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 3D views (you want this on!)"};
13 cvar_t r_renderview = {0, "r_renderview", "1", "enables rendering 3D views (you want this on!)"};
14 cvar_t r_waterwarp = {CVAR_SAVE, "r_waterwarp", "1", "warp view while underwater"};
15 cvar_t gl_polyblend = {CVAR_SAVE, "gl_polyblend", "1", "tints view while underwater, hurt, etc"};
16 cvar_t gl_dither = {CVAR_SAVE, "gl_dither", "1", "enables OpenGL dithering (16bit looks bad with this off)"};
17 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"};
18 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"};
19 cvar_t gl_vbo = {CVAR_SAVE, "gl_vbo", "3", "make use of GL_ARB_vertex_buffer_object extension to store static geometry in video memory for faster rendering, 0 disables VBO allocation or use, 1 enables VBOs for vertex and triangle data, 2 only for vertex data, 3 for vertex data and triangle data of simple meshes (ones with only one surface)"};
20 cvar_t gl_fbo = {CVAR_SAVE, "gl_fbo", "1", "make use of GL_ARB_framebuffer_object extension to enable shadowmaps and other features using pixel formats different from the framebuffer"};
22 cvar_t v_flipped = {0, "v_flipped", "0", "mirror the screen (poor man's left handed mode)"};
23 qboolean v_flipped_state = false;
25 int gl_maxdrawrangeelementsvertices;
26 int gl_maxdrawrangeelementsindices;
31 void GL_PrintError(int errornumber, char *filename, int linenumber)
35 #ifdef GL_INVALID_ENUM
37 Con_Printf("GL_INVALID_ENUM at %s:%i\n", filename, linenumber);
40 #ifdef GL_INVALID_VALUE
41 case GL_INVALID_VALUE:
42 Con_Printf("GL_INVALID_VALUE at %s:%i\n", filename, linenumber);
45 #ifdef GL_INVALID_OPERATION
46 case GL_INVALID_OPERATION:
47 Con_Printf("GL_INVALID_OPERATION at %s:%i\n", filename, linenumber);
50 #ifdef GL_STACK_OVERFLOW
51 case GL_STACK_OVERFLOW:
52 Con_Printf("GL_STACK_OVERFLOW at %s:%i\n", filename, linenumber);
55 #ifdef GL_STACK_UNDERFLOW
56 case GL_STACK_UNDERFLOW:
57 Con_Printf("GL_STACK_UNDERFLOW at %s:%i\n", filename, linenumber);
60 #ifdef GL_OUT_OF_MEMORY
61 case GL_OUT_OF_MEMORY:
62 Con_Printf("GL_OUT_OF_MEMORY at %s:%i\n", filename, linenumber);
65 #ifdef GL_TABLE_TOO_LARGE
66 case GL_TABLE_TOO_LARGE:
67 Con_Printf("GL_TABLE_TOO_LARGE at %s:%i\n", filename, linenumber);
70 #ifdef GL_INVALID_FRAMEBUFFER_OPERATION_EXT
71 case GL_INVALID_FRAMEBUFFER_OPERATION_EXT:
72 Con_Printf("GL_INVALID_FRAMEBUFFER_OPERATION at %s:%i\n", filename, linenumber);
76 Con_Printf("GL UNKNOWN (%i) at %s:%i\n", errornumber, filename, linenumber);
82 #define BACKENDACTIVECHECK if (!gl_state.active) Sys_Error("GL backend function called when backend is not active");
84 void SCR_ScreenShot_f (void);
86 typedef struct gl_bufferobjectinfo_s
93 gl_bufferobjectinfo_t;
95 typedef struct gltextureunit_s
97 const void *pointer_texcoord;
98 size_t pointer_texcoord_offset;
99 int pointer_texcoord_buffer;
100 int t2d, t3d, tcubemap, trectangle;
102 unsigned int arraycomponents;
103 int rgbscale, alphascale;
104 int combinergb, combinealpha;
105 // texmatrixenabled exists only to avoid unnecessary texmatrix compares
106 int texmatrixenabled;
111 typedef struct gl_state_s
119 int colormask; // stored as bottom 4 bits: r g b a (3 2 1 0 order)
122 float polygonoffset[2];
126 unsigned int clientunit;
127 gltextureunit_t units[MAX_TEXTUREUNITS];
131 int vertexbufferobject;
132 int elementbufferobject;
133 qboolean pointer_color_enabled;
134 const void *pointer_vertex;
135 const void *pointer_color;
136 size_t pointer_vertex_offset;
137 size_t pointer_color_offset;
138 int pointer_vertex_buffer;
139 int pointer_color_buffer;
144 static gl_state_t gl_state;
146 static memexpandablearray_t gl_bufferobjectinfoarray;
148 static r_viewport_t backend_viewport;
149 static matrix4x4_t backend_modelmatrix;
150 static matrix4x4_t backend_modelviewmatrix;
153 note: here's strip order for a terrain row:
160 A0B, 01B, B1C, 12C, C2D, 23D, D3E, 34E
162 *elements++ = i + row;
164 *elements++ = i + row + 1;
167 *elements++ = i + row + 1;
170 for (y = 0;y < rows - 1;y++)
172 for (x = 0;x < columns - 1;x++)
175 *elements++ = i + columns;
177 *elements++ = i + columns + 1;
180 *elements++ = i + columns + 1;
191 for (y = 0;y < rows - 1;y++)
193 for (x = 0;x < columns - 1;x++)
197 *elements++ = i + columns;
198 *elements++ = i + columns + 1;
199 *elements++ = i + columns;
200 *elements++ = i + columns + 1;
206 int polygonelement3i[(POLYGONELEMENTS_MAXPOINTS-2)*3];
207 unsigned short polygonelement3s[(POLYGONELEMENTS_MAXPOINTS-2)*3];
208 int quadelement3i[QUADELEMENTS_MAXQUADS*6];
209 unsigned short quadelement3s[QUADELEMENTS_MAXQUADS*6];
211 void GL_VBOStats_f(void)
213 GL_Mesh_ListVBOs(true);
216 static void GL_Backend_ResetState(void);
218 static void gl_backend_start(void)
222 if (qglDrawRangeElements != NULL)
225 qglGetIntegerv(GL_MAX_ELEMENTS_VERTICES, &gl_maxdrawrangeelementsvertices);
227 qglGetIntegerv(GL_MAX_ELEMENTS_INDICES, &gl_maxdrawrangeelementsindices);
229 Con_DPrintf("GL_MAX_ELEMENTS_VERTICES = %i\nGL_MAX_ELEMENTS_INDICES = %i\n", gl_maxdrawrangeelementsvertices, gl_maxdrawrangeelementsindices);
232 if (vid.support.arb_fragment_shader)
234 Con_DPrintf("GLSL shader support detected: texture units = %i texenv, %i image, %i array\n", vid.texunits, vid.teximageunits, vid.texarrayunits);
