1 /**************************************************************************
3 * Copyright 2007 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 portions
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 **************************************************************************/
33 #include "main/imports.h"
34 #include "main/image.h"
35 #include "main/bufferobj.h"
36 #include "main/macros.h"
37 #include "main/texformat.h"
38 #include "main/state.h"
39 #include "shader/program.h"
40 #include "shader/prog_parameter.h"
41 #include "shader/prog_print.h"
43 #include "st_context.h"
45 #include "st_atom_constbuf.h"
47 #include "st_program.h"
48 #include "st_cb_drawpixels.h"
49 #include "st_cb_readpixels.h"
50 #include "st_cb_fbo.h"
51 #include "st_cb_texture.h"
53 #include "st_format.h"
54 #include "st_mesa_to_tgsi.h"
55 #include "st_texture.h"
56 #include "pipe/p_context.h"
57 #include "pipe/p_defines.h"
58 #include "pipe/p_inlines.h"
59 #include "util/u_tile.h"
60 #include "util/u_draw_quad.h"
61 #include "shader/prog_instruction.h"
62 #include "cso_cache/cso_context.h"
66 * Check if the given program is:
67 * 0: MOVE result.color, fragment.color;
71 is_passthrough_program(const struct gl_fragment_program
*prog
)
73 if (prog
->Base
.NumInstructions
== 2) {
74 const struct prog_instruction
*inst
= prog
->Base
.Instructions
;
75 if (inst
[0].Opcode
== OPCODE_MOV
&&
76 inst
[1].Opcode
== OPCODE_END
&&
77 inst
[0].DstReg
.File
== PROGRAM_OUTPUT
&&
78 inst
[0].DstReg
.Index
== FRAG_RESULT_COLOR
&&
79 inst
[0].DstReg
.WriteMask
== WRITEMASK_XYZW
&&
80 inst
[0].SrcReg
[0].File
== PROGRAM_INPUT
&&
81 inst
[0].SrcReg
[0].Index
== FRAG_ATTRIB_COL0
&&
82 inst
[0].SrcReg
[0].Swizzle
== SWIZZLE_XYZW
) {
92 * Make fragment shader for glDraw/CopyPixels. This shader is made
93 * by combining the pixel transfer shader with the user-defined shader.
95 static struct st_fragment_program
*
96 combined_drawpix_fragment_program(GLcontext
*ctx
)
98 struct st_context
*st
= ctx
->st
;
99 struct st_fragment_program
*stfp
;
101 if (st
->pixel_xfer
.program
->serialNo
== st
->pixel_xfer
.xfer_prog_sn
102 && st
->fp
->serialNo
== st
->pixel_xfer
.user_prog_sn
) {
103 /* the pixel tranfer program has not changed and the user-defined
104 * program has not changed, so re-use the combined program.
106 stfp
= st
->pixel_xfer
.combined_prog
;
109 /* Concatenate the pixel transfer program with the current user-
112 if (is_passthrough_program(&st
->fp
->Base
)) {
113 stfp
= (struct st_fragment_program
*)
114 _mesa_clone_program(ctx
, &st
->pixel_xfer
.program
->Base
.Base
);
118 printf("Base program:\n");
119 _mesa_print_program(&st
->fp
->Base
.Base
);
120 printf("DrawPix program:\n");
121 _mesa_print_program(&st
->pixel_xfer
.program
->Base
.Base
);
123 stfp
= (struct st_fragment_program
*)
124 _mesa_combine_programs(ctx
,
125 &st
->pixel_xfer
.program
->Base
.Base
,
131 struct gl_program
*p
= &stfp
->Base
.Base
;
132 printf("Combined DrawPixels program:\n");
133 _mesa_print_program(p
);
134 printf("InputsRead: 0x%x\n", p
->InputsRead
);
135 printf("OutputsWritten: 0x%x\n", p
->OutputsWritten
);
136 _mesa_print_parameter_list(p
->Parameters
);
140 /* translate to TGSI tokens */
141 st_translate_fragment_program(st
, stfp
, NULL
);
143 /* save new program, update serial numbers */
144 st
->pixel_xfer
.xfer_prog_sn
= st
->pixel_xfer
.program
->serialNo
;
145 st
->pixel_xfer
.user_prog_sn
= st
->fp
->serialNo
;
146 st
->pixel_xfer
.combined_prog_sn
= stfp
->serialNo
;
147 st
->pixel_xfer
.combined_prog
= stfp
;
150 /* Ideally we'd have updated the pipe constants during the normal
151 * st/atom mechanism. But we can't since this is specific to glDrawPixels.
