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"
44 #include "st_context.h"
46 #include "st_atom_constbuf.h"
48 #include "st_program.h"
49 #include "st_cb_drawpixels.h"
50 #include "st_cb_readpixels.h"
51 #include "st_cb_fbo.h"
52 #include "st_cb_texture.h"
54 #include "st_format.h"
55 #include "st_mesa_to_tgsi.h"
56 #include "st_texture.h"
57 #include "st_inlines.h"
59 #include "pipe/p_context.h"
60 #include "pipe/p_defines.h"
61 #include "pipe/p_inlines.h"
62 #include "util/u_tile.h"
63 #include "util/u_draw_quad.h"
64 #include "util/u_math.h"
65 #include "shader/prog_instruction.h"
66 #include "cso_cache/cso_context.h"
70 * Check if the given program is:
71 * 0: MOVE result.color, fragment.color;
75 is_passthrough_program(const struct gl_fragment_program
*prog
)
77 if (prog
->Base
.NumInstructions
== 2) {
78 const struct prog_instruction
*inst
= prog
->Base
.Instructions
;
79 if (inst
[0].Opcode
== OPCODE_MOV
&&
80 inst
[1].Opcode
== OPCODE_END
&&
81 inst
[0].DstReg
.File
== PROGRAM_OUTPUT
&&
82 inst
[0].DstReg
.Index
== FRAG_RESULT_COLOR
&&
83 inst
[0].DstReg
.WriteMask
== WRITEMASK_XYZW
&&
84 inst
[0].SrcReg
[0].File
== PROGRAM_INPUT
&&
85 inst
[0].SrcReg
[0].Index
== FRAG_ATTRIB_COL0
&&
86 inst
[0].SrcReg
[0].Swizzle
== SWIZZLE_XYZW
) {
96 * Make fragment shader for glDraw/CopyPixels. This shader is made
97 * by combining the pixel transfer shader with the user-defined shader.
99 static struct st_fragment_program
*
100 combined_drawpix_fragment_program(GLcontext
*ctx
)
102 struct st_context
*st
= st_context(ctx
);
103 struct st_fragment_program
*stfp
;
105 if (st
->pixel_xfer
.program
->serialNo
== st
->pixel_xfer
.xfer_prog_sn
106 && st
->fp
->serialNo
== st
->pixel_xfer
.user_prog_sn
) {
107 /* the pixel tranfer program has not changed and the user-defined
108 * program has not changed, so re-use the combined program.
110 stfp
= st
->pixel_xfer
.combined_prog
;
113 /* Concatenate the pixel transfer program with the current user-
116 if (is_passthrough_program(&st
->fp
->Base
)) {
117 stfp
= (struct st_fragment_program
*)
118 _mesa_clone_program(ctx
, &st
->pixel_xfer
.program
->Base
.Base
);
122 printf("Base program:\n");
123 _mesa_print_program(&st
->fp
->Base
.Base
);
124 printf("DrawPix program:\n");
125 _mesa_print_program(&st
->pixel_xfer
.program
->Base
.Base
);
127 stfp
= (struct st_fragment_program
*)
128 _mesa_combine_programs(ctx
,
129 &st
->pixel_xfer
.program
->Base
.Base
,
135 struct gl_program
*p
= &stfp
->Base
.Base
;
136 printf("Combined DrawPixels program:\n");
137 _mesa_print_program(p
);
138 printf("InputsRead: 0x%x\n", p
->InputsRead
);
139 printf("OutputsWritten: 0x%x\n", p
->OutputsWritten
);
140 _mesa_print_parameter_list(p
->Parameters
);
144 /* translate to TGSI tokens */
145 st_translate_fragment_program(st
, stfp
, NULL
);
147 /* save new program, update serial numbers */
148 st
->pixel_xfer
.xfer_prog_sn
= st
->pixel_xfer
.program
->serialNo
;
149 st
->pixel_xfer
.user_prog_sn
= st
->fp
->serialNo
;
150 st
->pixel_xfer
.combined_prog_sn
= stfp
->serialNo
;
151 /* can't reference new program directly, already have a reference on it */
152 st_reference_fragprog(st
, &st
->pixel_xfer
.combined_prog
, NULL
);
153 st
->pixel_xfer
.combined_prog
= stfp
;
156 /* Ideally we'd have updated the pipe constants during the normal
157 * st/atom mechanism. But we can't since this is specific to glDrawPixels.