235 vid.teximageunits = bound(1, vid.teximageunits, MAX_TEXTUREUNITS);
236 vid.texarrayunits = bound(1, vid.texarrayunits, MAX_TEXTUREUNITS);
239 Con_DPrintf("GL_MAX_TEXTUREUNITS = %i\n", vid.texunits);
241 Mem_ExpandableArray_NewArray(&gl_bufferobjectinfoarray, r_main_mempool, sizeof(gl_bufferobjectinfo_t), 128);
243 Con_DPrintf("OpenGL backend started.\n");
247 gl_state.active = true;
248 GL_Backend_ResetState();
251 static void gl_backend_shutdown(void)
253 gl_state.active = false;
255 Con_DPrint("OpenGL Backend shutting down\n");
257 Mem_ExpandableArray_FreeArray(&gl_bufferobjectinfoarray);
259 memset(&gl_state, 0, sizeof(gl_state));
262 static void gl_backend_newmap(void)
266 void gl_backend_init(void)
270 for (i = 0;i < POLYGONELEMENTS_MAXPOINTS - 2;i++)
272 polygonelement3s[i * 3 + 0] = 0;
273 polygonelement3s[i * 3 + 1] = i + 1;
274 polygonelement3s[i * 3 + 2] = i + 2;
276 // elements for rendering a series of quads as triangles
277 for (i = 0;i < QUADELEMENTS_MAXQUADS;i++)
279 quadelement3s[i * 6 + 0] = i * 4;
280 quadelement3s[i * 6 + 1] = i * 4 + 1;
281 quadelement3s[i * 6 + 2] = i * 4 + 2;
282 quadelement3s[i * 6 + 3] = i * 4;
283 quadelement3s[i * 6 + 4] = i * 4 + 2;
284 quadelement3s[i * 6 + 5] = i * 4 + 3;
287 for (i = 0;i < (POLYGONELEMENTS_MAXPOINTS - 2)*3;i++)
288 polygonelement3i[i] = polygonelement3s[i];
289 for (i = 0;i < QUADELEMENTS_MAXQUADS*3;i++)
290 quadelement3i[i] = quadelement3s[i];
292 Cvar_RegisterVariable(&r_render);
293 Cvar_RegisterVariable(&r_renderview);
294 Cvar_RegisterVariable(&r_waterwarp);
295 Cvar_RegisterVariable(&gl_polyblend);
296 Cvar_RegisterVariable(&v_flipped);
297 Cvar_RegisterVariable(&gl_dither);
298 Cvar_RegisterVariable(&gl_lockarrays);
299 Cvar_RegisterVariable(&gl_lockarrays_minimumvertices);
300 Cvar_RegisterVariable(&gl_vbo);
301 Cvar_RegisterVariable(&gl_paranoid);
302 Cvar_RegisterVariable(&gl_printcheckerror);
304 Cvar_RegisterVariable(&gl_mesh_drawrangeelements);
305 Cvar_RegisterVariable(&gl_mesh_testarrayelement);
306 Cvar_RegisterVariable(&gl_mesh_testmanualfeeding);
307 Cvar_RegisterVariable(&gl_mesh_prefer_short_elements);
309 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");
311 R_RegisterModule("GL_Backend", gl_backend_start, gl_backend_shutdown, gl_backend_newmap);
314 void GL_SetMirrorState(qboolean state);
316 void R_Viewport_TransformToScreen(const r_viewport_t *v, const vec4_t in, vec4_t out)
320 Matrix4x4_Transform4 (&v->viewmatrix, in, temp);
321 Matrix4x4_Transform4 (&v->projectmatrix, temp, out);
323 out[0] = v->x + (out[0] * iw + 1.0f) * v->width * 0.5f;
324 out[1] = v->y + v->height - (out[1] * iw + 1.0f) * v->height * 0.5f;
325 out[2] = v->z + (out[2] * iw + 1.0f) * v->depth * 0.5f;
328 static void R_Viewport_ApplyNearClipPlane(r_viewport_t *v, double normalx, double normaly, double normalz, double dist)
332 float clipPlane[4], v3[3], v4[3];
335 // This is inspired by Oblique Depth Projection from http://www.terathon.com/code/oblique.php
337 VectorSet(normal, normalx, normaly, normalz);
338 Matrix4x4_Transform3x3(&v->viewmatrix, normal, clipPlane);
339 VectorScale(normal, dist, v3);
340 Matrix4x4_Transform(&v->viewmatrix, v3, v4);
341 // FIXME: LordHavoc: I think this can be done more efficiently somehow but I can't remember the technique
342 clipPlane[3] = -DotProduct(v4, clipPlane);
346 // testing code for comparing results
348 VectorCopy4(clipPlane, clipPlane2);
349 R_Mesh_Matrix(&identitymatrix);
350 VectorSet(q, normal[0], normal[1], normal[2], -dist);
351 qglClipPlane(GL_CLIP_PLANE0, q);
352 qglGetClipPlane(GL_CLIP_PLANE0, q);
353 VectorCopy4(q, clipPlane);
357 // Calculate the clip-space corner point opposite the clipping plane
358 // as (sgn(clipPlane.x), sgn(clipPlane.y), 1, 1) and
359 // transform it into camera space by multiplying it
360 // by the inverse of the projection matrix
361 q[0] = ((clipPlane[0] < 0.0f ? -1.0f : clipPlane[0] > 0.0f ? 1.0f : 0.0f) + v->m[8]) / v->m[0];
362 q[1] = ((clipPlane[1] < 0.0f ? -1.0f : clipPlane[1] > 0.0f ? 1.0f : 0.0f) + v->m[9]) / v->m[5];
364 q[3] = (1.0f + v->m[10]) / v->m[14];
366 // Calculate the scaled plane vector
367 d = 2.0f / DotProduct4(clipPlane, q);
369 // Replace the third row of the projection matrix
370 v->m[2] = clipPlane[0] * d;
371 v->m[6] = clipPlane[1] * d;
372 v->m[10] = clipPlane[2] * d + 1.0f;
373 v->m[14] = clipPlane[3] * d;
376 void R_Viewport_InitOrtho(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, double x1, double y1, double x2, double y2, double nearclip, double farclip, const double *nearplane)
378 float left = x1, right = x2, bottom = y2, top = y1, zNear = nearclip, zFar = farclip;
379 memset(v, 0, sizeof(*v));
380 v->type = R_VIEWPORTTYPE_ORTHO;
381 v->cameramatrix = *cameramatrix;
388 v->m[0] = 2/(right - left);
389 v->m[5] = 2/(top - bottom);
390 v->m[10] = -2/(zFar - zNear);
391 v->m[12] = - (right + left)/(right - left);
392 v->m[13] = - (top + bottom)/(top - bottom);
393 v->m[14] = - (zFar + zNear)/(zFar - zNear);
396 Matrix4x4_Invert_Full(&v->viewmatrix, &v->cameramatrix);
397 Matrix4x4_FromArrayDoubleGL(&v->projectmatrix, v->m);
400 R_Viewport_ApplyNearClipPlane(v, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
406 Vector4Set(test1, (x1+x2)*0.5f, (y1+y2)*0.5f, 0.0f, 1.0f);
407 R_Viewport_TransformToScreen(v, test1, test2);
