1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portionsalloc
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "main/enums.h"
29 #include "main/state.h"
30 #include "main/bufferobj.h"
31 #include "main/context.h"
32 #include "main/enable.h"
33 #include "main/matrix.h"
34 #include "main/texstate.h"
35 #include "main/varray.h"
36 #include "main/viewport.h"
37 #include "swrast/swrast.h"
38 #include "shader/arbprogram.h"
39 #include "shader/program.h"
41 #include "intel_context.h"
42 #include "intel_pixel.h"
43 #include "intel_regions.h"
45 #define FILE_DEBUG_FLAG DEBUG_PIXEL
48 effective_func(GLenum func
, GLboolean src_alpha_is_one
)
50 if (src_alpha_is_one
) {
51 if (func
== GL_SRC_ALPHA
)
53 if (func
== GL_ONE_MINUS_SRC_ALPHA
)
61 * Check if any fragment operations are in effect which might effect
65 intel_check_blit_fragment_ops(GLcontext
* ctx
, GLboolean src_alpha_is_one
)
68 _mesa_update_state(ctx
);
70 if (ctx
->FragmentProgram
._Enabled
) {
71 DBG("fallback due to fragment program\n");
75 if (ctx
->Color
.BlendEnabled
&&
76 (effective_func(ctx
->Color
.BlendSrcRGB
, src_alpha_is_one
) != GL_ONE
||
77 effective_func(ctx
->Color
.BlendDstRGB
, src_alpha_is_one
) != GL_ZERO
||
78 ctx
->Color
.BlendEquationRGB
!= GL_FUNC_ADD
||
79 effective_func(ctx
->Color
.BlendSrcA
, src_alpha_is_one
) != GL_ONE
||
80 effective_func(ctx
->Color
.BlendDstA
, src_alpha_is_one
) != GL_ZERO
||
81 ctx
->Color
.BlendEquationA
!= GL_FUNC_ADD
)) {
82 DBG("fallback due to blend\n");
86 if (ctx
->Texture
._EnabledUnits
) {
87 DBG("fallback due to texturing\n");
91 if (!(ctx
->Color
.ColorMask
[0] &&
92 ctx
->Color
.ColorMask
[1] &&
93 ctx
->Color
.ColorMask
[2] &&
94 ctx
->Color
.ColorMask
[3])) {
95 DBG("fallback due to color masking\n");
99 if (ctx
->Color
.AlphaEnabled
) {
100 DBG("fallback due to alpha\n");
104 if (ctx
->Depth
.Test
) {
105 DBG("fallback due to depth test\n");
109 if (ctx
->Fog
.Enabled
) {
110 DBG("fallback due to fog\n");
114 if (ctx
->_ImageTransferState
) {
115 DBG("fallback due to image transfer\n");
119 if (ctx
->Stencil
._Enabled
) {
120 DBG("fallback due to image stencil\n");
124 if (ctx
->RenderMode
!= GL_RENDER
) {
125 DBG("fallback due to render mode\n");
134 intel_check_meta_tex_fragment_ops(GLcontext
* ctx
)
137 _mesa_update_state(ctx
);
139 /* Some of _ImageTransferState (scale, bias) could be done with
140 * fragment programs on i915.
142 return !(ctx
->_ImageTransferState
|| ctx
->Fog
.Enabled
|| /* not done yet */
143 ctx
->Texture
._EnabledUnits
|| ctx
->FragmentProgram
._Enabled
);
146 /* The intel_region struct doesn't really do enough to capture the
147 * format of the pixels in the region. For now this code assumes that
148 * the region is a display surface and hence is either ARGB8888 or
150 * XXX FBO: If we'd pass in the intel_renderbuffer instead of region, we'd
151 * know the buffer's pixel format.
153 * \param format as given to glDraw/ReadPixels
154 * \param type as given to glDraw/ReadPixels
157 intel_check_blit_format(struct intel_region
* region
,
158 GLenum format
, GLenum type
)
160 if (region
->cpp
== 4 &&
161 (type
== GL_UNSIGNED_INT_8_8_8_8_REV
||
162 type
== GL_UNSIGNED_BYTE
) && format
== GL_BGRA
) {
166 if (region
->cpp
== 2 &&
167 type
== GL_UNSIGNED_SHORT_5_6_5_REV
&& format
== GL_BGR
) {
171 if (INTEL_DEBUG
& DEBUG_PIXEL
)
172 fprintf(stderr
, "%s: bad format for blit (cpp %d, type %s format %s)\n",
173 __FUNCTION__
, region
->cpp
,
174 _mesa_lookup_enum_by_nr(type
), _mesa_lookup_enum_by_nr(format
));
180 intel_meta_set_passthrough_transform(struct intel_context
*intel
)
182 GLcontext
*ctx
= &intel
->ctx
;
184 intel
->meta
.saved_vp_x
= ctx
->Viewport
.X
;
185 intel
->meta
.saved_vp_y
= ctx
->Viewport
.Y
;
186 intel
->meta
.saved_vp_width
= ctx
->Viewport
.Width
;
187 intel
->meta
.saved_vp_height
= ctx
->Viewport
.Height
;
188 intel
->meta
.saved_matrix_mode
= ctx
->Transform
.MatrixMode
;
190 intel
->internal_viewport_call
= GL_TRUE
;
191 _mesa_Viewport(0, 0, ctx
->DrawBuffer
->Width
, ctx
->DrawBuffer
->Height
);
192 intel
->internal_viewport_call
= GL_FALSE
;
194 _mesa_MatrixMode(GL_PROJECTION
);
196 _mesa_LoadIdentity();
197 _mesa_Ortho(0, ctx
->DrawBuffer
->Width
, 0, ctx
->DrawBuffer
->Height
, 1, -1);
199 _mesa_MatrixMode(GL_MODELVIEW
);
201 _mesa_LoadIdentity();
205 intel_meta_restore_transform(struct intel_context
*intel
)
207 _mesa_MatrixMode(GL_PROJECTION
);
209 _mesa_MatrixMode(GL_MODELVIEW
);
212 _mesa_MatrixMode(intel
->meta
.saved_matrix_mode
);
214 intel
->internal_viewport_call
= GL_TRUE
;
215 _mesa_Viewport(intel
->meta
.saved_vp_x
, intel
->meta
.saved_vp_y
,
216 intel
->meta
.saved_vp_width
, intel
->meta
.saved_vp_height
);
217 intel
->internal_viewport_call
= GL_FALSE
;
221 * Set up a vertex program to pass through the position and first texcoord
225 intel_meta_set_passthrough_vertex_program(struct intel_context
*intel
)
227 GLcontext
*ctx
= &intel
->ctx
;
228 static const char *vp
=
231 "DP4 vertexClip.x, state.matrix.mvp.row[0], vertex.position;\n"
232 "DP4 vertexClip.y, state.matrix.mvp.row[1], vertex.position;\n"
233 "DP4 vertexClip.z, state.matrix.mvp.row[2], vertex.position;\n"
234 "DP4 vertexClip.w, state.matrix.mvp.row[3], vertex.position;\n"
235 "MOV result.position, vertexClip;\n"
236 "MOV result.texcoord[0], vertex.texcoord[0];\n"
237 "MOV result.color, vertex.color;\n"
240 assert(intel
->meta
.saved_vp
== NULL
);
242 _mesa_reference_vertprog(ctx
, &intel
->meta
.saved_vp
,
243 ctx
->VertexProgram
.Current
);
244 if (intel
->meta
.passthrough_vp
== NULL
) {
246 _mesa_GenPrograms(1, &prog_name
);
247 _mesa_BindProgram(GL_VERTEX_PROGRAM_ARB
, prog_name
);
248 _mesa_ProgramStringARB(GL_VERTEX_PROGRAM_ARB
,
249 GL_PROGRAM_FORMAT_ASCII_ARB
,
250 strlen(vp
), (const GLubyte
*)vp
);
251 _mesa_reference_vertprog(ctx
, &intel
->meta
.passthrough_vp
,
252 ctx
->VertexProgram
.Current
);
253 _mesa_DeletePrograms(1, &prog_name
);
256 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
257 _mesa_reference_vertprog(ctx
, &ctx
->VertexProgram
.Current
,
258 intel
->meta
.passthrough_vp
);
259 ctx
->Driver
.BindProgram(ctx
, GL_VERTEX_PROGRAM_ARB
,
260 &intel
->meta
.passthrough_vp
->Base
);
262 intel
->meta
.saved_vp_enable
= ctx
->VertexProgram
.Enabled
;
263 _mesa_Enable(GL_VERTEX_PROGRAM_ARB
);
267 * Restores the previous vertex program after
268 * intel_meta_set_passthrough_vertex_program()
271 intel_meta_restore_vertex_program(struct intel_context
*intel
)
273 GLcontext
*ctx
= &intel
->ctx
;
275 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
276 _mesa_reference_vertprog(ctx
, &ctx
->VertexProgram
.Current
,
277 intel
->meta
.saved_vp
);
278 _mesa_reference_vertprog(ctx
, &intel
->meta
.saved_vp
, NULL
);
279 ctx
->Driver
.BindProgram(ctx
, GL_VERTEX_PROGRAM_ARB
,
280 &ctx
->VertexProgram
.Current
->Base
);
282 if (!intel
->meta
.saved_vp_enable
)
283 _mesa_Disable(GL_VERTEX_PROGRAM_ARB
);
287 * Binds the given program string to GL_FRAGMENT_PROGRAM_ARB, caching the
291 intel_meta_set_fragment_program(struct intel_context
*intel
,
292 struct gl_fragment_program
**prog
,
293 const char *prog_string
)
295 GLcontext
*ctx
= &intel
->ctx
;
296 assert(intel
->meta
.saved_fp
== NULL
);
298 _mesa_reference_fragprog(ctx
, &intel
->meta
.saved_fp
,
299 ctx
->FragmentProgram
.Current
);
302 _mesa_GenPrograms(1, &prog_name
);
303 _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB
, prog_name
);
304 _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB
,
305 GL_PROGRAM_FORMAT_ASCII_ARB
,
306 strlen(prog_string
), (const GLubyte
*)prog_string
);
307 _mesa_reference_fragprog(ctx
, prog
, ctx
->FragmentProgram
.Current
);
308 /* Note that DeletePrograms unbinds the program on us */
309 _mesa_DeletePrograms(1, &prog_name
);
312 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
313 _mesa_reference_fragprog(ctx
, &ctx
->FragmentProgram
.Current
, *prog
);
314 ctx
->Driver
.BindProgram(ctx
, GL_FRAGMENT_PROGRAM_ARB
, &((*prog
)->Base
));
316 intel
->meta
.saved_fp_enable
= ctx
->FragmentProgram
.Enabled
;
317 _mesa_Enable(GL_FRAGMENT_PROGRAM_ARB
);
321 * Restores the previous fragment program after
322 * intel_meta_set_fragment_program()
325 intel_meta_restore_fragment_program(struct intel_context
*intel
)
327 GLcontext
*ctx
= &intel
->ctx
;
329 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
330 _mesa_reference_fragprog(ctx
, &ctx
->FragmentProgram
.Current
,
331 intel
->meta
.saved_fp
);
332 _mesa_reference_fragprog(ctx
, &intel
->meta
.saved_fp
, NULL
);
333 ctx
->Driver
.BindProgram(ctx
, GL_FRAGMENT_PROGRAM_ARB
,
334 &ctx
->FragmentProgram
.Current
->Base
);
336 if (!intel
->meta
.saved_fp_enable
)
337 _mesa_Disable(GL_FRAGMENT_PROGRAM_ARB
);
340 static const float default_texcoords
[4][2] = { { 0.0, 0.0 },
346 intel_meta_set_default_texrect(struct intel_context
*intel
)
348 GLcontext
*ctx
= &intel
->ctx
;
349 struct gl_client_array
*old_texcoord_array
;
351 intel
->meta
.saved_active_texture
= ctx
->Texture
.CurrentUnit
;
352 if (intel
->meta
.saved_array_vbo
== NULL
) {
353 _mesa_reference_buffer_object(ctx
, &intel
->meta
.saved_array_vbo
,
354 ctx
->Array
.ArrayBufferObj
);
357 old_texcoord_array
= &ctx
->Array
.ArrayObj
->TexCoord
[0];
358 intel
->meta
.saved_texcoord_type
= old_texcoord_array
->Type
;
359 intel
->meta
.saved_texcoord_size
= old_texcoord_array
->Size
;
360 intel
->meta
.saved_texcoord_stride
= old_texcoord_array
->Stride
;
361 intel
->meta
.saved_texcoord_enable
= old_texcoord_array
->Enabled
;
362 intel
->meta
.saved_texcoord_ptr
= old_texcoord_array
->Ptr
;
363 _mesa_reference_buffer_object(ctx
, &intel
->meta
.saved_texcoord_vbo
,
364 old_texcoord_array
->BufferObj
);
366 _mesa_ClientActiveTextureARB(GL_TEXTURE0
);
368 if (intel
->meta
.texcoord_vbo
== NULL
) {
371 _mesa_GenBuffersARB(1, &vbo_name
);
372 _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB
, vbo_name
);
373 _mesa_BufferDataARB(GL_ARRAY_BUFFER_ARB
, sizeof(default_texcoords
),
374 default_texcoords
, GL_STATIC_DRAW_ARB
);
375 _mesa_reference_buffer_object(ctx
, &intel
->meta
.texcoord_vbo
,
376 ctx
->Array
.ArrayBufferObj
);
378 _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB
,
379 intel
->meta
.texcoord_vbo
->Name
);
381 _mesa_TexCoordPointer(2, GL_FLOAT
, 2 * sizeof(GLfloat
), NULL
);
383 _mesa_Enable(GL_TEXTURE_COORD_ARRAY
);
387 intel_meta_restore_texcoords(struct intel_context
*intel
)
389 GLcontext
*ctx
= &intel
->ctx
;
391 /* Restore the old TexCoordPointer */
392 if (intel
->meta
.saved_texcoord_vbo
) {
393 _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB
,
394 intel
->meta
.saved_texcoord_vbo
->Name
);
395 _mesa_reference_buffer_object(ctx
, &intel
->meta
.saved_texcoord_vbo
, NULL
);
397 _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB
, 0);
400 _mesa_TexCoordPointer(intel
->meta
.saved_texcoord_size
,
401 intel
->meta
.saved_texcoord_type
,
402 intel
->meta
.saved_texcoord_stride
,
403 intel
->meta
.saved_texcoord_ptr
);
404 if (!intel
->meta
.saved_texcoord_enable
)
405 _mesa_Disable(GL_TEXTURE_COORD_ARRAY
);
407 _mesa_ClientActiveTextureARB(GL_TEXTURE0
+
408 intel
->meta
.saved_active_texture
);
410 if (intel
->meta
.saved_array_vbo
) {
411 _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB
,
412 intel
->meta
.saved_array_vbo
->Name
);
413 _mesa_reference_buffer_object(ctx
, &intel
->meta
.saved_array_vbo
, NULL
);
415 _mesa_BindBufferARB(GL_ARRAY_BUFFER_ARB
, 0);
420 intelInitPixelFuncs(struct dd_function_table
*functions
)
422 functions
->Accum
= _swrast_Accum
;
423 if (!getenv("INTEL_NO_BLIT")) {
424 functions
->Bitmap
= intelBitmap
;
425 functions
->CopyPixels
= intelCopyPixels
;
426 functions
->DrawPixels
= intelDrawPixels
;
428 functions
->ReadPixels
= intelReadPixels
;
434 intel_free_pixel_state(struct intel_context
*intel
)
436 GLcontext
*ctx
= &intel
->ctx
;
438 _mesa_reference_vertprog(ctx
, &intel
->meta
.passthrough_vp
, NULL
);
439 _mesa_reference_fragprog(ctx
, &intel
->meta
.bitmap_fp
, NULL
);
440 _mesa_reference_fragprog(ctx
, &intel
->meta
.tex2d_fp
, NULL
);
441 _mesa_reference_buffer_object(ctx
, &intel
->meta
.texcoord_vbo
, NULL
);