/* $Id: context.c,v 1.82 2000/09/05 20:28:06 brianp Exp $ */ /* * Mesa 3-D graphics library * Version: 3.3 * * Copyright (C) 1999-2000 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #ifdef PC_HEADER #include "all.h" #else #include "glheader.h" #include "accum.h" #include "alphabuf.h" #include "clip.h" #include "colortab.h" #include "context.h" #include "cva.h" #include "depth.h" #include "dlist.h" #include "eval.h" #include "enums.h" #include "extensions.h" #include "fog.h" #include "get.h" #include "glapi.h" #include "glapinoop.h" #include "glthread.h" #include "hash.h" #include "light.h" #include "macros.h" #include "matrix.h" #include "mem.h" #include "mmath.h" #include "pb.h" #include "pipeline.h" #include "shade.h" #include "simple_list.h" #include "stencil.h" #include "stages.h" #include "state.h" #include "translate.h" #include "teximage.h" #include "texobj.h" #include "texstate.h" #include "texture.h" #include "types.h" #include "varray.h" #include "vb.h" #include "vbcull.h" #include "vbrender.h" #include "vbxform.h" #include "vertices.h" #include "xform.h" #endif #if defined(TRACE) #include "Trace/tr_context.h" #include "Trace/tr_wrapper.h" #endif /**********************************************************************/ /***** Context and Thread management *****/ /**********************************************************************/ #if !defined(THREADS) struct immediate *_mesa_CurrentInput = NULL; #endif /**********************************************************************/ /***** GL Visual allocation/destruction *****/ /**********************************************************************/ /* * Allocate a new GLvisual object. * Input: rgbFlag - GL_TRUE=RGB(A) mode, GL_FALSE=Color Index mode * dbFlag - double buffering? * stereoFlag - stereo buffer? * depthBits - requested bits per depth buffer value * Any value in [0, 32] is acceptable but the actual * depth type will be GLushort or GLuint as needed. * stencilBits - requested minimum bits per stencil buffer value * accumBits - requested minimum bits per accum buffer component * indexBits - number of bits per pixel if rgbFlag==GL_FALSE * red/green/blue/alphaBits - number of bits per color component * in frame buffer for RGB(A) mode. * We always use 8 in core Mesa though. * Return: pointer to new GLvisual or NULL if requested parameters can't * be met. */ GLvisual * _mesa_create_visual( GLboolean rgbFlag, GLboolean dbFlag, GLboolean stereoFlag, GLint redBits, GLint greenBits, GLint blueBits, GLint alphaBits, GLint indexBits, GLint depthBits, GLint stencilBits, GLint accumRedBits, GLint accumGreenBits, GLint accumBlueBits, GLint accumAlphaBits, GLint numSamples ) { GLvisual *vis = (GLvisual *) CALLOC( sizeof(GLvisual) ); if (vis) { if (!_mesa_initialize_visual(vis, rgbFlag, dbFlag, stereoFlag, redBits, greenBits, blueBits, alphaBits, indexBits, depthBits, stencilBits, accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits, numSamples )) { FREE(vis); return NULL; } } return vis; } /* * Initialize the fields of the given GLvisual. * Input: see _mesa_create_visual() above. * Return: GL_TRUE = success * GL_FALSE = failure. */ GLboolean _mesa_initialize_visual( GLvisual *vis, GLboolean rgbFlag, GLboolean dbFlag, GLboolean stereoFlag, GLint redBits, GLint greenBits, GLint blueBits, GLint alphaBits, GLint indexBits, GLint depthBits, GLint stencilBits, GLint accumRedBits, GLint accumGreenBits, GLint accumBlueBits, GLint accumAlphaBits, GLint numSamples ) { assert(vis); /* This is to catch bad values from device drivers not updated for * Mesa 3.3. Some device drivers just passed 1. That's a REALLY * bad value now (a 1-bit depth buffer!?!). */ assert(depthBits == 0 || depthBits > 1); if (depthBits < 0 || depthBits > 32) { return GL_FALSE; } if (stencilBits < 0 || stencilBits > (GLint) (8 * sizeof(GLstencil))) { return GL_FALSE; } if (accumRedBits < 0 || accumRedBits > (GLint) (8 * sizeof(GLaccum))) { return GL_FALSE; } if (accumGreenBits < 0 || accumGreenBits > (GLint) (8 * sizeof(GLaccum))) { return GL_FALSE; } if (accumBlueBits < 0 || accumBlueBits > (GLint) (8 * sizeof(GLaccum))) { return GL_FALSE; } if (accumAlphaBits < 0 || accumAlphaBits > (GLint) (8 * sizeof(GLaccum))) { return GL_FALSE; } vis->RGBAflag = rgbFlag; vis->DBflag = dbFlag; vis->StereoFlag = stereoFlag; vis->RedBits = redBits; vis->GreenBits = greenBits; vis->BlueBits = blueBits; vis->AlphaBits = alphaBits; vis->IndexBits = indexBits; vis->DepthBits = depthBits; vis->AccumRedBits = (accumRedBits > 0) ? (8 * sizeof(GLaccum)) : 0; vis->AccumGreenBits = (accumGreenBits > 0) ? (8 * sizeof(GLaccum)) : 0; vis->AccumBlueBits = (accumBlueBits > 0) ? (8 * sizeof(GLaccum)) : 0; vis->AccumAlphaBits = (accumAlphaBits > 0) ? (8 * sizeof(GLaccum)) : 0; vis->StencilBits = (stencilBits > 0) ? (8 * sizeof(GLstencil)) : 0; if (depthBits == 0) { /* Special case. Even if we don't have a depth buffer we need * good values for DepthMax for Z vertex transformation purposes. */ vis->DepthMax = 1; vis->DepthMaxF = 1.0F; } else if (depthBits < 32) { vis->DepthMax = (1 << depthBits) - 1; vis->DepthMaxF = (GLfloat) vis->DepthMax; } else { /* Special case since shift values greater than or equal to the * number of bits in the left hand expression's type are * undefined. */ vis->DepthMax = 0xffffffff; vis->DepthMaxF = (GLfloat) vis->DepthMax; } return GL_TRUE; } /* This function should no longer be used. Use _mesa_create_visual() instead */ GLvisual * gl_create_visual( GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag, GLboolean stereoFlag, GLint depthBits, GLint stencilBits, GLint accumBits, GLint indexBits, GLint redBits, GLint greenBits, GLint blueBits, GLint alphaBits ) { (void) alphaFlag; return _mesa_create_visual(rgbFlag, dbFlag, stereoFlag, redBits, greenBits, blueBits, alphaBits, indexBits, depthBits, stencilBits, accumBits, accumBits, accumBits, accumBits, 0); } void _mesa_destroy_visual( GLvisual *vis ) { FREE(vis); } /* obsolete */ void gl_destroy_visual( GLvisual *vis ) { _mesa_destroy_visual(vis); } /**********************************************************************/ /***** GL Framebuffer allocation/destruction *****/ /**********************************************************************/ /* * Create a new framebuffer. A GLframebuffer is a struct which * encapsulates the depth, stencil and accum buffers and related * parameters. * Input: visual - a GLvisual pointer * softwareDepth - create/use a software depth buffer? * softwareStencil - create/use a software stencil buffer? * softwareAccum - create/use a software accum buffer? * softwareAlpha - create/use a software alpha buffer? * Return: pointer to new GLframebuffer struct or NULL if error. */ GLframebuffer * gl_create_framebuffer( GLvisual *visual, GLboolean softwareDepth, GLboolean softwareStencil, GLboolean softwareAccum, GLboolean softwareAlpha ) { GLframebuffer *buffer = CALLOC_STRUCT(gl_frame_buffer); assert(visual); if (buffer) { _mesa_initialize_framebuffer(buffer, visual, softwareDepth, softwareStencil, softwareAccum, softwareAlpha ); } return buffer; } /* * Initialize a GLframebuffer object. * Input: See gl_create_framebuffer() above. */ void _mesa_initialize_framebuffer( GLframebuffer *buffer, GLvisual *visual, GLboolean softwareDepth, GLboolean softwareStencil, GLboolean softwareAccum, GLboolean softwareAlpha ) { assert(buffer); assert(visual); /* sanity checks */ if (softwareDepth ) { assert(visual->DepthBits > 0); } if (softwareStencil) { assert(visual->StencilBits > 0); } if (softwareAccum) { assert(visual->RGBAflag); assert(visual->AccumRedBits > 0); assert(visual->AccumGreenBits > 0); assert(visual->AccumBlueBits > 0); } if (softwareAlpha) { assert(visual->RGBAflag); assert(visual->AlphaBits > 0); } buffer->Visual = visual; buffer->UseSoftwareDepthBuffer = softwareDepth; buffer->UseSoftwareStencilBuffer = softwareStencil; buffer->UseSoftwareAccumBuffer = softwareAccum; buffer->UseSoftwareAlphaBuffers = softwareAlpha; } /* * Free a framebuffer struct and its buffers. */ void gl_destroy_framebuffer( GLframebuffer *buffer ) { if (buffer) { if (buffer->DepthBuffer) { FREE( buffer->DepthBuffer ); } if (buffer->Accum) { FREE( buffer->Accum ); } if (buffer->Stencil) { FREE( buffer->Stencil ); } if (buffer->FrontLeftAlpha) { FREE( buffer->FrontLeftAlpha ); } if (buffer->BackLeftAlpha) { FREE( buffer->BackLeftAlpha ); } if (buffer->FrontRightAlpha) { FREE( buffer->FrontRightAlpha ); } if (buffer->BackRightAlpha) { FREE( buffer->BackRightAlpha ); } FREE(buffer); } } /**********************************************************************/ /***** Context allocation, initialization, destroying *****/ /**********************************************************************/ _glthread_DECLARE_STATIC_MUTEX(OneTimeLock); /* * This function just calls all the various one-time-init functions in Mesa. */ static void one_time_init( void ) { static GLboolean alreadyCalled = GL_FALSE; _glthread_LOCK_MUTEX(OneTimeLock); if (!alreadyCalled) { /* do some implementation tests */ assert( sizeof(GLbyte) == 1 ); assert( sizeof(GLshort) >= 2 ); assert( sizeof(GLint) >= 4 ); assert( sizeof(GLubyte) == 1 ); assert( sizeof(GLushort) >= 2 ); assert( sizeof(GLuint) >= 4 ); gl_init_clip(); gl_init_eval(); _mesa_init_fog(); _mesa_init_math(); gl_init_lists(); gl_init_shade(); gl_init_texture(); gl_init_transformation(); gl_init_translate(); gl_init_vbrender(); gl_init_vbxform(); gl_init_vertices(); if (getenv("MESA_DEBUG")) { _glapi_noop_enable_warnings(GL_TRUE); } else { _glapi_noop_enable_warnings(GL_FALSE); } #if defined(DEBUG) && defined(__DATE__) && defined(__TIME__) fprintf(stderr, "Mesa DEBUG build %s %s\n", __DATE__, __TIME__); #endif alreadyCalled = GL_TRUE; } _glthread_UNLOCK_MUTEX(OneTimeLock); } /* * Allocate and initialize a shared context state structure. */ static struct gl_shared_state * alloc_shared_state( void ) { GLuint d; struct gl_shared_state *ss; GLboolean outOfMemory; ss = CALLOC_STRUCT(gl_shared_state); if (!ss) return NULL; ss->DisplayList = _mesa_NewHashTable(); ss->TexObjects = _mesa_NewHashTable(); /* Default Texture objects */ outOfMemory = GL_FALSE; for (d = 1 ; d <= 3 ; d++) { ss->DefaultD[d] = gl_alloc_texture_object(ss, 0, d); if (!ss->DefaultD[d]) { outOfMemory = GL_TRUE; break; } ss->DefaultD[d]->RefCount++; /* don't free if not in use */ } ss->DefaultCubeMap = gl_alloc_texture_object(ss, 0, 6); if (!ss->DefaultCubeMap) { outOfMemory = GL_TRUE; } else { ss->DefaultCubeMap->RefCount++; } if (!ss->DisplayList || !ss->TexObjects || outOfMemory) { /* Ran out of memory at some point. Free everything and return NULL */ if (ss->DisplayList) _mesa_DeleteHashTable(ss->DisplayList); if (ss->TexObjects) _mesa_DeleteHashTable(ss->TexObjects); if (ss->DefaultD[1]) gl_free_texture_object(ss, ss->DefaultD[1]); if (ss->DefaultD[2]) gl_free_texture_object(ss, ss->DefaultD[2]); if (ss->DefaultD[3]) gl_free_texture_object(ss, ss->DefaultD[3]); if (ss->DefaultCubeMap) gl_free_texture_object(ss, ss->DefaultCubeMap); FREE(ss); return NULL; } else { return ss; } } /* * Deallocate a shared state context and all children structures. */ static void free_shared_state( GLcontext *ctx, struct gl_shared_state *ss ) { /* Free display lists */ while (1) { GLuint list = _mesa_HashFirstEntry(ss->DisplayList); if (list) { gl_destroy_list(ctx, list); } else { break; } } _mesa_DeleteHashTable(ss->DisplayList); /* Free texture objects */ while (ss->TexObjectList) { if (ctx->Driver.DeleteTexture) (*ctx->Driver.DeleteTexture)( ctx, ss->TexObjectList ); /* this function removes from linked list too! */ gl_free_texture_object(ss, ss->TexObjectList); } _mesa_DeleteHashTable(ss->TexObjects); FREE(ss); } /* * Initialize the nth light. Note that the defaults for light 0 are * different than the other lights. */ static void init_light( struct gl_light *l, GLuint n ) { make_empty_list( l ); ASSIGN_4V( l->Ambient, 0.0, 0.0, 0.0, 1.0 ); if (n==0) { ASSIGN_4V( l->Diffuse, 1.0, 1.0, 1.0, 1.0 ); ASSIGN_4V( l->Specular, 1.0, 1.0, 1.0, 1.0 ); } else { ASSIGN_4V( l->Diffuse, 0.0, 0.0, 0.0, 1.0 ); ASSIGN_4V( l->Specular, 0.0, 0.0, 0.0, 1.0 ); } ASSIGN_4V( l->EyePosition, 0.0, 0.0, 1.0, 0.0 ); ASSIGN_3V( l->EyeDirection, 0.0, 0.0, -1.0 ); l->SpotExponent = 0.0; gl_compute_spot_exp_table( l ); l->SpotCutoff = 180.0; l->CosCutoff = 0.0; /* KW: -ve values not admitted */ l->ConstantAttenuation = 1.0; l->LinearAttenuation = 0.0; l->QuadraticAttenuation = 0.0; l->Enabled = GL_FALSE; } static void init_lightmodel( struct gl_lightmodel *lm ) { ASSIGN_4V( lm->Ambient, 0.2, 0.2, 0.2, 1.0 ); lm->LocalViewer = GL_FALSE; lm->TwoSide = GL_FALSE; lm->ColorControl = GL_SINGLE_COLOR; } static void init_material( struct gl_material *m ) { ASSIGN_4V( m->Ambient, 0.2, 0.2, 0.2, 1.0 ); ASSIGN_4V( m->Diffuse, 0.8, 0.8, 0.8, 1.0 ); ASSIGN_4V( m->Specular, 0.0, 0.0, 0.0, 1.0 ); ASSIGN_4V( m->Emission, 0.0, 0.0, 0.0, 1.0 ); m->Shininess = 0.0; m->AmbientIndex = 0; m->DiffuseIndex = 1; m->SpecularIndex = 1; } static void init_texture_unit( GLcontext *ctx, GLuint unit ) { struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; texUnit->EnvMode = GL_MODULATE; texUnit->CombineModeRGB = GL_MODULATE; texUnit->CombineModeA = GL_MODULATE; texUnit->CombineSourceRGB[0] = GL_TEXTURE; texUnit->CombineSourceRGB[1] = GL_PREVIOUS_EXT; texUnit->CombineSourceRGB[2] = GL_CONSTANT_EXT; texUnit->CombineSourceA[0] = GL_TEXTURE; texUnit->CombineSourceA[1] = GL_PREVIOUS_EXT; texUnit->CombineSourceA[2] = GL_CONSTANT_EXT; texUnit->CombineOperandRGB[0] = GL_SRC_COLOR; texUnit->CombineOperandRGB[1] = GL_SRC_COLOR; texUnit->CombineOperandRGB[2] = GL_SRC_ALPHA; texUnit->CombineOperandA[0] = GL_SRC_ALPHA; texUnit->CombineOperandA[1] = GL_SRC_ALPHA; texUnit->CombineOperandA[2] = GL_SRC_ALPHA; texUnit->CombineScaleShiftRGB = 0; texUnit->CombineScaleShiftA = 0; ASSIGN_4V( texUnit->EnvColor, 0.0, 0.0, 0.0, 0.0 ); texUnit->TexGenEnabled = 0; texUnit->GenModeS = GL_EYE_LINEAR; texUnit->GenModeT = GL_EYE_LINEAR; texUnit->GenModeR = GL_EYE_LINEAR; texUnit->GenModeQ = GL_EYE_LINEAR; texUnit->GenBitS = TEXGEN_EYE_LINEAR; texUnit->GenBitT = TEXGEN_EYE_LINEAR; texUnit->GenBitR = TEXGEN_EYE_LINEAR; texUnit->GenBitQ = TEXGEN_EYE_LINEAR; /* Yes, these plane coefficients are correct! */ ASSIGN_4V( texUnit->ObjectPlaneS, 1.0, 0.0, 0.0, 0.0 ); ASSIGN_4V( texUnit->ObjectPlaneT, 0.0, 1.0, 0.0, 0.0 ); ASSIGN_4V( texUnit->ObjectPlaneR, 0.0, 0.0, 0.0, 0.0 ); ASSIGN_4V( texUnit->ObjectPlaneQ, 0.0, 0.0, 0.0, 0.0 ); ASSIGN_4V( texUnit->EyePlaneS, 1.0, 0.0, 0.0, 0.0 ); ASSIGN_4V( texUnit->EyePlaneT, 0.0, 1.0, 0.0, 0.0 ); ASSIGN_4V( texUnit->EyePlaneR, 0.0, 0.0, 0.0, 0.0 ); ASSIGN_4V( texUnit->EyePlaneQ, 0.0, 0.0, 0.0, 0.0 ); texUnit->CurrentD[1] = ctx->Shared->DefaultD[1]; texUnit->CurrentD[2] = ctx->Shared->DefaultD[2]; texUnit->CurrentD[3] = ctx->Shared->DefaultD[3]; texUnit->CurrentCubeMap = ctx->Shared->DefaultCubeMap; } static void init_fallback_arrays( GLcontext *ctx ) { struct gl_client_array *cl; GLuint i; cl = &ctx->Fallback.Normal; cl->Size = 3; cl->Type = GL_FLOAT; cl->Stride = 0; cl->StrideB = 0; cl->Ptr = (void *) ctx->Current.Normal; cl->Enabled = 1; cl = &ctx->Fallback.Color; cl->Size = 4; cl->Type = GL_UNSIGNED_BYTE; cl->Stride = 0; cl->StrideB = 0; cl->Ptr = (void *) ctx->Current.ByteColor; cl->Enabled = 1; cl = &ctx->Fallback.Index; cl->Size = 1; cl->Type = GL_UNSIGNED_INT; cl->Stride = 0; cl->StrideB = 0; cl->Ptr = (void *) &ctx->Current.Index; cl->Enabled = 1; for (i = 0 ; i < MAX_TEXTURE_UNITS ; i++) { cl = &ctx->Fallback.TexCoord[i]; cl->Size = 4; cl->Type = GL_FLOAT; cl->Stride = 0; cl->StrideB = 0; cl->Ptr = (void *) ctx->Current.Texcoord[i]; cl->Enabled = 1; } cl = &ctx->Fallback.EdgeFlag; cl->Size = 1; cl->Type = GL_UNSIGNED_BYTE; cl->Stride = 0; cl->StrideB = 0; cl->Ptr = (void *) &ctx->Current.EdgeFlag; cl->Enabled = 1; } /* Initialize a 1-D evaluator map */ static void init_1d_map( struct gl_1d_map *map, int n, const float *initial ) { map->Order = 1; map->u1 = 0.0; map->u2 = 1.0; map->Points = (GLfloat *) MALLOC(n * sizeof(GLfloat)); if (map->Points) { GLint i; for (i=0;iPoints[i] = initial[i]; } } /* Initialize a 2-D evaluator map */ static void init_2d_map( struct gl_2d_map *map, int n, const float *initial ) { map->Uorder = 1; map->Vorder = 1; map->u1 = 0.0; map->u2 = 1.0; map->v1 = 0.0; map->v2 = 1.0; map->Points = (GLfloat *) MALLOC(n * sizeof(GLfloat)); if (map->Points) { GLint i; for (i=0;iPoints[i] = initial[i]; } } /* * Initialize the attribute groups in a GLcontext. */ static void init_attrib_groups( GLcontext *ctx ) { GLuint i, j; assert(ctx); /* Constants, may be overriden by device drivers */ ctx->Const.MaxTextureLevels = MAX_TEXTURE_LEVELS; ctx->Const.MaxTextureSize = 1 << (MAX_TEXTURE_LEVELS - 1); ctx->Const.MaxCubeTextureSize = ctx->Const.MaxTextureSize; ctx->Const.MaxTextureUnits = MAX_TEXTURE_UNITS; ctx->Const.MaxArrayLockSize = MAX_ARRAY_LOCK_SIZE; ctx->Const.SubPixelBits = SUB_PIXEL_BITS; ctx->Const.MinPointSize = MIN_POINT_SIZE; ctx->Const.MaxPointSize = MAX_POINT_SIZE; ctx->Const.MinPointSizeAA = MIN_POINT_SIZE; ctx->Const.MaxPointSizeAA = MAX_POINT_SIZE; ctx->Const.PointSizeGranularity = POINT_SIZE_GRANULARITY; ctx->Const.MinLineWidth = MIN_LINE_WIDTH; ctx->Const.MaxLineWidth = MAX_LINE_WIDTH; ctx->Const.MinLineWidthAA = MIN_LINE_WIDTH; ctx->Const.MaxLineWidthAA = MAX_LINE_WIDTH; ctx->Const.LineWidthGranularity = LINE_WIDTH_GRANULARITY; ctx->Const.NumAuxBuffers = NUM_AUX_BUFFERS; ctx->Const.MaxColorTableSize = MAX_COLOR_TABLE_SIZE; ctx->Const.MaxConvolutionWidth = MAX_CONVOLUTION_WIDTH; ctx->Const.MaxConvolutionHeight = MAX_CONVOLUTION_HEIGHT; ctx->Const.NumCompressedTextureFormats = 0; /* Modelview matrix */ gl_matrix_ctr( &ctx->ModelView ); gl_matrix_alloc_inv( &ctx->ModelView ); ctx->ModelViewStackDepth = 0; for (i = 0; i < MAX_MODELVIEW_STACK_DEPTH - 1; i++) { gl_matrix_ctr( &ctx->ModelViewStack[i] ); gl_matrix_alloc_inv( &ctx->ModelViewStack[i] ); } /* Projection matrix - need inv for user clipping in clip space*/ gl_matrix_ctr( &ctx->ProjectionMatrix ); gl_matrix_alloc_inv( &ctx->ProjectionMatrix ); gl_matrix_ctr( &ctx->ModelProjectMatrix ); gl_matrix_ctr( &ctx->ModelProjectWinMatrix ); ctx->ModelProjectWinMatrixUptodate = GL_FALSE; ctx->ProjectionStackDepth = 0; ctx->NearFarStack[0][0] = 1.0; /* These values seem weird by make */ ctx->NearFarStack[0][1] = 0.0; /* sense mathematically. */ for (i = 0; i < MAX_PROJECTION_STACK_DEPTH - 1; i++) { gl_matrix_ctr( &ctx->ProjectionStack[i] ); gl_matrix_alloc_inv( &ctx->ProjectionStack[i] ); } /* Texture matrix */ for (i = 0; i < MAX_TEXTURE_UNITS; i++) { gl_matrix_ctr( &ctx->TextureMatrix[i] ); ctx->TextureStackDepth[i] = 0; for (j = 0; j < MAX_TEXTURE_STACK_DEPTH - 1; j++) { gl_matrix_ctr( &ctx->TextureStack[i][j] ); ctx->TextureStack[i][j].inv = 0; } } /* Color matrix */ gl_matrix_ctr(&ctx->ColorMatrix); ctx->ColorStackDepth = 0; for (j = 0; j < MAX_COLOR_STACK_DEPTH - 1; j++) { gl_matrix_ctr(&ctx->ColorStack[j]); } /* Accumulate buffer group */ ASSIGN_4V( ctx->Accum.ClearColor, 0.0, 0.0, 0.0, 0.0 ); /* Color buffer group */ ctx->Color.IndexMask = 0xffffffff; ctx->Color.ColorMask[0] = 0xff; ctx->Color.ColorMask[1] = 0xff; ctx->Color.ColorMask[2] = 0xff; ctx->Color.ColorMask[3] = 0xff; ctx->Color.SWmasking = GL_FALSE; ctx->Color.ClearIndex = 0; ASSIGN_4V( ctx->Color.ClearColor, 0.0, 0.0, 0.0, 0.0 ); ctx->Color.DrawBuffer = GL_FRONT; ctx->Color.AlphaEnabled = GL_FALSE; ctx->Color.AlphaFunc = GL_ALWAYS; ctx->Color.AlphaRef = 0; ctx->Color.BlendEnabled = GL_FALSE; ctx->Color.BlendSrcRGB = GL_ONE; ctx->Color.BlendDstRGB = GL_ZERO; ctx->Color.BlendSrcA = GL_ONE; ctx->Color.BlendDstA = GL_ZERO; ctx->Color.BlendEquation = GL_FUNC_ADD_EXT; ctx->Color.BlendFunc = NULL; /* this pointer set only when needed */ ASSIGN_4V( ctx->Color.BlendColor, 