133 lines
3.8 KiB
C
133 lines
3.8 KiB
C
/**************************************************************************
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*
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* Copyright 2006 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portionsalloc
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "main/accum.h"
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#include "main/enums.h"
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#include "main/state.h"
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#include "main/stencil.h"
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#include "main/bufferobj.h"
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#include "main/context.h"
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#include "swrast/swrast.h"
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#include "intel_context.h"
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#include "intel_pixel.h"
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#include "intel_regions.h"
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#define FILE_DEBUG_FLAG DEBUG_PIXEL
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static GLenum
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effective_func(GLenum func, bool src_alpha_is_one)
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{
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if (src_alpha_is_one) {
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if (func == GL_SRC_ALPHA)
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return GL_ONE;
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if (func == GL_ONE_MINUS_SRC_ALPHA)
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return GL_ZERO;
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}
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return func;
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}
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/**
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* Check if any fragment operations are in effect which might effect
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* glDraw/CopyPixels.
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*/
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bool
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intel_check_blit_fragment_ops(struct gl_context * ctx, bool src_alpha_is_one)
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{
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if (ctx->NewState)
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_mesa_update_state(ctx);
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if (_mesa_arb_fragment_program_enabled(ctx)) {
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DBG("fallback due to fragment program\n");
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return false;
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}
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if (ctx->Color.BlendEnabled &&
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(effective_func(ctx->Color.Blend[0].SrcRGB, src_alpha_is_one) != GL_ONE ||
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effective_func(ctx->Color.Blend[0].DstRGB, src_alpha_is_one) != GL_ZERO ||
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ctx->Color.Blend[0].EquationRGB != GL_FUNC_ADD ||
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effective_func(ctx->Color.Blend[0].SrcA, src_alpha_is_one) != GL_ONE ||
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effective_func(ctx->Color.Blend[0].DstA, src_alpha_is_one) != GL_ZERO ||
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ctx->Color.Blend[0].EquationA != GL_FUNC_ADD)) {
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DBG("fallback due to blend\n");
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return false;
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}
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if (ctx->Texture._MaxEnabledTexImageUnit != -1) {
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DBG("fallback due to texturing\n");
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return false;
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}
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if (GET_COLORMASK(ctx->Color.ColorMask, 0) != 0xf) {
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DBG("fallback due to color masking\n");
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return false;
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}
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if (ctx->Color.AlphaEnabled) {
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DBG("fallback due to alpha\n");
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return false;
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}
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if (ctx->Depth.Test) {
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DBG("fallback due to depth test\n");
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return false;
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}
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if (ctx->Fog.Enabled) {
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DBG("fallback due to fog\n");
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return false;
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}
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if (ctx->_ImageTransferState) {
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DBG("fallback due to image transfer\n");
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return false;
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}
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if (_mesa_stencil_is_enabled(ctx)) {
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DBG("fallback due to image stencil\n");
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return false;
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}
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if (ctx->RenderMode != GL_RENDER) {
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DBG("fallback due to render mode\n");
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return false;
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}
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return true;
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}
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void
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intelInitPixelFuncs(struct dd_function_table *functions)
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{
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functions->Bitmap = intelBitmap;
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functions->CopyPixels = intelCopyPixels;
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functions->DrawPixels = intelDrawPixels;
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functions->ReadPixels = intelReadPixels;
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}
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