159 st_upload_constants(st
, stfp
->Base
.Base
.Parameters
, PIPE_SHADER_FRAGMENT
);
166 * Create fragment shader that does a TEX() instruction to get a Z
167 * value, then writes to FRAG_RESULT_DEPTH.
168 * Pass fragment color through as-is.
170 static struct st_fragment_program
*
171 make_fragment_shader_z(struct st_context
*st
)
173 GLcontext
*ctx
= st
->ctx
;
174 struct gl_program
*p
;
177 if (st
->drawpix
.z_shader
) {
178 return st
->drawpix
.z_shader
;
184 p
= ctx
->Driver
.NewProgram(ctx
, GL_FRAGMENT_PROGRAM_ARB
, 0);
188 p
->NumInstructions
= 3;
190 p
->Instructions
= _mesa_alloc_instructions(p
->NumInstructions
);
191 if (!p
->Instructions
) {
192 ctx
->Driver
.DeleteProgram(ctx
, p
);
195 _mesa_init_instructions(p
->Instructions
, p
->NumInstructions
);
197 /* TEX result.depth, fragment.texcoord[0], texture[0], 2D; */
198 p
->Instructions
[ic
].Opcode
= OPCODE_TEX
;
199 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
200 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_DEPTH
;
201 p
->Instructions
[ic
].DstReg
.WriteMask
= WRITEMASK_Z
;
202 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
203 p
->Instructions
[ic
].SrcReg
[0].Index
= FRAG_ATTRIB_TEX0
;
204 p
->Instructions
[ic
].TexSrcUnit
= 0;
205 p
->Instructions
[ic
].TexSrcTarget
= TEXTURE_2D_INDEX
;
208 /* MOV result.color, fragment.color */
209 p
->Instructions
[ic
].Opcode
= OPCODE_MOV
;
210 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
211 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_COLOR
;
212 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
213 p
->Instructions
[ic
].SrcReg
[0].Index
= FRAG_ATTRIB_COL0
;
217 p
->Instructions
[ic
++].Opcode
= OPCODE_END
;
219 assert(ic
== p
->NumInstructions
);
221 p
->InputsRead
= FRAG_BIT_TEX0
| FRAG_BIT_COL0
;
222 p
->OutputsWritten
= (1 << FRAG_RESULT_COLOR
) | (1 << FRAG_RESULT_DEPTH
);
223 p
->SamplersUsed
= 0x1; /* sampler 0 (bit 0) is used */
225 st
->drawpix
.z_shader
= (struct st_fragment_program
*) p
;
226 st_translate_fragment_program(st
, st
->drawpix
.z_shader
, NULL
);
228 return st
->drawpix
.z_shader
;
234 * Create a simple vertex shader that just passes through the
235 * vertex position and texcoord (and optionally, color).