0.0, 0.0, 0.0, 0.0 ); ctx->Color.IndexLogicOpEnabled = GL_FALSE; ctx->Color.ColorLogicOpEnabled = GL_FALSE; ctx->Color.SWLogicOpEnabled = GL_FALSE; ctx->Color.LogicOp = GL_COPY; ctx->Color.DitherFlag = GL_TRUE; ctx->Color.MultiDrawBuffer = GL_FALSE; /* Current group */ ASSIGN_4V( ctx->Current.ByteColor, 255, 255, 255, 255); ctx->Current.Index = 1; for (i=0; iCurrent.Texcoord[i], 0.0, 0.0, 0.0, 1.0 ); ASSIGN_4V( ctx->Current.RasterPos, 0.0, 0.0, 0.0, 1.0 ); ctx->Current.RasterDistance = 0.0; ASSIGN_4V( ctx->Current.RasterColor, 1.0, 1.0, 1.0, 1.0 ); ctx->Current.RasterIndex = 1; for (i=0; iCurrent.RasterMultiTexCoord[i], 0.0, 0.0, 0.0, 1.0 ); ctx->Current.RasterTexCoord = ctx->Current.RasterMultiTexCoord[0]; ctx->Current.RasterPosValid = GL_TRUE; ctx->Current.EdgeFlag = GL_TRUE; ASSIGN_3V( ctx->Current.Normal, 0.0, 0.0, 1.0 ); ctx->Current.Primitive = (GLenum) (GL_POLYGON + 1); ctx->Current.Flag = (VERT_NORM|VERT_INDEX|VERT_RGBA|VERT_EDGE| VERT_TEX0_1|VERT_TEX1_1|VERT_MATERIAL); init_fallback_arrays( ctx ); /* Depth buffer group */ ctx->Depth.Test = GL_FALSE; ctx->Depth.Clear = 1.0; ctx->Depth.Func = GL_LESS; ctx->Depth.Mask = GL_TRUE; ctx->Depth.OcclusionTest = GL_FALSE; /* Evaluators group */ ctx->Eval.Map1Color4 = GL_FALSE; ctx->Eval.Map1Index = GL_FALSE; ctx->Eval.Map1Normal = GL_FALSE; ctx->Eval.Map1TextureCoord1 = GL_FALSE; ctx->Eval.Map1TextureCoord2 = GL_FALSE; ctx->Eval.Map1TextureCoord3 = GL_FALSE; ctx->Eval.Map1TextureCoord4 = GL_FALSE; ctx->Eval.Map1Vertex3 = GL_FALSE; ctx->Eval.Map1Vertex4 = GL_FALSE; ctx->Eval.Map2Color4 = GL_FALSE; ctx->Eval.Map2Index = GL_FALSE; ctx->Eval.Map2Normal = GL_FALSE; ctx->Eval.Map2TextureCoord1 = GL_FALSE; ctx->Eval.Map2TextureCoord2 = GL_FALSE; ctx->Eval.Map2TextureCoord3 = GL_FALSE; ctx->Eval.Map2TextureCoord4 = GL_FALSE; ctx->Eval.Map2Vertex3 = GL_FALSE; ctx->Eval.Map2Vertex4 = GL_FALSE; ctx->Eval.AutoNormal = GL_FALSE; ctx->Eval.MapGrid1un = 1; ctx->Eval.MapGrid1u1 = 0.0; ctx->Eval.MapGrid1u2 = 1.0; ctx->Eval.MapGrid2un = 1; ctx->Eval.MapGrid2vn = 1; ctx->Eval.MapGrid2u1 = 0.0; ctx->Eval.MapGrid2u2 = 1.0; ctx->Eval.MapGrid2v1 = 0.0; ctx->Eval.MapGrid2v2 = 1.0; /* Evaluator data */ { static GLfloat vertex[4] = { 0.0, 0.0, 0.0, 1.0 }; static GLfloat normal[3] = { 0.0, 0.0, 1.0 }; static GLfloat index[1] = { 1.0 }; static GLfloat color[4] = { 1.0, 1.0, 1.0, 1.0 }; static GLfloat texcoord[4] = { 0.0, 0.0, 0.0, 1.0 }; init_1d_map( &ctx->EvalMap.Map1Vertex3, 3, vertex ); init_1d_map( &ctx->EvalMap.Map1Vertex4, 4, vertex ); init_1d_map( &ctx->EvalMap.Map1Index, 1, index ); init_1d_map( &ctx->EvalMap.Map1Color4, 4, color ); init_1d_map( &ctx->EvalMap.Map1Normal, 3, normal ); init_1d_map( &ctx->EvalMap.Map1Texture1, 1, texcoord ); init_1d_map( &ctx->EvalMap.Map1Texture2, 2, texcoord ); init_1d_map( &ctx->EvalMap.Map1Texture3, 3, texcoord ); init_1d_map( &ctx->EvalMap.Map1Texture4, 4, texcoord ); init_2d_map( &ctx->EvalMap.Map2Vertex3, 3, vertex ); init_2d_map( &ctx->EvalMap.Map2Vertex4, 4, vertex ); init_2d_map( &ctx->EvalMap.Map2Index, 1, index ); init_2d_map( &ctx->EvalMap.Map2Color4, 4, color ); init_2d_map( &ctx->EvalMap.Map2Normal, 3, normal ); init_2d_map( &ctx->EvalMap.Map2Texture1, 1, texcoord ); init_2d_map( &ctx->EvalMap.Map2Texture2, 2, texcoord ); init_2d_map( &ctx->EvalMap.Map2Texture3, 3, texcoord ); init_2d_map( &ctx->EvalMap.Map2Texture4, 4, texcoord ); } /* Fog group */ ctx->Fog.Enabled = GL_FALSE; ctx->Fog.Mode = GL_EXP; ASSIGN_4V( ctx->Fog.Color, 0.0, 0.0, 0.0, 0.0 ); ctx->Fog.Index = 0.0; ctx->Fog.Density = 1.0; ctx->Fog.Start = 0.0; ctx->Fog.End = 1.0; /* Hint group */ ctx->Hint.PerspectiveCorrection = GL_DONT_CARE; ctx->Hint.PointSmooth = GL_DONT_CARE; ctx->Hint.LineSmooth = GL_DONT_CARE; ctx->Hint.PolygonSmooth = GL_DONT_CARE; ctx->Hint.Fog = GL_DONT_CARE; ctx->Hint.AllowDrawWin = GL_TRUE; ctx->Hint.AllowDrawFrg = GL_TRUE; ctx->Hint.AllowDrawMem = GL_TRUE; ctx->Hint.StrictLighting = GL_TRUE; ctx->Hint.ClipVolumeClipping = GL_DONT_CARE; ctx->Hint.TextureCompression = GL_DONT_CARE; /* Histogram group */ ctx->Histogram.Width = 0; ctx->Histogram.Format = GL_RGBA; ctx->Histogram.Sink = GL_FALSE; ctx->Histogram.RedSize = 0xffffffff; ctx->Histogram.GreenSize = 0xffffffff; ctx->Histogram.BlueSize = 0xffffffff; ctx->Histogram.AlphaSize = 0xffffffff; ctx->Histogram.LuminanceSize = 0xffffffff; for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) { ctx->Histogram.Count[i][0] = 0; ctx->Histogram.Count[i][1] = 0; ctx->Histogram.Count[i][2] = 0; ctx->Histogram.Count[i][3] = 0; } /* Min/Max group */ ctx->MinMax.Format = GL_RGBA; ctx->MinMax.Sink = GL_FALSE; ctx->MinMax.Min[RCOMP] = 1000; ctx->MinMax.Max[RCOMP] = -1000; ctx->MinMax.Min[GCOMP] = 1000; ctx->MinMax.Max[GCOMP] = -1000; ctx->MinMax.Min[BCOMP] = 1000; ctx->MinMax.Max[BCOMP] = -1000; ctx->MinMax.Min[ACOMP] = 1000; ctx->MinMax.Max[ACOMP] = -1000; /* Pipeline */ gl_pipeline_init( ctx ); gl_cva_init( ctx ); /* Extensions */ gl_extensions_ctr( ctx ); ctx->AllowVertexCull = CLIP_CULLED_BIT; /* Lighting group */ for (i=0;iLight.Light[i], i ); } make_empty_list( &ctx->Light.EnabledList ); init_lightmodel( &ctx->Light.Model ); init_material( &ctx->Light.Material[0] ); init_material( &ctx->Light.Material[1] ); ctx->Light.ShadeModel = GL_SMOOTH; ctx->Light.Enabled = GL_FALSE; ctx->Light.ColorMaterialFace = GL_FRONT_AND_BACK; ctx->Light.ColorMaterialMode = GL_AMBIENT_AND_DIFFUSE; ctx->Light.ColorMaterialBitmask = gl_material_bitmask( ctx, GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, ~0, 0 ); ctx->Light.ColorMaterialEnabled = GL_FALSE; /* Lighting miscellaneous */ ctx->ShineTabList = MALLOC_STRUCT( gl_shine_tab ); make_empty_list( ctx->ShineTabList ); for (i = 0 ; i < 10 ; i++) { struct gl_shine_tab *s = MALLOC_STRUCT( gl_shine_tab ); s->shininess = -1; s->refcount = 0; insert_at_tail( ctx->ShineTabList, s ); } for (i = 0 ; i < 4 ; i++) { ctx->ShineTable[i] = ctx->ShineTabList->prev; ctx->ShineTable[i]->refcount++; } gl_compute_shine_table( ctx, 0, ctx->Light.Material[0].Shininess ); gl_compute_shine_table( ctx, 2, ctx->Light.Material[0].Shininess * .5 ); gl_compute_shine_table( ctx, 1, ctx->Light.Material[1].Shininess ); gl_compute_shine_table( ctx, 3, ctx->Light.Material[1].Shininess * .5 ); /* Line group */ ctx->Line.SmoothFlag = GL_FALSE; ctx->Line.StippleFlag = GL_FALSE; ctx->Line.Width = 1.0; ctx->Line.StipplePattern = 0xffff; ctx->Line.StippleFactor = 1; /* Display List group */ ctx->List.ListBase = 0; /* Pixel group */ ctx->Pixel.RedBias = 0.0; ctx->Pixel.RedScale = 1.0; ctx->Pixel.GreenBias = 0.0; ctx->Pixel.GreenScale = 1.0; ctx->Pixel.BlueBias = 