408 Con_Printf("%f %f %f -> %f %f %f\n", test1[0], test1[1], test1[2], test2[0], test2[1], test2[2]);
413 void R_Viewport_InitPerspective(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, double frustumx, double frustumy, double nearclip, double farclip, const double *nearplane)
415 matrix4x4_t tempmatrix, basematrix;
416 memset(v, 0, sizeof(*v));
418 if(v_flipped.integer)
419 frustumx = -frustumx;
421 v->type = R_VIEWPORTTYPE_PERSPECTIVE;
422 v->cameramatrix = *cameramatrix;
429 v->m[0] = 1.0 / frustumx;
430 v->m[5] = 1.0 / frustumy;
431 v->m[10] = -(farclip + nearclip) / (farclip - nearclip);
433 v->m[14] = -2 * nearclip * farclip / (farclip - nearclip);
435 Matrix4x4_Invert_Full(&tempmatrix, &v->cameramatrix);
436 Matrix4x4_CreateRotate(&basematrix, -90, 1, 0, 0);
437 Matrix4x4_ConcatRotate(&basematrix, 90, 0, 0, 1);
438 Matrix4x4_Concat(&v->viewmatrix, &basematrix, &tempmatrix);
440 Matrix4x4_FromArrayDoubleGL(&v->projectmatrix, v->m);
443 R_Viewport_ApplyNearClipPlane(v, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
446 void R_Viewport_InitPerspectiveInfinite(r_viewport_t *v, const matrix4x4_t *cameramatrix, int x, int y, int width, int height, double frustumx, double frustumy, double nearclip, const double *nearplane)
448 matrix4x4_t tempmatrix, basematrix;
449 const double nudge = 1.0 - 1.0 / (1<<23);
450 memset(v, 0, sizeof(*v));
452 if(v_flipped.integer)
453 frustumx = -frustumx;
455 v->type = R_VIEWPORTTYPE_PERSPECTIVE_INFINITEFARCLIP;
456 v->cameramatrix = *cameramatrix;
463 v->m[ 0] = 1.0 / frustumx;
464 v->m[ 5] = 1.0 / frustumy;
467 v->m[14] = -2 * nearclip * nudge;
469 Matrix4x4_Invert_Full(&tempmatrix, &v->cameramatrix);
470 Matrix4x4_CreateRotate(&basematrix, -90, 1, 0, 0);
471 Matrix4x4_ConcatRotate(&basematrix, 90, 0, 0, 1);
472 Matrix4x4_Concat(&v->viewmatrix, &basematrix, &tempmatrix);
474 Matrix4x4_FromArrayDoubleGL(&v->projectmatrix, v->m);
477 R_Viewport_ApplyNearClipPlane(v, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
480 float cubeviewmatrix[6][16] =
482 // standard cubemap projections
520 float rectviewmatrix[6][16] =
522 // sign-preserving cubemap projections
561 void R_Viewport_InitCubeSideView(r_viewport_t *v, const matrix4x4_t *cameramatrix, int side, int size, float nearclip, float farclip, const float *nearplane)
563 matrix4x4_t tempmatrix, basematrix;
564 memset(v, 0, sizeof(*v));
565 v->type = R_VIEWPORTTYPE_PERSPECTIVECUBESIDE;
566 v->cameramatrix = *cameramatrix;
570 v->m[0] = v->m[5] = 1.0f;
571 v->m[10] = -(farclip + nearclip) / (farclip - nearclip);
573 v->m[14] = -2 * nearclip * farclip / (farclip - nearclip);
575 Matrix4x4_FromArrayFloatGL(&basematrix, cubeviewmatrix[side]);
576 Matrix4x4_Invert_Simple(&tempmatrix, &v->cameramatrix);
577 Matrix4x4_Concat(&v->viewmatrix, &basematrix, &tempmatrix);
578 Matrix4x4_FromArrayDoubleGL(&v->projectmatrix, v->m);
581 R_Viewport_ApplyNearClipPlane(v, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
584 void R_Viewport_InitRectSideView(r_viewport_t *v, const matrix4x4_t *cameramatrix, int side, int size, int border, float nearclip, float farclip, const float *nearplane)
586 matrix4x4_t tempmatrix, basematrix;
587 memset(v, 0, sizeof(*v));
588 v->type = R_VIEWPORTTYPE_PERSPECTIVECUBESIDE;
589 v->cameramatrix = *cameramatrix;
590 v->x = (side & 1) * size;
591 v->y = (side >> 1) * size;
595 v->m[0] = v->m[5] = 1.0f * ((float)size - border) / size;
596 v->m[10] = -(farclip + nearclip) / (farclip - nearclip);
598 v->m[14] = -2 * nearclip * farclip / (farclip - nearclip);
600 Matrix4x4_FromArrayFloatGL(&basematrix, rectviewmatrix[side]);
601 Matrix4x4_Invert_Simple(&tempmatrix, &v->cameramatrix);
602 Matrix4x4_Concat(&v->viewmatrix, &basematrix, &tempmatrix);
603 Matrix4x4_FromArrayDoubleGL(&v->projectmatrix, v->m);
606 R_Viewport_ApplyNearClipPlane(v, nearplane[0], nearplane[1], nearplane[2], nearplane[3]);
609 void R_SetViewport(const r_viewport_t *v)
612 backend_viewport = *v;
615 qglViewport(v->x, v->y, v->width, v->height);CHECKGLERROR
617 // Load the projection matrix into OpenGL
618 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
619 qglLoadMatrixd(backend_viewport.m);CHECKGLERROR
620 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
622 // FIXME: v_flipped_state is evil, this probably breaks somewhere
623 GL_SetMirrorState(v_flipped.integer && (v->type == R_VIEWPORTTYPE_PERSPECTIVE || v->type == R_VIEWPORTTYPE_PERSPECTIVE_INFINITEFARCLIP));
625 // directly force an update of the modelview matrix
626 Matrix4x4_Concat(&backend_modelviewmatrix, &backend_viewport.viewmatrix, &backend_modelmatrix);
627 Matrix4x4_ToArrayFloatGL(&backend_modelviewmatrix, glmatrix);
628 qglLoadMatrixf(glmatrix);CHECKGLERROR
631 void R_GetViewport(r_viewport_t *v)
633 *v = backend_viewport;
636 static void GL_BindVBO(int bufferobject)
638 if (gl_state.vertexbufferobject != bufferobject)
640 gl_state.vertexbufferobject = bufferobject;
642 qglBindBufferARB(GL_ARRAY_BUFFER_ARB, bufferobject);
647 static void GL_BindEBO(int bufferobject)
649 if (gl_state.elementbufferobject != bufferobject)
651 gl_state.elementbufferobject = bufferobject;
653 qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, bufferobject);
658 static void GL_Backend_ResetState(void)
661 gltextureunit_t *unit;
