2 * Copyright 2006 VMware, Inc.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portionsalloc
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 #include "main/accum.h"
27 #include "main/enums.h"
28 #include "main/state.h"
29 #include "main/stencil.h"
30 #include "main/bufferobj.h"
31 #include "main/context.h"
32 #include "swrast/swrast.h"
34 #include "brw_context.h"
35 #include "intel_pixel.h"
37 #define FILE_DEBUG_FLAG DEBUG_PIXEL
40 effective_func(GLenum func
, bool src_alpha_is_one
)
42 if (src_alpha_is_one
) {
43 if (func
== GL_SRC_ALPHA
)
45 if (func
== GL_ONE_MINUS_SRC_ALPHA
)
53 * Check if any fragment operations are in effect which might effect
57 intel_check_blit_fragment_ops(struct gl_context
* ctx
, bool src_alpha_is_one
)
60 _mesa_update_state(ctx
);
62 if (_mesa_arb_fragment_program_enabled(ctx
)) {
63 DBG("fallback due to fragment program\n");
67 if (ctx
->Color
.BlendEnabled
&&
68 (effective_func(ctx
->Color
.Blend
[0].SrcRGB
, src_alpha_is_one
) != GL_ONE
||
69 effective_func(ctx
->Color
.Blend
[0].DstRGB
, src_alpha_is_one
) != GL_ZERO
||
70 ctx
->Color
.Blend
[0].EquationRGB
!= GL_FUNC_ADD
||
71 effective_func(ctx
->Color
.Blend
[0].SrcA
, src_alpha_is_one
) != GL_ONE
||
72 effective_func(ctx
->Color
.Blend
[0].DstA
, src_alpha_is_one
) != GL_ZERO
||
73 ctx
->Color
.Blend
[0].EquationA
!= GL_FUNC_ADD
)) {
74 DBG("fallback due to blend\n");
78 if (ctx
->Texture
._MaxEnabledTexImageUnit
!= -1) {
79 DBG("fallback due to texturing\n");
83 if (!(ctx
->Color
.ColorMask
[0][0] &&
84 ctx
->Color
.ColorMask
[0][1] &&
85 ctx
->Color
.ColorMask
[0][2] &&
86 ctx
->Color
.ColorMask
[0][3])) {
87 DBG("fallback due to color masking\n");
91 if (ctx
->Color
.AlphaEnabled
) {
92 DBG("fallback due to alpha\n");
96 if (ctx
->Depth
.Test
) {
97 DBG("fallback due to depth test\n");
101 if (ctx
->Fog
.Enabled
) {
102 DBG("fallback due to fog\n");
106 if (ctx
->_ImageTransferState
) {
107 DBG("fallback due to image transfer\n");
111 if (_mesa_stencil_is_enabled(ctx
)) {
112 DBG("fallback due to image stencil\n");
116 if (ctx
->Pixel
.ZoomX
!= 1.0F
|| ctx
->Pixel
.ZoomY
!= 1.0F
) {
117 DBG("fallback due to pixel zoom\n");
121 if (ctx
->RenderMode
!= GL_RENDER
) {
122 DBG("fallback due to render mode\n");
130 intelInitPixelFuncs(struct dd_function_table
*functions
)
132 functions
->Bitmap
= intelBitmap
;
133 functions
->CopyPixels
= intelCopyPixels
;
134 functions
->DrawPixels
= intelDrawPixels
;
135 functions
->ReadPixels
= intelReadPixels
;