0.0; ctx->Pixel.BlueScale = 1.0; ctx->Pixel.AlphaBias = 0.0; ctx->Pixel.AlphaScale = 1.0; ctx->Pixel.DepthBias = 0.0; ctx->Pixel.DepthScale = 1.0; ctx->Pixel.IndexOffset = 0; ctx->Pixel.IndexShift = 0; ctx->Pixel.ZoomX = 1.0; ctx->Pixel.ZoomY = 1.0; ctx->Pixel.MapColorFlag = GL_FALSE; ctx->Pixel.MapStencilFlag = GL_FALSE; ctx->Pixel.MapStoSsize = 1; ctx->Pixel.MapItoIsize = 1; ctx->Pixel.MapItoRsize = 1; ctx->Pixel.MapItoGsize = 1; ctx->Pixel.MapItoBsize = 1; ctx->Pixel.MapItoAsize = 1; ctx->Pixel.MapRtoRsize = 1; ctx->Pixel.MapGtoGsize = 1; ctx->Pixel.MapBtoBsize = 1; ctx->Pixel.MapAtoAsize = 1; ctx->Pixel.MapStoS[0] = 0; ctx->Pixel.MapItoI[0] = 0; ctx->Pixel.MapItoR[0] = 0.0; ctx->Pixel.MapItoG[0] = 0.0; ctx->Pixel.MapItoB[0] = 0.0; ctx->Pixel.MapItoA[0] = 0.0; ctx->Pixel.MapItoR8[0] = 0; ctx->Pixel.MapItoG8[0] = 0; ctx->Pixel.MapItoB8[0] = 0; ctx->Pixel.MapItoA8[0] = 0; ctx->Pixel.MapRtoR[0] = 0.0; ctx->Pixel.MapGtoG[0] = 0.0; ctx->Pixel.MapBtoB[0] = 0.0; ctx->Pixel.MapAtoA[0] = 0.0; ctx->Pixel.HistogramEnabled = GL_FALSE; ctx->Pixel.MinMaxEnabled = GL_FALSE; ctx->Pixel.PixelTextureEnabled = GL_FALSE; ctx->Pixel.FragmentRgbSource = GL_PIXEL_GROUP_COLOR_SGIS; ctx->Pixel.FragmentAlphaSource = GL_PIXEL_GROUP_COLOR_SGIS; ASSIGN_4V(ctx->Pixel.PostColorMatrixScale, 1.0, 1.0, 1.0, 1.0); ASSIGN_4V(ctx->Pixel.PostColorMatrixBias, 0.0, 0.0, 0.0, 0.0); ASSIGN_4V(ctx->Pixel.ColorTableScale, 1.0, 1.0, 1.0, 1.0); ASSIGN_4V(ctx->Pixel.ColorTableBias, 0.0, 0.0, 0.0, 0.0); ASSIGN_4V(ctx->Pixel.PCCTscale, 1.0, 1.0, 1.0, 1.0); ASSIGN_4V(ctx->Pixel.PCCTbias, 0.0, 0.0, 0.0, 0.0); ASSIGN_4V(ctx->Pixel.PCMCTscale, 1.0, 1.0, 1.0, 1.0); ASSIGN_4V(ctx->Pixel.PCMCTbias, 0.0, 0.0, 0.0, 0.0); ctx->Pixel.ColorTableEnabled = GL_FALSE; ctx->Pixel.PostConvolutionColorTableEnabled = GL_FALSE; ctx->Pixel.PostColorMatrixColorTableEnabled = GL_FALSE; ctx->Pixel.Convolution1DEnabled = GL_FALSE; ctx->Pixel.Convolution2DEnabled = GL_FALSE; ctx->Pixel.Separable2DEnabled = GL_FALSE; for (i = 0; i < 3; i++) { ASSIGN_4V(ctx->Pixel.ConvolutionBorderColor[i], 0.0, 0.0, 0.0, 0.0); ctx->Pixel.ConvolutionBorderMode[i] = GL_REDUCE; ASSIGN_4V(ctx->Pixel.ConvolutionFilterScale[i], 1.0, 1.0, 1.0, 1.0); ASSIGN_4V(ctx->Pixel.ConvolutionFilterBias[i], 0.0, 0.0, 0.0, 0.0); } ASSIGN_4V(ctx->Pixel.PostConvolutionScale, 1.0, 1.0, 1.0, 1.0); ASSIGN_4V(ctx->Pixel.PostConvolutionBias, 0.0, 0.0, 0.0, 0.0); /* Point group */ ctx->Point.SmoothFlag = GL_FALSE; ctx->Point.UserSize = 1.0; ctx->Point.Size = 1.0; ctx->Point.Params[0] = 1.0; ctx->Point.Params[1] = 0.0; ctx->Point.Params[2] = 0.0; ctx->Point.Attenuated = GL_FALSE; ctx->Point.MinSize = 0.0; ctx->Point.MaxSize = (GLfloat) MAX_POINT_SIZE; ctx->Point.Threshold = 1.0; /* Polygon group */ ctx->Polygon.CullFlag = GL_FALSE; ctx->Polygon.CullFaceMode = GL_BACK; ctx->Polygon.FrontFace = GL_CCW; ctx->Polygon.FrontBit = 0; ctx->Polygon.FrontMode = GL_FILL; ctx->Polygon.BackMode = GL_FILL; ctx->Polygon.Unfilled = GL_FALSE; ctx->Polygon.SmoothFlag = GL_FALSE; ctx->Polygon.StippleFlag = GL_FALSE; ctx->Polygon.OffsetFactor = 0.0F; ctx->Polygon.OffsetUnits = 0.0F; ctx->Polygon.OffsetPoint = GL_FALSE; ctx->Polygon.OffsetLine = GL_FALSE; ctx->Polygon.OffsetFill = GL_FALSE; /* Polygon Stipple group */ MEMSET( ctx->PolygonStipple, 0xff, 32*sizeof(GLuint) ); /* Scissor group */ ctx->Scissor.Enabled = GL_FALSE; ctx->Scissor.X = 0; ctx->Scissor.Y = 0; ctx->Scissor.Width = 0; ctx->Scissor.Height = 0; /* Stencil group */ ctx->Stencil.Enabled = GL_FALSE; ctx->Stencil.Function = GL_ALWAYS; ctx->Stencil.FailFunc = GL_KEEP; ctx->Stencil.ZPassFunc = GL_KEEP; ctx->Stencil.ZFailFunc = GL_KEEP; ctx->Stencil.Ref = 0; ctx->Stencil.ValueMask = STENCIL_MAX; ctx->Stencil.Clear = 0; ctx->Stencil.WriteMask = STENCIL_MAX; /* Texture group */ ctx->Texture.CurrentUnit = 0; /* multitexture */ ctx->Texture.CurrentTransformUnit = 0; /* multitexture */ ctx->Texture.Enabled = 0; for (i=0; iTexture.Palette); /* Transformation group */ ctx->Transform.MatrixMode = GL_MODELVIEW; ctx->Transform.Normalize = GL_FALSE; ctx->Transform.RescaleNormals = GL_FALSE; for (i=0;iTransform.ClipEnabled[i] = GL_FALSE; ASSIGN_4V( ctx->Transform.EyeUserPlane[i], 0.0, 0.0, 0.0, 0.0 ); } ctx->Transform.AnyClip = GL_FALSE; /* Viewport group */ ctx->Viewport.X = 0; ctx->Viewport.Y = 0; ctx->Viewport.Width = 0; ctx->Viewport.Height = 0; ctx->Viewport.Near = 0.0; ctx->Viewport.Far = 1.0; gl_matrix_ctr(&ctx->Viewport.WindowMap); #define Sz 10 #define Tz 14 ctx->Viewport.WindowMap.m[Sz] = 0.5 * ctx->Visual->DepthMaxF; ctx->Viewport.WindowMap.m[Tz] = 0.5 * ctx->Visual->DepthMaxF; #undef Sz #undef Tz ctx->Viewport.WindowMap.flags = MAT_FLAG_GENERAL_SCALE|MAT_FLAG_TRANSLATION; ctx->Viewport.WindowMap.type = MATRIX_3D_NO_ROT; /* Vertex arrays */ ctx->Array.Vertex.Size = 4; ctx->Array.Vertex.Type = GL_FLOAT; ctx->Array.Vertex.Stride = 0; ctx->Array.Vertex.StrideB = 0; ctx->Array.Vertex.Ptr = NULL; ctx->Array.Vertex.Enabled = GL_FALSE; ctx->Array.Normal.Type = GL_FLOAT; ctx->Array.Normal.Stride = 0; ctx->Array.Normal.StrideB = 0; ctx->Array.Normal.Ptr = NULL; ctx->Array.Normal.Enabled = GL_FALSE; ctx->Array.Color.Size = 4; ctx->Array.Color.Type = GL_FLOAT; ctx->Array.Color.Stride = 0; ctx->Array.Color.StrideB = 0; ctx->Array.Color.Ptr = NULL; ctx->Array.Color.Enabled = GL_FALSE; ctx->Array.Index.Type = GL_FLOAT; ctx->Array.Index.Stride = 0; ctx->Array.Index.StrideB = 0; ctx->Array.Index.Ptr = NULL; ctx->Array.Index.Enabled = GL_FALSE; for (i = 0; i < MAX_TEXTURE_UNITS; i++) { ctx->Array.TexCoord[i].Size = 4; ctx->Array.TexCoord[i].Type = GL_FLOAT; ctx->Array.TexCoord[i].Stride = 0; ctx->Array.TexCoord[i].StrideB = 0; ctx->Array.TexCoord[i].Ptr = NULL; ctx->Array.TexCoord[i].Enabled = GL_FALSE; } ctx->Array.TexCoordInterleaveFactor = 1; ctx->Array.EdgeFlag.Stride = 0; ctx->Array.EdgeFlag.StrideB = 0; ctx->Array.EdgeFlag.Ptr = NULL; ctx->Array.EdgeFlag.Enabled = GL_FALSE; ctx->Array.ActiveTexture = 0; /* GL_ARB_multitexture */ /* Pixel transfer */ ctx->Pack.Alignment = 4; ctx->Pack.RowLength = 0; ctx->Pack.ImageHeight = 0; ctx->Pack.SkipPixels = 0; ctx->Pack.SkipRows = 0; ctx->Pack.SkipImages = 0; ctx->Pack.SwapBytes = GL_FALSE; ctx->Pack.LsbFirst = GL_FALSE; ctx->Unpack.Alignment = 4; ctx->Unpack.RowLength = 0; ctx->Unpack.ImageHeight = 0; ctx->Unpack.SkipPixels = 0; ctx->Unpack.SkipRows = 0; ctx->Unpack.SkipImages = 0; ctx->Unpack.SwapBytes = GL_FALSE; ctx->Unpack.LsbFirst = GL_FALSE; /* Feedback */ ctx->Feedback.Type = GL_2D; /* TODO: verify */ ctx->Feedback.Buffer = NULL; ctx->Feedback.BufferSize = 0; ctx->Feedback.Count = 0; /* Selection/picking */ ctx->Select.Buffer = NULL; ctx->Select.BufferSize = 0; ctx->Select.BufferCount = 0; ctx->Select.Hits = 0; ctx->Select.NameStackDepth = 0; /* Optimized Accum buffer */ ctx->IntegerAccumMode = GL_TRUE; ctx->IntegerAccumScaler = 0.0; /* Renderer and client attribute stacks */ ctx->AttribStackDepth = 0; ctx->ClientAttribStackDepth = 0; /* Display list */ ctx->CallDepth = 0; ctx->ExecuteFlag = GL_TRUE; ctx->CompileFlag = GL_FALSE; ctx->CurrentListPtr = NULL; ctx->CurrentBlock = NULL; ctx->CurrentListNum = 0; ctx->CurrentPos = 0; /* Color tables */ _mesa_init_colortable(&ctx->ColorTable); _mesa_init_colortable(&ctx->ProxyColorTable); _mesa_init_colortable(&ctx->PostConvolutionColorTable); _mesa_init_colortable(&ctx->ProxyPostConvolutionColorTable); _mesa_init_colortable(&ctx->PostColorMatrixColorTable); _mesa_init_colortable(&ctx->ProxyPostColorMatrixColorTable); /* Miscellaneous */ ctx->NewState = NEW_ALL; ctx->RenderMode = GL_RENDER; ctx->StippleCounter = 0; ctx->NeedNormals = GL_FALSE; ctx->DoViewportMapping = GL_TRUE; ctx->ImageTransferState = UPDATE_IMAGE_TRANSFER_STATE; ctx->NeedEyeCoords = GL_FALSE; ctx->NeedEyeNormals = GL_FALSE; ctx->vb_proj_matrix = &ctx->ModelProjectMatrix; ctx->ErrorValue = (GLenum) GL_NO_ERROR; ctx->CatchSignals = GL_TRUE; ctx->OcclusionResult = GL_FALSE; ctx->OcclusionResultSaved = GL_FALSE; /* For debug/development only */ ctx->NoRaster = getenv("MESA_NO_RASTER") ? GL_TRUE : GL_FALSE; ctx->FirstTimeCurrent = GL_TRUE; /* Dither disable */ ctx->NoDither = getenv("MESA_NO_DITHER") ? GL_TRUE : GL_FALSE; if (ctx->NoDither) { if (getenv("MESA_DEBUG")) { fprintf(stderr, "MESA_NO_DITHER set - dithering disabled\n"); } ctx->Color.DitherFlag = GL_FALSE; } } /* * Allocate the proxy textures. If we run out of memory part way through * the allocations clean up and return GL_FALSE. * Return: GL_TRUE=success, GL_FALSE=failure */ static GLboolean alloc_proxy_textures( GLcontext *ctx ) { GLboolean out_of_memory; GLint i; ctx->Texture.Proxy1D = gl_alloc_texture_object(NULL, 0, 1); if (!ctx->Texture.Proxy1D) { return GL_FALSE; } ctx->Texture.Proxy2D = gl_alloc_texture_object(NULL, 0, 2); if (!ctx->Texture.Proxy2D) { gl_free_texture_object(NULL, ctx->Texture.Proxy1D); return GL_FALSE; } ctx->Texture.Proxy3D = gl_alloc_texture_object(NULL, 0, 3); if (!ctx->Texture.Proxy3D) { gl_free_texture_object(NULL, ctx->Texture.Proxy1D); gl_free_texture_object(NULL, ctx->Texture.Proxy2D); return GL_FALSE; } out_of_memory = GL_FALSE; for (i=0;iTexture.Proxy1D->Image[i] = _mesa_alloc_texture_image(); ctx->Texture.Proxy2D->Image[i] = _mesa_alloc_texture_image(); ctx->Texture.Proxy3D->Image[i] = _mesa_alloc_texture_image(); if (!ctx->Texture.Proxy1D->Image[i] || !ctx->Texture.Proxy2D->Image[i] || !ctx->Texture.Proxy3D->Image[i]) { out_of_memory = GL_TRUE; } } if (out_of_memory) { for (i=0;iTexture.Proxy1D->Image[i]) { _mesa_free_texture_image(ctx->Texture.Proxy1D->Image[i]); } if (ctx->Texture.Proxy2D->Image[i]) { _mesa_free_texture_image(ctx->Texture.Proxy2D->Image[i]); } if (ctx->Texture.Proxy3D->Image[i]) { _mesa_free_texture_image(ctx->Texture.Proxy3D->Image[i]); } } gl_free_texture_object(NULL, ctx->Texture.Proxy1D); gl_free_texture_object(NULL, ctx->Texture.Proxy2D); gl_free_texture_object(NULL, ctx->Texture.Proxy3D); return GL_FALSE; } else { return GL_TRUE; } } /* * Initialize a GLcontext struct. This includes allocating all the * other structs and arrays which hang off of the context by pointers. */ GLboolean _mesa_initialize_context( GLcontext *ctx, GLvisual *visual, GLcontext *share_list, void *driver_ctx, GLboolean direct ) { GLuint dispatchSize; (void) direct; /* not used */ /* misc one-time initializations */ one_time_init(); ctx->DriverCtx = driver_ctx; ctx->Visual = visual; ctx->DrawBuffer = NULL; ctx->ReadBuffer = NULL; ctx->VB = gl_vb_create_for_immediate( ctx ); if (!ctx->VB) { return GL_FALSE; } ctx->input = ctx->VB->IM; ctx->PB = gl_alloc_pb(); if (!ctx->PB) { ALIGN_FREE( ctx->VB ); return GL_FALSE; } if (share_list) { /* share the group of display lists of another context */ ctx->Shared = share_list->Shared; } else { /* allocate new group of display lists */ ctx->Shared = alloc_shared_state(); if (!ctx->Shared) { ALIGN_FREE( ctx->VB ); FREE( ctx->PB ); return GL_FALSE; } } _glthread_LOCK_MUTEX(ctx->Shared->Mutex); ctx->Shared->RefCount++; _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); init_attrib_groups( ctx ); gl_reset_vb( ctx->VB ); gl_reset_input( ctx ); if (visual->DBflag) { ctx->Color.DrawBuffer = GL_BACK; ctx->Color.DriverDrawBuffer = GL_BACK_LEFT; ctx->Color.DrawDestMask = BACK_LEFT_BIT; ctx->Pixel.ReadBuffer = GL_BACK; ctx->Pixel.DriverReadBuffer = GL_BACK_LEFT; } else { ctx->Color.DrawBuffer = GL_FRONT; ctx->Color.DriverDrawBuffer = GL_FRONT_LEFT; ctx->Color.DrawDestMask = FRONT_LEFT_BIT; ctx->Pixel.ReadBuffer = GL_FRONT; ctx->Pixel.DriverReadBuffer = GL_FRONT_LEFT; } if (!alloc_proxy_textures(ctx)) { free_shared_state(ctx, ctx->Shared); ALIGN_FREE( ctx->VB ); FREE( ctx->PB ); return GL_FALSE; } /* register the most recent extension functions with libGL */ _glapi_add_entrypoint("glTbufferMask3DFX", 553); _glapi_add_entrypoint("glCompressedTexImage3DARB", 554); _glapi_add_entrypoint("glCompressedTexImage2DARB", 555); _glapi_add_entrypoint("glCompressedTexImage1DARB", 556); _glapi_add_entrypoint("glCompressedTexSubImage3DARB", 557); _glapi_add_entrypoint("glCompressedTexSubImage2DARB", 558); _glapi_add_entrypoint("glCompressedTexSubImage1DARB", 559); _glapi_add_entrypoint("glGetCompressedTexImageARB", 560); /* Find the larger of Mesa's dispatch table and libGL's dispatch table. * In practice, this'll be the same for stand-alone Mesa. But for DRI * Mesa we do this to accomodate different versions of libGL and various * DRI drivers. */ dispatchSize = MAX2(_glapi_get_dispatch_table_size(), sizeof(struct _glapi_table) / sizeof(void *)); /* setup API dispatch tables */ ctx->Exec = (struct _glapi_table *) CALLOC(dispatchSize * sizeof(void*)); ctx->Save = (struct _glapi_table *) CALLOC(dispatchSize * sizeof(void*)); if (!ctx->Exec || !ctx->Save) { free_shared_state(ctx, ctx->Shared); ALIGN_FREE( ctx->VB ); FREE( ctx->PB ); if (ctx->Exec) FREE( ctx->Exec ); } _mesa_init_exec_table(ctx->Exec, dispatchSize); _mesa_init_dlist_table(ctx->Save, dispatchSize); ctx->CurrentDispatch = ctx->Exec; #if defined(TRACE) ctx->TraceCtx = CALLOC( sizeof(trace_context_t) ); #if 0 /* Brian: do you want to have CreateContext fail here, or should we just trap in NewTrace (currently done)? */ if (!