662 memset(&gl_state, 0, sizeof(gl_state));
663 gl_state.active = true;
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 (vid.support.arb_vertex_buffer_object)
695 qglBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
696 qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
699 if (vid.support.ext_framebuffer_object)
701 qglBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
702 qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
705 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), NULL);CHECKGLERROR
706 qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
708 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), NULL);CHECKGLERROR
709 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
711 GL_Color(0, 0, 0, 0);
712 GL_Color(1, 1, 1, 1);
714 gl_state.unit = MAX_TEXTUREUNITS;
715 gl_state.clientunit = MAX_TEXTUREUNITS;
716 for (i = 0;i < MAX_TEXTUREUNITS;i++)
718 unit = gl_state.units + i;
720 unit->alphascale = 1;
721 unit->combinergb = GL_MODULATE;
722 unit->combinealpha = GL_MODULATE;
723 unit->matrix = identitymatrix;
726 for (i = 0;i < vid.teximageunits;i++)
729 qglBindTexture(GL_TEXTURE_2D, 0);CHECKGLERROR
730 if (vid.support.ext_texture_3d)
732 qglBindTexture(GL_TEXTURE_3D, 0);CHECKGLERROR
734 if (vid.support.arb_texture_cube_map)
736 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
738 if (vid.support.arb_texture_rectangle)
740 qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);CHECKGLERROR
744 for (i = 0;i < vid.texarrayunits;i++)
746 GL_ClientActiveTexture(i);
748 qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), NULL);CHECKGLERROR
749 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
752 for (i = 0;i < vid.texunits;i++)
755 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
756 if (vid.support.ext_texture_3d)
758 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
760 if (vid.support.arb_texture_cube_map)
762 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
764 if (vid.support.arb_texture_rectangle)
766 qglDisable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
768 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
769 qglLoadIdentity();CHECKGLERROR
770 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
771 if (gl_combine.integer)
773 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);CHECKGLERROR
774 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);CHECKGLERROR
775 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);CHECKGLERROR
776 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
777 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_TEXTURE);CHECKGLERROR // for GL_INTERPOLATE_ARB mode
778 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
779 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
780 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, GL_SRC_ALPHA);CHECKGLERROR
781 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_MODULATE);CHECKGLERROR
782 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);CHECKGLERROR
783 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
784 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_ARB, GL_CONSTANT_ARB);CHECKGLERROR
785 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
786 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
787 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
788 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
789 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
793 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
800 void GL_ActiveTexture(unsigned int num)
802 if (gl_state.unit != num)
805 if (qglActiveTexture)
808 qglActiveTexture(GL_TEXTURE0_ARB + gl_state.unit);
814 void GL_ClientActiveTexture(unsigned int num)
816 if (gl_state.clientunit != num)
818 gl_state.clientunit = num;
819 if (qglActiveTexture)
822 qglClientActiveTexture(GL_TEXTURE0_ARB + gl_state.clientunit);
828 void GL_BlendFunc(int blendfunc1, int blendfunc2)
830 if (gl_state.blendfunc1 != blendfunc1 || gl_state.blendfunc2 != blendfunc2)
833 qglBlendFunc(gl_state.blendfunc1 = blendfunc1, gl_state.blendfunc2 = blendfunc2);CHECKGLERROR
834 if (gl_state.blendfunc2 == GL_ZERO)
836 if (gl_state.blendfunc1 == GL_ONE)
841 qglDisable(GL_BLEND);CHECKGLERROR
849 qglEnable(GL_BLEND);CHECKGLERROR
858 qglEnable(GL_BLEND);CHECKGLERROR
864 void GL_DepthMask(int state)
866 if (gl_state.depthmask != state)
869 qglDepthMask(gl_state.depthmask = state);CHECKGLERROR
873 void GL_DepthTest(int state)
875 if (gl_state.depthtest != state)
877 gl_state.depthtest = state;
879 if (gl_state.depthtest)
881 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
885 qglDisable(GL_DEPTH_TEST);CHECKGLERROR
890 void GL_DepthRange(float nearfrac, float farfrac)
892 if (gl_state.depthrange[0] != nearfrac || gl_state.depthrange[1] != farfrac)
894 gl_state.depthrange[0] = nearfrac;
895 gl_state.depthrange[1] = farfrac;
896 qglDepthRange(nearfrac, farfrac);
900 void GL_PolygonOffset(float planeoffset, float depthoffset)
902 if (gl_state.polygonoffset[0] != planeoffset || gl_state.polygonoffset[1] != depthoffset)
904 gl_state.polygonoffset[0] = planeoffset;
905 gl_state.polygonoffset[1] = depthoffset;
906 qglPolygonOffset(planeoffset, depthoffset);
910 void GL_SetMirrorState(qboolean state)
912 if(!state != !v_flipped_state)
914 // change cull face mode!