237 static struct st_vertex_program
*
238 st_make_passthrough_vertex_shader(struct st_context
*st
, GLboolean passColor
)
240 GLcontext
*ctx
= st
->ctx
;
241 struct st_vertex_program
*stvp
;
242 struct gl_program
*p
;
245 if (st
->drawpix
.vert_shaders
[passColor
])
246 return st
->drawpix
.vert_shaders
[passColor
];
251 p
= ctx
->Driver
.NewProgram(ctx
, GL_VERTEX_PROGRAM_ARB
, 0);
256 p
->NumInstructions
= 4;
258 p
->NumInstructions
= 3;
260 p
->Instructions
= _mesa_alloc_instructions(p
->NumInstructions
);
261 if (!p
->Instructions
) {
262 ctx
->Driver
.DeleteProgram(ctx
, p
);
265 _mesa_init_instructions(p
->Instructions
, p
->NumInstructions
);
266 /* MOV result.pos, vertex.pos; */
267 p
->Instructions
[0].Opcode
= OPCODE_MOV
;
268 p
->Instructions
[0].DstReg
.File
= PROGRAM_OUTPUT
;
269 p
->Instructions
[0].DstReg
.Index
= VERT_RESULT_HPOS
;
270 p
->Instructions
[0].SrcReg
[0].File
= PROGRAM_INPUT
;
271 p
->Instructions
[0].SrcReg
[0].Index
= VERT_ATTRIB_POS
;
272 /* MOV result.texcoord0, vertex.texcoord0; */
273 p
->Instructions
[1].Opcode
= OPCODE_MOV
;
274 p
->Instructions
[1].DstReg
.File
= PROGRAM_OUTPUT
;
275 p
->Instructions
[1].DstReg
.Index
= VERT_RESULT_TEX0
;
276 p
->Instructions
[1].SrcReg
[0].File
= PROGRAM_INPUT
;
277 p
->Instructions
[1].SrcReg
[0].Index
= VERT_ATTRIB_TEX0
;
280 /* MOV result.color0, vertex.color0; */
281 p
->Instructions
[ic
].Opcode
= OPCODE_MOV
;
282 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
283 p
->Instructions
[ic
].DstReg
.Index
= VERT_RESULT_COL0
;
284 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
285 p
->Instructions
[ic
].SrcReg
[0].Index
= VERT_ATTRIB_COLOR0
;
290 p
->Instructions
[ic
].Opcode
= OPCODE_END
;
293 assert(ic
== p
->NumInstructions
);
295 p
->InputsRead
= VERT_BIT_POS
| VERT_BIT_TEX0
;
296 p
->OutputsWritten
= ((1 << VERT_RESULT_TEX0
) |
297 (1 << VERT_RESULT_HPOS
));
299 p
->InputsRead
|= VERT_BIT_COLOR0
;
300 p
->OutputsWritten
|= (1 << VERT_RESULT_COL0
);
303 stvp
= (struct st_vertex_program
*) p
;
304 st_translate_vertex_program(st
, stvp
, NULL
, NULL
, NULL
);
306 st
->drawpix
.vert_shaders
[passColor
] = stvp
;
313 _mesa_base_format(GLenum format
)
316 case GL_DEPTH_COMPONENT
:
317 return GL_DEPTH_COMPONENT
;
318 case GL_DEPTH_STENCIL
:
319 return GL_DEPTH_STENCIL
;
320 case GL_STENCIL_INDEX
:
321 return GL_STENCIL_INDEX
;
329 * Make texture containing an image for glDrawPixels image.
330 * If 'pixels' is NULL, leave the texture image data undefined.
332 static struct pipe_texture
*
333 make_texture(struct st_context
*st
,
334 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
335 const struct gl_pixelstore_attrib
*unpack
,
336 const GLvoid
*pixels
)
338 GLcontext
*ctx
= st
->ctx
;
339 struct pipe_context
*pipe
= st
->pipe
;
340 struct pipe_screen
*screen
= pipe
->screen
;
341 const struct gl_texture_format
*mformat
;
342 struct pipe_texture
*pt
;
343 enum pipe_format pipeFormat
;
348 baseFormat
= _mesa_base_format(format
);
350 mformat
= st_ChooseTextureFormat(ctx
, baseFormat
, format
, type
);
353 pipeFormat
= st_mesa_format_to_pipe_format(mformat
->MesaFormat
);
355 cpp
= st_sizeof_format(pipeFormat
);
357 pixels
= _mesa_map_pbo_source(ctx
, unpack
, pixels
);
361 /* Need to use POT texture? */
364 if (!screen
->get_param(screen
, PIPE_CAP_NPOT_TEXTURES
)) {
367 l2pt
= util_logbase2(width
);
368 if (1<<l2pt
!= width
) {
371 l2pt
= util_logbase2(height
);
372 if (1<<l2pt
!= height
) {
376 /* Check against maximum texture size */
377 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
378 assert(ptw
<= maxSize
);
379 assert(pth
<= maxSize
);
382 pt
= st_texture_create(st
, PIPE_TEXTURE_2D
, pipeFormat
, 0, ptw
, pth
, 1,
383 PIPE_TEXTURE_USAGE_SAMPLER
);
385 _mesa_unmap_pbo_source(ctx
, unpack
);
390 struct pipe_transfer
*transfer
;
391 static const GLuint dstImageOffsets
= 0;
394 const GLbitfield imageTransferStateSave
= ctx
->_ImageTransferState
;
396 /* we'll do pixel transfer in a fragment shader */
397 ctx
->_ImageTransferState
= 0x0;
399 transfer
= st_no_flush_get_tex_transfer(st
, pt
, 0, 0, 0,
400 PIPE_TRANSFER_WRITE
, 0, 0,
403 /* map texture transfer */
404 dest
= screen
->transfer_map(screen
, transfer
);
406 /* Put image into texture transfer.