(ctx->TraceCtx)) { free_shared_state(ctx, ctx->Shared); ALIGN_FREE( ctx->VB ); FREE( ctx->PB ); FREE( ctx->Exec ); FREE( ctx->Save ); return GL_FALSE; } #endif trInitContext(ctx->TraceCtx); ctx->TraceDispatch = (struct _glapi_table *) CALLOC(dispatchSize * sizeof(void*)); #if 0 if (!(ctx->TraceCtx)) { free_shared_state(ctx, ctx->Shared); ALIGN_FREE( ctx->VB ); FREE( ctx->PB ); FREE( ctx->Exec ); FREE( ctx->Save ); FREE( ctx->TraceCtx ); return GL_FALSE; } #endif trInitDispatch(ctx->TraceDispatch); #endif return GL_TRUE; } /* * Allocate and initialize a GLcontext structure. * Input: visual - a GLvisual pointer * sharelist - another context to share display lists with or NULL * driver_ctx - pointer to device driver's context state struct * Return: pointer to a new gl_context struct or NULL if error. */ GLcontext * gl_create_context( GLvisual *visual, GLcontext *share_list, void *driver_ctx, GLboolean direct ) { GLcontext *ctx = (GLcontext *) CALLOC( sizeof(GLcontext) ); if (!ctx) { return NULL; } if (_mesa_initialize_context(ctx, visual, share_list, driver_ctx, direct)) { return ctx; } else { FREE(ctx); return NULL; } } /* * Free the data associated with the given context. * But don't free() the GLcontext struct itself! */ void gl_free_context_data( GLcontext *ctx ) { struct gl_shine_tab *s, *tmps; GLuint i, j; /* if we're destroying the current context, unbind it first */ if (ctx == gl_get_current_context()) { gl_make_current(NULL, NULL); } gl_matrix_dtr( &ctx->ModelView ); for (i = 0; i < MAX_MODELVIEW_STACK_DEPTH - 1; i++) { gl_matrix_dtr( &ctx->ModelViewStack[i] ); } gl_matrix_dtr( &ctx->ProjectionMatrix ); for (i = 0; i < MAX_PROJECTION_STACK_DEPTH - 1; i++) { gl_matrix_dtr( &ctx->ProjectionStack[i] ); } for (i = 0; i < MAX_TEXTURE_UNITS; i++) { gl_matrix_dtr( &ctx->TextureMatrix[i] ); for (j = 0; j < MAX_TEXTURE_STACK_DEPTH - 1; j++) { gl_matrix_dtr( &ctx->TextureStack[i][j] ); } } FREE( ctx->PB ); if (ctx->input != ctx->VB->IM) gl_immediate_free( ctx->input ); gl_vb_free( ctx->VB ); _glthread_LOCK_MUTEX(ctx->Shared->Mutex); ctx->Shared->RefCount--; assert(ctx->Shared->RefCount >= 0); _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); if (ctx->Shared->RefCount == 0) { /* free shared state */ free_shared_state( ctx, ctx->Shared ); } foreach_s( s, tmps, ctx->ShineTabList ) { FREE( s ); } FREE( ctx->ShineTabList ); /* Free proxy texture objects */ gl_free_texture_object( NULL, ctx->Texture.Proxy1D ); gl_free_texture_object( NULL, ctx->Texture.Proxy2D ); gl_free_texture_object( NULL, ctx->Texture.Proxy3D ); /* Free evaluator data */ if (ctx->EvalMap.Map1Vertex3.Points) FREE( ctx->EvalMap.Map1Vertex3.Points ); if (ctx->EvalMap.Map1Vertex4.Points) FREE( ctx->EvalMap.Map1Vertex4.Points ); if (ctx->EvalMap.Map1Index.Points) FREE( ctx->EvalMap.Map1Index.Points ); if (ctx->EvalMap.Map1Color4.Points) FREE( ctx->EvalMap.Map1Color4.Points ); if (ctx->EvalMap.Map1Normal.Points) FREE( ctx->EvalMap.Map1Normal.Points ); if (ctx->EvalMap.Map1Texture1.Points) FREE( ctx->EvalMap.Map1Texture1.Points ); if (ctx->EvalMap.Map1Texture2.Points) FREE( ctx->EvalMap.Map1Texture2.Points ); if (ctx->EvalMap.Map1Texture3.Points) FREE( ctx->EvalMap.Map1Texture3.Points ); if (ctx->EvalMap.Map1Texture4.Points) FREE( ctx->EvalMap.Map1Texture4.Points ); if (ctx->EvalMap.Map2Vertex3.Points) FREE( ctx->EvalMap.Map2Vertex3.Points ); if (ctx->EvalMap.Map2Vertex4.Points) FREE( ctx->EvalMap.Map2Vertex4.Points ); if (ctx->EvalMap.Map2Index.Points) FREE( ctx->EvalMap.Map2Index.Points ); if (ctx->EvalMap.Map2Color4.Points) FREE( ctx->EvalMap.Map2Color4.Points ); if (ctx->EvalMap.Map2Normal.Points) FREE( ctx->EvalMap.Map2Normal.Points ); if (ctx->EvalMap.Map2Texture1.Points) FREE( ctx->EvalMap.Map2Texture1.Points ); if (ctx->EvalMap.Map2Texture2.Points) FREE( ctx->EvalMap.Map2Texture2.Points ); if (ctx->EvalMap.Map2Texture3.Points) FREE( ctx->EvalMap.Map2Texture3.Points ); if (ctx->EvalMap.Map2Texture4.Points) FREE( ctx->EvalMap.Map2Texture4.Points ); _mesa_free_colortable_data( &ctx->ColorTable ); _mesa_free_colortable_data( &ctx->PostConvolutionColorTable ); _mesa_free_colortable_data( &ctx->PostColorMatrixColorTable ); _mesa_free_colortable_data( &ctx->Texture.Palette ); /* Free cache of immediate buffers. */ while (ctx->nr_im_queued-- > 0) { struct immediate * next = ctx->freed_im_queue->next; ALIGN_FREE( ctx->freed_im_queue ); ctx->freed_im_queue = next; } gl_extensions_dtr(ctx); FREE(ctx->Exec); FREE(ctx->Save); } /* * Destroy a GLcontext structure. */ void gl_destroy_context( GLcontext *ctx ) { if (ctx) { gl_free_context_data(ctx); FREE( (void *) ctx ); } } /* * Called by the driver after both the context and driver are fully * initialized. Currently just reads the config file. */ void gl_context_initialize( GLcontext *ctx ) { gl_read_config_file( ctx ); } /* * Copy attribute groups from one context to another. * Input: src - source context * dst - destination context * mask - bitwise OR of GL_*_BIT flags */ void gl_copy_context( const GLcontext *src, GLcontext *dst, GLuint mask ) { if (mask & GL_ACCUM_BUFFER_BIT) { MEMCPY( &dst->Accum, &src->Accum, sizeof(struct gl_accum_attrib) ); } if (mask & GL_COLOR_BUFFER_BIT) { MEMCPY( &dst->Color, &src->Color, sizeof(struct gl_colorbuffer_attrib) ); } if (mask & GL_CURRENT_BIT) { MEMCPY( &dst->Current, &src->Current, sizeof(struct gl_current_attrib) ); } if (mask & GL_DEPTH_BUFFER_BIT) { MEMCPY( &dst->Depth, &src->Depth, sizeof(struct gl_depthbuffer_attrib) ); } if (mask & GL_ENABLE_BIT) { /* no op */ } if (mask & GL_EVAL_BIT) { MEMCPY( &dst->Eval, &src->Eval, sizeof(struct gl_eval_attrib) ); } if (mask & GL_FOG_BIT) { MEMCPY( &dst->Fog, &src->Fog, sizeof(struct gl_fog_attrib) ); } if (mask & GL_HINT_BIT) { MEMCPY( &dst->Hint, &src->Hint, sizeof(struct gl_hint_attrib) ); } if (mask & GL_LIGHTING_BIT) { MEMCPY( &dst->Light, &src->Light, sizeof(struct gl_light_attrib) ); /* gl_reinit_light_attrib( &dst->Light ); */ } if (mask & GL_LINE_BIT) { MEMCPY( &dst->Line, &src->Line, sizeof(struct gl_line_attrib) ); } if (mask & GL_LIST_BIT) { MEMCPY( &dst->List, &src->List, sizeof(struct gl_list_attrib) ); } if (mask & GL_PIXEL_MODE_BIT) { MEMCPY( &dst->Pixel, &src->Pixel, sizeof(struct gl_pixel_attrib) ); } if (mask & GL_POINT_BIT) { MEMCPY( &dst->Point, &src->Point, sizeof(struct gl_point_attrib) ); } if (mask & GL_POLYGON_BIT) { MEMCPY( &dst->Polygon, &src->Polygon, sizeof(struct gl_polygon_attrib) ); } if (mask & GL_POLYGON_STIPPLE_BIT) { /* Use loop instead of MEMCPY due to problem with Portland Group's * C compiler. Reported by John Stone. */ int i; for (i=0;i<32;i++) { dst->PolygonStipple[i] = src->PolygonStipple[i]; } } if (mask & GL_SCISSOR_BIT) { MEMCPY( &dst->Scissor, &src->Scissor, sizeof(struct gl_scissor_attrib) ); } if (mask & GL_STENCIL_BUFFER_BIT) { MEMCPY( &dst->Stencil, &src->Stencil, sizeof(struct gl_stencil_attrib) ); } if (mask & GL_TEXTURE_BIT) { MEMCPY( &dst->Texture, &src->Texture, sizeof(struct gl_texture_attrib) ); } if (mask & GL_TRANSFORM_BIT) { MEMCPY( &dst->Transform, &src->Transform, sizeof(struct gl_transform_attrib) ); } if (mask & GL_VIEWPORT_BIT) { MEMCPY( &dst->Viewport, &src->Viewport, sizeof(struct gl_viewport_attrib) ); } } /* * Set the current context, binding the given frame buffer to the context. */ void gl_make_current( GLcontext *newCtx, GLframebuffer *buffer ) { gl_make_current2( newCtx, buffer, buffer ); } /* * Bind the given context to the given draw-buffer and read-buffer * and make it the current context for this thread. */ void gl_make_current2( GLcontext *newCtx, GLframebuffer *drawBuffer, GLframebuffer *readBuffer ) { #if 0 GLcontext *oldCtx = gl_get_context(); /* Flush the old context */ if (oldCtx) { ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(oldCtx, "gl_make_current"); /* unbind frame buffers from context */ if (oldCtx->DrawBuffer) { oldCtx->DrawBuffer = NULL; } if (oldCtx->ReadBuffer) { oldCtx->ReadBuffer = NULL; } } #endif /* We call this function periodically (just here for now) in * order to detect when multithreading has begun. */ _glapi_check_multithread(); _glapi_set_context((void *) newCtx); ASSERT(gl_get_current_context() == newCtx); if (newCtx) { SET_IMMEDIATE(newCtx, newCtx->input); _glapi_set_dispatch(newCtx->CurrentDispatch); } else { _glapi_set_dispatch(NULL); /* none current */ } if (MESA_VERBOSE) fprintf(stderr, "gl_make_current()\n"); if (newCtx && drawBuffer && readBuffer) { /* TODO: check if newCtx and buffer's visual match??? */ newCtx->DrawBuffer = drawBuffer; newCtx->ReadBuffer = readBuffer; newCtx->NewState = NEW_ALL; /* just to be safe */ gl_update_state( newCtx ); } /* We can use this to help debug user's problems. Tell the to set * the MESA_INFO env variable before running their app. Then the * first time each context is made current we'll print some useful * information. */ if (newCtx && newCtx->FirstTimeCurrent) { if (getenv("MESA_INFO")) { fprintf(stderr, "Mesa GL_VERSION = %s\n", (char *) _mesa_GetString(GL_VERSION)); fprintf(stderr, "Mesa GL_RENDERER = %s\n", (char *) _mesa_GetString(GL_RENDERER)); fprintf(stderr, "Mesa GL_VENDOR = %s\n", (char *) _mesa_GetString(GL_VENDOR)); fprintf(stderr, "Mesa GL_EXTENSIONS = %s\n", (char *) _mesa_GetString(GL_EXTENSIONS)); #if defined(THREADS) fprintf(stderr, "Mesa thread-safe: YES\n"); #else fprintf(stderr, "Mesa thread-safe: NO\n"); #endif #if defined(USE_X86_ASM) fprintf(stderr, "Mesa x86-optimized: YES\n"); #else fprintf(stderr, "Mesa x86-optimized: NO\n"); #endif } newCtx->FirstTimeCurrent = GL_FALSE; } } /* * Return current context handle for the calling thread. * This isn't the fastest way to get the current context. * If you need speed, see the GET_CURRENT_CONTEXT() macro in context.h */ GLcontext *gl_get_current_context( void ) { return (GLcontext *) _glapi_get_context(); } /* * This should be called by device drivers just before they do a * swapbuffers. Any pending rendering commands will be executed. */ void _mesa_swapbuffers(GLcontext *ctx) { FLUSH_VB( ctx, "swap buffers" ); } /* * Return pointer to this context's current API dispatch table. * It'll either be the immediate-mode execute dispatcher or the * display list compile dispatcher. */ struct _glapi_table * _mesa_get_dispatch(GLcontext *ctx) { return ctx->CurrentDispatch; } /**********************************************************************/ /***** Miscellaneous functions *****/ /**********************************************************************/ /* * This function is called when the Mesa user has stumbled into a code * path which may not be implemented fully or correctly. */ void gl_problem( const GLcontext *ctx, const char *s ) { fprintf( stderr, "Mesa implementation error: %s\n", s ); fprintf( stderr, "Report to Mesa bug database at www.mesa3d.org\n" ); (void) ctx; } /* * This is called to inform the user that he or she has tried to do * something illogical or if there's likely a bug in their program * (like enabled depth testing without a depth buffer). */ void gl_warning( const GLcontext *ctx, const char *s ) { GLboolean debug; #ifdef DEBUG debug = GL_TRUE; #else if (getenv("MESA_DEBUG")) { debug = GL_TRUE; } else { debug = GL_FALSE; } #endif if (debug) { fprintf( stderr, "Mesa warning: %s\n", s ); } (void) ctx; } /* * Compile an error into current display list. */ void gl_compile_error( GLcontext *ctx, GLenum error, const char *s ) { if (ctx->CompileFlag) gl_save_error( ctx, error, s ); if (ctx->ExecuteFlag) gl_error( ctx, error, s ); } /* * This is Mesa's error handler. Normally, all that's done is the updating * of the current error value. If Mesa is compiled with -DDEBUG or if the * environment variable "MESA_DEBUG" is defined then a real error message * is printed to stderr. * Input: ctx - the GL context * error - the error value * where - usually the name of function where error was detected */ void gl_error( GLcontext *ctx, GLenum error, const char *where ) { const char *debugEnv = getenv("MESA_DEBUG"); GLboolean debug; #ifdef DEBUG if (debugEnv && strstr(debugEnv, "silent")) debug = GL_FALSE; else debug = GL_TRUE; #else if (debugEnv) debug = GL_TRUE; else debug = GL_FALSE; #endif if (debug) { const char *errstr; switch (error) { case GL_NO_ERROR: errstr = "GL_NO_ERROR"; break; case GL_INVALID_VALUE: errstr = "GL_INVALID_VALUE"; break; case GL_INVALID_ENUM: errstr = "GL_INVALID_ENUM"; break; case GL_INVALID_OPERATION: errstr = "GL_INVALID_OPERATION"; break; case GL_STACK_OVERFLOW: errstr = "GL_STACK_OVERFLOW"; break; case GL_STACK_UNDERFLOW: errstr = "GL_STACK_UNDERFLOW"; break; case GL_OUT_OF_MEMORY: errstr = "GL_OUT_OF_MEMORY"; break; case GL_TABLE_TOO_LARGE: errstr = "GL_TABLE_TOO_LARGE"; break; default: errstr = "unknown"; break; } fprintf(stderr, "Mesa user error: %s in %s\n", errstr, where); } if (ctx->ErrorValue == GL_NO_ERROR) { ctx->ErrorValue = error; } /* Call device driver's error handler, if any. This is used on the Mac. */ if (ctx->Driver.Error) { (*ctx->Driver.Error)( ctx ); } } void _mesa_Finish( void ) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glFinish"); if (ctx->Driver.Finish) { (*ctx->Driver.Finish)( ctx ); } } void _mesa_Flush( void ) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glFlush"); if (ctx->Driver.Flush) { (*ctx->Driver.Flush)( ctx ); } }