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 "st_inlines.h"
58 #include "pipe/p_context.h"
59 #include "pipe/p_defines.h"
60 #include "pipe/p_inlines.h"
61 #include "util/u_tile.h"
62 #include "util/u_draw_quad.h"
63 #include "util/u_math.h"
64 #include "shader/prog_instruction.h"
65 #include "cso_cache/cso_context.h"
69 * Check if the given program is:
70 * 0: MOVE result.color, fragment.color;
74 is_passthrough_program(const struct gl_fragment_program
*prog
)
76 if (prog
->Base
.NumInstructions
== 2) {
77 const struct prog_instruction
*inst
= prog
->Base
.Instructions
;
78 if (inst
[0].Opcode
== OPCODE_MOV
&&
79 inst
[1].Opcode
== OPCODE_END
&&
80 inst
[0].DstReg
.File
== PROGRAM_OUTPUT
&&
81 inst
[0].DstReg
.Index
== FRAG_RESULT_COLOR
&&
82 inst
[0].DstReg
.WriteMask
== WRITEMASK_XYZW
&&
83 inst
[0].SrcReg
[0].File
== PROGRAM_INPUT
&&
84 inst
[0].SrcReg
[0].Index
== FRAG_ATTRIB_COL0
&&
85 inst
[0].SrcReg
[0].Swizzle
== SWIZZLE_XYZW
) {
95 * Make fragment shader for glDraw/CopyPixels. This shader is made
96 * by combining the pixel transfer shader with the user-defined shader.
98 static struct st_fragment_program
*
99 combined_drawpix_fragment_program(GLcontext
*ctx
)
101 struct st_context
*st
= st_context(ctx
);
102 struct st_fragment_program
*stfp
;
104 if (st
->pixel_xfer
.program
->serialNo
== st
->pixel_xfer
.xfer_prog_sn
105 && st
->fp
->serialNo
== st
->pixel_xfer
.user_prog_sn
) {
106 /* the pixel tranfer program has not changed and the user-defined
107 * program has not changed, so re-use the combined program.
109 stfp
= st
->pixel_xfer
.combined_prog
;
112 /* Concatenate the pixel transfer program with the current user-
115 if (is_passthrough_program(&st
->fp
->Base
)) {
116 stfp
= (struct st_fragment_program
*)
117 _mesa_clone_program(ctx
, &st
->pixel_xfer
.program
->Base
.Base
);
121 printf("Base program:\n");
122 _mesa_print_program(&st
->fp
->Base
.Base
);
123 printf("DrawPix program:\n");
124 _mesa_print_program(&st
->pixel_xfer
.program
->Base
.Base
);
126 stfp
= (struct st_fragment_program
*)
127 _mesa_combine_programs(ctx
,
128 &st
->pixel_xfer
.program
->Base
.Base
,
134 struct gl_program
*p
= &stfp
->Base
.Base
;
135 printf("Combined DrawPixels program:\n");
136 _mesa_print_program(p
);
137 printf("InputsRead: 0x%x\n", p
->InputsRead
);
138 printf("OutputsWritten: 0x%x\n", p
->OutputsWritten
);
139 _mesa_print_parameter_list(p
->Parameters
);
143 /* translate to TGSI tokens */
144 st_translate_fragment_program(st
, stfp
, NULL
);
146 /* save new program, update serial numbers */
147 st
->pixel_xfer
.xfer_prog_sn
= st
->pixel_xfer
.program
->serialNo
;
148 st
->pixel_xfer
.user_prog_sn
= st
->fp
->serialNo
;
149 st
->pixel_xfer
.combined_prog_sn
= stfp
->serialNo
;
150 /* can't reference new program directly, already have a reference on it */
151 st_reference_fragprog(st
, &st
->pixel_xfer
.combined_prog
, NULL
);
152 st
->pixel_xfer
.combined_prog
= stfp
;
155 /* Ideally we'd have updated the pipe constants during the normal
156 * st/atom mechanism. But we can't since this is specific to glDrawPixels.
158 st_upload_constants(st
, stfp
->Base
.Base
.Parameters
, PIPE_SHADER_FRAGMENT
);
165 * Create fragment shader that does a TEX() instruction to get a Z
166 * value, then writes to FRAG_RESULT_DEPTH.
167 * Pass fragment color through as-is.