407 * Note that the image is actually going to be upside down in
408 * the texture. We deal with that with texcoords.
410 success
= mformat
->StoreImage(ctx
, 2, /* dims */
411 baseFormat
, /* baseInternalFormat */
412 mformat
, /* gl_texture_format */
414 0, 0, 0, /* dstX/Y/Zoffset */
415 transfer
->stride
, /* dstRowStride, bytes */
416 &dstImageOffsets
, /* dstImageOffsets */
417 width
, height
, 1, /* size */
418 format
, type
, /* src format/type */
419 pixels
, /* data source */
423 screen
->transfer_unmap(screen
, transfer
);
424 screen
->tex_transfer_destroy(transfer
);
429 ctx
->_ImageTransferState
= imageTransferStateSave
;
432 _mesa_unmap_pbo_source(ctx
, unpack
);
439 * Draw quad with texcoords and optional color.
440 * Coords are window coords with y=0=bottom.
441 * \param color may be null
442 * \param invertTex if true, flip texcoords vertically
445 draw_quad(GLcontext
*ctx
, GLfloat x0
, GLfloat y0
, GLfloat z
,
446 GLfloat x1
, GLfloat y1
, const GLfloat
*color
,
447 GLboolean invertTex
, GLfloat maxXcoord
, GLfloat maxYcoord
)
449 struct st_context
*st
= st_context(ctx
);
450 struct pipe_context
*pipe
= st
->pipe
;
451 GLfloat verts
[4][3][4]; /* four verts, three attribs, XYZW */
453 /* setup vertex data */
455 const struct gl_framebuffer
*fb
= st
->ctx
->DrawBuffer
;
456 const GLfloat fb_width
= (GLfloat
) fb
->Width
;
457 const GLfloat fb_height
= (GLfloat
) fb
->Height
;
458 const GLfloat clip_x0
= x0
/ fb_width
* 2.0f
- 1.0f
;
459 const GLfloat clip_y0
= y0
/ fb_height
* 2.0f
- 1.0f
;
460 const GLfloat clip_x1
= x1
/ fb_width
* 2.0f
- 1.0f
;
461 const GLfloat clip_y1
= y1
/ fb_height
* 2.0f
- 1.0f
;
462 const GLfloat sLeft
= 0.0f
, sRight
= maxXcoord
;
463 const GLfloat tTop
= invertTex
? maxYcoord
: 0.0f
;
464 const GLfloat tBot
= invertTex
? 0.0f
: maxYcoord
;
468 verts
[0][0][0] = clip_x0
; /* v[0].attr[0].x */
469 verts
[0][0][1] = clip_y0
; /* v[0].attr[0].y */
472 verts
[1][0][0] = clip_x1
;
473 verts
[1][0][1] = clip_y0
;
476 verts
[2][0][0] = clip_x1
;
477 verts
[2][0][1] = clip_y1
;
480 verts
[3][0][0] = clip_x0
;
481 verts
[3][0][1] = clip_y1
;
484 verts
[0][tex
][0] = sLeft
; /* v[0].attr[tex].s */
485 verts
[0][tex
][1] = tTop
; /* v[0].attr[tex].t */
486 verts
[1][tex
][0] = sRight
;
487 verts
[1][tex
][1] = tTop
;
488 verts
[2][tex
][0] = sRight
;
489 verts
[2][tex
][1] = tBot
;
490 verts
[3][tex
][0] = sLeft
;
491 verts
[3][tex
][1] = tBot
;
493 /* same for all verts: */
495 for (i
= 0; i
< 4; i
++) {
496 verts
[i
][0][2] = z
; /*Z*/
497 verts
[i
][0][3] = 1.0f
; /*W*/
498 verts
[i
][1][0] = color
[0];
499 verts
[i
][1][1] = color
[1];
500 verts
[i
][1][2] = color
[2];
501 verts
[i
][1][3] = color
[3];
502 verts
[i
][2][2] = 0.0f
; /*R*/
503 verts
[i
][2][3] = 1.0f
; /*Q*/
507 for (i
= 0; i
< 4; i
++) {
508 verts
[i
][0][2] = z
; /*Z*/
509 verts
[i
][0][3] = 1.0f
; /*W*/
510 verts
[i
][1][2] = 0.0f
; /*R*/
511 verts
[i
][1][3] = 1.0f
; /*Q*/
517 struct pipe_buffer
*buf
;
519 /* allocate/load buffer object with vertex data */