915 if(gl_state.cullface == GL_BACK)
916 qglCullFace((gl_state.cullface = GL_FRONT));
917 else if(gl_state.cullface == GL_FRONT)
918 qglCullFace((gl_state.cullface = GL_BACK));
920 v_flipped_state = state;
923 void GL_CullFace(int state)
929 if(state == GL_FRONT)
931 else if(state == GL_BACK)
935 if (state != GL_NONE)
937 if (!gl_state.cullfaceenable)
939 gl_state.cullfaceenable = true;
940 qglEnable(GL_CULL_FACE);CHECKGLERROR
942 if (gl_state.cullface != state)
944 gl_state.cullface = state;
945 qglCullFace(gl_state.cullface);CHECKGLERROR
950 if (gl_state.cullfaceenable)
952 gl_state.cullfaceenable = false;
953 qglDisable(GL_CULL_FACE);CHECKGLERROR
958 void GL_AlphaTest(int state)
960 if (gl_state.alphatest != state)
962 gl_state.alphatest = state;
964 if (gl_state.alphatest)
966 qglEnable(GL_ALPHA_TEST);CHECKGLERROR
970 qglDisable(GL_ALPHA_TEST);CHECKGLERROR
975 void GL_ColorMask(int r, int g, int b, int a)
977 int state = r*8 + g*4 + b*2 + a*1;
978 if (gl_state.colormask != state)
980 gl_state.colormask = state;
982 qglColorMask((GLboolean)r, (GLboolean)g, (GLboolean)b, (GLboolean)a);CHECKGLERROR
986 void GL_Color(float cr, float cg, float cb, float ca)
988 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)
990 gl_state.color4f[0] = cr;
991 gl_state.color4f[1] = cg;
992 gl_state.color4f[2] = cb;
993 gl_state.color4f[3] = ca;
995 qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);
1000 void GL_LockArrays(int first, int count)
1002 if (count < gl_lockarrays_minimumvertices.integer)
1007 if (gl_state.lockrange_count != count || gl_state.lockrange_first != first)
1009 if (gl_state.lockrange_count)
1011 gl_state.lockrange_count = 0;
1013 qglUnlockArraysEXT();
1016 if (count && vid.support.ext_compiled_vertex_array && gl_lockarrays.integer)
1018 gl_state.lockrange_first = first;
1019 gl_state.lockrange_count = count;
1021 qglLockArraysEXT(first, count);
1027 void GL_Scissor (int x, int y, int width, int height)
1030 qglScissor(x, y,width,height);
1034 void GL_ScissorTest(int state)
1036 if(gl_state.scissortest == state)
1040 if((gl_state.scissortest = state))
1041 qglEnable(GL_SCISSOR_TEST);
1043 qglDisable(GL_SCISSOR_TEST);
1047 void GL_Clear(int mask)
1050 qglClear(mask);CHECKGLERROR
1053 // called at beginning of frame
1054 void R_Mesh_Start(void)
1058 if (gl_printcheckerror.integer && !gl_paranoid.integer)
1060 Con_Printf("WARNING: gl_printcheckerror is on but gl_paranoid is off, turning it on...\n");
1061 Cvar_SetValueQuick(&gl_paranoid, 1);
1065 qboolean GL_Backend_CompileShader(int programobject, GLenum shadertypeenum, const char *shadertype, int numstrings, const char **strings)
1069 char compilelog[MAX_INPUTLINE];
1070 shaderobject = qglCreateShaderObjectARB(shadertypeenum);CHECKGLERROR
1073 qglShaderSourceARB(shaderobject, numstrings, strings, NULL);CHECKGLERROR
1074 qglCompileShaderARB(shaderobject);CHECKGLERROR
1075 qglGetObjectParameterivARB(shaderobject, GL_OBJECT_COMPILE_STATUS_ARB, &shadercompiled);CHECKGLERROR
1076 qglGetInfoLogARB(shaderobject, sizeof(compilelog), NULL, compilelog);CHECKGLERROR
1077 if (compilelog[0] && developer.integer > 0)
1079 int i, j, pretextlines = 0;
1080 for (i = 0;i < numstrings - 1;i++)
1081 for (j = 0;strings[i][j];j++)
1082 if (strings[i][j] == '\n')
1084 Con_DPrintf("%s shader compile log:\n%s\n(line offset for any above warnings/errors: %i)\n", shadertype, compilelog, pretextlines);
1086 if (!shadercompiled)
1088 qglDeleteObjectARB(shaderobject);CHECKGLERROR
1091 qglAttachObjectARB(programobject, shaderobject);CHECKGLERROR
1092 qglDeleteObjectARB(shaderobject);CHECKGLERROR
1096 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)
1098 GLint programlinked;
1099 GLuint programobject = 0;
1100 char linklog[MAX_INPUTLINE];
1103 programobject = qglCreateProgramObjectARB();CHECKGLERROR
1107 if (vertexstrings_count && !GL_Backend_CompileShader(programobject, GL_VERTEX_SHADER_ARB, "vertex", vertexstrings_count, vertexstrings_list))
1110 #ifdef GL_GEOMETRY_SHADER_ARB
1111 if (geometrystrings_count && !GL_Backend_CompileShader(programobject, GL_GEOMETRY_SHADER_ARB, "geometry", geometrystrings_count, geometrystrings_list))
1115 if (fragmentstrings_count && !GL_Backend_CompileShader(programobject, GL_FRAGMENT_SHADER_ARB, "fragment", fragmentstrings_count, fragmentstrings_list))
1118 qglLinkProgramARB(programobject);CHECKGLERROR
1119 qglGetObjectParameterivARB(programobject, GL_OBJECT_LINK_STATUS_ARB, &programlinked);CHECKGLERROR
1120 qglGetInfoLogARB(programobject, sizeof(linklog), NULL, linklog);CHECKGLERROR
1123 Con_DPrintf("program link log:\n%s\n", linklog);
1124 // software vertex shader is ok but software fragment shader is WAY
1125 // too slow, fail program if so.
1126 // NOTE: this string might be ATI specific, but that's ok because the
1127 // ATI R300 chip (Radeon 9500-9800/X300) is the most likely to use a
1128 // software fragment shader due to low instruction and dependent
1130 if (strstr(linklog, "fragment shader will run in software"))
1131 programlinked = false;
1135 return programobject;
1137 qglDeleteObjectARB(programobject);CHECKGLERROR
1141 void GL_Backend_FreeProgram(unsigned int prog)
1144 qglDeleteObjectARB(prog);
1148 void GL_Backend_RenumberElements(int *out, int count, const int *in, int offset)
1153 for (i = 0;i < count;i++)
1154 *out++ = *in++ + offset;
1157 memcpy(out, in, sizeof(*out) * count);
1160 // renders triangles using vertices from the active arrays
1161 int paranoidblah = 0;
1162 void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtriangles, const int *element3i, const unsigned short *element3s, int bufferobject3i, int bufferobject3s)
1164 unsigned int numelements = numtriangles * 3;
1165 if (numvertices < 3 || numtriangles < 1)
1167 if (numvertices < 0 || numtriangles < 0 || developer.integer >= 100)
1168 Con_Printf("R_Mesh_Draw(%d, %d, %d, %d, %8p, %8p, %i, %i);\n", firstvertex, numvertices, firsttriangle, numtriangles, (void *)element3i, (void *)element3s, bufferobject3i, bufferobject3s);
1171 if (!gl_mesh_prefer_short_elements.integer)
1179 element3i += firsttriangle * 3;
1181 element3s += firsttriangle * 3;
1182 switch (gl_vbo.integer)
1187 bufferobject3i = bufferobject3s = 0;
1193 bufferobject3i = bufferobject3s = 0;
1197 r_refdef.stats.meshes++;
1198 r_refdef.stats.meshes_elements += numelements;
1199 if (gl_paranoid.integer)
1201 unsigned int i, j, size;
1203 // note: there's no validation done here on buffer objects because it
1204 // is somewhat difficult to get at the data, and gl_paranoid can be
1205 // used without buffer objects if the need arises
1206 // (the data could be gotten using glMapBuffer but it would be very
1207 // slow due to uncachable video memory reads)
1208 if (!qglIsEnabled(GL_VERTEX_ARRAY))
1209 Con_Print("R_Mesh_Draw: vertex array not enabled\n");
1211 if (gl_state.pointer_vertex)
1212 for (j = 0, size = numvertices * 3, p = (int *)((float *)gl_state.pointer_vertex + firstvertex * 3);j < size;j++, p++)
1214 if (gl_state.pointer_color_enabled)
1216 if (!qglIsEnabled(GL_COLOR_ARRAY))
1217 Con_Print("R_Mesh_Draw: color array set but not enabled\n");
1219 if (gl_state.pointer_color && gl_state.pointer_color_enabled)
1220 for (j = 0, size = numvertices * 4, p = (int *)((float *)gl_state.pointer_color + firstvertex * 4);j < size;j++, p++)
1223 for (i = 0;i < vid.texarrayunits;i++)
1225 if (gl_state.units[i].arrayenabled)
1227 GL_ClientActiveTexture(i);
1228 if (!qglIsEnabled(GL_TEXTURE_COORD_ARRAY))
1229 Con_Print("R_Mesh_Draw: texcoord array set but not enabled\n");
1231 if (gl_state.units[i].pointer_texcoord && gl_state.units[i].arrayenabled)
1232 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++)
1238 for (i = 0;i < (unsigned int) numtriangles * 3;i++)
1240 if (element3i[i] < firstvertex || element3i[i] >= firstvertex + numvertices)
1242 Con_Printf("R_Mesh_Draw: invalid vertex index %i (outside range %i - %i) in element3i array\n", element3i[i], firstvertex, firstvertex + numvertices);
1249 for (i = 0;i < (unsigned int) numtriangles * 3;i++)
1251 if (element3s[i] < firstvertex || element3s[i] >= firstvertex + numvertices)
1253 Con_Printf("R_Mesh_Draw: invalid vertex index %i (outside range %i - %i) in element3s array\n", element3s[i], firstvertex, firstvertex + numvertices);
1260 if (r_render.integer || r_refdef.draw2dstage)
1263 if (gl_mesh_testmanualfeeding.integer)
1265 unsigned int i, j, element;
1267 qglBegin(GL_TRIANGLES);
1268 for (i = 0;i < (unsigned int) numtriangles * 3;i++)
1270 element = element3i ? element3i[i] : element3s[i];
1271 for (j = 0;j < vid.texarrayunits;j++)
1273 if (gl_state.units[j].pointer_texcoord && gl_state.units[j].arrayenabled)
1275 if (vid.texarrayunits > 1)
1277 if (gl_state.units[j].arraycomponents == 4)
1279 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 4;
1280 qglMultiTexCoord4f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2], p[3]);
1282 else if (gl_state.units[j].arraycomponents == 3)
1284 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 3;
1285 qglMultiTexCoord3f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2]);
1287 else if (gl_state.units[j].arraycomponents == 2)
1289 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 2;
1290 qglMultiTexCoord2f(GL_TEXTURE0_ARB + j, p[0], p[1]);
1294 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 1;
1295 qglMultiTexCoord1f(GL_TEXTURE0_ARB + j, p[0]);
1300 if (gl_state.units[j].arraycomponents == 4)
1302 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 4;
1303 qglTexCoord4f(p[0], p[1], p[2], p[3]);
1305 else if (gl_state.units[j].arraycomponents == 3)
1307 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 3;
1308 qglTexCoord3f(p[0], p[1], p[2]);
1310 else if (gl_state.units[j].arraycomponents == 2)
1312 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 2;
1313 qglTexCoord2f(p[0], p[1]);
1317 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + element * 1;
1318 qglTexCoord1f(p[0]);
1323 if (gl_state.pointer_color && gl_state.pointer_color_enabled)
1325 p = ((const GLfloat *)(gl_state.pointer_color)) + element * 4;
1326 qglColor4f(p[0], p[1], p[2], p[3]);
1328 p = ((const GLfloat *)(gl_state.pointer_vertex)) + element * 3;
1329 qglVertex3f(p[0], p[1], p[2]);
1334 else if (gl_mesh_testarrayelement.integer)
1337 qglBegin(GL_TRIANGLES);
1340 for (i = 0;i < numtriangles * 3;i++)
1341 qglArrayElement(element3i[i]);
1345 for (i = 0;i < numtriangles * 3;i++)
1346 qglArrayElement(element3s[i]);
1351 else if (bufferobject3s)
1353 GL_BindEBO(bufferobject3s);
1354 if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
1356 qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices - 1, numelements, GL_UNSIGNED_SHORT, (void *)(firsttriangle * sizeof(unsigned short[3])));
1361 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_SHORT, (void *)(firsttriangle * sizeof(unsigned short[3])));
1365 else if (bufferobject3i)
1367 GL_BindEBO(bufferobject3i);
1368 if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
1370 qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices - 1, numelements, GL_UNSIGNED_INT, (void *)(firsttriangle * sizeof(unsigned int[3])));
1375 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, (void *)(firsttriangle * sizeof(unsigned int[3])));
1382 if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
1384 qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices - 1, numelements, GL_UNSIGNED_SHORT, element3s);
1389 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_SHORT, element3s);
1396 if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
1398 qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices - 1, numelements, GL_UNSIGNED_INT, element3i);
1403 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, element3i);
1410 // restores backend state, used when done with 3D rendering
1411 void R_Mesh_Finish(void)
1415 int R_Mesh_CreateStaticBufferObject(unsigned int target, void *data, size_t size, const char *name)
1417 gl_bufferobjectinfo_t *info;
1418 GLuint bufferobject;
1420 if (!gl_vbo.integer)
1423 qglGenBuffersARB(1, &bufferobject);
1426 case GL_ELEMENT_ARRAY_BUFFER_ARB: GL_BindEBO(bufferobject);break;
1427 case GL_ARRAY_BUFFER_ARB: GL_BindVBO(bufferobject);break;
1428 default: Sys_Error("R_Mesh_CreateStaticBufferObject: unknown target type %i\n", target);return 0;
1430 qglBufferDataARB(target, size, data, GL_STATIC_DRAW_ARB);
1432 info = (gl_bufferobjectinfo_t *) Mem_ExpandableArray_AllocRecord(&gl_bufferobjectinfoarray);
1433 memset(info, 0, sizeof(*info));
1434 info->target = target;
1435 info->object = bufferobject;
1437 strlcpy(info->name, name, sizeof(info->name));
1439 return (int)bufferobject;
1442 void R_Mesh_DestroyBufferObject(int bufferobject)
1445 gl_bufferobjectinfo_t *info;
1447 qglDeleteBuffersARB(1, (GLuint *)&bufferobject);
1449 endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
1450 for (i = 0;i < endindex;i++)
1452 info = (gl_bufferobjectinfo_t *) Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
1455 if (info->object == bufferobject)
1457 Mem_ExpandableArray_FreeRecord(&gl_bufferobjectinfoarray, (void *)info);
