| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. |
| * Copyright (C) 2009 VMware, Inc. 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 |
| * THE AUTHORS OR COPYRIGHT HOLDERS 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. |
| */ |
| |
| #include "glheader.h" |
| #include "imports.h" |
| #include "accum.h" |
| #include "arrayobj.h" |
| #include "attrib.h" |
| #include "blend.h" |
| #include "buffers.h" |
| #include "bufferobj.h" |
| #include "clear.h" |
| #include "colormac.h" |
| #include "context.h" |
| #include "depth.h" |
| #include "enable.h" |
| #include "enums.h" |
| #include "fog.h" |
| #include "hint.h" |
| #include "light.h" |
| #include "lines.h" |
| #include "macros.h" |
| #include "matrix.h" |
| #include "multisample.h" |
| #include "points.h" |
| #include "polygon.h" |
| #include "shared.h" |
| #include "scissor.h" |
| #include "stencil.h" |
| #include "texenv.h" |
| #include "texgen.h" |
| #include "texobj.h" |
| #include "texparam.h" |
| #include "texstate.h" |
| #include "varray.h" |
| #include "viewport.h" |
| #include "mtypes.h" |
| #include "main/dispatch.h" |
| #include "hash.h" |
| #include <stdbool.h> |
| |
| |
| /** |
| * glEnable()/glDisable() attribute group (GL_ENABLE_BIT). |
| */ |
| struct gl_enable_attrib |
| { |
| GLboolean AlphaTest; |
| GLboolean AutoNormal; |
| GLboolean Blend; |
| GLbitfield ClipPlanes; |
| GLboolean ColorMaterial; |
| GLboolean CullFace; |
| GLboolean DepthClamp; |
| GLboolean DepthTest; |
| GLboolean Dither; |
| GLboolean Fog; |
| GLboolean Light[MAX_LIGHTS]; |
| GLboolean Lighting; |
| GLboolean LineSmooth; |
| GLboolean LineStipple; |
| GLboolean IndexLogicOp; |
| GLboolean ColorLogicOp; |
| |
| GLboolean Map1Color4; |
| GLboolean Map1Index; |
| GLboolean Map1Normal; |
| GLboolean Map1TextureCoord1; |
| GLboolean Map1TextureCoord2; |
| GLboolean Map1TextureCoord3; |
| GLboolean Map1TextureCoord4; |
| GLboolean Map1Vertex3; |
| GLboolean Map1Vertex4; |
| GLboolean Map2Color4; |
| GLboolean Map2Index; |
| GLboolean Map2Normal; |
| GLboolean Map2TextureCoord1; |
| GLboolean Map2TextureCoord2; |
| GLboolean Map2TextureCoord3; |
| GLboolean Map2TextureCoord4; |
| GLboolean Map2Vertex3; |
| GLboolean Map2Vertex4; |
| |
| GLboolean Normalize; |
| GLboolean PixelTexture; |
| GLboolean PointSmooth; |
| GLboolean PolygonOffsetPoint; |
| GLboolean PolygonOffsetLine; |
| GLboolean PolygonOffsetFill; |
| GLboolean PolygonSmooth; |
| GLboolean PolygonStipple; |
| GLboolean RescaleNormals; |
| GLbitfield Scissor; |
| GLboolean Stencil; |
| GLboolean StencilTwoSide; /* GL_EXT_stencil_two_side */ |
| GLboolean MultisampleEnabled; /* GL_ARB_multisample */ |
| GLboolean SampleAlphaToCoverage; /* GL_ARB_multisample */ |
| GLboolean SampleAlphaToOne; /* GL_ARB_multisample */ |
| GLboolean SampleCoverage; /* GL_ARB_multisample */ |
| GLboolean RasterPositionUnclipped; /* GL_IBM_rasterpos_clip */ |
| |
| GLbitfield Texture[MAX_TEXTURE_UNITS]; |
| GLbitfield TexGen[MAX_TEXTURE_UNITS]; |
| |
| /* GL_ARB_vertex_program */ |
| GLboolean VertexProgram; |
| GLboolean VertexProgramPointSize; |
| GLboolean VertexProgramTwoSide; |
| |
| /* GL_ARB_fragment_program */ |
| GLboolean FragmentProgram; |
| |
| /* GL_ARB_point_sprite / GL_NV_point_sprite */ |
| GLboolean PointSprite; |
| GLboolean FragmentShaderATI; |
| |
| /* GL_ARB_framebuffer_sRGB / GL_EXT_framebuffer_sRGB */ |
| GLboolean sRGBEnabled; |
| }; |
| |
| |
| /** |
| * Node for the attribute stack. |
| */ |
| struct gl_attrib_node |
| { |
| GLbitfield kind; |
| void *data; |
| struct gl_attrib_node *next; |
| }; |
| |
| |
| |
| /** |
| * Special struct for saving/restoring texture state (GL_TEXTURE_BIT) |
| */ |
| struct texture_state |
| { |
| struct gl_texture_attrib Texture; /**< The usual context state */ |
| |
| /** to save per texture object state (wrap modes, filters, etc): */ |
| struct gl_texture_object SavedObj[MAX_TEXTURE_UNITS][NUM_TEXTURE_TARGETS]; |
| |
| /** |
| * To save references to texture objects (so they don't get accidentally |
| * deleted while saved in the attribute stack). |
| */ |
| struct gl_texture_object *SavedTexRef[MAX_TEXTURE_UNITS][NUM_TEXTURE_TARGETS]; |
| |
| /* We need to keep a reference to the shared state. That's where the |
| * default texture objects are kept. We don't want that state to be |
| * freed while the attribute stack contains pointers to any default |
| * texture objects. |
| */ |
| struct gl_shared_state *SharedRef; |
| }; |
| |
| |
| /** |
| * Allocate new attribute node of given type/kind. Attach payload data. |
| * Insert it into the linked list named by 'head'. |
| */ |
| static bool |
| save_attrib_data(struct gl_attrib_node **head, |
| GLbitfield kind, void *payload) |
| { |
| struct gl_attrib_node *n = MALLOC_STRUCT(gl_attrib_node); |
| if (n) { |
| n->kind = kind; |
| n->data = payload; |
| /* insert at head */ |
| n->next = *head; |
| *head = n; |
| } |
| else { |
| /* out of memory! */ |
| return false; |
| } |
| return true; |
| } |
| |
| |
| /** |
| * Helper function for_mesa_PushAttrib for simple attributes. |
| * Allocates memory for attribute data and copies the given attribute data. |
| * \param head head of linked list to insert attribute data into |
| * \param attr_bit one of the GL_<attrib>_BIT flags |
| * \param attr_size number of bytes to allocate for attribute data |
| * \param attr_data the attribute data to copy |
| * \return true for success, false for out of memory |
| */ |
| static bool |
| push_attrib(struct gl_context *ctx, struct gl_attrib_node **head, |
| GLbitfield attr_bit, GLuint attr_size, const void *attr_data) |
| { |
| void *attribute; |
| |
| attribute = malloc(attr_size); |
| if (attribute == NULL) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib"); |
| return false; |
| } |
| |
| if (save_attrib_data(head, attr_bit, attribute)) { |
| memcpy(attribute, attr_data, attr_size); |
| } |
| else { |
| free(attribute); |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib"); |
| return false; |
| } |
| return true; |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_PushAttrib(GLbitfield mask) |
| { |
| struct gl_attrib_node *head; |
| |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if (MESA_VERBOSE & VERBOSE_API) |
| _mesa_debug(ctx, "glPushAttrib %x\n", (int) mask); |
| |
| if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) { |
| _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" ); |
| return; |
| } |
| |
| /* Build linked list of attribute nodes which save all attribute */ |
| /* groups specified by the mask. */ |
| head = NULL; |
| |
| if (mask & GL_ACCUM_BUFFER_BIT) { |
| if (!push_attrib(ctx, &head, GL_ACCUM_BUFFER_BIT, |
| sizeof(struct gl_accum_attrib), |
| (void*)&ctx->Accum)) |
| goto end; |
| } |
| |
| if (mask & GL_COLOR_BUFFER_BIT) { |
| GLuint i; |
| struct gl_colorbuffer_attrib *attr; |
| attr = MALLOC_STRUCT( gl_colorbuffer_attrib ); |
| if (attr == NULL) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib"); |
| goto end; |
| } |
| |
| if (save_attrib_data(&head, GL_COLOR_BUFFER_BIT, attr)) { |
| memcpy(attr, &ctx->Color, sizeof(struct gl_colorbuffer_attrib)); |
| /* push the Draw FBO's DrawBuffer[] state, not ctx->Color.DrawBuffer[] */ |
| for (i = 0; i < ctx->Const.MaxDrawBuffers; i ++) |
| attr->DrawBuffer[i] = ctx->DrawBuffer->ColorDrawBuffer[i]; |
| } |
| else { |
| free(attr); |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib"); |
| goto end; |
| } |
| } |
| |
| if (mask & GL_CURRENT_BIT) { |
| FLUSH_CURRENT(ctx, 0); |
| if (!push_attrib(ctx, &head, GL_CURRENT_BIT, |
| sizeof(struct gl_current_attrib), |
| (void*)&ctx->Current)) |
| goto end; |
| } |
| |
| if (mask & GL_DEPTH_BUFFER_BIT) { |
| if (!push_attrib(ctx, &head, GL_DEPTH_BUFFER_BIT, |
| sizeof(struct gl_depthbuffer_attrib), |
| (void*)&ctx->Depth)) |
| goto end; |
| } |
| |
| if (mask & GL_ENABLE_BIT) { |
| struct gl_enable_attrib *attr; |
| GLuint i; |
| attr = MALLOC_STRUCT( gl_enable_attrib ); |
| if (attr == NULL) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib"); |
| goto end; |
| } |
| |
| /* Copy enable flags from all other attributes into the enable struct. */ |
| attr->AlphaTest = ctx->Color.AlphaEnabled; |
| attr->AutoNormal = ctx->Eval.AutoNormal; |
| attr->Blend = ctx->Color.BlendEnabled; |
| attr->ClipPlanes = ctx->Transform.ClipPlanesEnabled; |
| attr->ColorMaterial = ctx->Light.ColorMaterialEnabled; |
| attr->CullFace = ctx->Polygon.CullFlag; |
| attr->DepthClamp = ctx->Transform.DepthClamp; |
| attr->DepthTest = ctx->Depth.Test; |
| attr->Dither = ctx->Color.DitherFlag; |
| attr->Fog = ctx->Fog.Enabled; |
| for (i = 0; i < ctx->Const.MaxLights; i++) { |
| attr->Light[i] = ctx->Light.Light[i].Enabled; |
| } |
| attr->Lighting = ctx->Light.Enabled; |
| attr->LineSmooth = ctx->Line.SmoothFlag; |
| attr->LineStipple = ctx->Line.StippleFlag; |
| attr->IndexLogicOp = ctx->Color.IndexLogicOpEnabled; |
| attr->ColorLogicOp = ctx->Color.ColorLogicOpEnabled; |
| attr->Map1Color4 = ctx->Eval.Map1Color4; |
| attr->Map1Index = ctx->Eval.Map1Index; |
| attr->Map1Normal = ctx->Eval.Map1Normal; |
| attr->Map1TextureCoord1 = ctx->Eval.Map1TextureCoord1; |
| attr->Map1TextureCoord2 = ctx->Eval.Map1TextureCoord2; |
| attr->Map1TextureCoord3 = ctx->Eval.Map1TextureCoord3; |
| attr->Map1TextureCoord4 = ctx->Eval.Map1TextureCoord4; |
| attr->Map1Vertex3 = ctx->Eval.Map1Vertex3; |
| attr->Map1Vertex4 = ctx->Eval.Map1Vertex4; |
| attr->Map2Color4 = ctx->Eval.Map2Color4; |
| attr->Map2Index = ctx->Eval.Map2Index; |
| attr->Map2Normal = ctx->Eval.Map2Normal; |
| attr->Map2TextureCoord1 = ctx->Eval.Map2TextureCoord1; |
| attr->Map2TextureCoord2 = ctx->Eval.Map2TextureCoord2; |
| attr->Map2TextureCoord3 = ctx->Eval.Map2TextureCoord3; |
| attr->Map2TextureCoord4 = ctx->Eval.Map2TextureCoord4; |
| attr->Map2Vertex3 = ctx->Eval.Map2Vertex3; |
| attr->Map2Vertex4 = ctx->Eval.Map2Vertex4; |
| attr->Normalize = ctx->Transform.Normalize; |
| attr->RasterPositionUnclipped = ctx->Transform.RasterPositionUnclipped; |
| attr->PointSmooth = ctx->Point.SmoothFlag; |
| attr->PointSprite = ctx->Point.PointSprite; |
| attr->PolygonOffsetPoint = ctx->Polygon.OffsetPoint; |
| attr->PolygonOffsetLine = ctx->Polygon.OffsetLine; |
| attr->PolygonOffsetFill = ctx->Polygon.OffsetFill; |
| attr->PolygonSmooth = ctx->Polygon.SmoothFlag; |
| attr->PolygonStipple = ctx->Polygon.StippleFlag; |
| attr->RescaleNormals = ctx->Transform.RescaleNormals; |
| attr->Scissor = ctx->Scissor.EnableFlags; |
| attr->Stencil = ctx->Stencil.Enabled; |
| attr->StencilTwoSide = ctx->Stencil.TestTwoSide; |
| attr->MultisampleEnabled = ctx->Multisample.Enabled; |
| attr->SampleAlphaToCoverage = ctx->Multisample.SampleAlphaToCoverage; |
| attr->SampleAlphaToOne = ctx->Multisample.SampleAlphaToOne; |
| attr->SampleCoverage = ctx->Multisample.SampleCoverage; |
| for (i = 0; i < ctx->Const.MaxTextureUnits; i++) { |
| attr->Texture[i] = ctx->Texture.Unit[i].Enabled; |
| attr->TexGen[i] = ctx->Texture.Unit[i].TexGenEnabled; |
| } |
| /* GL_ARB_vertex_program */ |
| attr->VertexProgram = ctx->VertexProgram.Enabled; |
| attr->VertexProgramPointSize = ctx->VertexProgram.PointSizeEnabled; |
| attr->VertexProgramTwoSide = ctx->VertexProgram.TwoSideEnabled; |
| |
| /* GL_ARB_fragment_program */ |
| attr->FragmentProgram = ctx->FragmentProgram.Enabled; |
| |
| if (!save_attrib_data(&head, GL_ENABLE_BIT, attr)) { |
| free(attr); |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib"); |
| goto end; |
| } |
| |
| /* GL_ARB_framebuffer_sRGB / GL_EXT_framebuffer_sRGB */ |
| attr->sRGBEnabled = ctx->Color.sRGBEnabled; |
| } |
| |
| if (mask & GL_EVAL_BIT) { |
| if (!push_attrib(ctx, &head, GL_EVAL_BIT, |
| sizeof(struct gl_eval_attrib), |
| (void*)&ctx->Eval)) |
| goto end; |
| } |
| |
| if (mask & GL_FOG_BIT) { |
| if (!push_attrib(ctx, &head, GL_FOG_BIT, |
| sizeof(struct gl_fog_attrib), |
| (void*)&ctx->Fog)) |
| goto end; |
| } |
| |
| if (mask & GL_HINT_BIT) { |
| if (!push_attrib(ctx, &head, GL_HINT_BIT, |
| sizeof(struct gl_hint_attrib), |
| (void*)&ctx->Hint)) |
| goto end; |
| } |
| |
| if (mask & GL_LIGHTING_BIT) { |
| FLUSH_CURRENT(ctx, 0); /* flush material changes */ |
| if (!push_attrib(ctx, &head, GL_LIGHTING_BIT, |
| sizeof(struct gl_light_attrib), |
| (void*)&ctx->Light)) |
| goto end; |
| } |
| |
| if (mask & GL_LINE_BIT) { |
| if (!push_attrib(ctx, &head, GL_LINE_BIT, |
| sizeof(struct gl_line_attrib), |
| (void*)&ctx->Line)) |
| goto end; |
| } |
| |
| if (mask & GL_LIST_BIT) { |
| if (!push_attrib(ctx, &head, GL_LIST_BIT, |
| sizeof(struct gl_list_attrib), |
| (void*)&ctx->List)) |
| goto end; |
| } |
| |
| if (mask & GL_PIXEL_MODE_BIT) { |
| struct gl_pixel_attrib *attr; |
| attr = MALLOC_STRUCT( gl_pixel_attrib ); |
| if (attr == NULL) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib"); |
| goto end; |
| } |
| |
| if (save_attrib_data(&head, GL_PIXEL_MODE_BIT, attr)) { |
| memcpy(attr, &ctx->Pixel, sizeof(struct gl_pixel_attrib)); |
| /* push the Read FBO's ReadBuffer state, not ctx->Pixel.ReadBuffer */ |
| attr->ReadBuffer = ctx->ReadBuffer->ColorReadBuffer; |
| } |
| else { |
| free(attr); |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib"); |
| goto end; |
| } |
| } |
| |
| if (mask & GL_POINT_BIT) { |
| if (!push_attrib(ctx, &head, GL_POINT_BIT, |
| sizeof(struct gl_point_attrib), |
| (void*)&ctx->Point)) |
| goto end; |
| } |
| |
| if (mask & GL_POLYGON_BIT) { |
| if (!push_attrib(ctx, &head, GL_POLYGON_BIT, |
| sizeof(struct gl_polygon_attrib), |
| (void*)&ctx->Polygon)) |
| goto end; |
| } |
| |
| if (mask & GL_POLYGON_STIPPLE_BIT) { |
| if (!push_attrib(ctx, &head, GL_POLYGON_STIPPLE_BIT, |
| sizeof(ctx->PolygonStipple), |
| (void*)&ctx->PolygonStipple)) |
| goto end; |
| } |
| |
| if (mask & GL_SCISSOR_BIT) { |
| if (!push_attrib(ctx, &head, GL_SCISSOR_BIT, |
| sizeof(struct gl_scissor_attrib), |
| (void*)&ctx->Scissor)) |
| goto end; |
| } |
| |
| if (mask & GL_STENCIL_BUFFER_BIT) { |
| if (!push_attrib(ctx, &head, GL_STENCIL_BUFFER_BIT, |
| sizeof(struct gl_stencil_attrib), |
| (void*)&ctx->Stencil)) |
| goto end; |
| } |
| |
| if (mask & GL_TEXTURE_BIT) { |
| struct texture_state *texstate = CALLOC_STRUCT(texture_state); |
| GLuint u, tex; |
| |
| if (!texstate) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib(GL_TEXTURE_BIT)"); |
| goto end; |
| } |
| |
| if (!save_attrib_data(&head, GL_TEXTURE_BIT, texstate)) { |
| free(texstate); |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushAttrib(GL_TEXTURE_BIT)"); |
| goto end; |
| } |
| |
| _mesa_lock_context_textures(ctx); |
| |
| /* copy/save the bulk of texture state here */ |
| memcpy(&texstate->Texture, &ctx->Texture, sizeof(ctx->Texture)); |
| |
| /* Save references to the currently bound texture objects so they don't |
| * accidentally get deleted while referenced in the attribute stack. |
| */ |
| for (u = 0; u < ctx->Const.MaxTextureUnits; u++) { |
| for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) { |
| _mesa_reference_texobj(&texstate->SavedTexRef[u][tex], |
| ctx->Texture.Unit[u].CurrentTex[tex]); |
| } |
| } |
| |
| /* copy state/contents of the currently bound texture objects */ |
| for (u = 0; u < ctx->Const.MaxTextureUnits; u++) { |
| for (tex = 0; tex < NUM_TEXTURE_TARGETS; tex++) { |
| _mesa_copy_texture_object(&texstate->SavedObj[u][tex], |
| ctx->Texture.Unit[u].CurrentTex[tex]); |
| } |
| } |
| |
| _mesa_reference_shared_state(ctx, &texstate->SharedRef, ctx->Shared); |
| |
| _mesa_unlock_context_textures(ctx); |
| } |
| |
| if (mask & GL_TRANSFORM_BIT) { |
| if (!push_attrib(ctx, &head, GL_TRANSFORM_BIT, |
| sizeof(struct gl_transform_attrib), |
| (void*)&ctx->Transform)) |
| goto end; |
| } |
| |
| if (mask & GL_VIEWPORT_BIT) { |
| if (!push_attrib(ctx, &head, GL_VIEWPORT_BIT, |
| sizeof(struct gl_viewport_attrib) |
| * ctx->Const.MaxViewports, |
| (void*)&ctx->ViewportArray)) |
| goto end; |
| } |
| |
| /* GL_ARB_multisample */ |
| if (mask & GL_MULTISAMPLE_BIT_ARB) { |
| if (!push_attrib(ctx, &head, GL_MULTISAMPLE_BIT_ARB, |
| sizeof(struct gl_multisample_attrib), |
| (void*)&ctx->Multisample)) |
| goto end; |
| } |
| |
| end: |
| if (head != NULL) { |
| ctx->AttribStack[ctx->AttribStackDepth] = head; |
| ctx->AttribStackDepth++; |
| } |
| } |
| |
| |
| |
| static void |
| pop_enable_group(struct gl_context *ctx, const struct gl_enable_attrib *enable) |
| { |
| const GLuint curTexUnitSave = ctx->Texture.CurrentUnit; |
| GLuint i; |
| |
| #define TEST_AND_UPDATE(VALUE, NEWVALUE, ENUM) \ |
| if ((VALUE) != (NEWVALUE)) { \ |
| _mesa_set_enable( ctx, ENUM, (NEWVALUE) ); \ |
| } |
| |
| TEST_AND_UPDATE(ctx->Color.AlphaEnabled, enable->AlphaTest, GL_ALPHA_TEST); |
| if (ctx->Color.BlendEnabled != enable->Blend) { |
| if (ctx->Extensions.EXT_draw_buffers2) { |
| GLuint i; |
| for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { |
| _mesa_set_enablei(ctx, GL_BLEND, i, (enable->Blend >> i) & 1); |
| } |
| } |
| else { |
| _mesa_set_enable(ctx, GL_BLEND, (enable->Blend & 1)); |
| } |
| } |
| |
| for (i=0;i<ctx->Const.MaxClipPlanes;i++) { |
| const GLuint mask = 1 << i; |
| if ((ctx->Transform.ClipPlanesEnabled & mask) != (enable->ClipPlanes & mask)) |
| _mesa_set_enable(ctx, (GLenum) (GL_CLIP_PLANE0 + i), |
| !!(enable->ClipPlanes & mask)); |
| } |
| |
| TEST_AND_UPDATE(ctx->Light.ColorMaterialEnabled, enable->ColorMaterial, |
| GL_COLOR_MATERIAL); |
| TEST_AND_UPDATE(ctx->Polygon.CullFlag, enable->CullFace, GL_CULL_FACE); |
| TEST_AND_UPDATE(ctx->Transform.DepthClamp, enable->DepthClamp, |
| GL_DEPTH_CLAMP); |
| TEST_AND_UPDATE(ctx->Depth.Test, enable->DepthTest, GL_DEPTH_TEST); |
| TEST_AND_UPDATE(ctx->Color.DitherFlag, enable->Dither, GL_DITHER); |
| TEST_AND_UPDATE(ctx->Fog.Enabled, enable->Fog, GL_FOG); |
| TEST_AND_UPDATE(ctx->Light.Enabled, enable->Lighting, GL_LIGHTING); |
| TEST_AND_UPDATE(ctx->Line.SmoothFlag, enable->LineSmooth, GL_LINE_SMOOTH); |
| TEST_AND_UPDATE(ctx->Line.StippleFlag, enable->LineStipple, |
| GL_LINE_STIPPLE); |
| TEST_AND_UPDATE(ctx->Color.IndexLogicOpEnabled, enable->IndexLogicOp, |
| GL_INDEX_LOGIC_OP); |
| TEST_AND_UPDATE(ctx->Color.ColorLogicOpEnabled, enable->ColorLogicOp, |
| GL_COLOR_LOGIC_OP); |
| |
| TEST_AND_UPDATE(ctx->Eval.Map1Color4, enable->Map1Color4, GL_MAP1_COLOR_4); |
| TEST_AND_UPDATE(ctx->Eval.Map1Index, enable->Map1Index, GL_MAP1_INDEX); |
| TEST_AND_UPDATE(ctx->Eval.Map1Normal, enable->Map1Normal, GL_MAP1_NORMAL); |
| TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord1, enable->Map1TextureCoord1, |
| GL_MAP1_TEXTURE_COORD_1); |
| TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord2, enable->Map1TextureCoord2, |
| GL_MAP1_TEXTURE_COORD_2); |
| TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord3, enable->Map1TextureCoord3, |
| GL_MAP1_TEXTURE_COORD_3); |
| TEST_AND_UPDATE(ctx->Eval.Map1TextureCoord4, enable->Map1TextureCoord4, |
| GL_MAP1_TEXTURE_COORD_4); |
| TEST_AND_UPDATE(ctx->Eval.Map1Vertex3, enable->Map1Vertex3, |
| GL_MAP1_VERTEX_3); |
| TEST_AND_UPDATE(ctx->Eval.Map1Vertex4, enable->Map1Vertex4, |
| GL_MAP1_VERTEX_4); |
| |
| TEST_AND_UPDATE(ctx->Eval.Map2Color4, enable->Map2Color4, GL_MAP2_COLOR_4); |
| TEST_AND_UPDATE(ctx->Eval.Map2Index, enable->Map2Index, GL_MAP2_INDEX); |
| TEST_AND_UPDATE(ctx->Eval.Map2Normal, enable->Map2Normal, GL_MAP2_NORMAL); |
| TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord1, enable->Map2TextureCoord1, |
| GL_MAP2_TEXTURE_COORD_1); |
| TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord2, enable->Map2TextureCoord2, |
| GL_MAP2_TEXTURE_COORD_2); |
| TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord3, enable->Map2TextureCoord3, |
| GL_MAP2_TEXTURE_COORD_3); |
| TEST_AND_UPDATE(ctx->Eval.Map2TextureCoord4, enable->Map2TextureCoord4, |
| GL_MAP2_TEXTURE_COORD_4); |
| TEST_AND_UPDATE(ctx->Eval.Map2Vertex3, enable->Map2Vertex3, |
| GL_MAP2_VERTEX_3); |
| TEST_AND_UPDATE(ctx->Eval.Map2Vertex4, enable->Map2Vertex4, |
| GL_MAP2_VERTEX_4); |
| |
| TEST_AND_UPDATE(ctx->Eval.AutoNormal, enable->AutoNormal, GL_AUTO_NORMAL); |
| TEST_AND_UPDATE(ctx->Transform.Normalize, enable->Normalize, GL_NORMALIZE); |
| TEST_AND_UPDATE(ctx->Transform.RescaleNormals, enable->RescaleNormals, |
| GL_RESCALE_NORMAL_EXT); |
| TEST_AND_UPDATE(ctx->Transform.RasterPositionUnclipped, |
| enable->RasterPositionUnclipped, |
| GL_RASTER_POSITION_UNCLIPPED_IBM); |
| TEST_AND_UPDATE(ctx->Point.SmoothFlag, enable->PointSmooth, |
| GL_POINT_SMOOTH); |
| if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite) { |
| TEST_AND_UPDATE(ctx->Point.PointSprite, enable->PointSprite, |
| GL_POINT_SPRITE_NV); |
| } |
| TEST_AND_UPDATE(ctx->Polygon.OffsetPoint, enable->PolygonOffsetPoint, |
| GL_POLYGON_OFFSET_POINT); |
| TEST_AND_UPDATE(ctx->Polygon.OffsetLine, enable->PolygonOffsetLine, |
| GL_POLYGON_OFFSET_LINE); |
| TEST_AND_UPDATE(ctx->Polygon.OffsetFill, enable->PolygonOffsetFill, |
| GL_POLYGON_OFFSET_FILL); |
| TEST_AND_UPDATE(ctx->Polygon.SmoothFlag, enable->PolygonSmooth, |
| GL_POLYGON_SMOOTH); |
| TEST_AND_UPDATE(ctx->Polygon.StippleFlag, enable->PolygonStipple, |
| GL_POLYGON_STIPPLE); |
| if (ctx->Scissor.EnableFlags != enable->Scissor) { |
| unsigned i; |
| |
| for (i = 0; i < ctx->Const.MaxViewports; i++) { |
| _mesa_set_enablei(ctx, GL_SCISSOR_TEST, i, (enable->Scissor >> i) & 1); |
| } |
| } |
| TEST_AND_UPDATE(ctx->Stencil.Enabled, enable->Stencil, GL_STENCIL_TEST); |
| if (ctx->Extensions.EXT_stencil_two_side) { |
| TEST_AND_UPDATE(ctx->Stencil.TestTwoSide, enable->StencilTwoSide, GL_STENCIL_TEST_TWO_SIDE_EXT); |
| } |
| TEST_AND_UPDATE(ctx->Multisample.Enabled, enable->MultisampleEnabled, |
| GL_MULTISAMPLE_ARB); |
| TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage, |
| enable->SampleAlphaToCoverage, |
| GL_SAMPLE_ALPHA_TO_COVERAGE_ARB); |
| TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne, |
| enable->SampleAlphaToOne, |
| GL_SAMPLE_ALPHA_TO_ONE_ARB); |
| TEST_AND_UPDATE(ctx->Multisample.SampleCoverage, |
| enable->SampleCoverage, |
| GL_SAMPLE_COVERAGE_ARB); |
| /* GL_ARB_vertex_program */ |
| TEST_AND_UPDATE(ctx->VertexProgram.Enabled, |
| enable->VertexProgram, |
| GL_VERTEX_PROGRAM_ARB); |
| TEST_AND_UPDATE(ctx->VertexProgram.PointSizeEnabled, |
| enable->VertexProgramPointSize, |
| GL_VERTEX_PROGRAM_POINT_SIZE_ARB); |
| TEST_AND_UPDATE(ctx->VertexProgram.TwoSideEnabled, |
| enable->VertexProgramTwoSide, |
| GL_VERTEX_PROGRAM_TWO_SIDE_ARB); |
| |
| /* GL_ARB_fragment_program */ |
| TEST_AND_UPDATE(ctx->FragmentProgram.Enabled, |
| enable->FragmentProgram, |
| GL_FRAGMENT_PROGRAM_ARB); |
| |
| /* GL_ARB_framebuffer_sRGB / GL_EXT_framebuffer_sRGB */ |
| TEST_AND_UPDATE(ctx->Color.sRGBEnabled, enable->sRGBEnabled, |
| GL_FRAMEBUFFER_SRGB); |
| |
| /* texture unit enables */ |
| for (i = 0; i < ctx->Const.MaxTextureUnits; i++) { |
| const GLbitfield enabled = enable->Texture[i]; |
| const GLbitfield genEnabled = enable->TexGen[i]; |
| |
| if (ctx->Texture.Unit[i].Enabled != enabled) { |
| _mesa_ActiveTexture(GL_TEXTURE0 + i); |
| |
| _mesa_set_enable(ctx, GL_TEXTURE_1D, !!(enabled & TEXTURE_1D_BIT)); |
| _mesa_set_enable(ctx, GL_TEXTURE_2D, !!(enabled & TEXTURE_2D_BIT)); |
| _mesa_set_enable(ctx, GL_TEXTURE_3D, !!(enabled & TEXTURE_3D_BIT)); |
| if (ctx->Extensions.NV_texture_rectangle) { |
| _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_ARB, |
| !!(enabled & TEXTURE_RECT_BIT)); |
| } |
| if (ctx->Extensions.ARB_texture_cube_map) { |
| _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP, |
| !!(enabled & TEXTURE_CUBE_BIT)); |
| } |
| } |
| |
| if (ctx->Texture.Unit[i].TexGenEnabled != genEnabled) { |
| _mesa_ActiveTexture(GL_TEXTURE0 + i); |
| _mesa_set_enable(ctx, GL_TEXTURE_GEN_S, !!(genEnabled & S_BIT)); |
| _mesa_set_enable(ctx, GL_TEXTURE_GEN_T, !!(genEnabled & T_BIT)); |
| _mesa_set_enable(ctx, GL_TEXTURE_GEN_R, !!(genEnabled & R_BIT)); |
| _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, !!(genEnabled & Q_BIT)); |
| } |
| } |
| |
| _mesa_ActiveTexture(GL_TEXTURE0 + curTexUnitSave); |
| } |
| |
| |
| /** |
| * Pop/restore texture attribute/group state. |
| */ |
| static void |
| pop_texture_group(struct gl_context *ctx, struct texture_state *texstate) |
| { |
| GLuint u; |
| |
| _mesa_lock_context_textures(ctx); |
| |
| for (u = 0; u < ctx->Const.MaxTextureUnits; u++) { |
| const struct gl_texture_unit *unit = &texstate->Texture.Unit[u]; |
| GLuint tgt; |
| |
| _mesa_ActiveTexture(GL_TEXTURE0_ARB + u); |
| _mesa_set_enable(ctx, GL_TEXTURE_1D, !!(unit->Enabled & TEXTURE_1D_BIT)); |
| _mesa_set_enable(ctx, GL_TEXTURE_2D, !!(unit->Enabled & TEXTURE_2D_BIT)); |
| _mesa_set_enable(ctx, GL_TEXTURE_3D, !!(unit->Enabled & TEXTURE_3D_BIT)); |
| if (ctx->Extensions.ARB_texture_cube_map) { |
| _mesa_set_enable(ctx, GL_TEXTURE_CUBE_MAP_ARB, |
| !!(unit->Enabled & TEXTURE_CUBE_BIT)); |
| } |
| if (ctx->Extensions.NV_texture_rectangle) { |
| _mesa_set_enable(ctx, GL_TEXTURE_RECTANGLE_NV, |
| !!(unit->Enabled & TEXTURE_RECT_BIT)); |
| } |
| _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->EnvMode); |
| _mesa_TexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, unit->EnvColor); |
| _mesa_TexGeni(GL_S, GL_TEXTURE_GEN_MODE, unit->GenS.Mode); |
| _mesa_TexGeni(GL_T, GL_TEXTURE_GEN_MODE, unit->GenT.Mode); |
| _mesa_TexGeni(GL_R, GL_TEXTURE_GEN_MODE, unit->GenR.Mode); |
| _mesa_TexGeni(GL_Q, GL_TEXTURE_GEN_MODE, unit->GenQ.Mode); |
| _mesa_TexGenfv(GL_S, GL_OBJECT_PLANE, unit->GenS.ObjectPlane); |
| _mesa_TexGenfv(GL_T, GL_OBJECT_PLANE, unit->GenT.ObjectPlane); |
| _mesa_TexGenfv(GL_R, GL_OBJECT_PLANE, unit->GenR.ObjectPlane); |
| _mesa_TexGenfv(GL_Q, GL_OBJECT_PLANE, unit->GenQ.ObjectPlane); |
| /* Eye plane done differently to avoid re-transformation */ |
| { |
| struct gl_texture_unit *destUnit = &ctx->Texture.Unit[u]; |
| COPY_4FV(destUnit->GenS.EyePlane, unit->GenS.EyePlane); |
| COPY_4FV(destUnit->GenT.EyePlane, unit->GenT.EyePlane); |
| COPY_4FV(destUnit->GenR.EyePlane, unit->GenR.EyePlane); |
| COPY_4FV(destUnit->GenQ.EyePlane, unit->GenQ.EyePlane); |
| if (ctx->Driver.TexGen) { |
| ctx->Driver.TexGen(ctx, GL_S, GL_EYE_PLANE, unit->GenS.EyePlane); |
| ctx->Driver.TexGen(ctx, GL_T, GL_EYE_PLANE, unit->GenT.EyePlane); |
| ctx->Driver.TexGen(ctx, GL_R, GL_EYE_PLANE, unit->GenR.EyePlane); |
| ctx->Driver.TexGen(ctx, GL_Q, GL_EYE_PLANE, unit->GenQ.EyePlane); |
| } |
| } |
| _mesa_set_enable(ctx, GL_TEXTURE_GEN_S, !!(unit->TexGenEnabled & S_BIT)); |
| _mesa_set_enable(ctx, GL_TEXTURE_GEN_T, !!(unit->TexGenEnabled & T_BIT)); |
| _mesa_set_enable(ctx, GL_TEXTURE_GEN_R, !!(unit->TexGenEnabled & R_BIT)); |
| _mesa_set_enable(ctx, GL_TEXTURE_GEN_Q, !!(unit->TexGenEnabled & Q_BIT)); |
| _mesa_TexEnvf(GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, |
| unit->LodBias); |
| _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, |
| unit->Combine.ModeRGB); |
| _mesa_TexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, |
| unit->Combine.ModeA); |
| { |
| const GLuint n = ctx->Extensions.NV_texture_env_combine4 ? 4 : 3; |
| GLuint i; |
| for (i = 0; i < n; i++) { |
| _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB + i, |
| unit->Combine.SourceRGB[i]); |
| _mesa_TexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA + i, |
| unit->Combine.SourceA[i]); |
| _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB + i, |
| unit->Combine.OperandRGB[i]); |
| _mesa_TexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA + i, |
| unit->Combine.OperandA[i]); |
| } |
| } |
| _mesa_TexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE, |
| 1 << unit->Combine.ScaleShiftRGB); |
| _mesa_TexEnvi(GL_TEXTURE_ENV, GL_ALPHA_SCALE, |
| 1 << unit->Combine.ScaleShiftA); |
| |
| /* Restore texture object state for each target */ |
| for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) { |
| const struct gl_texture_object *obj = NULL; |
| const struct gl_sampler_object *samp; |
| GLenum target; |
| |
| obj = &texstate->SavedObj[u][tgt]; |
| |
| /* don't restore state for unsupported targets to prevent |
| * raising GL errors. |
| */ |
| if (obj->Target == GL_TEXTURE_CUBE_MAP_ARB && |
| !ctx->Extensions.ARB_texture_cube_map) { |
| continue; |
| } |
| else if (obj->Target == GL_TEXTURE_RECTANGLE_NV && |
| !ctx->Extensions.NV_texture_rectangle) { |
| continue; |
| } |
| else if ((obj->Target == GL_TEXTURE_1D_ARRAY_EXT || |
| obj->Target == GL_TEXTURE_2D_ARRAY_EXT) && |
| !ctx->Extensions.EXT_texture_array) { |
| continue; |
| } |
| else if (obj->Target == GL_TEXTURE_CUBE_MAP_ARRAY && |
| !ctx->Extensions.ARB_texture_cube_map_array) { |
| continue; |
| } else if (obj->Target == GL_TEXTURE_BUFFER) |
| continue; |
| else if (obj->Target == GL_TEXTURE_EXTERNAL_OES) |
| continue; |
| else if (obj->Target == GL_TEXTURE_2D_MULTISAMPLE || |
| obj->Target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY) |
| continue; |
| |
| target = obj->Target; |
| |
| _mesa_BindTexture(target, obj->Name); |
| |
| samp = &obj->Sampler; |
| |
| _mesa_TexParameterfv(target, GL_TEXTURE_BORDER_COLOR, samp->BorderColor.f); |
| _mesa_TexParameteri(target, GL_TEXTURE_WRAP_S, samp->WrapS); |
| _mesa_TexParameteri(target, GL_TEXTURE_WRAP_T, samp->WrapT); |
| _mesa_TexParameteri(target, GL_TEXTURE_WRAP_R, samp->WrapR); |
| _mesa_TexParameteri(target, GL_TEXTURE_MIN_FILTER, samp->MinFilter); |
| _mesa_TexParameteri(target, GL_TEXTURE_MAG_FILTER, samp->MagFilter); |
| _mesa_TexParameterf(target, GL_TEXTURE_MIN_LOD, samp->MinLod); |
| _mesa_TexParameterf(target, GL_TEXTURE_MAX_LOD, samp->MaxLod); |
| _mesa_TexParameterf(target, GL_TEXTURE_LOD_BIAS, samp->LodBias); |
| _mesa_TexParameterf(target, GL_TEXTURE_PRIORITY, obj->Priority); |
| _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, obj->BaseLevel); |
| if (target != GL_TEXTURE_RECTANGLE_ARB) |
| _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, obj->MaxLevel); |
| if (ctx->Extensions.EXT_texture_filter_anisotropic) { |
| _mesa_TexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, |
| samp->MaxAnisotropy); |
| } |
| if (ctx->Extensions.ARB_shadow) { |
| _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_MODE, |
| samp->CompareMode); |
| _mesa_TexParameteri(target, GL_TEXTURE_COMPARE_FUNC, |
| samp->CompareFunc); |
| } |
| if (ctx->Extensions.ARB_depth_texture) |
| _mesa_TexParameteri(target, GL_DEPTH_TEXTURE_MODE, obj->DepthMode); |
| } |
| |
| /* remove saved references to the texture objects */ |
| for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) { |
| _mesa_reference_texobj(&texstate->SavedTexRef[u][tgt], NULL); |
| } |
| } |
| |
| _mesa_ActiveTexture(GL_TEXTURE0_ARB + texstate->Texture.CurrentUnit); |
| |
| _mesa_reference_shared_state(ctx, &texstate->SharedRef, NULL); |
| |
| _mesa_unlock_context_textures(ctx); |
| } |
| |
| |
| /* |
| * This function is kind of long just because we have to call a lot |
| * of device driver functions to update device driver state. |
| * |
| * XXX As it is now, most of the pop-code calls immediate-mode Mesa functions |
| * in order to restore GL state. This isn't terribly efficient but it |
| * ensures that dirty flags and any derived state gets updated correctly. |
| * We could at least check if the value to restore equals the current value |
| * and then skip the Mesa call. |
| */ |
| void GLAPIENTRY |
| _mesa_PopAttrib(void) |
| { |
| struct gl_attrib_node *attr, *next; |
| GET_CURRENT_CONTEXT(ctx); |
| FLUSH_VERTICES(ctx, 0); |
| |
| if (ctx->AttribStackDepth == 0) { |
| _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopAttrib" ); |
| return; |
| } |
| |
| ctx->AttribStackDepth--; |
| attr = ctx->AttribStack[ctx->AttribStackDepth]; |
| |
| while (attr) { |
| |
| if (MESA_VERBOSE & VERBOSE_API) { |
| _mesa_debug(ctx, "glPopAttrib %s\n", |
| _mesa_lookup_enum_by_nr(attr->kind)); |
| } |
| |
| switch (attr->kind) { |
| case GL_ACCUM_BUFFER_BIT: |
| { |
| const struct gl_accum_attrib *accum; |
| accum = (const struct gl_accum_attrib *) attr->data; |
| _mesa_ClearAccum(accum->ClearColor[0], |
| accum->ClearColor[1], |
| accum->ClearColor[2], |
| accum->ClearColor[3]); |
| } |
| break; |
| case GL_COLOR_BUFFER_BIT: |
| { |
| const struct gl_colorbuffer_attrib *color; |
| |
| color = (const struct gl_colorbuffer_attrib *) attr->data; |
| _mesa_ClearIndex((GLfloat) color->ClearIndex); |
| _mesa_ClearColor(color->ClearColor.f[0], |
| color->ClearColor.f[1], |
| color->ClearColor.f[2], |
| color->ClearColor.f[3]); |
| _mesa_IndexMask(color->IndexMask); |
| if (!ctx->Extensions.EXT_draw_buffers2) { |
| _mesa_ColorMask((GLboolean) (color->ColorMask[0][0] != 0), |
| (GLboolean) (color->ColorMask[0][1] != 0), |
| (GLboolean) (color->ColorMask[0][2] != 0), |
| (GLboolean) (color->ColorMask[0][3] != 0)); |
| } |
| else { |
| GLuint i; |
| for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { |
| _mesa_ColorMaski(i, |
| (GLboolean) (color->ColorMask[i][0] != 0), |
| (GLboolean) (color->ColorMask[i][1] != 0), |
| (GLboolean) (color->ColorMask[i][2] != 0), |
| (GLboolean) (color->ColorMask[i][3] != 0)); |
| } |
| } |
| { |
| /* Need to determine if more than one color output is |
| * specified. If so, call glDrawBuffersARB, else call |
| * glDrawBuffer(). This is a subtle, but essential point |
| * since GL_FRONT (for example) is illegal for the former |
| * function, but legal for the later. |
| */ |
| GLboolean multipleBuffers = GL_FALSE; |
| GLuint i; |
| |
| for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) { |
| if (color->DrawBuffer[i] != GL_NONE) { |
| multipleBuffers = GL_TRUE; |
| break; |
| } |
| } |
| /* Call the API_level functions, not _mesa_drawbuffers() |
| * since we need to do error checking on the pop'd |
| * GL_DRAW_BUFFER. |
| * Ex: if GL_FRONT were pushed, but we're popping with a |
| * user FBO bound, GL_FRONT will be illegal and we'll need |
| * to record that error. Per OpenGL ARB decision. |
| */ |
| if (multipleBuffers) |
| _mesa_DrawBuffers(ctx->Const.MaxDrawBuffers, |
| color->DrawBuffer); |
| else |
| _mesa_DrawBuffer(color->DrawBuffer[0]); |
| } |
| _mesa_set_enable(ctx, GL_ALPHA_TEST, color->AlphaEnabled); |
| _mesa_AlphaFunc(color->AlphaFunc, color->AlphaRefUnclamped); |
| if (ctx->Color.BlendEnabled != color->BlendEnabled) { |
| if (ctx->Extensions.EXT_draw_buffers2) { |
| GLuint i; |
| for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { |
| _mesa_set_enablei(ctx, GL_BLEND, i, |
| (color->BlendEnabled >> i) & 1); |
| } |
| } |
| else { |
| _mesa_set_enable(ctx, GL_BLEND, (color->BlendEnabled & 1)); |
| } |
| } |
| if (ctx->Color._BlendFuncPerBuffer || |
| ctx->Color._BlendEquationPerBuffer) { |
| /* set blend per buffer */ |
| GLuint buf; |
| for (buf = 0; buf < ctx->Const.MaxDrawBuffers; buf++) { |
| _mesa_BlendFuncSeparateiARB(buf, color->Blend[buf].SrcRGB, |
| color->Blend[buf].DstRGB, |
| color->Blend[buf].SrcA, |
| color->Blend[buf].DstA); |
| _mesa_BlendEquationSeparateiARB(buf, |
| color->Blend[buf].EquationRGB, |
| color->Blend[buf].EquationA); |
| } |
| } |
| else { |
| /* set same blend modes for all buffers */ |
| _mesa_BlendFuncSeparate(color->Blend[0].SrcRGB, |
| color->Blend[0].DstRGB, |
| color->Blend[0].SrcA, |
| color->Blend[0].DstA); |
| /* This special case is because glBlendEquationSeparateEXT |
| * cannot take GL_LOGIC_OP as a parameter. |
| */ |
| if (color->Blend[0].EquationRGB == |
| color->Blend[0].EquationA) { |
| _mesa_BlendEquation(color->Blend[0].EquationRGB); |
| } |
| else { |
| _mesa_BlendEquationSeparate( |
| color->Blend[0].EquationRGB, |
| color->Blend[0].EquationA); |
| } |
| } |
| _mesa_BlendColor(color->BlendColorUnclamped[0], |
| color->BlendColorUnclamped[1], |
| color->BlendColorUnclamped[2], |
| color->BlendColorUnclamped[3]); |
| _mesa_LogicOp(color->LogicOp); |
| _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP, |
| color->ColorLogicOpEnabled); |
| _mesa_set_enable(ctx, GL_INDEX_LOGIC_OP, |
| color->IndexLogicOpEnabled); |
| _mesa_set_enable(ctx, GL_DITHER, color->DitherFlag); |
| if (ctx->Extensions.ARB_color_buffer_float) |
| _mesa_ClampColor(GL_CLAMP_FRAGMENT_COLOR_ARB, |
| color->ClampFragmentColor); |
| _mesa_ClampColor(GL_CLAMP_READ_COLOR_ARB, color->ClampReadColor); |
| |
| /* GL_ARB_framebuffer_sRGB / GL_EXT_framebuffer_sRGB */ |
| if (ctx->Extensions.EXT_framebuffer_sRGB) |
| _mesa_set_enable(ctx, GL_FRAMEBUFFER_SRGB, color->sRGBEnabled); |
| } |
| break; |
| case GL_CURRENT_BIT: |
| FLUSH_CURRENT( ctx, 0 ); |
| memcpy( &ctx->Current, attr->data, |
| sizeof(struct gl_current_attrib) ); |
| break; |
| case GL_DEPTH_BUFFER_BIT: |
| { |
| const struct gl_depthbuffer_attrib *depth; |
| depth = (const struct gl_depthbuffer_attrib *) attr->data; |
| _mesa_DepthFunc(depth->Func); |
| _mesa_ClearDepth(depth->Clear); |
| _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test); |
| _mesa_DepthMask(depth->Mask); |
| } |
| break; |
| case GL_ENABLE_BIT: |
| { |
| const struct gl_enable_attrib *enable; |
| enable = (const struct gl_enable_attrib *) attr->data; |
| pop_enable_group(ctx, enable); |
| ctx->NewState |= _NEW_ALL; |
| } |
| break; |
| case GL_EVAL_BIT: |
| memcpy( &ctx->Eval, attr->data, sizeof(struct gl_eval_attrib) ); |
| ctx->NewState |= _NEW_EVAL; |
| break; |
| case GL_FOG_BIT: |
| { |
| const struct gl_fog_attrib *fog; |
| fog = (const struct gl_fog_attrib *) attr->data; |
| _mesa_set_enable(ctx, GL_FOG, fog->Enabled); |
| _mesa_Fogfv(GL_FOG_COLOR, fog->Color); |
| _mesa_Fogf(GL_FOG_DENSITY, fog->Density); |
| _mesa_Fogf(GL_FOG_START, fog->Start); |
| _mesa_Fogf(GL_FOG_END, fog->End); |
| _mesa_Fogf(GL_FOG_INDEX, fog->Index); |
| _mesa_Fogi(GL_FOG_MODE, fog->Mode); |
| } |
| break; |
| case GL_HINT_BIT: |
| { |
| const struct gl_hint_attrib *hint; |
| hint = (const struct gl_hint_attrib *) attr->data; |
| _mesa_Hint(GL_PERSPECTIVE_CORRECTION_HINT, |
| hint->PerspectiveCorrection ); |
| _mesa_Hint(GL_POINT_SMOOTH_HINT, hint->PointSmooth); |
| _mesa_Hint(GL_LINE_SMOOTH_HINT, hint->LineSmooth); |
| _mesa_Hint(GL_POLYGON_SMOOTH_HINT, hint->PolygonSmooth); |
| _mesa_Hint(GL_FOG_HINT, hint->Fog); |
| _mesa_Hint(GL_TEXTURE_COMPRESSION_HINT_ARB, |
| hint->TextureCompression); |
| } |
| break; |
| case GL_LIGHTING_BIT: |
| { |
| GLuint i; |
| const struct gl_light_attrib *light; |
| light = (const struct gl_light_attrib *) attr->data; |
| /* lighting enable */ |
| _mesa_set_enable(ctx, GL_LIGHTING, light->Enabled); |
| /* per-light state */ |
| if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) |
| _math_matrix_analyse( ctx->ModelviewMatrixStack.Top ); |
| |
| for (i = 0; i < ctx->Const.MaxLights; i++) { |
| const struct gl_light *l = &light->Light[i]; |
| _mesa_set_enable(ctx, GL_LIGHT0 + i, l->Enabled); |
| _mesa_light(ctx, i, GL_AMBIENT, l->Ambient); |
| _mesa_light(ctx, i, GL_DIFFUSE, l->Diffuse); |
| _mesa_light(ctx, i, GL_SPECULAR, l->Specular ); |
| _mesa_light(ctx, i, GL_POSITION, l->EyePosition); |
| _mesa_light(ctx, i, GL_SPOT_DIRECTION, l->SpotDirection); |
| { |
| GLfloat p[4] = { 0 }; |
| p[0] = l->SpotExponent; |
| _mesa_light(ctx, i, GL_SPOT_EXPONENT, p); |
| } |
| { |
| GLfloat p[4] = { 0 }; |
| p[0] = l->SpotCutoff; |
| _mesa_light(ctx, i, GL_SPOT_CUTOFF, p); |
| } |
| { |
| GLfloat p[4] = { 0 }; |
| p[0] = l->ConstantAttenuation; |
| _mesa_light(ctx, i, GL_CONSTANT_ATTENUATION, p); |
| } |
| { |
| GLfloat p[4] = { 0 }; |
| p[0] = l->LinearAttenuation; |
| _mesa_light(ctx, i, GL_LINEAR_ATTENUATION, p); |
| } |
| { |
| GLfloat p[4] = { 0 }; |
| p[0] = l->QuadraticAttenuation; |
| _mesa_light(ctx, i, GL_QUADRATIC_ATTENUATION, p); |
| } |
| } |
| /* light model */ |
| _mesa_LightModelfv(GL_LIGHT_MODEL_AMBIENT, |
| light->Model.Ambient); |
| _mesa_LightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER, |
| (GLfloat) light->Model.LocalViewer); |
| _mesa_LightModelf(GL_LIGHT_MODEL_TWO_SIDE, |
| (GLfloat) light->Model.TwoSide); |
| _mesa_LightModelf(GL_LIGHT_MODEL_COLOR_CONTROL, |
| (GLfloat) light->Model.ColorControl); |
| /* shade model */ |
| _mesa_ShadeModel(light->ShadeModel); |
| /* color material */ |
| _mesa_ColorMaterial(light->ColorMaterialFace, |
| light->ColorMaterialMode); |
| _mesa_set_enable(ctx, GL_COLOR_MATERIAL, |
| light->ColorMaterialEnabled); |
| /* materials */ |
| memcpy(&ctx->Light.Material, &light->Material, |
| sizeof(struct gl_material)); |
| if (ctx->Extensions.ARB_color_buffer_float) { |
| _mesa_ClampColor(GL_CLAMP_VERTEX_COLOR_ARB, |
| light->ClampVertexColor); |
| } |
| } |
| break; |
| case GL_LINE_BIT: |
| { |
| const struct gl_line_attrib *line; |
| line = (const struct gl_line_attrib *) attr->data; |
| _mesa_set_enable(ctx, GL_LINE_SMOOTH, line->SmoothFlag); |
| _mesa_set_enable(ctx, GL_LINE_STIPPLE, line->StippleFlag); |
| _mesa_LineStipple(line->StippleFactor, line->StipplePattern); |
| _mesa_LineWidth(line->Width); |
| } |
| break; |
| case GL_LIST_BIT: |
| memcpy( &ctx->List, attr->data, sizeof(struct gl_list_attrib) ); |
| break; |
| case GL_PIXEL_MODE_BIT: |
| memcpy( &ctx->Pixel, attr->data, sizeof(struct gl_pixel_attrib) ); |
| /* XXX what other pixel state needs to be set by function calls? */ |
| _mesa_ReadBuffer(ctx->Pixel.ReadBuffer); |
| ctx->NewState |= _NEW_PIXEL; |
| break; |
| case GL_POINT_BIT: |
| { |
| const struct gl_point_attrib *point; |
| point = (const struct gl_point_attrib *) attr->data; |
| _mesa_PointSize(point->Size); |
| _mesa_set_enable(ctx, GL_POINT_SMOOTH, point->SmoothFlag); |
| if (ctx->Extensions.EXT_point_parameters) { |
| _mesa_PointParameterfv(GL_DISTANCE_ATTENUATION_EXT, |
| point->Params); |
| _mesa_PointParameterf(GL_POINT_SIZE_MIN_EXT, |
| point->MinSize); |
| _mesa_PointParameterf(GL_POINT_SIZE_MAX_EXT, |
| point->MaxSize); |
| _mesa_PointParameterf(GL_POINT_FADE_THRESHOLD_SIZE_EXT, |
| point->Threshold); |
| } |
| if (ctx->Extensions.NV_point_sprite |
| || ctx->Extensions.ARB_point_sprite) { |
| GLuint u; |
| for (u = 0; u < ctx->Const.MaxTextureUnits; u++) { |
| _mesa_TexEnvi(GL_POINT_SPRITE_NV, GL_COORD_REPLACE_NV, |
| (GLint) point->CoordReplace[u]); |
| } |
| _mesa_set_enable(ctx, GL_POINT_SPRITE_NV,point->PointSprite); |
| if (ctx->Extensions.NV_point_sprite) |
| _mesa_PointParameteri(GL_POINT_SPRITE_R_MODE_NV, |
| ctx->Point.SpriteRMode); |
| |
| if ((ctx->API == API_OPENGL_COMPAT && ctx->Version >= 20) |
| || ctx->API == API_OPENGL_CORE) |
| _mesa_PointParameterf(GL_POINT_SPRITE_COORD_ORIGIN, |
| (GLfloat)ctx->Point.SpriteOrigin); |
| } |
| } |
| break; |
| case GL_POLYGON_BIT: |
| { |
| const struct gl_polygon_attrib *polygon; |
| polygon = (const struct gl_polygon_attrib *) attr->data; |
| _mesa_CullFace(polygon->CullFaceMode); |
| _mesa_FrontFace(polygon->FrontFace); |
| _mesa_PolygonMode(GL_FRONT, polygon->FrontMode); |
| _mesa_PolygonMode(GL_BACK, polygon->BackMode); |
| _mesa_PolygonOffset(polygon->OffsetFactor, |
| polygon->OffsetUnits); |
| _mesa_set_enable(ctx, GL_POLYGON_SMOOTH, polygon->SmoothFlag); |
| _mesa_set_enable(ctx, GL_POLYGON_STIPPLE, polygon->StippleFlag); |
| _mesa_set_enable(ctx, GL_CULL_FACE, polygon->CullFlag); |
| _mesa_set_enable(ctx, GL_POLYGON_OFFSET_POINT, |
| polygon->OffsetPoint); |
| _mesa_set_enable(ctx, GL_POLYGON_OFFSET_LINE, |
| polygon->OffsetLine); |
| _mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL, |
| polygon->OffsetFill); |
| } |
| break; |
| case GL_POLYGON_STIPPLE_BIT: |
| memcpy( ctx->PolygonStipple, attr->data, 32*sizeof(GLuint) ); |
| ctx->NewState |= _NEW_POLYGONSTIPPLE; |
| if (ctx->Driver.PolygonStipple) |
| ctx->Driver.PolygonStipple( ctx, (const GLubyte *) attr->data ); |
| break; |
| case GL_SCISSOR_BIT: |
| { |
| unsigned i; |
| const struct gl_scissor_attrib *scissor; |
| scissor = (const struct gl_scissor_attrib *) attr->data; |
| |
| for (i = 0; i < ctx->Const.MaxViewports; i++) { |
| _mesa_set_scissor(ctx, i, |
| scissor->ScissorArray[i].X, |
| scissor->ScissorArray[i].Y, |
| scissor->ScissorArray[i].Width, |
| scissor->ScissorArray[i].Height); |
| _mesa_set_enablei(ctx, GL_SCISSOR_TEST, i, |
| (scissor->EnableFlags >> i) & 1); |
| } |
| } |
| break; |
| case GL_STENCIL_BUFFER_BIT: |
| { |
| const struct gl_stencil_attrib *stencil; |
| stencil = (const struct gl_stencil_attrib *) attr->data; |
| _mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled); |
| _mesa_ClearStencil(stencil->Clear); |
| if (ctx->Extensions.EXT_stencil_two_side) { |
| _mesa_set_enable(ctx, GL_STENCIL_TEST_TWO_SIDE_EXT, |
| stencil->TestTwoSide); |
| _mesa_ActiveStencilFaceEXT(stencil->ActiveFace |
| ? GL_BACK : GL_FRONT); |
| } |
| /* front state */ |
| _mesa_StencilFuncSeparate(GL_FRONT, |
| stencil->Function[0], |
| stencil->Ref[0], |
| stencil->ValueMask[0]); |
| _mesa_StencilMaskSeparate(GL_FRONT, stencil->WriteMask[0]); |
| _mesa_StencilOpSeparate(GL_FRONT, stencil->FailFunc[0], |
| stencil->ZFailFunc[0], |
| stencil->ZPassFunc[0]); |
| /* back state */ |
| _mesa_StencilFuncSeparate(GL_BACK, |
| stencil->Function[1], |
| stencil->Ref[1], |
| stencil->ValueMask[1]); |
| _mesa_StencilMaskSeparate(GL_BACK, stencil->WriteMask[1]); |
| _mesa_StencilOpSeparate(GL_BACK, stencil->FailFunc[1], |
| stencil->ZFailFunc[1], |
| stencil->ZPassFunc[1]); |
| } |
| break; |
| case GL_TRANSFORM_BIT: |
| { |
| GLuint i; |
| const struct gl_transform_attrib *xform; |
| xform = (const struct gl_transform_attrib *) attr->data; |
| _mesa_MatrixMode(xform->MatrixMode); |
| if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top)) |
| _math_matrix_analyse( ctx->ProjectionMatrixStack.Top ); |
| |
| /* restore clip planes */ |
| for (i = 0; i < ctx->Const.MaxClipPlanes; i++) { |
| const GLuint mask = 1 << i; |
| const GLfloat *eyePlane = xform->EyeUserPlane[i]; |
| COPY_4V(ctx->Transform.EyeUserPlane[i], eyePlane); |
| _mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, |
| !!(xform->ClipPlanesEnabled & mask)); |
| if (ctx->Driver.ClipPlane) |
| ctx->Driver.ClipPlane( ctx, GL_CLIP_PLANE0 + i, eyePlane ); |
| } |
| |
| /* normalize/rescale */ |
| if (xform->Normalize != ctx->Transform.Normalize) |
| _mesa_set_enable(ctx, GL_NORMALIZE,ctx->Transform.Normalize); |
| if (xform->RescaleNormals != ctx->Transform.RescaleNormals) |
| _mesa_set_enable(ctx, GL_RESCALE_NORMAL_EXT, |
| ctx->Transform.RescaleNormals); |
| if (xform->DepthClamp != ctx->Transform.DepthClamp) |
| _mesa_set_enable(ctx, GL_DEPTH_CLAMP, |
| ctx->Transform.DepthClamp); |
| _mesa_ClipControl(xform->ClipOrigin, xform->ClipDepthMode); |
| } |
| break; |
| case GL_TEXTURE_BIT: |
| { |
| struct texture_state *texstate |
| = (struct texture_state *) attr->data; |
| pop_texture_group(ctx, texstate); |
| ctx->NewState |= _NEW_TEXTURE; |
| } |
| break; |
| case GL_VIEWPORT_BIT: |
| { |
| unsigned i; |
| const struct gl_viewport_attrib *vp; |
| vp = (const struct gl_viewport_attrib *) attr->data; |
| |
| for (i = 0; i < ctx->Const.MaxViewports; i++) { |
| _mesa_set_viewport(ctx, i, vp[i].X, vp[i].Y, vp[i].Width, |
| vp[i].Height); |
| _mesa_set_depth_range(ctx, i, vp[i].Near, vp[i].Far); |
| } |
| } |
| break; |
| case GL_MULTISAMPLE_BIT_ARB: |
| { |
| const struct gl_multisample_attrib *ms; |
| ms = (const struct gl_multisample_attrib *) attr->data; |
| |
| TEST_AND_UPDATE(ctx->Multisample.Enabled, |
| ms->Enabled, |
| GL_MULTISAMPLE); |
| |
| TEST_AND_UPDATE(ctx->Multisample.SampleCoverage, |
| ms->SampleCoverage, |
| GL_SAMPLE_COVERAGE); |
| |
| TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToCoverage, |
| ms->SampleAlphaToCoverage, |
| GL_SAMPLE_ALPHA_TO_COVERAGE); |
| |
| TEST_AND_UPDATE(ctx->Multisample.SampleAlphaToOne, |
| ms->SampleAlphaToOne, |
| GL_SAMPLE_ALPHA_TO_ONE); |
| |
| _mesa_SampleCoverage(ms->SampleCoverageValue, |
| ms->SampleCoverageInvert); |
| } |
| break; |
| |
| default: |
| _mesa_problem( ctx, "Bad attrib flag in PopAttrib"); |
| break; |
| } |
| |
| next = attr->next; |
| free(attr->data); |
| free(attr); |
| attr = next; |
| } |
| } |
| |
| |
| /** |
| * Copy gl_pixelstore_attrib from src to dst, updating buffer |
| * object refcounts. |
| */ |
| static void |
| copy_pixelstore(struct gl_context *ctx, |
| struct gl_pixelstore_attrib *dst, |
| const struct gl_pixelstore_attrib *src) |
| { |
| dst->Alignment = src->Alignment; |
| dst->RowLength = src->RowLength; |
| dst->SkipPixels = src->SkipPixels; |
| dst->SkipRows = src->SkipRows; |
| dst->ImageHeight = src->ImageHeight; |
| dst->SkipImages = src->SkipImages; |
| dst->SwapBytes = src->SwapBytes; |
| dst->LsbFirst = src->LsbFirst; |
| dst->Invert = src->Invert; |
| _mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj); |
| } |
| |
| |
| #define GL_CLIENT_PACK_BIT (1<<20) |
| #define GL_CLIENT_UNPACK_BIT (1<<21) |
| |
| /** |
| * Copy gl_vertex_array_object from src to dest. |
| * 'dest' must be in an initialized state. |
| */ |
| static void |
| copy_array_object(struct gl_context *ctx, |
| struct gl_vertex_array_object *dest, |
| struct gl_vertex_array_object *src) |
| { |
| GLuint i; |
| |
| /* skip Name */ |
| /* skip RefCount */ |
| |
| /* In theory must be the same anyway, but on recreate make sure it matches */ |
| dest->ARBsemantics = src->ARBsemantics; |
| |
| for (i = 0; i < Elements(src->VertexAttrib); i++) { |
| _mesa_copy_client_array(ctx, &dest->_VertexAttrib[i], &src->_VertexAttrib[i]); |
| _mesa_copy_vertex_attrib_array(ctx, &dest->VertexAttrib[i], &src->VertexAttrib[i]); |
| _mesa_copy_vertex_buffer_binding(ctx, &dest->VertexBinding[i], &src->VertexBinding[i]); |
| } |
| |
| /* _Enabled must be the same than on push */ |
| dest->_Enabled = src->_Enabled; |
| dest->NewArrays = src->NewArrays; |
| } |
| |
| /** |
| * Copy gl_array_attrib from src to dest. |
| * 'dest' must be in an initialized state. |
| */ |
| static void |
| copy_array_attrib(struct gl_context *ctx, |
| struct gl_array_attrib *dest, |
| struct gl_array_attrib *src, |
| bool vbo_deleted) |
| { |
| /* skip ArrayObj */ |
| /* skip DefaultArrayObj, Objects */ |
| dest->ActiveTexture = src->ActiveTexture; |
| dest->LockFirst = src->LockFirst; |
| dest->LockCount = src->LockCount; |
| dest->PrimitiveRestart = src->PrimitiveRestart; |
| dest->PrimitiveRestartFixedIndex = src->PrimitiveRestartFixedIndex; |
| dest->_PrimitiveRestart = src->_PrimitiveRestart; |
| dest->RestartIndex = src->RestartIndex; |
| /* skip NewState */ |
| /* skip RebindArrays */ |
| |
| if (!vbo_deleted) |
| copy_array_object(ctx, dest->VAO, src->VAO); |
| |
| /* skip ArrayBufferObj */ |
| /* skip IndexBufferObj */ |
| |
| /* Invalidate draw state. It will be updated during the next draw. */ |
| dest->DrawMethod = DRAW_NONE; |
| dest->_DrawArrays = NULL; |
| } |
| |
| /** |
| * Save the content of src to dest. |
| */ |
| static void |
| save_array_attrib(struct gl_context *ctx, |
| struct gl_array_attrib *dest, |
| struct gl_array_attrib *src) |
| { |
| /* Set the Name, needed for restore, but do never overwrite. |
| * Needs to match value in the object hash. */ |
| dest->VAO->Name = src->VAO->Name; |
| /* And copy all of the rest. */ |
| copy_array_attrib(ctx, dest, src, false); |
| |
| /* Just reference them here */ |
| _mesa_reference_buffer_object(ctx, &dest->ArrayBufferObj, |
| src->ArrayBufferObj); |
| _mesa_reference_buffer_object(ctx, &dest->VAO->IndexBufferObj, |
| src->VAO->IndexBufferObj); |
| } |
| |
| /** |
| * Restore the content of src to dest. |
| */ |
| static void |
| restore_array_attrib(struct gl_context *ctx, |
| struct gl_array_attrib *dest, |
| struct gl_array_attrib *src) |
| { |
| /* The ARB_vertex_array_object spec says: |
| * |
| * "BindVertexArray fails and an INVALID_OPERATION error is generated |
| * if array is not a name returned from a previous call to |
| * GenVertexArrays, or if such a name has since been deleted with |
| * DeleteVertexArrays." |
| * |
| * Therefore popping a deleted VAO cannot magically recreate it. |
| * |
| * The semantics of objects created using APPLE_vertex_array_objects behave |
| * differently. These objects expect to be recreated by pop. Alas. |
| */ |
| const bool arb_vao = (src->VAO->Name != 0 |
| && src->VAO->ARBsemantics); |
| |
| if (arb_vao && !_mesa_IsVertexArray(src->VAO->Name)) |
| return; |
| |
| _mesa_BindVertexArrayAPPLE(src->VAO->Name); |
| |
| /* Restore or recreate the buffer objects by the names ... */ |
| if (!arb_vao |
| || src->ArrayBufferObj->Name == 0 |
| || _mesa_IsBuffer(src->ArrayBufferObj->Name)) { |
| /* ... and restore its content */ |
| copy_array_attrib(ctx, dest, src, false); |
| |
| _mesa_BindBuffer(GL_ARRAY_BUFFER_ARB, |
| src->ArrayBufferObj->Name); |
| } else { |
| copy_array_attrib(ctx, dest, src, true); |
| } |
| |
| if (!arb_vao |
| || src->VAO->IndexBufferObj->Name == 0 |
| || _mesa_IsBuffer(src->VAO->IndexBufferObj->Name)) |
| _mesa_BindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, |
| src->VAO->IndexBufferObj->Name); |
| } |
| |
| /** |
| * init/alloc the fields of 'attrib'. |
| * Needs to the init part matching free_array_attrib_data below. |
| */ |
| static bool |
| init_array_attrib_data(struct gl_context *ctx, |
| struct gl_array_attrib *attrib) |
| { |
| /* Get a non driver gl_vertex_array_object. */ |
| attrib->VAO = CALLOC_STRUCT( gl_vertex_array_object ); |
| |
| if (attrib->VAO == NULL) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushClientAttrib"); |
| return false; |
| } |
| |
| _mesa_initialize_vao(ctx, attrib->VAO, 0); |
| return true; |
| } |
| |
| /** |
| * Free/unreference the fields of 'attrib' but don't delete it (that's |
| * done later in the calling code). |
| * Needs to the cleanup part matching init_array_attrib_data above. |
| */ |
| static void |
| free_array_attrib_data(struct gl_context *ctx, |
| struct gl_array_attrib *attrib) |
| { |
| /* We use a non driver array object, so don't just unref since we would |
| * end up using the drivers DeleteArrayObject function for deletion. */ |
| _mesa_delete_vao(ctx, attrib->VAO); |
| attrib->VAO = 0; |
| _mesa_reference_buffer_object(ctx, &attrib->ArrayBufferObj, NULL); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_PushClientAttrib(GLbitfield mask) |
| { |
| struct gl_attrib_node *head; |
| |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if (ctx->ClientAttribStackDepth >= MAX_CLIENT_ATTRIB_STACK_DEPTH) { |
| _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushClientAttrib" ); |
| return; |
| } |
| |
| /* Build linked list of attribute nodes which save all attribute |
| * groups specified by the mask. |
| */ |
| head = NULL; |
| |
| if (mask & GL_CLIENT_PIXEL_STORE_BIT) { |
| struct gl_pixelstore_attrib *attr; |
| /* packing attribs */ |
| attr = CALLOC_STRUCT( gl_pixelstore_attrib ); |
| if (attr == NULL) { |
| _mesa_error( ctx, GL_OUT_OF_MEMORY, "glPushClientAttrib" ); |
| goto end; |
| } |
| if (save_attrib_data(&head, GL_CLIENT_PACK_BIT, attr)) { |
| copy_pixelstore(ctx, attr, &ctx->Pack); |
| } |
| else { |
| _mesa_error( ctx, GL_OUT_OF_MEMORY, "glPushClientAttrib" ); |
| free(attr); |
| goto end; |
| } |
| |
| /* unpacking attribs */ |
| attr = CALLOC_STRUCT( gl_pixelstore_attrib ); |
| if (attr == NULL) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushClientAttrib"); |
| goto end; |
| } |
| |
| if (save_attrib_data(&head, GL_CLIENT_UNPACK_BIT, attr)) { |
| copy_pixelstore(ctx, attr, &ctx->Unpack); |
| } |
| else { |
| _mesa_error( ctx, GL_OUT_OF_MEMORY, "glPushClientAttrib" ); |
| free(attr); |
| goto end; |
| } |
| } |
| |
| if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) { |
| struct gl_array_attrib *attr; |
| attr = CALLOC_STRUCT( gl_array_attrib ); |
| if (attr == NULL) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushClientAttrib"); |
| goto end; |
| } |
| |
| if (!init_array_attrib_data(ctx, attr)) { |
| free(attr); |
| goto end; |
| } |
| |
| if (save_attrib_data(&head, GL_CLIENT_VERTEX_ARRAY_BIT, attr)) { |
| save_array_attrib(ctx, attr, &ctx->Array); |
| } |
| else { |
| free_array_attrib_data(ctx, attr); |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glPushClientAttrib"); |
| free(attr); |
| /* goto to keep safe from possible later changes */ |
| goto end; |
| } |
| } |
| end: |
| if (head != NULL) { |
| ctx->ClientAttribStack[ctx->ClientAttribStackDepth] = head; |
| ctx->ClientAttribStackDepth++; |
| } |
| } |
| |
| |
| |
| |
| void GLAPIENTRY |
| _mesa_PopClientAttrib(void) |
| { |
| struct gl_attrib_node *node, *next; |
| |
| GET_CURRENT_CONTEXT(ctx); |
| FLUSH_VERTICES(ctx, 0); |
| |
| if (ctx->ClientAttribStackDepth == 0) { |
| _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopClientAttrib" ); |
| return; |
| } |
| |
| ctx->ClientAttribStackDepth--; |
| node = ctx->ClientAttribStack[ctx->ClientAttribStackDepth]; |
| |
| while (node) { |
| switch (node->kind) { |
| case GL_CLIENT_PACK_BIT: |
| { |
| struct gl_pixelstore_attrib *store = |
| (struct gl_pixelstore_attrib *) node->data; |
| copy_pixelstore(ctx, &ctx->Pack, store); |
| _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL); |
| } |
| break; |
| case GL_CLIENT_UNPACK_BIT: |
| { |
| struct gl_pixelstore_attrib *store = |
| (struct gl_pixelstore_attrib *) node->data; |
| copy_pixelstore(ctx, &ctx->Unpack, store); |
| _mesa_reference_buffer_object(ctx, &store->BufferObj, NULL); |
| } |
| break; |
| case GL_CLIENT_VERTEX_ARRAY_BIT: { |
| struct gl_array_attrib * attr = |
| (struct gl_array_attrib *) node->data; |
| restore_array_attrib(ctx, &ctx->Array, attr); |
| free_array_attrib_data(ctx, attr); |
| ctx->NewState |= _NEW_ARRAY; |
| break; |
| } |
| default: |
| _mesa_problem( ctx, "Bad attrib flag in PopClientAttrib"); |
| break; |
| } |
| |
| next = node->next; |
| free(node->data); |
| free(node); |
| node = next; |
| } |
| } |
| |
| |
| /** |
| * Free any attribute state data that might be attached to the context. |
| */ |
| void |
| _mesa_free_attrib_data(struct gl_context *ctx) |
| { |
| while (ctx->AttribStackDepth > 0) { |
| struct gl_attrib_node *attr, *next; |
| |
| ctx->AttribStackDepth--; |
| attr = ctx->AttribStack[ctx->AttribStackDepth]; |
| |
| while (attr) { |
| if (attr->kind == GL_TEXTURE_BIT) { |
| struct texture_state *texstate = (struct texture_state*)attr->data; |
| GLuint u, tgt; |
| /* clear references to the saved texture objects */ |
| for (u = 0; u < ctx->Const.MaxTextureUnits; u++) { |
| for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) { |
| _mesa_reference_texobj(&texstate->SavedTexRef[u][tgt], NULL); |
| } |
| } |
| _mesa_reference_shared_state(ctx, &texstate->SharedRef, NULL); |
| } |
| else { |
| /* any other chunks of state that requires special handling? */ |
| } |
| |
| next = attr->next; |
| free(attr->data); |
| free(attr); |
| attr = next; |
| } |
| } |
| } |
| |
| |
| void _mesa_init_attrib( struct gl_context *ctx ) |
| { |
| /* Renderer and client attribute stacks */ |
| ctx->AttribStackDepth = 0; |
| ctx->ClientAttribStackDepth = 0; |
| } |