520 buf
= pipe_buffer_create(pipe
->screen
, 32, PIPE_BUFFER_USAGE_VERTEX
,
522 st_no_flush_pipe_buffer_write(st
, buf
, 0, sizeof(verts
), verts
);
524 util_draw_vertex_buffer(pipe
, buf
, 0,
527 3); /* attribs/vert */
528 pipe_buffer_reference(&buf
, NULL
);
535 draw_textured_quad(GLcontext
*ctx
, GLint x
, GLint y
, GLfloat z
,
536 GLsizei width
, GLsizei height
,
537 GLfloat zoomX
, GLfloat zoomY
,
538 struct pipe_texture
*pt
,
539 struct st_vertex_program
*stvp
,
540 struct st_fragment_program
*stfp
,
541 const GLfloat
*color
,
544 struct st_context
*st
= st_context(ctx
);
545 struct pipe_context
*pipe
= st
->pipe
;
546 struct cso_context
*cso
= st
->cso_context
;
547 GLfloat x0
, y0
, x1
, y1
;
551 /* XXX if DrawPixels image is larger than max texture size, break
554 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
555 assert(width
<= maxSize
);
556 assert(height
<= maxSize
);
558 cso_save_rasterizer(cso
);
559 cso_save_viewport(cso
);
560 cso_save_samplers(cso
);
561 cso_save_sampler_textures(cso
);
562 cso_save_fragment_shader(cso
);
563 cso_save_vertex_shader(cso
);
565 /* rasterizer state: just scissor */
567 struct pipe_rasterizer_state rasterizer
;
568 memset(&rasterizer
, 0, sizeof(rasterizer
));
569 rasterizer
.gl_rasterization_rules
= 1;
570 rasterizer
.scissor
= ctx
->Scissor
.Enabled
;
571 cso_set_rasterizer(cso
, &rasterizer
);
574 /* fragment shader state: TEX lookup program */
575 cso_set_fragment_shader_handle(cso
, stfp
->driver_shader
);
577 /* vertex shader state: position + texcoord pass-through */
578 cso_set_vertex_shader_handle(cso
, stvp
->driver_shader
);
581 /* texture sampling state: */
583 struct pipe_sampler_state sampler
;
584 memset(&sampler
, 0, sizeof(sampler
));
585 sampler
.wrap_s
= PIPE_TEX_WRAP_CLAMP
;
586 sampler
.wrap_t
= PIPE_TEX_WRAP_CLAMP
;
587 sampler
.wrap_r
= PIPE_TEX_WRAP_CLAMP
;
588 sampler
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
589 sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
590 sampler
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
591 sampler
.normalized_coords
= 1;
593 cso_single_sampler(cso
, 0, &sampler
);
594 if (st
->pixel_xfer
.pixelmap_enabled
) {
595 cso_single_sampler(cso
, 1, &sampler
);
597 cso_single_sampler_done(cso
);
600 /* viewport state: viewport matching window dims */
602 const float w
= (float) ctx
->DrawBuffer
->Width
;
603 const float h
= (float) ctx
->DrawBuffer
->Height
;
604 struct pipe_viewport_state vp
;
605 vp
.scale
[0] = 0.5f
* w
;
606 vp
.scale
[1] = -0.5f
* h
;
609 vp
.translate
[0] = 0.5f
* w
;
610 vp
.translate
[1] = 0.5f
* h
;
611 vp
.translate
[2] = 0.0f
;
612 vp
.translate
[3] = 0.0f
;
613 cso_set_viewport(cso
, &vp
);
617 if (st
->pixel_xfer
.pixelmap_enabled
) {
618 struct pipe_texture
*textures
[2];
620 textures
[1] = st
->pixel_xfer
.pixelmap_texture
;
621 pipe
->set_sampler_textures(pipe
, 2, textures
);
624 pipe
->set_sampler_textures(pipe
, 1, &pt
);
627 /* Compute window coords (y=0=bottom) with pixel zoom.
628 * Recall that these coords are transformed by the current
629 * vertex shader and viewport transformation.
632 x1
= x
+ width
* ctx
->Pixel
.ZoomX
;
634 y1
= y
+ height
* ctx
->Pixel
.ZoomY
;
636 draw_quad(ctx
, x0
, y0
, z
, x1
, y1
, color
, invertTex
,
637 (GLfloat
) width
/ pt
->width
[0],
638 (GLfloat
) height
/ pt
->height
[0]);
641 cso_restore_rasterizer(cso
);
642 cso_restore_viewport(cso
);
643 cso_restore_samplers(cso
);
644 cso_restore_sampler_textures(cso
);
645 cso_restore_fragment_shader(cso
);
646 cso_restore_vertex_shader(cso
);
651 draw_stencil_pixels(GLcontext
*ctx
, GLint x
, GLint y
,
652 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
653 const struct gl_pixelstore_attrib
*unpack
,
654 const GLvoid
*pixels
)
656 struct st_context
*st
= st_context(ctx
);
657 struct pipe_context
*pipe
= st
->pipe
;
658 struct pipe_screen
*screen
= pipe
->screen
;
659 struct st_renderbuffer
*strb
;
660 enum pipe_transfer_usage usage
;
661 struct pipe_transfer
*pt
;
662 const GLboolean zoom
= ctx
->Pixel
.ZoomX
!= 1.0 || ctx
->Pixel
.ZoomY
!= 1.0;
666 strb
= st_renderbuffer(ctx
->DrawBuffer
->
667 Attachment
[BUFFER_STENCIL
].Renderbuffer
);
669 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
670 y
= ctx
->DrawBuffer
->Height
- y
- height
;
673 if(format
!= GL_DEPTH_STENCIL
&&
674 pf_get_component_bits( strb
->format
, PIPE_FORMAT_COMP_Z
) != 0)
675 usage
= PIPE_TRANSFER_READ_WRITE
;
677 usage
= PIPE_TRANSFER_WRITE
;
679 pt
= st_cond_flush_get_tex_transfer(st_context(ctx
), strb
->texture
, 0, 0, 0,
683 stmap
= screen
->transfer_map(screen
, pt
);
685 pixels
= _mesa_map_pbo_source(ctx
, unpack
, pixels
);
688 /* if width > MAX_WIDTH, have to process image in chunks */
690 while (skipPixels
< width
) {
691 const GLint spanX
= skipPixels
;
692 const GLint spanWidth
= MIN2(width
- skipPixels
, MAX_WIDTH
);
694 for (row
= 0; row
< height
; row
++) {
695 GLubyte sValues
[MAX_WIDTH
];
696 GLuint zValues
[MAX_WIDTH
];
697 GLenum destType
= GL_UNSIGNED_BYTE
;
698 const GLvoid
*source
= _mesa_image_address2d(unpack
, pixels
,
702 _mesa_unpack_stencil_span(ctx
, spanWidth
, destType
, sValues
,
703 type
, source
, unpack
,
704 ctx
->_ImageTransferState
);
706 if (format
== GL_DEPTH_STENCIL
) {
707 _mesa_unpack_depth_span(ctx
, spanWidth
, GL_UNSIGNED_INT
, zValues
,
708 (1 << 24) - 1, type
, source
, unpack
);
712 _mesa_problem(ctx
, "Gallium glDrawPixels(GL_STENCIL) with "
713 "zoom not complete");
719 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
720 spanY
= height
- row
- 1;
726 /* now pack the stencil (and Z) values in the dest format */
727 switch (pt
->format
) {
728 case PIPE_FORMAT_S8_UNORM
:
730 ubyte
*dest
= stmap
+ spanY
* pt
->stride
+ spanX
;
731 assert(usage
== PIPE_TRANSFER_WRITE
);
732 memcpy(dest
, sValues
, spanWidth
);
735 case PIPE_FORMAT_S8Z24_UNORM
:
736 if (format
== GL_DEPTH_STENCIL
) {
737 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
739 assert(usage
== PIPE_TRANSFER_WRITE
);
740 for (k
= 0; k
< spanWidth
