcombinergb[i], m->texcombinealpha[i], m->texrgbscale[i], m->texalphascale[i]);
2087 void R_Mesh_ResetTextureState(void)
2089 unsigned int unitnum;
2094 if (gl_backend_rebindtextures)
2096 gl_backend_rebindtextures = false;
2097 GL_SetupTextureState();
2101 for (unitnum = 0;unitnum < backendimageunits;unitnum++)
2103 gltextureunit_t *unit = gl_state.units + unitnum;
2104 // update 1d texture binding
2107 GL_ActiveTexture(unitnum);
2108 if (unitnum < backendunits)
2110 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
2113 qglBindTexture(GL_TEXTURE_1D, unit->t1d);CHECKGLERROR
2115 // update 2d texture binding
2118 GL_ActiveTexture(unitnum);
2119 if (unitnum < backendunits)
2121 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
2124 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
2126 // update 3d texture binding
2129 GL_ActiveTexture(unitnum);
2130 if (unitnum < backendunits)
2132 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
2135 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
2137 // update cubemap texture binding
2140 GL_ActiveTexture(unitnum);
2141 if (unitnum < backendunits)
2143 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
2146 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
2149 for (unitnum = 0;unitnum < backendarrayunits;unitnum++)
2151 gltextureunit_t *unit = gl_state.units + unitnum;
2152 // texture array unit is disabled, disable the array
2153 if (unit->arrayenabled)
2155 unit->arrayenabled = false;
2156 GL_ClientActiveTexture(unitnum);
2157 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
2160 for (unitnum = 0;unitnum < backendunits;unitnum++)
2162 gltextureunit_t *unit = gl_state.units + unitnum;
2163 // no texmatrix specified, revert to identity
2164 if (unit->texmatrixenabled)
2166 unit->texmatrixenabled = false;
2167 unit->matrix = identitymatrix;
2169 GL_ActiveTexture(unitnum);
2170 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
2171 qglLoadIdentity();CHECKGLERROR
2172 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
2174 if (gl_combine.integer)
2176 // GL_ARB_texture_env_combine
2177 if (unit->combinergb != GL_MODULATE)
2179 unit->combinergb = GL_MODULATE;
2180 GL_ActiveTexture(unitnum);
2181 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
2183 if (unit->combinealpha != GL_MODULATE)
2185 unit->combinealpha = GL_MODULATE;
2186 GL_ActiveTexture(unitnum);
2187 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
2189 if (unit->rgbscale != 1)
2191 GL_ActiveTexture(unitnum);
2192 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = 1));CHECKGLERROR
2194 if (unit->alphascale != 1)
2196 GL_ActiveTexture(unitnum);
2197 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = 1));CHECKGLERROR
2203 if (unit->combinergb != GL_MODULATE)
2205 unit->combinergb = GL_MODULATE;
2206 GL_ActiveTexture(unitnum);
2207 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR