5 #include "cl_collision.h"
7 cvar_t gl_mesh_drawrangeelements = {0, "gl_mesh_drawrangeelements", "1"};
8 cvar_t gl_mesh_testarrayelement = {0, "gl_mesh_testarrayelement", "0"};
9 cvar_t gl_mesh_testmanualfeeding = {0, "gl_mesh_testmanualfeeding", "0"};
10 cvar_t gl_delayfinish = {CVAR_SAVE, "gl_delayfinish", "0"};
11 cvar_t gl_paranoid = {0, "gl_paranoid", "0"};
12 cvar_t gl_printcheckerror = {0, "gl_printcheckerror", "0"};
14 cvar_t r_render = {0, "r_render", "1"};
15 cvar_t gl_dither = {CVAR_SAVE, "gl_dither", "1"}; // whether or not to use dithering
16 cvar_t gl_lockarrays = {0, "gl_lockarrays", "1"};
18 int gl_maxdrawrangeelementsvertices;
19 int gl_maxdrawrangeelementsindices;
24 void GL_PrintError(int errornumber, char *filename, int linenumber)
28 #ifdef GL_INVALID_ENUM
30 Con_Printf("GL_INVALID_ENUM at %s:%i\n", filename, linenumber);
33 #ifdef GL_INVALID_VALUE
34 case GL_INVALID_VALUE:
35 Con_Printf("GL_INVALID_VALUE at %s:%i\n", filename, linenumber);
38 #ifdef GL_INVALID_OPERATION
39 case GL_INVALID_OPERATION:
40 Con_Printf("GL_INVALID_OPERATION at %s:%i\n", filename, linenumber);
43 #ifdef GL_STACK_OVERFLOW
44 case GL_STACK_OVERFLOW:
45 Con_Printf("GL_STACK_OVERFLOW at %s:%i\n", filename, linenumber);
48 #ifdef GL_STACK_UNDERFLOW
49 case GL_STACK_UNDERFLOW:
50 Con_Printf("GL_STACK_UNDERFLOW at %s:%i\n", filename, linenumber);
53 #ifdef GL_OUT_OF_MEMORY
54 case GL_OUT_OF_MEMORY:
55 Con_Printf("GL_OUT_OF_MEMORY at %s:%i\n", filename, linenumber);
58 #ifdef GL_TABLE_TOO_LARGE
59 case GL_TABLE_TOO_LARGE:
60 Con_Printf("GL_TABLE_TOO_LARGE at %s:%i\n", filename, linenumber);
64 Con_Printf("GL UNKNOWN (%i) at %s:%i\n", errornumber, filename, linenumber);
70 #define BACKENDACTIVECHECK if (!backendactive) Sys_Error("GL backend function called when backend is not active\n");
72 int c_meshs, c_meshelements;
74 void SCR_ScreenShot_f (void);
76 static matrix4x4_t backend_viewmatrix;
77 static matrix4x4_t backend_modelmatrix;
78 static matrix4x4_t backend_modelviewmatrix;
79 static matrix4x4_t backend_glmodelviewmatrix;
80 static matrix4x4_t backend_projectmatrix;
82 static int backendunits, backendactive;
83 static mempool_t *gl_backend_mempool;
86 note: here's strip order for a terrain row:
93 A0B, 01B, B1C, 12C, C2D, 23D, D3E, 34E
95 *elements++ = i + row;
97 *elements++ = i + row + 1;
100 *elements++ = i + row + 1;
103 for (y = 0;y < rows - 1;y++)
105 for (x = 0;x < columns - 1;x++)
108 *elements++ = i + columns;
110 *elements++ = i + columns + 1;
113 *elements++ = i + columns + 1;
124 for (y = 0;y < rows - 1;y++)
126 for (x = 0;x < columns - 1;x++)
130 *elements++ = i + columns;
131 *elements++ = i + columns + 1;
132 *elements++ = i + columns;
133 *elements++ = i + columns + 1;
139 int polygonelements[768];
141 static void R_Mesh_CacheArray_Startup(void);
142 static void R_Mesh_CacheArray_Shutdown(void);
143 void GL_Backend_AllocArrays(void)
145 if (!gl_backend_mempool)
146 gl_backend_mempool = Mem_AllocPool("GL_Backend");
147 R_Mesh_CacheArray_Startup();
150 void GL_Backend_FreeArrays(void)
152 R_Mesh_CacheArray_Shutdown();
153 Mem_FreePool(&gl_backend_mempool);
156 static void gl_backend_start(void)
158 Con_DPrint("OpenGL Backend started\n");
159 if (qglDrawRangeElements != NULL)
162 qglGetIntegerv(GL_MAX_ELEMENTS_VERTICES, &gl_maxdrawrangeelementsvertices);
164 qglGetIntegerv(GL_MAX_ELEMENTS_INDICES, &gl_maxdrawrangeelementsindices);
166 Con_DPrintf("glDrawRangeElements detected (max vertices %i, max indices %i)\n", gl_maxdrawrangeelementsvertices, gl_maxdrawrangeelementsindices);
169 backendunits = min(MAX_TEXTUREUNITS, gl_textureunits);
171 GL_Backend_AllocArrays();
173 backendactive = true;
176 static void gl_backend_shutdown(void)
179 backendactive = false;
181 Con_DPrint("OpenGL Backend shutting down\n");
183 GL_Backend_FreeArrays();
186 static void gl_backend_newmap(void)
190 cvar_t scr_zoomwindow = {CVAR_SAVE, "scr_zoomwindow", "0"};
191 cvar_t scr_zoomwindow_viewsizex = {CVAR_SAVE, "scr_zoomwindow_viewsizex", "20"};
192 cvar_t scr_zoomwindow_viewsizey = {CVAR_SAVE, "scr_zoomwindow_viewsizey", "20"};
193 cvar_t scr_zoomwindow_fov = {CVAR_SAVE, "scr_zoomwindow_fov", "20"};
195 void gl_backend_init(void)
199 for (i = 0;i < POLYGONELEMENTS_MAXPOINTS - 2;i++)
201 polygonelements[i * 3 + 0] = 0;
202 polygonelements[i * 3 + 1] = i + 1;
203 polygonelements[i * 3 + 2] = i + 2;
206 Cvar_RegisterVariable(&r_render);
207 Cvar_RegisterVariable(&gl_dither);
208 Cvar_RegisterVariable(&gl_lockarrays);
209 Cvar_RegisterVariable(&gl_delayfinish);
210 Cvar_RegisterVariable(&gl_paranoid);
211 Cvar_RegisterVariable(&gl_printcheckerror);
213 Cvar_SetValue("r_render", 0);
216 Cvar_RegisterVariable(&gl_mesh_drawrangeelements);
217 Cvar_RegisterVariable(&gl_mesh_testarrayelement);
218 Cvar_RegisterVariable(&gl_mesh_testmanualfeeding);
220 Cvar_RegisterVariable(&scr_zoomwindow);
221 Cvar_RegisterVariable(&scr_zoomwindow_viewsizex);
222 Cvar_RegisterVariable(&scr_zoomwindow_viewsizey);
223 Cvar_RegisterVariable(&scr_zoomwindow_fov);
225 R_RegisterModule("GL_Backend", gl_backend_start, gl_backend_shutdown, gl_backend_newmap);
228 void GL_SetupView_Orientation_Identity (void)
230 Matrix4x4_CreateIdentity(&backend_viewmatrix);
231 memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
234 void GL_SetupView_Orientation_FromEntity(matrix4x4_t *matrix)
236 matrix4x4_t tempmatrix, basematrix;
237 Matrix4x4_Invert_Simple(&tempmatrix, matrix);
238 Matrix4x4_CreateRotate(&basematrix, -90, 1, 0, 0);
239 Matrix4x4_ConcatRotate(&basematrix, 90, 0, 0, 1);
240 Matrix4x4_Concat(&backend_viewmatrix, &basematrix, &tempmatrix);
241 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[2], 1, 0, 0);
242 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[0], 0, 1, 0);
243 //Matrix4x4_ConcatRotate(&backend_viewmatrix, -angles[1], 0, 0, 1);
244 //Matrix4x4_ConcatTranslate(&backend_viewmatrix, -origin[0], -origin[1], -origin[2]);
245 memset(&backend_modelmatrix, 0, sizeof(backend_modelmatrix));
248 void GL_SetupView_Mode_Perspective (double fovx, double fovy, double zNear, double zFar)
252 if (!r_render.integer)
256 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
257 qglLoadIdentity();CHECKGLERROR
259 xmax = zNear * tan(fovx * M_PI / 360.0);
260 ymax = zNear * tan(fovy * M_PI / 360.0);
262 qglFrustum(-xmax, xmax, -ymax, ymax, zNear, zFar);CHECKGLERROR
263 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
264 GL_SetupView_Orientation_Identity();
267 void GL_SetupView_Mode_PerspectiveInfiniteFarClip (double fovx, double fovy, double zNear)
271 if (!r_render.integer)
275 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
276 qglLoadIdentity();CHECKGLERROR
278 nudge = 1.0 - 1.0 / (1<<23);
279 m[ 0] = 1.0 / tan(fovx * M_PI / 360.0);
284 m[ 5] = 1.0 / tan(fovy * M_PI / 360.0);
293 m[14] = -2 * zNear * nudge;
296 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
297 GL_SetupView_Orientation_Identity();
298 backend_projectmatrix.m[0][0] = m[0];
299 backend_projectmatrix.m[1][0] = m[1];
300 backend_projectmatrix.m[2][0] = m[2];
301 backend_projectmatrix.m[3][0] = m[3];
302 backend_projectmatrix.m[0][1] = m[4];
303 backend_projectmatrix.m[1][1] = m[5];
304 backend_projectmatrix.m[2][1] = m[6];
305 backend_projectmatrix.m[3][1] = m[7];
306 backend_projectmatrix.m[0][2] = m[8];
307 backend_projectmatrix.m[1][2] = m[9];
308 backend_projectmatrix.m[2][2] = m[10];
309 backend_projectmatrix.m[3][2] = m[11];
310 backend_projectmatrix.m[0][3] = m[12];
311 backend_projectmatrix.m[1][3] = m[13];
312 backend_projectmatrix.m[2][3] = m[14];
313 backend_projectmatrix.m[3][3] = m[15];
316 void GL_SetupView_Mode_Ortho (double x1, double y1, double x2, double y2, double zNear, double zFar)
318 if (!r_render.integer)
322 qglMatrixMode(GL_PROJECTION);CHECKGLERROR
323 qglLoadIdentity();CHECKGLERROR
324 qglOrtho(x1, x2, y2, y1, zNear, zFar);
325 qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
326 GL_SetupView_Orientation_Identity();
329 typedef struct gltextureunit_s
331 int t1d, t2d, t3d, tcubemap;
334 const void *pointer_texcoord;
335 float rgbscale, alphascale;
336 int combinergb, combinealpha;
337 // FIXME: add more combine stuff
348 int colormask; // stored as bottom 4 bits: r g b a (3 2 1 0 order)
353 gltextureunit_t units[MAX_TEXTUREUNITS];
357 const void *pointer_vertex;
358 const void *pointer_color;
362 void GL_SetupTextureState(void)
365 gltextureunit_t *unit;
367 gl_state.clientunit = -1;
368 for (i = 0;i < backendunits;i++)
371 GL_ClientActiveTexture(i);
372 unit = gl_state.units + i;
377 unit->pointer_texcoord = NULL;
379 unit->alphascale = 1;
380 unit->combinergb = GL_MODULATE;
381 unit->combinealpha = GL_MODULATE;
383 qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), NULL);CHECKGLERROR
384 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
386 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
387 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
390 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
392 if (gl_texturecubemap)
394 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
396 if (gl_combine.integer)
398 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);CHECKGLERROR
399 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);CHECKGLERROR
400 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);CHECKGLERROR
401 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
402 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_TEXTURE);CHECKGLERROR // for GL_INTERPOLATE_ARB mode
403 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
404 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);CHECKGLERROR
405 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB_ARB, GL_SRC_ALPHA);CHECKGLERROR
406 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_MODULATE);CHECKGLERROR
407 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);CHECKGLERROR
408 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB, GL_PREVIOUS_ARB);CHECKGLERROR
409 qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA_ARB, GL_CONSTANT_ARB);CHECKGLERROR
410 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
411 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
412 qglTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA_ARB, GL_SRC_ALPHA);CHECKGLERROR
413 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
414 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
418 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
423 void GL_Backend_ResetState(void)
425 memset(&gl_state, 0, sizeof(gl_state));
426 gl_state.depthtest = true;
427 gl_state.blendfunc1 = GL_ONE;
428 gl_state.blendfunc2 = GL_ZERO;
429 gl_state.blend = false;
430 gl_state.depthmask = GL_TRUE;
431 gl_state.colormask = 15;
432 gl_state.color4f[0] = gl_state.color4f[1] = gl_state.color4f[2] = gl_state.color4f[3] = 1;
433 gl_state.lockrange_first = 0;
434 gl_state.lockrange_count = 0;
435 gl_state.pointer_vertex = NULL;
436 gl_state.pointer_color = NULL;
440 qglColorMask(1, 1, 1, 1);
441 qglEnable(GL_CULL_FACE);CHECKGLERROR
442 qglCullFace(GL_FRONT);CHECKGLERROR
443 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
444 qglBlendFunc(gl_state.blendfunc1, gl_state.blendfunc2);CHECKGLERROR
445 qglDisable(GL_BLEND);CHECKGLERROR
446 qglDepthMask(gl_state.depthmask);CHECKGLERROR
448 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), NULL);CHECKGLERROR
449 qglEnableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
451 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), NULL);CHECKGLERROR
452 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
454 GL_ColorPointer(NULL);
455 GL_Color(0, 0, 0, 0);
456 GL_Color(1, 1, 1, 1);
458 GL_SetupTextureState();
461 void GL_ActiveTexture(int num)
463 if (gl_state.unit != num)
466 if (qglActiveTexture)
468 qglActiveTexture(GL_TEXTURE0_ARB + gl_state.unit);
474 void GL_ClientActiveTexture(int num)
476 if (gl_state.clientunit != num)
478 gl_state.clientunit = num;
479 if (qglActiveTexture)
481 qglClientActiveTexture(GL_TEXTURE0_ARB + gl_state.clientunit);
487 void GL_BlendFunc(int blendfunc1, int blendfunc2)
489 if (gl_state.blendfunc1 != blendfunc1 || gl_state.blendfunc2 != blendfunc2)
493 qglBlendFunc(gl_state.blendfunc1 = blendfunc1, gl_state.blendfunc2 = blendfunc2);CHECKGLERROR
494 if (gl_state.blendfunc2 == GL_ZERO)
496 if (gl_state.blendfunc1 == GL_ONE)
501 qglDisable(GL_BLEND);CHECKGLERROR
509 qglEnable(GL_BLEND);CHECKGLERROR
518 qglEnable(GL_BLEND);CHECKGLERROR
524 void GL_DepthMask(int state)
526 if (gl_state.depthmask != state)
530 qglDepthMask(gl_state.depthmask = state);CHECKGLERROR
534 void GL_DepthTest(int state)
536 if (gl_state.depthtest != state)
540 gl_state.depthtest = state;
541 if (gl_state.depthtest)
543 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
547 qglDisable(GL_DEPTH_TEST);CHECKGLERROR
552 void GL_ColorMask(int r, int g, int b, int a)
554 int state = r*8 + g*4 + b*2 + a*1;
555 if (gl_state.colormask != state)
559 gl_state.colormask = state;
560 qglColorMask((GLboolean)r, (GLboolean)g, (GLboolean)b, (GLboolean)a);CHECKGLERROR
564 void GL_VertexPointer(const float *p)
566 if (gl_state.pointer_vertex != p)
568 gl_state.pointer_vertex = p;
570 qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), gl_state.pointer_vertex);
575 void GL_ColorPointer(const float *p)
577 if (gl_state.pointer_color != p)
582 if (!gl_state.pointer_color)
584 qglEnableClientState(GL_COLOR_ARRAY);
589 qglDisableClientState(GL_COLOR_ARRAY);
591 // when color array is on the glColor gets trashed, set it again
592 qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);
595 gl_state.pointer_color = p;
596 qglColorPointer(4, GL_FLOAT, sizeof(float[4]), gl_state.pointer_color);
601 void GL_Color(float cr, float cg, float cb, float ca)
603 if (gl_state.pointer_color || gl_state.color4f[0] != cr || gl_state.color4f[1] != cg || gl_state.color4f[2] != cb || gl_state.color4f[3] != ca)
607 gl_state.color4f[0] = cr;
608 gl_state.color4f[1] = cg;
609 gl_state.color4f[2] = cb;
610 gl_state.color4f[3] = ca;
612 qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);
617 void GL_ShowTrisColor(float cr, float cg, float cb, float ca)
621 r_showtrispass = false;
622 GL_Color(cr * r_showtris.value, cg * r_showtris.value, cb * r_showtris.value, ca);
623 r_showtrispass = true;
627 void GL_LockArrays(int first, int count)
629 if (gl_state.lockrange_count != count || gl_state.lockrange_first != first)
631 if (gl_state.lockrange_count)
633 gl_state.lockrange_count = 0;
635 qglUnlockArraysEXT();
638 if (count && gl_supportslockarrays && gl_lockarrays.integer)
640 gl_state.lockrange_first = first;
641 gl_state.lockrange_count = count;
643 qglLockArraysEXT(first, count);
649 void GL_Scissor (int x, int y, int width, int height)
652 qglScissor(x, vid.realheight - (y + height),width,height);
656 void GL_ScissorTest(int state)
658 if(gl_state.scissortest == state)
662 if((gl_state.scissortest = state))
663 qglEnable(GL_SCISSOR_TEST);
665 qglDisable(GL_SCISSOR_TEST);
669 void GL_Clear(int mask)
673 qglClear(mask);CHECKGLERROR
676 void GL_TransformToScreen(const vec4_t in, vec4_t out)
680 Matrix4x4_Transform4 (&backend_viewmatrix, in, temp);
681 Matrix4x4_Transform4 (&backend_projectmatrix, temp, out);
683 out[0] = r_view_x + (out[0] * iw + 1.0f) * r_view_width * 0.5f;
684 out[1] = r_view_y + (out[1] * iw + 1.0f) * r_view_height * 0.5f;
685 out[2] = out[2] * iw;
688 // called at beginning of frame
689 void R_Mesh_Start(void)
693 GL_Backend_ResetState();
696 int gl_backend_rebindtextures;
698 void GL_Backend_RenumberElements(int *out, int count, const int *in, int offset)
703 for (i = 0;i < count;i++)
704 *out++ = *in++ + offset;
707 memcpy(out, in, sizeof(*out) * count);
710 // renders triangles using vertices from the active arrays
711 int paranoidblah = 0;
712 void R_Mesh_Draw(int numverts, int numtriangles, const int *elements)
714 int numelements = numtriangles * 3;
715 if (numverts == 0 || numtriangles == 0)
717 Con_Printf("R_Mesh_Draw(%d, %d, %08p);\n", numverts, numtriangles, elements);
722 R_Mesh_Draw_ShowTris(numverts, numtriangles, elements);
726 c_meshelements += numelements;
728 if (r_render.integer)
730 if (gl_paranoid.integer)
734 if (!qglIsEnabled(GL_VERTEX_ARRAY))
735 Con_Print("R_Mesh_Draw: vertex array not enabled\n");
736 for (j = 0, size = numverts * (int)sizeof(float[3]), p = gl_state.pointer_vertex;j < size;j += sizeof(int), p++)
738 if (gl_state.pointer_color)
740 if (!qglIsEnabled(GL_COLOR_ARRAY))
741 Con_Print("R_Mesh_Draw: color array set but not enabled\n");
742 for (j = 0, size = numverts * (int)sizeof(float[4]), p = gl_state.pointer_color;j < size;j += sizeof(int), p++)
745 for (i = 0;i < backendunits;i++)
747 if (gl_state.units[i].t1d || gl_state.units[i].t2d || gl_state.units[i].t3d || gl_state.units[i].tcubemap || gl_state.units[i].arrayenabled)
749 if (gl_state.units[i].arrayenabled && !(gl_state.units[i].t1d || gl_state.units[i].t2d || gl_state.units[i].t3d || gl_state.units[i].tcubemap))
750 Con_Print("R_Mesh_Draw: array enabled but no texture bound\n");
752 if (!qglIsEnabled(GL_TEXTURE_COORD_ARRAY))
753 Con_Print("R_Mesh_Draw: texcoord array set but not enabled\n");
754 for (j = 0, size = numverts * ((gl_state.units[i].t3d || gl_state.units[i].tcubemap) ? (int)sizeof(float[3]) : (int)sizeof(float[2])), p = gl_state.units[i].pointer_texcoord;j < size;j += sizeof(int), p++)
758 for (i = 0;i < numtriangles * 3;i++)
760 if (elements[i] < 0 || elements[i] >= numverts)
762 Con_Printf("R_Mesh_Draw: invalid vertex index %i (outside range 0 - %i) in elements list\n", elements[i], numverts);
768 GL_LockArrays(0, numverts);
770 if (gl_mesh_testmanualfeeding.integer)
774 qglBegin(GL_TRIANGLES);
775 for (i = 0;i < numtriangles * 3;i++)
777 for (j = 0;j < backendunits;j++)
779 if (gl_state.units[j].pointer_texcoord)
781 if (backendunits > 1)
783 if (gl_state.units[j].t3d || gl_state.units[j].tcubemap)
785 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 3;
786 qglMultiTexCoord3f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2]);
790 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 2;
791 qglMultiTexCoord2f(GL_TEXTURE0_ARB + j, p[0], p[1]);
796 if (gl_state.units[j].t3d || gl_state.units[j].tcubemap)
798 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 3;
799 qglTexCoord3f(p[0], p[1], p[2]);
803 p = ((const GLfloat *)(gl_state.units[j].pointer_texcoord)) + elements[i] * 2;
804 qglTexCoord2f(p[0], p[1]);
809 if (gl_state.pointer_color)
811 p = ((const GLfloat *)(gl_state.pointer_color)) + elements[i] * 4;
812 qglColor4f(p[0], p[1], p[2], p[3]);
814 p = ((const GLfloat *)(gl_state.pointer_vertex)) + elements[i] * 3;
815 qglVertex3f(p[0], p[1], p[2]);
820 else if (gl_mesh_testarrayelement.integer)
823 qglBegin(GL_TRIANGLES);
824 for (i = 0;i < numtriangles * 3;i++)
826 qglArrayElement(elements[i]);
831 else if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
833 qglDrawRangeElements(GL_TRIANGLES, 0, numverts, numelements, GL_UNSIGNED_INT, elements);CHECKGLERROR
837 qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, elements);CHECKGLERROR
845 // restores backend state, used when done with 3D rendering
846 void R_Mesh_Finish(void)
854 for (i = backendunits - 1;i >= 0;i--)
856 if (qglActiveTexture)
857 qglActiveTexture(GL_TEXTURE0_ARB + i);CHECKGLERROR
858 if (qglClientActiveTexture)
859 qglClientActiveTexture(GL_TEXTURE0_ARB + i);CHECKGLERROR
860 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
861 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
862 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
865 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
867 if (gl_texturecubemap)
869 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
871 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
872 if (gl_combine.integer)
874 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 1);CHECKGLERROR
875 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, 1);CHECKGLERROR
878 qglDisableClientState(GL_COLOR_ARRAY);CHECKGLERROR
879 qglDisableClientState(GL_VERTEX_ARRAY);CHECKGLERROR
881 qglDisable(GL_BLEND);CHECKGLERROR
882 qglEnable(GL_DEPTH_TEST);CHECKGLERROR
883 qglDepthMask(GL_TRUE);CHECKGLERROR
884 qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);CHECKGLERROR
887 void R_Mesh_Matrix(const matrix4x4_t *matrix)
889 if (memcmp(matrix, &backend_modelmatrix, sizeof(matrix4x4_t)))
891 backend_modelmatrix = *matrix;
892 Matrix4x4_Concat(&backend_modelviewmatrix, &backend_viewmatrix, matrix);
893 Matrix4x4_Transpose(&backend_glmodelviewmatrix, &backend_modelviewmatrix);
894 qglLoadMatrixf(&backend_glmodelviewmatrix.m[0][0]);
898 void R_Mesh_TextureMatrix(int unitnumber, const matrix4x4_t *matrix)
900 if (memcmp(&gl_state.units[unitnumber].matrix, matrix, sizeof(matrix4x4_t)))
902 matrix4x4_t tempmatrix;
903 gl_state.units[unitnumber].matrix = *matrix;
904 Matrix4x4_Transpose(&tempmatrix, &gl_state.units[unitnumber].matrix);
905 qglMatrixMode(GL_TEXTURE);
906 GL_ActiveTexture(unitnumber);
907 qglLoadMatrixf(&tempmatrix.m[0][0]);
908 qglMatrixMode(GL_MODELVIEW);
912 void R_Mesh_State_Texture(const rmeshstate_t *m)
914 int i, combinergb, combinealpha, scale, arrayis3d;
915 gltextureunit_t *unit;
919 if (gl_backend_rebindtextures)
921 gl_backend_rebindtextures = false;
922 GL_SetupTextureState();
927 for (i = 0, unit = gl_state.units;i < backendunits;i++, unit++)
929 if (unit->t1d != m->tex1d[i])
935 qglEnable(GL_TEXTURE_1D);CHECKGLERROR
940 qglDisable(GL_TEXTURE_1D);CHECKGLERROR
942 qglBindTexture(GL_TEXTURE_1D, (unit->t1d = m->tex1d[i]));CHECKGLERROR
944 if (unit->t2d != m->tex[i])
950 qglEnable(GL_TEXTURE_2D);CHECKGLERROR
955 qglDisable(GL_TEXTURE_2D);CHECKGLERROR
957 qglBindTexture(GL_TEXTURE_2D, (unit->t2d = m->tex[i]));CHECKGLERROR
959 if (unit->t3d != m->tex3d[i])
965 qglEnable(GL_TEXTURE_3D);CHECKGLERROR
970 qglDisable(GL_TEXTURE_3D);CHECKGLERROR
972 qglBindTexture(GL_TEXTURE_3D, (unit->t3d = m->tex3d[i]));CHECKGLERROR
974 if (unit->tcubemap != m->texcubemap[i])
977 if (m->texcubemap[i])
979 if (unit->tcubemap == 0)
980 qglEnable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
985 qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
987 qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, (unit->tcubemap = m->texcubemap[i]));CHECKGLERROR
989 combinergb = m->texcombinergb[i];
991 combinergb = GL_MODULATE;
992 if (unit->combinergb != combinergb)
995 unit->combinergb = combinergb;
996 if (gl_combine.integer)
998 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
1002 qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combinergb);CHECKGLERROR
1005 combinealpha = m->texcombinealpha[i];
1007 combinealpha = GL_MODULATE;
1008 if (unit->combinealpha != combinealpha)
1010 GL_ActiveTexture(i);
1011 unit->combinealpha = combinealpha;
1012 if (gl_combine.integer)
1014 qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
1017 scale = max(m->texrgbscale[i], 1);
1018 if (unit->rgbscale != scale)
1020 GL_ActiveTexture(i);
1021 qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, (unit->rgbscale = scale));CHECKGLERROR
1023 scale = max(m->texalphascale[i], 1);
1024 if (unit->alphascale != scale)
1026 GL_ActiveTexture(i);
1027 qglTexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, (unit->alphascale = scale));CHECKGLERROR
1029 arrayis3d = unit->t3d || unit->tcubemap;
1030 if (unit->pointer_texcoord != m->pointer_texcoord[i] || unit->arrayis3d != arrayis3d)
1032 GL_ClientActiveTexture(i);
1033 if (m->pointer_texcoord[i])
1035 if (!unit->arrayenabled)
1037 unit->arrayenabled = true;
1038 qglEnableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1043 if (unit->arrayenabled)
1045 unit->arrayenabled = false;
1046 qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
1049 unit->pointer_texcoord = m->pointer_texcoord[i];
1050 unit->arrayis3d = arrayis3d;
1051 if (unit->arrayis3d)
1052 qglTexCoordPointer(3, GL_FLOAT, sizeof(float[3]), unit->pointer_texcoord);
1054 qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), unit->pointer_texcoord);
1060 void R_Mesh_Draw_ShowTris(int numverts, int numtriangles, const int *elements)
1063 for (;numtriangles;numtriangles--, elements += 3)
1065 qglArrayElement(elements[0]);qglArrayElement(elements[1]);
1066 qglArrayElement(elements[1]);qglArrayElement(elements[2]);
1067 qglArrayElement(elements[2]);qglArrayElement(elements[0]);
1074 ==============================================================================
1078 ==============================================================================
1081 qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height, qboolean jpeg)
1086 if (!r_render.integer)
1089 buffer = Mem_Alloc(tempmempool, width*height*3);
1090 qglReadPixels (x, y, width, height, GL_RGB, GL_UNSIGNED_BYTE, buffer);
1094 ret = JPEG_SaveImage_preflipped (filename, width, height, buffer);
1096 ret = Image_WriteTGARGB_preflipped (filename, width, height, buffer);
1102 //=============================================================================
1104 void R_ClearScreen(void)
1106 if (r_render.integer)
1109 qglClearColor(0,0,0,0);CHECKGLERROR
1110 qglClearDepth(1);CHECKGLERROR
1113 // LordHavoc: we use a stencil centered around 128 instead of 0,
1114 // to avoid clamping interfering with strange shadow volume
1116 qglClearStencil(128);CHECKGLERROR
1119 GL_Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | (gl_stencil ? GL_STENCIL_BUFFER_BIT : 0));
1120 // set dithering mode
1121 if (gl_dither.integer)
1123 qglEnable(GL_DITHER);CHECKGLERROR
1127 qglDisable(GL_DITHER);CHECKGLERROR
1133 ====================
1135 ====================
1137 float CalcFov (float fov_x, float width, float height)
1139 // calculate vision size and alter by aspect, then convert back to angle
1140 return atan (height / (width / tan(fov_x/360*M_PI))) * 360 / M_PI;
1147 This is called every frame, and can also be called explicitly to flush
1151 void SCR_UpdateScreen (void)
1153 if (gl_delayfinish.integer)
1156 R_TimeReport("meshfinish");
1158 R_TimeReport("finish");
1163 if (r_textureunits.integer > gl_textureunits)
1164 Cvar_SetValueQuick(&r_textureunits, gl_textureunits);
1165 if (r_textureunits.integer < 1)
1166 Cvar_SetValueQuick(&r_textureunits, 1);
1168 if (gl_combine.integer && (!gl_combine_extension || r_textureunits.integer < 2))
1169 Cvar_SetValueQuick(&gl_combine, 0);
1172 R_TimeReport("setup");
1176 R_TimeReport("clear");
1178 if (scr_conlines < vid.conheight && cls.signon == SIGNONS)
1184 if (scr_viewsize.value < 30)
1185 Cvar_Set ("viewsize","30");
1186 if (scr_viewsize.value > 120)
1187 Cvar_Set ("viewsize","120");
1189 // bound field of view
1190 if (scr_fov.value < 1)
1191 Cvar_Set ("fov","1");
1192 if (scr_fov.value > 170)
1193 Cvar_Set ("fov","170");
1195 // intermission is always full screen
1196 if (cl.intermission)
1203 if (scr_viewsize.value >= 120)
1204 sb_lines = 0; // no status bar at all
1205 else if (scr_viewsize.value >= 110)
1206 sb_lines = 24; // no inventory
1209 size = scr_viewsize.value * (1.0 / 100.0);
1210 size = min(size, 1);
1213 r_refdef.width = vid.realwidth * size;
1214 r_refdef.height = vid.realheight * size;
1215 r_refdef.x = (vid.realwidth - r_refdef.width)/2;
1216 r_refdef.y = (vid.realheight - r_refdef.height)/2;
1218 // LordHavoc: viewzoom (zoom in for sniper rifles, etc)
1219 r_refdef.fov_x = scr_fov.value * cl.viewzoom;
1220 r_refdef.fov_y = CalcFov (r_refdef.fov_x, r_refdef.width, r_refdef.height);
1224 Mod_CheckLoaded(cl.worldmodel);
1225 contents = CL_PointSuperContents(r_vieworigin);
1226 if (contents & SUPERCONTENTS_LIQUIDSMASK)
1228 r_refdef.fov_x *= (sin(cl.time * 4.7) * 0.015 + 0.985);
1229 r_refdef.fov_y *= (sin(cl.time * 3.0) * 0.015 + 0.985);
1235 if (scr_zoomwindow.integer)
1237 float sizex = bound(10, scr_zoomwindow_viewsizex.value, 100) / 100.0;
1238 float sizey = bound(10, scr_zoomwindow_viewsizey.value, 100) / 100.0;
1239 r_refdef.width = vid.realwidth * sizex;
1240 r_refdef.height = vid.realheight * sizey;
1241 r_refdef.x = (vid.realwidth - r_refdef.width)/2;
1243 r_refdef.fov_x = scr_zoomwindow_fov.value;
1244 r_refdef.fov_y = CalcFov(r_refdef.fov_x, r_refdef.width, r_refdef.height);
1254 r_showtrispass = false;
1255 else if (r_showtris.value > 0)
1258 GL_BlendFunc(GL_ONE, GL_ONE);
1259 GL_DepthTest(GL_FALSE);
1260 GL_DepthMask(GL_FALSE);
1261 memset(&m, 0, sizeof(m));
1262 R_Mesh_State_Texture(&m);
1263 r_showtrispass = true;
1264 GL_ShowTrisColor(0.2,0.2,0.2,1);
1268 if (gl_delayfinish.integer)
1270 // tell driver to commit it's partially full geometry queue to the rendering queue
1271 // (this doesn't wait for the commands themselves to complete)
1277 R_TimeReport("meshfinish");
1279 R_TimeReport("finish");
1284 //===========================================================================
1285 // dynamic vertex array buffer subsystem
1286 //===========================================================================
1288 float varray_vertex3f[65536*3];
1289 float varray_color4f[65536*4];
1290 float varray_texcoord2f[4][65536*2];
1291 float varray_texcoord3f[4][65536*3];
1292 float varray_normal3f[65536*3];
1293 int earray_element3i[65536];
1295 //===========================================================================
1296 // vertex array caching subsystem
1297 //===========================================================================
1299 typedef struct rcachearraylink_s
1301 struct rcachearraylink_s *next, *prev;
1302 struct rcachearrayitem_s *data;
1306 typedef struct rcachearrayitem_s
1308 // the original request structure
1309 rcachearrayrequest_t request;
1312 // offset into r_mesh_rcachedata
1314 // for linking this into the sequential list
1315 rcachearraylink_t sequentiallink;
1316 // for linking this into the lookup list
1317 rcachearraylink_t hashlink;
1321 #define RCACHEARRAY_HASHSIZE 65536
1322 #define RCACHEARRAY_ITEMS 4096
1323 #define RCACHEARRAY_DEFAULTSIZE (4 << 20)
1325 // all active items are linked into this chain in sorted order
1326 static rcachearraylink_t r_mesh_rcachesequentialchain;
1327 // all inactive items are linked into this chain in unknown order
1328 static rcachearraylink_t r_mesh_rcachefreechain;
1329 // all active items are also linked into these chains (using their hashlink)
1330 static rcachearraylink_t r_mesh_rcachechain[RCACHEARRAY_HASHSIZE];
1332 // all items are stored here, whether active or inactive
1333 static rcachearrayitem_t r_mesh_rcacheitems[RCACHEARRAY_ITEMS];
1335 // size of data buffer
1336 static int r_mesh_rcachedata_size = RCACHEARRAY_DEFAULTSIZE;
1338 static qbyte r_mesh_rcachedata[RCACHEARRAY_DEFAULTSIZE];
1341 static int r_mesh_rcachedata_offset;
1342 static rcachearraylink_t *r_mesh_rcachesequentialchain_current;
1344 static void R_Mesh_CacheArray_Startup(void)
1347 rcachearraylink_t *l;
1348 // prepare all the linked lists
1349 l = &r_mesh_rcachesequentialchain;l->next = l->prev = l;l->data = NULL;
1350 l = &r_mesh_rcachefreechain;l->next = l->prev = l;l->data = NULL;
1351 memset(&r_mesh_rcachechain, 0, sizeof(r_mesh_rcachechain));
1352 for (i = 0;i < RCACHEARRAY_HASHSIZE;i++)
1354 l = &r_mesh_rcachechain[i];
1355 l->next = l->prev = l;
1358 memset(&r_mesh_rcacheitems, 0, sizeof(r_mesh_rcacheitems));
1359 for (i = 0;i < RCACHEARRAY_ITEMS;i++)
1361 r_mesh_rcacheitems[i].hashlink.data = r_mesh_rcacheitems[i].sequentiallink.data = &r_mesh_rcacheitems[i];
1362 l = &r_mesh_rcacheitems[i].sequentiallink;
1363 l->next = &r_mesh_rcachefreechain;
1364 l->prev = l->next->prev;
1365 l->next->prev = l->prev->next = l;
1367 // clear other state
1368 r_mesh_rcachedata_offset = 0;
1369 r_mesh_rcachesequentialchain_current = &r_mesh_rcachesequentialchain;
1372 static void R_Mesh_CacheArray_Shutdown(void)
1377 static void R_Mesh_CacheArray_ValidateState(int num)
1379 rcachearraylink_t *l, *lhead;
1380 lhead = &r_mesh_rcachesequentialchain;
1381 if (r_mesh_rcachesequentialchain_current == lhead)
1383 for (l = lhead->next;l != lhead;l = l->next)
1384 if (r_mesh_rcachesequentialchain_current == l)
1386 Sys_Error("%i", num);
1390 int R_Mesh_CacheArray(rcachearrayrequest_t *r)
1392 rcachearraylink_t *l, *lhead, *lnext;
1393 rcachearrayitem_t *d;
1394 int hashindex, offset, offsetend;
1396 //R_Mesh_CacheArray_ValidateState(3);
1397 // calculate a hashindex to choose a cache chain
1399 hashindex = CRC_Block((void *)r, sizeof(*r)) % RCACHEARRAY_HASHSIZE;
1401 // is it already cached?
1402 for (lhead = &r_mesh_rcachechain[hashindex], l = lhead->next;l != lhead;l = l->next)
1404 if (!memcmp(&l->data->request, r, sizeof(l->data->request)))
1406 // we have it cached already
1407 r->data = r_mesh_rcachedata + l->data->offset;
1412 // we need to add a new cache item, this means finding a place for the new
1413 // data and making sure we have a free item available, lots of work...
1415 // check if buffer needs to wrap
1416 if (r_mesh_rcachedata_offset + r->data_size > r_mesh_rcachedata_size)
1419 if (r->data_size * 10 > r_mesh_rcachedata_size)
1421 // realloc whole cache
1424 // reset back to start
1425 r_mesh_rcachedata_offset = 0;
1426 r_mesh_rcachesequentialchain_current = &r_mesh_rcachesequentialchain;
1428 offset = r_mesh_rcachedata_offset;
1429 r_mesh_rcachedata_offset += r->data_size;
1430 offsetend = r_mesh_rcachedata_offset;
1431 //R_Mesh_CacheArray_ValidateState(4);
1436 for (lhead = &r_mesh_rcachesequentialchain, l = lhead->next, n = 0;l != lhead;l = l->next, n++);
1437 Con_Printf("R_Mesh_CacheArray: new data range %i:%i, %i items are already linked\n", offset, offsetend, n);
1441 // make room for the new data (remove old items)
1442 lhead = &r_mesh_rcachesequentialchain;
1443 l = r_mesh_rcachesequentialchain_current;
1446 while (l != lhead && l->data->offset < offsetend && l->data->offset + l->data->request.data_size > offset)
1448 //r_mesh_rcachesequentialchain_current = l;
1449 //R_Mesh_CacheArray_ValidateState(8);
1451 // if at the end of the chain, wrap around
1453 lnext = lnext->next;
1454 //r_mesh_rcachesequentialchain_current = lnext;
1455 //R_Mesh_CacheArray_ValidateState(10);
1457 // unlink from sequential chain
1458 l->next->prev = l->prev;
1459 l->prev->next = l->next;
1460 //R_Mesh_CacheArray_ValidateState(11);
1461 // link into free chain
1462 l->next = &r_mesh_rcachefreechain;
1463 l->prev = l->next->prev;
1464 l->next->prev = l->prev->next = l;
1465 //R_Mesh_CacheArray_ValidateState(12);
1467 l = &l->data->hashlink;
1468 // unlink from hash chain
1469 l->next->prev = l->prev;
1470 l->prev->next = l->next;
1473 //r_mesh_rcachesequentialchain_current = l;
1474 //R_Mesh_CacheArray_ValidateState(9);
1476 //r_mesh_rcachesequentialchain_current = l;
1477 //R_Mesh_CacheArray_ValidateState(5);
1478 // gobble an extra item if we have no free items available
1479 if (r_mesh_rcachefreechain.next == &r_mesh_rcachefreechain)
1483 // unlink from sequential chain
1484 l->next->prev = l->prev;
1485 l->prev->next = l->next;
1486 // link into free chain
1487 l->next = &r_mesh_rcachefreechain;
1488 l->prev = l->next->prev;
1489 l->next->prev = l->prev->next = l;
1491 l = &l->data->hashlink;
1492 // unlink from hash chain
1493 l->next->prev = l->prev;
1494 l->prev->next = l->next;
1498 r_mesh_rcachesequentialchain_current = l;
1499 //R_Mesh_CacheArray_ValidateState(6);
1501 // now take an item from the free chain
1502 l = r_mesh_rcachefreechain.next;
1508 l->next->prev = l->prev;
1509 l->prev->next = l->next;
1510 // relink to sequential
1511 l->next = r_mesh_rcachesequentialchain_current->prev;
1512 l->prev = l->next->prev;
1513 while (l->next->data && l->data && l->next->data->offset <= d->offset)
1516 l->next = l->next->next;
1517 l->prev = l->prev->next;
1519 while (l->prev->data && l->data && l->prev->data->offset >= d->offset)
1522 l->prev = l->prev->prev;
1523 l->next = l->next->prev;
1525 l->next->prev = l->prev->next = l;
1526 // also link into hash chain
1527 l = &l->data->hashlink;
1528 l->next = &r_mesh_rcachechain[hashindex];
1529 l->prev = l->next->prev;
1531 l->next->prev = l->prev->next = l;
1534 //r_mesh_rcachesequentialchain_current = d->sequentiallink.next;
1536 //R_Mesh_CacheArray_ValidateState(7);
1537 // and finally set the data pointer
1538 r->data = r_mesh_rcachedata + d->offset;
1539 // and tell the caller to fill the array