1463 void GL_Mesh_ListVBOs(qboolean printeach)
1466 size_t ebocount = 0, ebomemory = 0;
1467 size_t vbocount = 0, vbomemory = 0;
1468 gl_bufferobjectinfo_t *info;
1469 endindex = Mem_ExpandableArray_IndexRange(&gl_bufferobjectinfoarray);
1470 for (i = 0;i < endindex;i++)
1472 info = (gl_bufferobjectinfo_t *) Mem_ExpandableArray_RecordAtIndex(&gl_bufferobjectinfoarray, i);
1475 switch(info->target)
1477 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;
1478 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;
1479 default: Con_Printf("gl_vbostats: unknown target type %i\n", info->target);break;
1482 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);
1485 void R_Mesh_Matrix(const matrix4x4_t *matrix)
1487 if (memcmp(matrix, &backend_modelmatrix, sizeof(matrix4x4_t)))
1490 backend_modelmatrix = *matrix;
1491 Matrix4x4_Concat(&backend_modelviewmatrix, &backend_viewport.viewmatrix, &backend_modelmatrix);
1492 Matrix4x4_ToArrayFloatGL(&backend_modelviewmatrix, glmatrix);
1494 qglLoadMatrixf(glmatrix);CHECKGLERROR
1498 void R_Mesh_VertexPointer(const float *vertex3f, int bufferobject, size_t bufferoffset)
1500 if (!gl_vbo.integer || gl_mesh_testarrayelement.integer)
1502 if (gl_state.pointer_vertex != vertex3f || gl_state.pointer_vertex_buffer != bufferobject || gl_state.pointer_vertex_offset != bufferoffset)
1504 gl_state.pointer_vertex = vertex3f;
1505 gl_state.pointer_vertex_buffer = bufferobject;
1506 gl_state.pointer_vertex_offset = bufferoffset;
1508 GL_BindVBO(bufferobject);
1509 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), bufferobject ? (void *)bufferoffset : vertex3f);CHECKGLERROR
1513 void R_Mesh_ColorPointer(const float *color4f, int bufferobject, size_t bufferoffset)
1515 // note: this can not rely on bufferobject to decide whether a color array
1516 // is supplied, because surfmesh_t shares one vbo for all arrays, which
1517 // means that a valid vbo may be supplied even if there is no color array.
1520 if (!gl_vbo.integer || gl_mesh_testarrayelement.integer)
1522 // caller wants color array enabled
1523 if (!gl_state.pointer_color_enabled)
1525 gl_state.pointer_color_enabled = true;
1527 qglEnableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1529 if (gl_state.pointer_color != color4f || gl_state.pointer_color_buffer != bufferobject || gl_state.pointer_color_offset != bufferoffset)
1531 gl_state.pointer_color = color4f;
1532 gl_state.pointer_color_buffer = bufferobject;
1533 gl_state.pointer_color_offset = bufferoffset;
1535 GL_BindVBO(bufferobject);
1536 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), bufferobject ? (void *)bufferoffset : color4f);CHECKGLERROR
1541 // caller wants color array disabled
1542 if (gl_state.pointer_color_enabled)
1544 gl_state.pointer_color_enabled = false;
1546 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
1547 // when color array is on the glColor gets trashed, set it again
1548 qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);CHECKGLERROR
1553 void R_Mesh_TexCoordPointer(unsigned int unitnum, unsigned int numcomponents, const float *texcoord, int bufferobject, size_t bufferoffset)
1555 gltextureunit_t *unit = gl_state.units + unitnum;
1556 // update array settings
1558 // note: there is no need to check bufferobject here because all cases
1559 // that involve a valid bufferobject also supply a texcoord array
1562 if (!gl_vbo.integer || gl_mesh_testarrayelement.integer)
1564 // texture array unit is enabled, enable the array
1565 if (!unit->arrayenabled)
1567 unit->arrayenabled = true;
1568 GL_ClientActiveTexture(unitnum);
1569 qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1572 if (unit->pointer_texcoord != texcoord || unit->pointer_texcoord_buffer != bufferobject || unit->pointer_texcoord_offset != bufferoffset || unit->arraycomponents != numcomponents)
1574 unit->pointer_texcoord = texcoord;
1575 unit->pointer_texcoord_buffer = bufferobject;
1576 unit->pointer_texcoord_offset = bufferoffset;
1577 unit->arraycomponents = numcomponents;
1578 GL_ClientActiveTexture(unitnum);
1579 GL_BindVBO(bufferobject);
1580 qglTexCoordPointer(unit->arraycomponents, GL_FLOAT, sizeof(float) * unit->arraycomponents, bufferobject ? (void *)bufferoffset : texcoord);CHECKGLERROR
1585 // texture array unit is disabled, disable the array
1586 if (unit->arrayenabled)
1588 unit->arrayenabled = false;
1589 GL_ClientActiveTexture(unitnum);
1590 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1595 void R_Mesh_TexBindAll(unsigned int unitnum, int tex2d, int tex3d, int texcubemap, int texrectangle)
1597 gltextureunit_t *unit = gl_state.units + unitnum;
1598 if (unitnum >= vid.teximageunits)
1600 // update 2d texture binding
1601 if (unit->t2d != tex2d)
1603 GL_ActiveTexture(unitnum);
1604 if (unitnum < vid.texunits)
1610 qglEnable(GL_TEXTURE_2D);CHECKGLERROR
1617 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1622 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1624 // update 3d texture binding
1625 if (unit->t3d != tex3d)
1627 GL_ActiveTexture(unitnum);
1628 if (unitnum < vid.texunits)
1634 qglEnable(GL_TEXTURE_3D);CHECKGLERROR
1641 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1646 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1648 // update cubemap texture binding
1649 if (unit->tcubemap != texcubemap)
1651 GL_ActiveTexture(unitnum);
1652 if (unitnum < vid.texunits)
1656 if (unit->tcubemap == 0)
1658 qglEnable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1665 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1669 unit->tcubemap = texcubemap;
1670 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1672 // update rectangle texture binding
1673 if (unit->trectangle != texrectangle)
1675 GL_ActiveTexture(unitnum);
1676 if (unitnum < vid.texunits)
1680 if (unit->trectangle == 0)
1682 qglEnable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
1687 if (unit->trectangle)
1689 qglDisable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
1693 unit->trectangle = texrectangle;
1694 qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, unit->trectangle);CHECKGLERROR
1698 void R_Mesh_TexBind(unsigned int unitnum, int texnum)
1700 gltextureunit_t *unit = gl_state.units + unitnum;
1701 if (unitnum >= vid.teximageunits)
1703 // update 2d texture binding
1704 if (unit->t2d != texnum)
1706 GL_ActiveTexture(unitnum);
1707 if (unitnum < vid.texunits)
1713 qglEnable(GL_TEXTURE_2D);CHECKGLERROR