169 static struct st_fragment_program
*
170 make_fragment_shader_z(struct st_context
*st
)
172 GLcontext
*ctx
= st
->ctx
;
173 struct gl_program
*p
;
176 if (st
->drawpix
.z_shader
) {
177 return st
->drawpix
.z_shader
;
183 p
= ctx
->Driver
.NewProgram(ctx
, GL_FRAGMENT_PROGRAM_ARB
, 0);
187 p
->NumInstructions
= 3;
189 p
->Instructions
= _mesa_alloc_instructions(p
->NumInstructions
);
190 if (!p
->Instructions
) {
191 ctx
->Driver
.DeleteProgram(ctx
, p
);
194 _mesa_init_instructions(p
->Instructions
, p
->NumInstructions
);
196 /* TEX result.depth, fragment.texcoord[0], texture[0], 2D; */
197 p
->Instructions
[ic
].Opcode
= OPCODE_TEX
;
198 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
199 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_DEPTH
;
200 p
->Instructions
[ic
].DstReg
.WriteMask
= WRITEMASK_Z
;
201 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
202 p
->Instructions
[ic
].SrcReg
[0].Index
= FRAG_ATTRIB_TEX0
;
203 p
->Instructions
[ic
].TexSrcUnit
= 0;
204 p
->Instructions
[ic
].TexSrcTarget
= TEXTURE_2D_INDEX
;
207 /* MOV result.color, fragment.color */
208 p
->Instructions
[ic
].Opcode
= OPCODE_MOV
;
209 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
210 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_COLOR
;
211 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
212 p
->Instructions
[ic
].SrcReg
[0].Index
= FRAG_ATTRIB_COL0
;
216 p
->Instructions
[ic
++].Opcode
= OPCODE_END
;
218 assert(ic
== p
->NumInstructions
);
220 p
->InputsRead
= FRAG_BIT_TEX0
| FRAG_BIT_COL0
;
221 p
->OutputsWritten
= (1 << FRAG_RESULT_COLOR
) | (1 << FRAG_RESULT_DEPTH
);
222 p
->SamplersUsed
= 0x1; /* sampler 0 (bit 0) is used */
224 st
->drawpix
.z_shader
= (struct st_fragment_program
*) p
;
225 st_translate_fragment_program(st
, st
->drawpix
.z_shader
, NULL
);
227 return st
->drawpix
.z_shader
;
233 * Create a simple vertex shader that just passes through the
234 * vertex position and texcoord (and optionally, color).
236 static struct st_vertex_program
*
237 st_make_passthrough_vertex_shader(struct st_context
*st
, GLboolean passColor
)
239 GLcontext
*ctx
= st
->ctx
;
240 struct st_vertex_program
*stvp
;
241 struct gl_program
*p
;
244 if (st
->drawpix
.vert_shaders
[passColor
])
245 return st
->drawpix
.vert_shaders
[passColor
];
250 p
= ctx
->Driver
.NewProgram(ctx
, GL_VERTEX_PROGRAM_ARB
, 0);
255 p
->NumInstructions
= 4;
257 p
->NumInstructions
= 3;
259 p
->Instructions
= _mesa_alloc_instructions(p
->NumInstructions
);
260 if (!p
->Instructions
) {
261 ctx
->Driver
.DeleteProgram(ctx
, p
);
264 _mesa_init_instructions(p
->Instructions
, p
->NumInstructions
);
265 /* MOV result.pos, vertex.pos; */
266 p
->Instructions
[0].Opcode
= OPCODE_MOV
;
267 p
->Instructions
[0].DstReg
.File
= PROGRAM_OUTPUT
;
268 p
->Instructions
[0].DstReg
.Index
= VERT_RESULT_HPOS
;
269 p
->Instructions
[0].SrcReg
[0].File
= PROGRAM_INPUT
;
270 p
->Instructions
[0].SrcReg
[0].Index
= VERT_ATTRIB_POS
;
271 /* MOV result.texcoord0, vertex.texcoord0; */
272 p
->Instructions
[1].Opcode
= OPCODE_MOV
;
273 p
->Instructions
[1].DstReg
.File
= PROGRAM_OUTPUT
;
274 p
->Instructions
[1].DstReg
.Index
= VERT_RESULT_TEX0
;
275 p
->Instructions
[1].SrcReg
[0].File
= PROGRAM_INPUT
;
276 p
->Instructions
[1].SrcReg
[0].Index
= VERT_ATTRIB_TEX0
;
279 /* MOV result.color0, vertex.color0; */
280 p
->Instructions
[ic
].Opcode
= OPCODE_MOV
;
281 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
282 p
->Instructions
[ic
].DstReg
.Index
= VERT_RESULT_COL0
;
283 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
284 p
->Instructions
[ic
].SrcReg
[0].Index
= VERT_ATTRIB_COLOR0
;
289 p
->Instructions
[ic
].Opcode
= OPCODE_END
;
292 assert(ic
== p
->NumInstructions
);
294 p
->InputsRead
= VERT_BIT_POS
| VERT_BIT_TEX0
;
295 p
->OutputsWritten
= ((1 << VERT_RESULT_TEX0
) |
296 (1 << VERT_RESULT_HPOS
));
298 p
->InputsRead
|= VERT_BIT_COLOR0
;
299 p
->OutputsWritten
|= (1 << VERT_RESULT_COL0
);
302 stvp
= (struct st_vertex_program
*) p
;
303 st_translate_vertex_program(st
, stvp
, NULL
, NULL
, NULL
);
305 st
->drawpix
.vert_shaders
[passColor
] = stvp
;
312 _mesa_base_format(GLenum format
)
315 case GL_DEPTH_COMPONENT
:
316 return GL_DEPTH_COMPONENT
;
317 case GL_DEPTH_STENCIL
:
318 return GL_DEPTH_STENCIL
;
319 case GL_STENCIL_INDEX
:
320 return GL_STENCIL_INDEX
;
328 * Make texture containing an image for glDrawPixels image.
329 * If 'pixels' is NULL, leave the texture image data undefined.
331 static struct pipe_texture
*
332 make_texture(struct st_context
*st
,
333 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
334 const struct gl_pixelstore_attrib
*unpack
,
335 const GLvoid
*pixels
)
337 GLcontext
*ctx
= st
->ctx
;
338 struct pipe_context
*pipe
= st
->pipe
;
339 struct pipe_screen
*screen
= pipe
->screen
;
340 const struct gl_texture_format
*mformat
;
341 struct pipe_texture
*pt
;
342 enum pipe_format pipeFormat
;
347 baseFormat
= _mesa_base_format(format
);
349 mformat
= st_ChooseTextureFormat(ctx
, baseFormat
, format
, type
);
352 pipeFormat
= st_mesa_format_to_pipe_format(mformat
->MesaFormat
);
354 cpp
= st_sizeof_format(pipeFormat
);
356 pixels
= _mesa_map_pbo_source(ctx
, unpack
, pixels
);
360 /* Need to use POT texture? */
363 if (!screen
->get_param(screen
, PIPE_CAP_NPOT_TEXTURES
)) {
366 l2pt
= util_logbase2(width
);
367 if (1<<l2pt
!= width
) {
370 l2pt
= util_logbase2(height
);
371 if (1<<l2pt
!= height
) {
375 /* Check against maximum texture size */
376 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
377 assert(ptw
<= maxSize
);
378 assert(pth
<= maxSize
);
381 pt
= st_texture_create(st
, PIPE_TEXTURE_2D
, pipeFormat
, 0, ptw
, pth
, 1,
382 PIPE_TEXTURE_USAGE_SAMPLER
);
384 _mesa_unmap_pbo_source(ctx
, unpack
);
389 struct pipe_transfer
*transfer
;
390 static const GLuint dstImageOffsets
= 0;
393 const GLbitfield imageTransferStateSave
= ctx
->_ImageTransferState
;
395 /* we'll do pixel transfer in a fragment shader */
396 ctx
->_ImageTransferState
= 0x0;
398 transfer
= st_no_flush_get_tex_transfer(st
, pt
, 0, 0, 0,
399 PIPE_TRANSFER_WRITE
, 0, 0,
402 /* map texture transfer */
403 dest
= screen
->transfer_map(screen
, transfer
);
405 /* Put image into texture transfer.
406 * Note that the image is actually going to be upside down in
407 * the texture. We deal with that with texcoords.
409 success
= mformat
->StoreImage(ctx
, 2, /* dims */
410 baseFormat
, /* baseInternalFormat */
411 mformat
, /* gl_texture_format */
413 0, 0, 0, /* dstX/Y/Zoffset */
414 transfer
->stride
, /* dstRowStride, bytes */
415 &dstImageOffsets
, /* dstImageOffsets */
416 width
, height
, 1, /* size */
417 format
, type
, /* src format/type */
418 pixels
, /* data source */
422 screen
->transfer_unmap(screen
, transfer
);
423 screen
->tex_transfer_destroy(transfer
);
428 ctx
->_ImageTransferState
= imageTransferStateSave
;
431 _mesa_unmap_pbo_source(ctx
, unpack
);
438 * Draw quad with texcoords and optional color.
439 * Coords are window coords with y=0=bottom.
440 * \param color may be null
441 * \param invertTex if true, flip texcoords vertically
444 draw_quad(GLcontext
*ctx
, GLfloat x0
, GLfloat y0
, GLfloat z
,
445 GLfloat x1
, GLfloat y1
, const GLfloat
*color
,
446 GLboolean invertTex
, GLfloat maxXcoord
, GLfloat maxYcoord
)
448 struct st_context
*st
= st_context(ctx
);
449 struct pipe_context
*pipe
= st
->pipe
;
450 GLfloat verts
[4][3][4]; /* four verts, three attribs, XYZW */
452 /* setup vertex data */
454 const struct gl_framebuffer
*fb
= st
->ctx
->DrawBuffer
;
455 const GLfloat fb_width
= (GLfloat
) fb
->Width
;
456 const GLfloat fb_height
= (GLfloat
) fb
->Height
;
457 const GLfloat clip_x0
= x0
/ fb_width
* 2.0f
- 1.0f
;
458 const GLfloat clip_y0
= y0
/ fb_height
* 2.0f
- 1.0f
;
459 const GLfloat clip_x1
= x1
/ fb_width
* 2.0f
- 1.0f
;
460 const GLfloat clip_y1
= y1
/ fb_height
* 2.0f
- 1.0f
;
461 const GLfloat sLeft
= 0.0f
, sRight
= maxXcoord
;
462 const GLfloat tTop
= invertTex
? maxYcoord
: 0.0f
;
463 const GLfloat tBot
= invertTex
? 0.0f
: maxYcoord
;
467 verts
[0][0][0] = clip_x0
; /* v[0].attr[0].x */
468 verts
[0][0][1] = clip_y0
; /* v[0].attr[0].y */
471 verts
[1][0][0] = clip_x1
;
472 verts
[1][0][1] = clip_y0
;
475 verts
[2][0][0] = clip_x1
;
476 verts
[2][0][1] = clip_y1
;
479 verts
[3][0][0] = clip_x0
;
480 verts
[3][0][1] = clip_y1
;
483 verts
[0][tex
][0] = sLeft
; /* v[0].attr[tex].s */
484 verts
[0][tex
][1] = tTop
; /* v[0].attr[tex].t */
485 verts
[1][tex
][0] = sRight
;
486 verts
[1][tex
][1] = tTop
;
487 verts
[2][tex
][0] = sRight
;
488 verts
[2][tex
][1] = tBot
;
489 verts
[3][tex
][0] = sLeft
;
490 verts
[3][tex
][1] = tBot
;
492 /* same for all verts: */
494 for (i
= 0; i
< 4; i
++) {
495 verts
[i
][0][2] = z
; /*Z*/
496 verts
[i
][0][3] = 1.0f
; /*W*/
497 verts
[i
][1][0] = color
[0];
498 verts
[i
][1][1] = color
[1];
499 verts
[i
][1][2] = color
[2];
500 verts
[i
][1][3] = color
[3];
501 verts
[i
][2][2] = 0.0f
; /*R*/
502 verts
[i
][2][3] = 1.0f
; /*Q*/
506 for (i
= 0; i
< 4; i
++) {
507 verts
[i
][0][2] = z
; /*Z*/
508 verts
[i
][0][3] = 1.0f
; /*W*/
509 verts
[i
][1][2] = 0.0f
; /*R*/
510 verts
[i
][1][3] = 1.0f
; /*Q*/
516 struct pipe_buffer
*buf
;
518 /* allocate/load buffer object with vertex data */
519 buf
= pipe_buffer_create(pipe
->screen
, 32, PIPE_BUFFER_USAGE_VERTEX
,
521 st_no_flush_pipe_buffer_write(st
, buf
, 0, sizeof(verts
), verts
);
523 util_draw_vertex_buffer(pipe
, buf
, 0,
526 3); /* attribs/vert */
527 pipe_buffer_reference(&buf
, NULL
);
534 draw_textured_quad(GLcontext
*ctx
, GLint x
, GLint y
, GLfloat z
,
535 GLsizei width
, GLsizei height
,
536 GLfloat zoomX
, GLfloat zoomY
,
537 struct pipe_texture
*pt
,
538 struct st_vertex_program
*stvp
,
539 struct st_fragment_program
*stfp
,
540 const GLfloat
*color
,
543 struct st_context
*st
= st_context(ctx
);
544 struct pipe_context
*pipe
= st
->pipe
;
545 struct cso_context
*cso
= st
->cso_context
;
546 GLfloat x0
, y0
, x1
, y1
;
550 /* XXX if DrawPixels image is larger than max texture size, break
553 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
554 assert(width
<= maxSize
);
555 assert(height
<= maxSize
);
557 cso_save_rasterizer(cso
);
558 cso_save_viewport(cso
);
559 cso_save_samplers(cso
);
560 cso_save_sampler_textures(cso
);
561 cso_save_fragment_shader(cso
);
562 cso_save_vertex_shader(cso
);
564 /* rasterizer state: just scissor */
566 struct pipe_rasterizer_state rasterizer
;
567 memset(&rasterizer
, 0, sizeof(rasterizer
));
568 rasterizer
.gl_rasterization_rules
= 1;
569 rasterizer
.scissor
= ctx
->Scissor
.Enabled
;
570 cso_set_rasterizer(cso
, &rasterizer
);
573 /* fragment shader state: TEX lookup program */
574 cso_set_fragment_shader_handle(cso
, stfp
->driver_shader
);
576 /* vertex shader state: position + texcoord pass-through */
577 cso_set_vertex_shader_handle(cso
, stvp
->driver_shader
);
580 /* texture sampling state: */
582 struct pipe_sampler_state sampler
;
583 memset(&sampler
, 0, sizeof(sampler
));
584 sampler
.wrap_s
= PIPE_TEX_WRAP_CLAMP
;
585 sampler
.wrap_t
= PIPE_TEX_WRAP_CLAMP
;
586 sampler
.wrap_r
= PIPE_TEX_WRAP_CLAMP
;
587 sampler
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
588 sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
589 sampler
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
590 sampler
.normalized_coords
= 1;
592 cso_single_sampler(cso
, 0, &sampler
);
593 if (st
->pixel_xfer
.pixelmap_enabled
) {
594 cso_single_sampler(cso
, 1, &sampler
);
596 cso_single_sampler_done(cso
);
599 /* viewport state: viewport matching window dims */
601 const float width
= (float) ctx
->DrawBuffer
->Width
;
602 const float height
= (float) ctx
->DrawBuffer
->Height
;
603 struct pipe_viewport_state vp
;
604 vp
.scale
[0] = 0.5f
* width
;
605 vp
.scale
[1] = -0.5f
* height
;
608 vp
.translate
[0] = 0.5f
* width
;
609 vp
.translate
[1] = 0.5f
* height
;
610 vp
.translate
[2] = 0.0f
;
611 vp
.translate
[3] = 0.0f
;
612 cso_set_viewport(cso
, &vp
);
616 if (st
->pixel_xfer
.pixelmap_enabled
) {
617 struct pipe_texture
*textures
[2];
619 textures
[1] = st
->pixel_xfer
.pixelmap_texture
;
620 pipe
->set_sampler_textures(pipe
, 2, textures
);
623 pipe
->set_sampler_textures(pipe
, 1, &pt
);
626 /* Compute window coords (y=0=bottom) with pixel zoom.
627 * Recall that these coords are transformed by the current
628 * vertex shader and viewport transformation.
631 x1
= x
+ width
* ctx
->Pixel
.ZoomX
;
633 y1
= y
+ height
* ctx
->Pixel
.ZoomY
;
635 draw_quad(ctx
, x0
, y0
, z
, x1
, y1
, color
, invertTex
,
636 (GLfloat
) width
/ pt
->width
[0],
637 (GLfloat
) height
/ pt
->height
[0]);
640 cso_restore_rasterizer(cso
);
641 cso_restore_viewport(cso
);
642 cso_restore_samplers(cso
);
643 cso_restore_sampler_textures(cso
);
644 cso_restore_fragment_shader(cso
);
645 cso_restore_vertex_shader(cso
);
650 draw_stencil_pixels(GLcontext
*ctx
, GLint x
, GLint y
,
651 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
652 const struct gl_pixelstore_attrib
*unpack
,
653 const GLvoid
*pixels
)
655 struct st_context
*st
= st_context(ctx
);
656 struct pipe_context
*pipe
= st
->pipe
;
657 struct pipe_screen
*screen
= pipe
->screen
;
658 struct st_renderbuffer
*strb
;
659 enum pipe_transfer_usage usage
;
660 struct pipe_transfer
*pt
;
661 const GLboolean zoom
= ctx
->Pixel
.ZoomX
!= 1.0 || ctx
->Pixel
.ZoomY
!= 1.0;
665 strb
= st_renderbuffer(ctx
->DrawBuffer
->
666 Attachment
[BUFFER_STENCIL
].Renderbuffer
);
668 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
669 y
= ctx
->DrawBuffer
->Height
- y
- height
;
672 if(format
!= GL_DEPTH_STENCIL
&&
673 pf_get_component_bits( strb
->format
, PIPE_FORMAT_COMP_Z
) != 0)
674 usage
= PIPE_TRANSFER_READ_WRITE
;
676 usage
= PIPE_TRANSFER_WRITE
;
678 pt
= st_cond_flush_get_tex_transfer(st_context(ctx
), strb
->texture
, 0, 0, 0,
682 stmap
= screen
->transfer_map(screen
, pt
);
684 pixels
= _mesa_map_pbo_source(ctx
, unpack
, pixels
);
687 /* if width > MAX_WIDTH, have to process image in chunks */
689 while (skipPixels
< width
) {
690 const GLint spanX
= skipPixels
;
691 const GLint spanWidth
= MIN2(width
- skipPixels
, MAX_WIDTH
);
693 for (row
= 0; row
< height
; row
++) {
694 GLubyte sValues
[MAX_WIDTH
];
695 GLuint zValues
[MAX_WIDTH
];
696 GLenum destType
= GL_UNSIGNED_BYTE
;
697 const GLvoid
*source
= _mesa_image_address2d(unpack
, pixels
,
701 _mesa_unpack_stencil_span(ctx
, spanWidth
, destType
, sValues
,
702 type
, source
, unpack
,
703 ctx
->_ImageTransferState
);
705 if (format
== GL_DEPTH_STENCIL
) {
706 _mesa_unpack_depth_span(ctx
, spanWidth
, GL_UNSIGNED_INT
, zValues
,
707 (1 << 24) - 1, type
, source
, unpack
);
711 _mesa_problem(ctx
, "Gallium glDrawPixels(GL_STENCIL) with "
712 "zoom not complete");
718 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
719 spanY
= height
- row
- 1;
725 /* now pack the stencil (and Z) values in the dest format */
726 switch (pt
->format
) {
727 case PIPE_FORMAT_S8_UNORM
:
729 ubyte
*dest
= stmap
+ spanY
* pt
->stride
+ spanX
;
730 assert(usage
== PIPE_TRANSFER_WRITE
);
731 memcpy(dest
, sValues
, spanWidth
);
734 case PIPE_FORMAT_S8Z24_UNORM
:
735 if (format
== GL_DEPTH_STENCIL
) {
736 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
738 assert(usage
== PIPE_TRANSFER_WRITE
);
739 for (k
= 0; k
< spanWidth
; k
++) {
740 dest
[k
] = zValues
[k
] | (sValues
[k
] << 24);
744 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
746 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
747 for (k
= 0; k
< spanWidth
; k
++) {
748 dest
[k
] = (dest
[k
] & 0xffffff) | (sValues
[k
] << 24);
752 case PIPE_FORMAT_Z24S8_UNORM
:
753 if (format
== GL_DEPTH_STENCIL
) {
754 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
756 assert(usage
== PIPE_TRANSFER_WRITE
);
757 for (k
= 0; k
< spanWidth
; k
++) {
758 dest
[k
] = (zValues
[k
] << 8) | (sValues
[k
] & 0xff);
762 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
764 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
765 for (k
= 0; k
< spanWidth
; k
++) {
766 dest
[k
] = (dest
[k
] & 0xffffff00) | (sValues
[k
] & 0xff);
775 skipPixels
+= spanWidth
;
778 _mesa_unmap_pbo_source(ctx
, unpack
);
780 /* unmap the stencil buffer */
781 screen
->transfer_unmap(screen
, pt
);
782 screen
->tex_transfer_destroy(pt
);
787 * Called via ctx->Driver.DrawPixels()
790 st_DrawPixels(GLcontext
*ctx
, GLint x
, GLint y
, GLsizei width
, GLsizei height
,
791 GLenum format
, GLenum type
,
792 const struct gl_pixelstore_attrib
*unpack
, const GLvoid
*pixels
)
794 struct st_fragment_program
*stfp
;
795 struct st_vertex_program
*stvp
;
796 struct st_context
*st
= st_context(ctx
);
797 struct pipe_surface
*ps
;
798 const GLfloat
*color
;
800 if (format
== GL_STENCIL_INDEX
||
801 format
== GL_DEPTH_STENCIL
) {
802 draw_stencil_pixels(ctx
, x
, y
, width
, height
, format
, type
,
807 /* Mesa state should be up to date by now */
808 assert(ctx
->NewState
== 0x0);
810 st_validate_state(st
);
812 if (format
== GL_DEPTH_COMPONENT
) {
813 ps
= st
->state
.framebuffer
.zsbuf
;
814 stfp
= make_fragment_shader_z(st
);
815 stvp
= st_make_passthrough_vertex_shader(st
, GL_TRUE
);
816 color
= ctx
->Current
.RasterColor
;
819 ps
= st
->state
.framebuffer
.cbufs
[0];
820 stfp
= combined_drawpix_fragment_program(ctx
);
821 stvp
= st_make_passthrough_vertex_shader(st
, GL_FALSE
);
825 /* draw with textured quad */
827 struct pipe_texture
*pt
828 = make_texture(st
, width
, height
, format
, type
, unpack
, pixels
);
830 draw_textured_quad(ctx
, x
, y
, ctx
->Current
.RasterPos
[2],
831 width
, height
, ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
832 pt
, stvp
, stfp
, color
, GL_FALSE
);
833 pipe_texture_reference(&pt
, NULL
);
841 copy_stencil_pixels(GLcontext
*ctx
, GLint srcx
, GLint srcy
,
842 GLsizei width
, GLsizei height
,
843 GLint dstx
, GLint dsty
)
845 struct st_renderbuffer
*rbDraw
= st_renderbuffer(ctx
->DrawBuffer
->_StencilBuffer
);
846 struct pipe_screen
*screen
= ctx
->st
->pipe
->screen
;
847 enum pipe_transfer_usage usage
;
848 struct pipe_transfer
*ptDraw
;
853 buffer
= _mesa_malloc(width
* height
* sizeof(ubyte
));
855 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCopyPixels(stencil)");
859 /* this will do stencil pixel transfer ops */
860 st_read_stencil_pixels(ctx
, srcx
, srcy
, width
, height
,
861 GL_STENCIL_INDEX
, GL_UNSIGNED_BYTE
,
862 &ctx
->DefaultPacking
, buffer
);
864 if(pf_get_component_bits( rbDraw
->format
, PIPE_FORMAT_COMP_Z
) != 0)
865 usage
= PIPE_TRANSFER_READ_WRITE
;
867 usage
= PIPE_TRANSFER_WRITE
;
869 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
870 dsty
= rbDraw
->Base
.Height
- dsty
- height
;
873 ptDraw
= st_cond_flush_get_tex_transfer(st_context(ctx
),
874 rbDraw
->texture
, 0, 0, 0,
878 assert(ptDraw
->block
.width
== 1);
879 assert(ptDraw
->block
.height
== 1);
881 /* map the stencil buffer */
882 drawMap
= screen
->transfer_map(screen
, ptDraw
);
885 /* XXX PixelZoom not handled yet */
886 for (i
= 0; i
< height
; i
++) {
893 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
897 dst
= drawMap
+ y
* ptDraw
->stride
;
898 src
= buffer
+ i
* width
;
900 switch (ptDraw
->format
) {
901 case PIPE_FORMAT_S8Z24_UNORM
:
903 uint
*dst4
= (uint
*) dst
;
905 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
906 for (j
= 0; j
< width
; j
++) {
907 *dst4
= (*dst4
& 0xffffff) | (src
[j
] << 24);
912 case PIPE_FORMAT_Z24S8_UNORM
:
914 uint
*dst4
= (uint
*) dst
;
916 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
917 for (j
= 0; j
< width
; j
++) {
918 *dst4
= (*dst4
& 0xffffff00) | (src
[j
] & 0xff);
923 case PIPE_FORMAT_S8_UNORM
:
924 assert(usage
== PIPE_TRANSFER_WRITE
);
925 memcpy(dst
, src
, width
);
934 /* unmap the stencil buffer */
935 screen
->transfer_unmap(screen
, ptDraw
);
936 screen
->tex_transfer_destroy(ptDraw
);
941 st_CopyPixels(GLcontext
*ctx
, GLint srcx
, GLint srcy
,
942 GLsizei width
, GLsizei height
,
943 GLint dstx
, GLint dsty
, GLenum type
)
945 struct st_context
*st
= st_context(ctx
);
946 struct pipe_context
*pipe
= st
->pipe
;
947 struct pipe_screen
*screen
= pipe
->screen
;
948 struct st_renderbuffer
*rbRead
;
949 struct st_vertex_program
*stvp
;
950 struct st_fragment_program
*stfp
;
951 struct pipe_texture
*pt
;
953 enum pipe_format srcFormat
, texFormat
;
956 pipe
->flush(pipe
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
958 st_validate_state(st
);
984 if (width
< 0 || height
< 0)
988 if (type
== GL_STENCIL
) {
989 /* can't use texturing to do stencil */
990 copy_stencil_pixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
);
994 if (type
== GL_COLOR
) {
995 rbRead
= st_get_color_read_renderbuffer(ctx
);
997 stfp
= combined_drawpix_fragment_program(ctx
);
998 stvp
= st_make_passthrough_vertex_shader(st
, GL_FALSE
);
1001 assert(type
== GL_DEPTH
);
1002 rbRead
= st_renderbuffer(ctx
->ReadBuffer
->_DepthBuffer
);
1003 color
= ctx
->Current
.Attrib
[VERT_ATTRIB_COLOR0
];
1004 stfp
= make_fragment_shader_z(st
);
1005 stvp
= st_make_passthrough_vertex_shader(st
, GL_TRUE
);
1008 srcFormat
= rbRead
->texture
->format
;
1010 if (screen
->is_format_supported(screen
, srcFormat
, PIPE_TEXTURE_2D
,
1011 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
1012 texFormat
= srcFormat
;
1015 /* srcFormat can't be used as a texture format */
1016 if (type
== GL_DEPTH
) {
1017 texFormat
= st_choose_format(pipe
, GL_DEPTH_COMPONENT
, PIPE_TEXTURE_2D
,
1018 PIPE_TEXTURE_USAGE_DEPTH_STENCIL
);
1019 assert(texFormat
!= PIPE_FORMAT_NONE
); /* XXX no depth texture formats??? */
1022 /* default color format */
1023 texFormat
= st_choose_format(pipe
, GL_RGBA
, PIPE_TEXTURE_2D
,
1024 PIPE_TEXTURE_USAGE_SAMPLER
);
1025 assert(texFormat
!= PIPE_FORMAT_NONE
);
1029 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
1030 srcy
= ctx
->DrawBuffer
->Height
- srcy
- height
;
1041 /* Need to use POT texture? */
1044 if (!screen
->get_param(screen
, PIPE_CAP_NPOT_TEXTURES
)) {
1047 l2pt
= util_logbase2(width
);
1048 if (1<<l2pt
!= width
) {
1051 l2pt
= util_logbase2(height
);
1052 if (1<<l2pt
!= height
) {
1056 /* Check against maximum texture size */
1057 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
1058 assert(ptw
<= maxSize
);
1059 assert(pth
<= maxSize
);
1062 pt
= st_texture_create(st
, PIPE_TEXTURE_2D
, texFormat
, 0,
1064 PIPE_TEXTURE_USAGE_SAMPLER
);
1069 if (srcFormat
== texFormat
) {
1070 /* copy source framebuffer surface into mipmap/texture */
1071 struct pipe_surface
*psRead
= screen
->get_tex_surface(screen
,
1072 rbRead
->texture
, 0, 0, 0,
1073 PIPE_BUFFER_USAGE_GPU_READ
);
1074 struct pipe_surface
*psTex
= screen
->get_tex_surface(screen
, pt
, 0, 0, 0,
1075 PIPE_BUFFER_USAGE_GPU_WRITE
);
1076 pipe
->surface_copy(pipe
,
1080 srcx
, srcy
, width
, height
);
1081 pipe_surface_reference(&psRead
, NULL
);
1082 pipe_surface_reference(&psTex
, NULL
);
1085 /* CPU-based fallback/conversion */
1086 struct pipe_transfer
*ptRead
=
1087 st_cond_flush_get_tex_transfer(st
, rbRead
->texture
, 0, 0, 0,
1088 PIPE_TRANSFER_READ
, srcx
, srcy
, width
,
1090 struct pipe_transfer
*ptTex
;
1091 enum pipe_transfer_usage transfer_usage
;
1093 if (type
== GL_DEPTH
&& pf_is_depth_and_stencil(pt
->format
))
1094 transfer_usage
= PIPE_TRANSFER_READ_WRITE
;
1096 transfer_usage
= PIPE_TRANSFER_WRITE
;
1098 ptTex
= st_cond_flush_get_tex_transfer(st
, pt
, 0, 0, 0, transfer_usage
,
1099 0, 0, width
, height
);
1101 if (type
== GL_COLOR
) {
1102 /* alternate path using get/put_tile() */
1103 GLfloat
*buf
= (GLfloat
*) _mesa_malloc(width
* height
* 4 * sizeof(GLfloat
));
1105 pipe_get_tile_rgba(ptRead
, 0, 0, width
, height
, buf
);
1106 pipe_put_tile_rgba(ptTex
, 0, 0, width
, height
, buf
);
1112 GLuint
*buf
= (GLuint
*) _mesa_malloc(width
* height
* sizeof(GLuint
));
1113 pipe_get_tile_z(ptRead
, 0, 0, width
, height
, buf
);
1114 pipe_put_tile_z(ptTex
, 0, 0, width
, height
, buf
);
1118 screen
->tex_transfer_destroy(ptRead
);
1119 screen
->tex_transfer_destroy(ptTex
);
1122 /* draw textured quad */
1123 draw_textured_quad(ctx
, dstx
, dsty
, ctx
->Current
.RasterPos
[2],
1124 width
, height
, ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
1125 pt
, stvp
, stfp
, color
, GL_TRUE
);
1127 pipe_texture_reference(&pt
, NULL
);
1132 void st_init_drawpixels_functions(struct dd_function_table
*functions
)
1134 functions
->DrawPixels
= st_DrawPixels
;
1135 functions
->CopyPixels
= st_CopyPixels
;
1140 st_destroy_drawpix(struct st_context
*st
)
1142 st_reference_fragprog(st
, &st
->drawpix
.z_shader
, NULL
);
1143 st_reference_fragprog(st
, &st
->pixel_xfer
.combined_prog
, NULL
);
1144 st_reference_vertprog(st
, &st
->drawpix
.vert_shaders
[0], NULL
);
1145 st_reference_vertprog(st
, &st
->drawpix
.vert_shaders
[1], NULL
);