153 st_upload_constants(st
, stfp
->Base
.Base
.Parameters
, PIPE_SHADER_FRAGMENT
);
160 * Create fragment shader that does a TEX() instruction to get a Z
161 * value, then writes to FRAG_RESULT_DEPTH.
162 * Pass fragment color through as-is.
164 static struct st_fragment_program
*
165 make_fragment_shader_z(struct st_context
*st
)
167 GLcontext
*ctx
= st
->ctx
;
168 struct gl_program
*p
;
171 if (st
->drawpix
.z_shader
) {
172 return st
->drawpix
.z_shader
;
178 p
= ctx
->Driver
.NewProgram(ctx
, GL_FRAGMENT_PROGRAM_ARB
, 0);
182 p
->NumInstructions
= 3;
184 p
->Instructions
= _mesa_alloc_instructions(p
->NumInstructions
);
185 if (!p
->Instructions
) {
186 ctx
->Driver
.DeleteProgram(ctx
, p
);
189 _mesa_init_instructions(p
->Instructions
, p
->NumInstructions
);
191 /* TEX result.depth, fragment.texcoord[0], texture[0], 2D; */
192 p
->Instructions
[ic
].Opcode
= OPCODE_TEX
;
193 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
194 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_DEPTH
;
195 p
->Instructions
[ic
].DstReg
.WriteMask
= WRITEMASK_Z
;
196 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
197 p
->Instructions
[ic
].SrcReg
[0].Index
= FRAG_ATTRIB_TEX0
;
198 p
->Instructions
[ic
].TexSrcUnit
= 0;
199 p
->Instructions
[ic
].TexSrcTarget
= TEXTURE_2D_INDEX
;
202 /* MOV result.color, fragment.color */
203 p
->Instructions
[ic
].Opcode
= OPCODE_MOV
;
204 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
205 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_COLOR
;
206 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
207 p
->Instructions
[ic
].SrcReg
[0].Index
= FRAG_ATTRIB_COL0
;
211 p
->Instructions
[ic
++].Opcode
= OPCODE_END
;
213 assert(ic
== p
->NumInstructions
);
215 p
->InputsRead
= FRAG_BIT_TEX0
| FRAG_BIT_COL0
;
216 p
->OutputsWritten
= (1 << FRAG_RESULT_COLOR
) | (1 << FRAG_RESULT_DEPTH
);
217 p
->SamplersUsed
= 0x1; /* sampler 0 (bit 0) is used */
219 st
->drawpix
.z_shader
= (struct st_fragment_program
*) p
;
220 st_translate_fragment_program(st
, st
->drawpix
.z_shader
, NULL
);
222 return st
->drawpix
.z_shader
;
228 * Create a simple vertex shader that just passes through the
229 * vertex position and texcoord (and optionally, color).
231 static struct st_vertex_program
*
232 st_make_passthrough_vertex_shader(struct st_context
*st
, GLboolean passColor
)
234 GLcontext
*ctx
= st
->ctx
;
235 struct st_vertex_program
*stvp
;
236 struct gl_program
*p
;
239 if (st
->drawpix
.vert_shaders
[passColor
])
240 return st
->drawpix
.vert_shaders
[passColor
];
245 p
= ctx
->Driver
.NewProgram(ctx
, GL_VERTEX_PROGRAM_ARB
, 0);
250 p
->NumInstructions
= 4;
252 p
->NumInstructions
= 3;
254 p
->Instructions
= _mesa_alloc_instructions(p
->NumInstructions
);
255 if (!p
->Instructions
) {
256 ctx
->Driver
.DeleteProgram(ctx
, p
);
259 _mesa_init_instructions(p
->Instructions
, p
->NumInstructions
);
260 /* MOV result.pos, vertex.pos; */
261 p
->Instructions
[0].Opcode
= OPCODE_MOV
;
262 p
->Instructions
[0].DstReg
.File
= PROGRAM_OUTPUT
;
263 p
->Instructions
[0].DstReg
.Index
= VERT_RESULT_HPOS
;
264 p
->Instructions
[0].SrcReg
[0].File
= PROGRAM_INPUT
;
265 p
->Instructions
[0].SrcReg
[0].Index
= VERT_ATTRIB_POS
;
266 /* MOV result.texcoord0, vertex.texcoord0; */
267 p
->Instructions
[1].Opcode
= OPCODE_MOV
;
268 p
->Instructions
[1].DstReg
.File
= PROGRAM_OUTPUT
;
269 p
->Instructions
[1].DstReg
.Index
= VERT_RESULT_TEX0
;
270 p
->Instructions
[1].SrcReg
[0].File
= PROGRAM_INPUT
;
271 p
->Instructions
[1].SrcReg
[0].Index
= VERT_ATTRIB_TEX0
;
274 /* MOV result.color0, vertex.color0; */
275 p
->Instructions
[ic
].Opcode
= OPCODE_MOV
;
276 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
277 p
->Instructions
[ic
].DstReg
.Index
= VERT_RESULT_COL0
;
278 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
279 p
->Instructions
[ic
].SrcReg
[0].Index
= VERT_ATTRIB_COLOR0
;
284 p
->Instructions
[ic
].Opcode
= OPCODE_END
;
287 assert(ic
== p
->NumInstructions
);
289 p
->InputsRead
= VERT_BIT_POS
| VERT_BIT_TEX0
;
290 p
->OutputsWritten
= ((1 << VERT_RESULT_TEX0
) |
291 (1 << VERT_RESULT_HPOS
));
293 p
->InputsRead
|= VERT_BIT_COLOR0
;
294 p
->OutputsWritten
|= (1 << VERT_RESULT_COL0
);
297 stvp
= (struct st_vertex_program
*) p
;
298 st_translate_vertex_program(st
, stvp
, NULL
, NULL
, NULL
);
300 st
->drawpix
.vert_shaders
[passColor
] = stvp
;
307 _mesa_base_format(GLenum format
)
310 case GL_DEPTH_COMPONENT
:
311 return GL_DEPTH_COMPONENT
;
312 case GL_DEPTH_STENCIL
:
313 return GL_DEPTH_STENCIL
;
314 case GL_STENCIL_INDEX
:
315 return GL_STENCIL_INDEX
;
323 * Make texture containing an image for glDrawPixels image.
324 * If 'pixels' is NULL, leave the texture image data undefined.
326 static struct pipe_texture
*
327 make_texture(struct st_context
*st
,
328 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
329 const struct gl_pixelstore_attrib
*unpack
,
330 const GLvoid
*pixels
)
332 GLcontext
*ctx
= st
->ctx
;
333 struct pipe_context
*pipe
= st
->pipe
;
334 struct pipe_screen
*screen
= pipe
->screen
;
335 const struct gl_texture_format
*mformat
;
336 struct pipe_texture
*pt
;
337 enum pipe_format pipeFormat
;
341 baseFormat
= _mesa_base_format(format
);
343 mformat
= st_ChooseTextureFormat(ctx
, baseFormat
, format
, type
);
346 pipeFormat
= st_mesa_format_to_pipe_format(mformat
->MesaFormat
);
348 cpp
= st_sizeof_format(pipeFormat
);
350 pixels
= _mesa_map_drawpix_pbo(ctx
, unpack
, pixels
);
354 pt
= st_texture_create(st
, PIPE_TEXTURE_2D
, pipeFormat
, 0, width
, height
, 1,
355 PIPE_TEXTURE_USAGE_SAMPLER
);
357 _mesa_unmap_drawpix_pbo(ctx
, unpack
);
362 struct pipe_transfer
*transfer
;
363 static const GLuint dstImageOffsets
= 0;
366 const GLbitfield imageTransferStateSave
= ctx
->_ImageTransferState
;
368 /* we'll do pixel transfer in a fragment shader */
369 ctx
->_ImageTransferState
= 0x0;
371 transfer
= screen
->get_tex_transfer(screen
, pt
, 0, 0, 0,
372 PIPE_TRANSFER_WRITE
, 0, 0,
375 /* map texture transfer */
376 dest
= screen
->transfer_map(screen
, transfer
);
378 /* Put image into texture transfer.
379 * Note that the image is actually going to be upside down in
380 * the texture. We deal with that with texcoords.
382 success
= mformat
->StoreImage(ctx
, 2, /* dims */
383 baseFormat
, /* baseInternalFormat */
384 mformat
, /* gl_texture_format */
386 0, 0, 0, /* dstX/Y/Zoffset */
387 transfer
->stride
, /* dstRowStride, bytes */
388 &dstImageOffsets
, /* dstImageOffsets */
389 width
, height
, 1, /* size */
390 format
, type
, /* src format/type */
391 pixels
, /* data source */
395 screen
->transfer_unmap(screen
, transfer
);
396 screen
->tex_transfer_destroy(transfer
);
401 ctx
->_ImageTransferState
= imageTransferStateSave
;
404 _mesa_unmap_drawpix_pbo(ctx
, unpack
);
411 * Draw quad with texcoords and optional color.
412 * Coords are window coords with y=0=bottom.
413 * \param color may be null
414 * \param invertTex if true, flip texcoords vertically
417 draw_quad(GLcontext
*ctx
, GLfloat x0
, GLfloat y0
, GLfloat z
,
418 GLfloat x1
, GLfloat y1
, const GLfloat
*color
,
421 struct st_context
*st
= ctx
->st
;
422 struct pipe_context
*pipe
= ctx
->st
->pipe
;
423 GLfloat verts
[4][3][4]; /* four verts, three attribs, XYZW */
425 /* setup vertex data */
427 const struct gl_framebuffer
*fb
= st
->ctx
->DrawBuffer
;
428 const GLfloat fb_width
= (GLfloat
) fb
->Width
;
429 const GLfloat fb_height
= (GLfloat
) fb
->Height
;
430 const GLfloat clip_x0
= x0
/ fb_width
* 2.0f
- 1.0f
;
431 const GLfloat clip_y0
= y0
/ fb_height
* 2.0f
- 1.0f
;
432 const GLfloat clip_x1
= x1
/ fb_width
* 2.0f
- 1.0f
;
433 const GLfloat clip_y1
= y1
/ fb_height
* 2.0f
- 1.0f
;
434 const GLfloat sLeft
= 0.0f
, sRight
= 1.0f
;
435 const GLfloat tTop
= invertTex
, tBot
= 1.0f
- tTop
;
439 verts
[0][0][0] = clip_x0
; /* v[0].attr[0].x */
440 verts
[0][0][1] = clip_y0
; /* v[0].attr[0].y */
443 verts
[1][0][0] = clip_x1
;
444 verts
[1][0][1] = clip_y0
;
447 verts
[2][0][0] = clip_x1
;
448 verts
[2][0][1] = clip_y1
;
451 verts
[3][0][0] = clip_x0
;
452 verts
[3][0][1] = clip_y1
;
455 verts
[0][tex
][0] = sLeft
; /* v[0].attr[tex].s */
456 verts
[0][tex
][1] = tTop
; /* v[0].attr[tex].t */
457 verts
[1][tex
][0] = sRight
;
458 verts
[1][tex
][1] = tTop
;
459 verts
[2][tex
][0] = sRight
;
460 verts
[2][tex
][1] = tBot
;
461 verts
[3][tex
][0] = sLeft
;
462 verts
[3][tex
][1] = tBot
;
464 /* same for all verts: */
466 for (i
= 0; i
< 4; i
++) {
467 verts
[i
][0][2] = z
; /*Z*/
468 verts
[i
][0][3] = 1.0f
; /*W*/
469 verts
[i
][1][0] = color
[0];
470 verts
[i
][1][1] = color
[1];
471 verts
[i
][1][2] = color
[2];
472 verts
[i
][1][3] = color
[3];
473 verts
[i
][2][2] = 0.0f
; /*R*/
474 verts
[i
][2][3] = 1.0f
; /*Q*/
478 for (i
= 0; i
< 4; i
++) {
479 verts
[i
][0][2] = z
; /*Z*/
480 verts
[i
][0][3] = 1.0f
; /*W*/
481 verts
[i
][1][2] = 0.0f
; /*R*/
482 verts
[i
][1][3] = 1.0f
; /*Q*/
488 struct pipe_buffer
*buf
;
490 /* allocate/load buffer object with vertex data */
491 buf
= pipe_buffer_create(pipe
->screen
, 32, PIPE_BUFFER_USAGE_VERTEX
,
493 pipe_buffer_write(pipe
->screen
, buf
, 0, sizeof(verts
), verts
);
495 util_draw_vertex_buffer(pipe
, buf
, 0,
498 3); /* attribs/vert */
499 pipe_buffer_reference(&buf
, NULL
);
506 draw_textured_quad(GLcontext
*ctx
, GLint x
, GLint y
, GLfloat z
,
507 GLsizei width
, GLsizei height
,
508 GLfloat zoomX
, GLfloat zoomY
,
509 struct pipe_texture
*pt
,
510 struct st_vertex_program
*stvp
,
511 struct st_fragment_program
*stfp
,
512 const GLfloat
*color
,
515 struct st_context
*st
= ctx
->st
;
516 struct pipe_context
*pipe
= ctx
->st
->pipe
;
517 struct cso_context
*cso
= ctx
->st
->cso_context
;
518 GLfloat x0
, y0
, x1
, y1
;
522 /* XXX if DrawPixels image is larger than max texture size, break
525 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
526 assert(width
<= maxSize
);
527 assert(height
<= maxSize
);
529 cso_save_rasterizer(cso
);
530 cso_save_viewport(cso
);
531 cso_save_samplers(cso
);
532 cso_save_sampler_textures(cso
);
533 cso_save_fragment_shader(cso
);
534 cso_save_vertex_shader(cso
);
536 /* rasterizer state: just scissor */
538 struct pipe_rasterizer_state rasterizer
;
539 memset(&rasterizer
, 0, sizeof(rasterizer
));
540 rasterizer
.gl_rasterization_rules
= 1;
541 rasterizer
.scissor
= ctx
->Scissor
.Enabled
;
542 cso_set_rasterizer(cso
, &rasterizer
);
545 /* fragment shader state: TEX lookup program */
546 cso_set_fragment_shader_handle(cso
, stfp
->driver_shader
);
548 /* vertex shader state: position + texcoord pass-through */
549 cso_set_vertex_shader_handle(cso
, stvp
->driver_shader
);
552 /* texture sampling state: */
554 struct pipe_sampler_state sampler
;
555 memset(&sampler
, 0, sizeof(sampler
));
556 sampler
.wrap_s
= PIPE_TEX_WRAP_CLAMP
;
557 sampler
.wrap_t
= PIPE_TEX_WRAP_CLAMP
;
558 sampler
.wrap_r
= PIPE_TEX_WRAP_CLAMP
;
559 sampler
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
560 sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
561 sampler
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
562 sampler
.normalized_coords
= 1;
564 cso_single_sampler(cso
, 0, &sampler
);
565 if (st
->pixel_xfer
.pixelmap_enabled
) {
566 cso_single_sampler(cso
, 1, &sampler
);
568 cso_single_sampler_done(cso
);
571 /* viewport state: viewport matching window dims */
573 const float width
= (float) ctx
->DrawBuffer
->Width
;
574 const float height
= (float) ctx
->DrawBuffer
->Height
;
575 struct pipe_viewport_state vp
;
576 vp
.scale
[0] = 0.5f
* width
;
577 vp
.scale
[1] = -0.5f
* height
;
580 vp
.translate
[0] = 0.5f
* width
;
581 vp
.translate
[1] = 0.5f
* height
;
582 vp
.translate
[2] = 0.0f
;
583 vp
.translate
[3] = 0.0f
;
584 cso_set_viewport(cso
, &vp
);
588 if (st
->pixel_xfer
.pixelmap_enabled
) {
589 struct pipe_texture
*textures
[2];
591 textures
[1] = st
->pixel_xfer
.pixelmap_texture
;
592 pipe
->set_sampler_textures(pipe
, 2, textures
);
595 pipe
->set_sampler_textures(pipe
, 1, &pt
);
598 /* Compute window coords (y=0=bottom) with pixel zoom.
599 * Recall that these coords are transformed by the current
600 * vertex shader and viewport transformation.
603 x1
= x
+ width
* ctx
->Pixel
.ZoomX
;
605 y1
= y
+ height
* ctx
->Pixel
.ZoomY
;
607 draw_quad(ctx
, x0
, y0
, z
, x1
, y1
, color
, invertTex
);
610 cso_restore_rasterizer(cso
);
611 cso_restore_viewport(cso
);
612 cso_restore_samplers(cso
);
613 cso_restore_sampler_textures(cso
);
614 cso_restore_fragment_shader(cso
);
615 cso_restore_vertex_shader(cso
);
620 draw_stencil_pixels(GLcontext
*ctx
, GLint x
, GLint y
,
621 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
622 const struct gl_pixelstore_attrib
*unpack
,
623 const GLvoid
*pixels
)
625 struct st_context
*st
= ctx
->st
;
626 struct pipe_context
*pipe
= st
->pipe
;
627 struct pipe_screen
*screen
= pipe
->screen
;
628 struct st_renderbuffer
*strb
;
629 struct pipe_transfer
*pt
;
630 const GLboolean zoom
= ctx
->Pixel
.ZoomX
!= 1.0 || ctx
->Pixel
.ZoomY
!= 1.0;
634 pipe
->flush(pipe
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
636 strb
= st_renderbuffer(ctx
->DrawBuffer
->
637 Attachment
[BUFFER_STENCIL
].Renderbuffer
);
639 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
640 y
= ctx
->DrawBuffer
->Height
- y
- height
;
643 pt
= screen
->get_tex_transfer(screen
, strb
->texture
, 0, 0, 0,
644 PIPE_TRANSFER_WRITE
, x
, y
,
647 stmap
= screen
->transfer_map(screen
, pt
);
649 pixels
= _mesa_map_drawpix_pbo(ctx
, unpack
, pixels
);
652 /* if width > MAX_WIDTH, have to process image in chunks */
654 while (skipPixels
< width
) {
655 const GLint spanX
= skipPixels
;
656 const GLint spanWidth
= MIN2(width
- skipPixels
, MAX_WIDTH
);
658 for (row
= 0; row
< height
; row
++) {
659 GLubyte sValues
[MAX_WIDTH
];
660 GLuint zValues
[MAX_WIDTH
];
661 GLenum destType
= GL_UNSIGNED_BYTE
;
662 const GLvoid
*source
= _mesa_image_address2d(unpack
, pixels
,
666 _mesa_unpack_stencil_span(ctx
, spanWidth
, destType
, sValues
,
667 type
, source
, unpack
,
668 ctx
->_ImageTransferState
);
670 if (format
== GL_DEPTH_STENCIL
) {
671 _mesa_unpack_depth_span(ctx
, spanWidth
, GL_UNSIGNED_INT
, zValues
,
672 (1 << 24) - 1, type
, source
, unpack
);
676 _mesa_problem(ctx
, "Gallium glDrawPixels(GL_STENCIL) with "
677 "zoom not complete");
683 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
684 spanY
= height
- row
- 1;
690 /* now pack the stencil (and Z) values in the dest format */
691 switch (pt
->format
) {
692 case PIPE_FORMAT_S8_UNORM
:
694 ubyte
*dest
= stmap
+ spanY
* pt
->stride
+ spanX
;
695 memcpy(dest
, sValues
, spanWidth
);
698 case PIPE_FORMAT_S8Z24_UNORM
:
699 if (format
== GL_DEPTH_STENCIL
) {
700 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
702 for (k
= 0; k
< spanWidth
; k
++) {
703 dest
[k
] = zValues
[k
] | (sValues
[k
] << 24);
707 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
709 for (k
= 0; k
< spanWidth
; k
++) {
710 dest
[k
] = (dest
[k
] & 0xffffff) | (sValues
[k
] << 24);
714 case PIPE_FORMAT_Z24S8_UNORM
:
715 if (format
== GL_DEPTH_STENCIL
) {
716 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
718 for (k
= 0; k
< spanWidth
; k
++) {
719 dest
[k
] = zValues
[k
] | (sValues
[k
] << 24);
723 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
725 for (k
= 0; k
< spanWidth
; k
++) {
726 dest
[k
] = (dest
[k
] & 0xffffff00) | (sValues
[k
] & 0xff);
735 skipPixels
+= spanWidth
;
738 _mesa_unmap_drawpix_pbo(ctx
, unpack
);
740 /* unmap the stencil buffer */
741 screen
->transfer_unmap(screen
, pt
);
742 screen
->tex_transfer_destroy(pt
);
747 * Called via ctx->Driver.DrawPixels()
750 st_DrawPixels(GLcontext
*ctx
, GLint x
, GLint y
, GLsizei width
, GLsizei height
,
751 GLenum format
, GLenum type
,
752 const struct gl_pixelstore_attrib
*unpack
, const GLvoid
*pixels
)
754 struct st_fragment_program
*stfp
;
755 struct st_vertex_program
*stvp
;
756 struct st_context
*st
= ctx
->st
;
757 struct pipe_surface
*ps
;
759 const GLfloat
*color
;
761 if (format
== GL_STENCIL_INDEX
||
762 format
== GL_DEPTH_STENCIL
) {
763 draw_stencil_pixels(ctx
, x
, y
, width
, height
, format
, type
,
768 _mesa_set_vp_override( ctx
, TRUE
);
769 _mesa_update_state( ctx
);
771 st_validate_state(st
);
773 if (format
== GL_DEPTH_COMPONENT
) {
774 ps
= st
->state
.framebuffer
.zsbuf
;
775 stfp
= make_fragment_shader_z(ctx
->st
);
776 stvp
= st_make_passthrough_vertex_shader(ctx
->st
, GL_TRUE
);
777 color
= ctx
->Current
.RasterColor
;
780 ps
= st
->state
.framebuffer
.cbufs
[0];
781 stfp
= combined_drawpix_fragment_program(ctx
);
782 stvp
= st_make_passthrough_vertex_shader(ctx
->st
, GL_FALSE
);
786 bufferFormat
= ps
->format
;
788 /* draw with textured quad */
790 struct pipe_texture
*pt
791 = make_texture(ctx
->st
, width
, height
, format
, type
, unpack
, pixels
);
793 draw_textured_quad(ctx
, x
, y
, ctx
->Current
.RasterPos
[2],
794 width
, height
, ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
795 pt
, stvp
, stfp
, color
, GL_FALSE
);
796 pipe_texture_reference(&pt
, NULL
);
800 _mesa_set_vp_override( ctx
, FALSE
);
806 copy_stencil_pixels(GLcontext
*ctx
, GLint srcx
, GLint srcy
,
807 GLsizei width
, GLsizei height
,
808 GLint dstx
, GLint dsty
)
810 struct st_renderbuffer
*rbDraw
= st_renderbuffer(ctx
->DrawBuffer
->_StencilBuffer
);
811 struct pipe_screen
*screen
= ctx
->st
->pipe
->screen
;
812 struct pipe_transfer
*ptDraw
;
817 buffer
= _mesa_malloc(width
* height
* sizeof(ubyte
));
819 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCopyPixels(stencil)");
823 /* this will do stencil pixel transfer ops */
824 st_read_stencil_pixels(ctx
, srcx
, srcy
, width
, height
,
825 GL_STENCIL_INDEX
, GL_UNSIGNED_BYTE
,
826 &ctx
->DefaultPacking
, buffer
);
828 ptDraw
= screen
->get_tex_transfer(screen
, rbDraw
->texture
, 0, 0, 0,
829 PIPE_TRANSFER_WRITE
, dstx
, dsty
,
832 assert(ptDraw
->block
.width
== 1);
833 assert(ptDraw
->block
.height
== 1);
835 /* map the stencil buffer */
836 drawMap
= screen
->transfer_map(screen
, ptDraw
);
839 /* XXX PixelZoom not handled yet */
840 for (i
= 0; i
< height
; i
++) {
847 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
851 dst
= drawMap
+ y
* ptDraw
->stride
;
852 src
= buffer
+ i
* width
;
854 switch (ptDraw
->format
) {
855 case PIPE_FORMAT_S8Z24_UNORM
:
857 uint
*dst4
= (uint
*) dst
;
859 for (j
= 0; j
< width
; j
++) {
860 *dst4
= (*dst4
& 0xffffff) | (src
[j
] << 24);
865 case PIPE_FORMAT_Z24S8_UNORM
:
867 uint
*dst4
= (uint
*) dst
;
869 for (j
= 0; j
< width
; j
++) {
870 *dst4
= (*dst4
& 0xffffff00) | (src
[j
] & 0xff);
875 case PIPE_FORMAT_S8_UNORM
:
876 memcpy(dst
, src
, width
);
885 /* unmap the stencil buffer */
886 screen
->transfer_unmap(screen
, ptDraw
);
887 screen
->tex_transfer_destroy(ptDraw
);
892 st_CopyPixels(GLcontext
*ctx
, GLint srcx
, GLint srcy
,
893 GLsizei width
, GLsizei height
,
894 GLint dstx
, GLint dsty
, GLenum type
)
896 struct st_context
*st
= ctx
->st
;
897 struct pipe_context
*pipe
= st
->pipe
;
898 struct pipe_screen
*screen
= pipe
->screen
;
899 struct st_renderbuffer
*rbRead
;
900 struct st_vertex_program
*stvp
;
901 struct st_fragment_program
*stfp
;
902 struct pipe_texture
*pt
;
904 enum pipe_format srcFormat
, texFormat
;
906 /* make sure rendering has completed */
907 pipe
->flush(pipe
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
909 st_validate_state(st
);
911 if (type
== GL_STENCIL
) {
912 /* can't use texturing to do stencil */
913 copy_stencil_pixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
);
917 if (type
== GL_COLOR
) {
918 rbRead
= st_get_color_read_renderbuffer(ctx
);
920 stfp
= combined_drawpix_fragment_program(ctx
);
921 stvp
= st_make_passthrough_vertex_shader(ctx
->st
, GL_FALSE
);
924 assert(type
== GL_DEPTH
);
925 rbRead
= st_renderbuffer(ctx
->ReadBuffer
->_DepthBuffer
);
926 color
= ctx
->Current
.Attrib
[VERT_ATTRIB_COLOR0
];
927 stfp
= make_fragment_shader_z(ctx
->st
);
928 stvp
= st_make_passthrough_vertex_shader(ctx
->st
, GL_TRUE
);
931 srcFormat
= rbRead
->texture
->format
;
933 if (screen
->is_format_supported(screen
, srcFormat
, PIPE_TEXTURE_2D
,
934 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
935 texFormat
= srcFormat
;
938 /* srcFormat can't be used as a texture format */
939 if (type
== GL_DEPTH
) {
940 texFormat
= st_choose_format(pipe
, GL_DEPTH_COMPONENT
, PIPE_TEXTURE_2D
,
941 PIPE_TEXTURE_USAGE_DEPTH_STENCIL
);
942 assert(texFormat
!= PIPE_FORMAT_NONE
); /* XXX no depth texture formats??? */
945 /* default color format */
946 texFormat
= st_choose_format(pipe
, GL_RGBA
, PIPE_TEXTURE_2D
,
947 PIPE_TEXTURE_USAGE_SAMPLER
);
948 assert(texFormat
!= PIPE_FORMAT_NONE
);
952 pt
= st_texture_create(ctx
->st
, PIPE_TEXTURE_2D
, texFormat
, 0,
954 PIPE_TEXTURE_USAGE_SAMPLER
);
958 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
959 srcy
= ctx
->DrawBuffer
->Height
- srcy
- height
;
962 if (srcFormat
== texFormat
) {
963 /* copy source framebuffer surface into mipmap/texture */
964 struct pipe_surface
*psRead
= screen
->get_tex_surface(screen
,
965 rbRead
->texture
, 0, 0, 0,
966 PIPE_BUFFER_USAGE_GPU_READ
);
967 struct pipe_surface
*psTex
= screen
->get_tex_surface(screen
, pt
, 0, 0, 0,
968 PIPE_BUFFER_USAGE_GPU_WRITE
);
969 pipe
->surface_copy(pipe
,
973 srcx
, srcy
, width
, height
);
974 pipe_surface_reference(&psRead
, NULL
);
975 pipe_surface_reference(&psTex
, NULL
);
978 /* CPU-based fallback/conversion */
979 struct pipe_transfer
*ptRead
=
980 screen
->get_tex_transfer(screen
, rbRead
->texture
, 0, 0, 0,
981 PIPE_TRANSFER_READ
, srcx
, srcy
, width
,
984 struct pipe_transfer
*ptTex
=
985 screen
->get_tex_transfer(screen
, pt
, 0, 0, 0, PIPE_TRANSFER_WRITE
,
986 0, 0, width
, height
);
988 if (type
== GL_COLOR
) {
989 /* alternate path using get/put_tile() */
990 GLfloat
*buf
= (GLfloat
*) _mesa_malloc(width
* height
* 4 * sizeof(GLfloat
));
992 pipe_get_tile_rgba(ptRead
, 0, 0, width
, height
, buf
);
993 pipe_put_tile_rgba(ptTex
, 0, 0, width
, height
, buf
);
999 GLuint
*buf
= (GLuint
*) _mesa_malloc(width
* height
* sizeof(GLuint
));
1000 pipe_get_tile_z(ptRead
, 0, 0, width
, height
, buf
);
1001 pipe_put_tile_z(ptTex
, 0, 0, width
, height
, buf
);
1005 screen
->tex_transfer_destroy(ptRead
);
1006 screen
->tex_transfer_destroy(ptTex
);
1009 /* draw textured quad */
1010 draw_textured_quad(ctx
, dstx
, dsty
, ctx
->Current
.RasterPos
[2],
1011 width
, height
, ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
1012 pt
, stvp
, stfp
, color
, GL_TRUE
);
1014 pipe_texture_reference(&pt
, NULL
);
1019 void st_init_drawpixels_functions(struct dd_function_table
*functions
)
1021 functions
->DrawPixels
= st_DrawPixels
;
1022 functions
->CopyPixels
= st_CopyPixels
;
1027 st_destroy_drawpix(struct st_context
*st
)
1029 st_reference_fragprog(st
, &st
->drawpix
.z_shader
, NULL
);
1030 st_reference_fragprog(st
, &st
->pixel_xfer
.combined_prog
, NULL
);
1031 st_reference_vertprog(st
, &st
->drawpix
.vert_shaders
[0], NULL
);
1032 st_reference_vertprog(st
, &st
->drawpix
.vert_shaders
[1], NULL
);