1720 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1725 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1727 // update 3d texture binding
1730 GL_ActiveTexture(unitnum);
1731 if (unitnum < vid.texunits)
1735 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1739 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1741 // update cubemap texture binding
1742 if (unit->tcubemap != 0)
1744 GL_ActiveTexture(unitnum);
1745 if (unitnum < vid.texunits)
1749 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1753 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1755 // update rectangle texture binding
1756 if (unit->trectangle != 0)
1758 GL_ActiveTexture(unitnum);
1759 if (unitnum < vid.texunits)
1761 if (unit->trectangle)
1763 qglDisable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
1766 unit->trectangle = 0;
1767 qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, unit->trectangle);CHECKGLERROR
1771 static const float gl_identitymatrix[16] = {1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1};
1773 void R_Mesh_TexMatrix(unsigned int unitnum, const matrix4x4_t *matrix)
1775 gltextureunit_t *unit = gl_state.units + unitnum;
1776 if (matrix->m[3][3])
1778 // texmatrix specified, check if it is different
1779 if (!unit->texmatrixenabled || memcmp(&unit->matrix, matrix, sizeof(matrix4x4_t)))
1782 unit->texmatrixenabled = true;
1783 unit->matrix = *matrix;
1785 Matrix4x4_ToArrayFloatGL(&unit->matrix, glmatrix);
1786 GL_ActiveTexture(unitnum);
1787 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1788 qglLoadMatrixf(glmatrix);CHECKGLERROR
1789 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
1794 // no texmatrix specified, revert to identity
1795 if (unit->texmatrixenabled)
1797 unit->texmatrixenabled = false;
1798 unit->matrix = identitymatrix;
1800 GL_ActiveTexture(unitnum);
1801 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1802 qglLoadIdentity();CHECKGLERROR
1803 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
1808 void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, int rgbscale, int alphascale)
1810 gltextureunit_t *unit = gl_state.units + unitnum;
1812 if (gl_combine.integer)
1814 // GL_ARB_texture_env_combine
1816 combinergb = GL_MODULATE;
1818 combinealpha = GL_MODULATE;
1823 if (unit->combinergb != combinergb)
1825 unit->combinergb = combinergb;
1826 GL_ActiveTexture(unitnum);
1827 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
1829 if (unit->combinealpha != combinealpha)
1831 unit->combinealpha = combinealpha;
1832 GL_ActiveTexture(unitnum);
1833 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
1835 if (unit->rgbscale != rgbscale)
1837 GL_ActiveTexture(unitnum);
1838 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = rgbscale));CHECKGLERROR
1840 if (unit->alphascale != alphascale)
1842 GL_ActiveTexture(unitnum);
1843 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = alphascale));CHECKGLERROR
1850 combinergb = GL_MODULATE;
1851 if (unit->combinergb != combinergb)
1853 unit->combinergb = combinergb;
1854 GL_ActiveTexture(unitnum);
1855 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR
1860 void R_Mesh_TextureState(const rmeshstate_t *m)
1867 for (i = 0;i < vid.teximageunits;i++)
1868 R_Mesh_TexBindAll(i, m->tex[i], m->tex3d[i], m->texcubemap[i], m->texrectangle[i]);
1869 for (i = 0;i < vid.texarrayunits;i++)
1871 if (m->pointer_texcoord3f[i])
1872 R_Mesh_TexCoordPointer(i, 3, m->pointer_texcoord3f[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
1874 R_Mesh_TexCoordPointer(i, 2, m->pointer_texcoord[i], m->pointer_texcoord_bufferobject[i], m->pointer_texcoord_bufferoffset[i]);
1876 for (i = 0;i < vid.texunits;i++)
1878 R_Mesh_TexMatrix(i, &m->texmatrix[i]);
1879 R_Mesh_TexCombine(i, m->texcombinergb[i], m->texcombinealpha[i], m->texrgbscale[i], m->texalphascale[i]);
1884 void R_Mesh_ResetTextureState(void)
1886 unsigned int unitnum;
1891 for (unitnum = 0;unitnum < vid.teximageunits;unitnum++)
1893 gltextureunit_t *unit = gl_state.units + unitnum;
1894 // update 2d texture binding
1897 GL_ActiveTexture(unitnum);
1898 if (unitnum < vid.texunits)
1900 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
1903 qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR
1905 // update 3d texture binding
1908 GL_ActiveTexture(unitnum);
1909 if (unitnum < vid.texunits)
1911 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
1914 qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR
1916 // update cubemap texture binding
1919 GL_ActiveTexture(unitnum);
1920 if (unitnum < vid.texunits)
1922 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
1925 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
1927 // update rectangle texture binding
1928 if (unit->trectangle)
1930 GL_ActiveTexture(unitnum);
1931 if (unitnum < vid.texunits)
1933 qglDisable(GL_TEXTURE_RECTANGLE_ARB);CHECKGLERROR
1935 unit->trectangle = 0;
1936 qglBindTexture(GL_TEXTURE_RECTANGLE_ARB, unit->trectangle);CHECKGLERROR
1939 for (unitnum = 0;unitnum < vid.texarrayunits;unitnum++)
1941 gltextureunit_t *unit = gl_state.units + unitnum;
1942 // texture array unit is disabled, disable the array
1943 if (unit->arrayenabled)
1945 unit->arrayenabled = false;
1946 GL_ClientActiveTexture(unitnum);
1947 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1950 for (unitnum = 0;unitnum < vid.texunits;unitnum++)
1952 gltextureunit_t *unit = gl_state.units + unitnum;
1953 // no texmatrix specified, revert to identity
1954 if (unit->texmatrixenabled)
1956 unit->texmatrixenabled = false;
1957 unit->matrix = identitymatrix;
1959 GL_ActiveTexture(unitnum);
1960 qglMatrixMode(GL_TEXTURE);CHECKGLERROR
1961 qglLoadIdentity();CHECKGLERROR
1962 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
1964 if (gl_combine.integer)
1966 // GL_ARB_texture_env_combine
1967 if (unit->combinergb != GL_MODULATE)
1969 unit->combinergb = GL_MODULATE;
1970 GL_ActiveTexture(unitnum);
1971 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
1973 if (unit->combinealpha != GL_MODULATE)
1975 unit->combinealpha = GL_MODULATE;
1976 GL_ActiveTexture(unitnum);
1977 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
1979 if (unit->rgbscale != 1)
1981 GL_ActiveTexture(unitnum);
1982 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = 1));CHECKGLERROR
1984 if (unit->alphascale != 1)
1986 GL_ActiveTexture(unitnum);
1987 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = 1));CHECKGLERROR
1993 if (unit->combinergb != GL_MODULATE)
1995 unit->combinergb = GL_MODULATE;
1996 GL_ActiveTexture(unitnum);
1997 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR