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| /************************************************************************** |
| * |
| * Copyright 2006 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, sub license, 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 (including the |
| * next paragraph) shall be included in all copies or substantial portionsalloc |
| * 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 NON-INFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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 "main/accum.h" |
| #include "main/enums.h" |
| #include "main/state.h" |
| #include "main/bufferobj.h" |
| #include "main/context.h" |
| #include "swrast/swrast.h" |
| |
| #include "brw_context.h" |
| #include "intel_pixel.h" |
| |
| #define FILE_DEBUG_FLAG DEBUG_PIXEL |
| |
| static GLenum |
| effective_func(GLenum func, bool src_alpha_is_one) |
| { |
| if (src_alpha_is_one) { |
| if (func == GL_SRC_ALPHA) |
| return GL_ONE; |
| if (func == GL_ONE_MINUS_SRC_ALPHA) |
| return GL_ZERO; |
| } |
| |
| return func; |
| } |
| |
| /** |
| * Check if any fragment operations are in effect which might effect |
| * glDraw/CopyPixels. |
| */ |
| bool |
| intel_check_blit_fragment_ops(struct gl_context * ctx, bool src_alpha_is_one) |
| { |
| if (ctx->NewState) |
| _mesa_update_state(ctx); |
| |
| if (ctx->FragmentProgram._Enabled) { |
| DBG("fallback due to fragment program\n"); |
| return false; |
| } |
| |
| if (ctx->Color.BlendEnabled && |
| (effective_func(ctx->Color.Blend[0].SrcRGB, src_alpha_is_one) != GL_ONE || |
| effective_func(ctx->Color.Blend[0].DstRGB, src_alpha_is_one) != GL_ZERO || |
| ctx->Color.Blend[0].EquationRGB != GL_FUNC_ADD || |
| effective_func(ctx->Color.Blend[0].SrcA, src_alpha_is_one) != GL_ONE || |
| effective_func(ctx->Color.Blend[0].DstA, src_alpha_is_one) != GL_ZERO || |
| ctx->Color.Blend[0].EquationA != GL_FUNC_ADD)) { |
| DBG("fallback due to blend\n"); |
| return false; |
| } |
| |
| if (ctx->Texture._MaxEnabledTexImageUnit != -1) { |
| DBG("fallback due to texturing\n"); |
| return false; |
| } |
| |
| if (!(ctx->Color.ColorMask[0][0] && |
| ctx->Color.ColorMask[0][1] && |
| ctx->Color.ColorMask[0][2] && |
| ctx->Color.ColorMask[0][3])) { |
| DBG("fallback due to color masking\n"); |
| return false; |
| } |
| |
| if (ctx->Color.AlphaEnabled) { |
| DBG("fallback due to alpha\n"); |
| return false; |
| } |
| |
| if (ctx->Depth.Test) { |
| DBG("fallback due to depth test\n"); |
| return false; |
| } |
| |
| if (ctx->Fog.Enabled) { |
| DBG("fallback due to fog\n"); |
| return false; |
| } |
| |
| if (ctx->_ImageTransferState) { |
| DBG("fallback due to image transfer\n"); |
| return false; |
| } |
| |
| if (ctx->Stencil._Enabled) { |
| DBG("fallback due to image stencil\n"); |
| return false; |
| } |
| |
| if (ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F) { |
| DBG("fallback due to pixel zoom\n"); |
| return false; |
| } |
| |
| if (ctx->RenderMode != GL_RENDER) { |
| DBG("fallback due to render mode\n"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void |
| intelInitPixelFuncs(struct dd_function_table *functions) |
| { |
| functions->Accum = _mesa_accum; |
| functions->Bitmap = intelBitmap; |
| functions->CopyPixels = intelCopyPixels; |
| functions->DrawPixels = intelDrawPixels; |
| functions->ReadPixels = intelReadPixels; |
| } |
| |