; k
++) {
741 dest
[k
] = zValues
[k
] | (sValues
[k
] << 24);
745 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
747 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
748 for (k
= 0; k
< spanWidth
; k
++) {
749 dest
[k
] = (dest
[k
] & 0xffffff) | (sValues
[k
] << 24);
753 case PIPE_FORMAT_Z24S8_UNORM
:
754 if (format
== GL_DEPTH_STENCIL
) {
755 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
757 assert(usage
== PIPE_TRANSFER_WRITE
);
758 for (k
= 0; k
< spanWidth
; k
++) {
759 dest
[k
] = (zValues
[k
] << 8) | (sValues
[k
] & 0xff);
763 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
765 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
766 for (k
= 0; k
< spanWidth
; k
++) {
767 dest
[k
] = (dest
[k
] & 0xffffff00) | (sValues
[k
] & 0xff);
776 skipPixels
+= spanWidth
;
779 _mesa_unmap_pbo_source(ctx
, unpack
);
781 /* unmap the stencil buffer */
782 screen
->transfer_unmap(screen
, pt
);
783 screen
->tex_transfer_destroy(pt
);
788 * Called via ctx->Driver.DrawPixels()
791 st_DrawPixels(GLcontext
*ctx
, GLint x
, GLint y
, GLsizei width
, GLsizei height
,
792 GLenum format
, GLenum type
,
793 const struct gl_pixelstore_attrib
*unpack
, const GLvoid
*pixels
)
795 struct st_fragment_program
*stfp
;
796 struct st_vertex_program
*stvp
;
797 struct st_context
*st
= st_context(ctx
);
798 struct pipe_surface
*ps
;
799 const GLfloat
*color
;
801 if (format
== GL_STENCIL_INDEX
||
802 format
== GL_DEPTH_STENCIL
) {
803 draw_stencil_pixels(ctx
, x
, y
, width
, height
, format
, type
,
808 /* Mesa state should be up to date by now */
809 assert(ctx
->NewState
== 0x0);
811 st_validate_state(st
);
813 if (format
== GL_DEPTH_COMPONENT
) {
814 ps
= st
->state
.framebuffer
.zsbuf
;
815 stfp
= make_fragment_shader_z(st
);
816 stvp
= st_make_passthrough_vertex_shader(st
, GL_TRUE
);
817 color
= ctx
->Current
.RasterColor
;
820 ps
= st
->state
.framebuffer
.cbufs
[0];
821 stfp
= combined_drawpix_fragment_program(ctx
);
822 stvp
= st_make_passthrough_vertex_shader(st
, GL_FALSE
);
826 /* draw with textured quad */
828 struct pipe_texture
*pt
829 = make_texture(st
, width
, height
, format
, type
, unpack
, pixels
);
831 draw_textured_quad(ctx
, x
, y
, ctx
->Current
.RasterPos
[2],
832 width
, height
, ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
833 pt
, stvp
, stfp
, color
, GL_FALSE
);
834 pipe_texture_reference(&pt
, NULL
);
842 copy_stencil_pixels(GLcontext
*ctx
, GLint srcx
, GLint srcy
,
843 GLsizei width
, GLsizei height
,
844 GLint dstx
, GLint dsty
)
846 struct st_renderbuffer
*rbDraw
= st_renderbuffer(ctx
->DrawBuffer
->_StencilBuffer
);
847 struct pipe_screen
*screen
= ctx
->st
->pipe
->screen
;
848 enum pipe_transfer_usage usage
;
849 struct pipe_transfer
*ptDraw
;
854 buffer
= _mesa_malloc(width
* height
* sizeof(ubyte
));
856 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCopyPixels(stencil)");
860 /* this will do stencil pixel transfer ops */
861 st_read_stencil_pixels(ctx
, srcx
, srcy
, width
, height
,
862 GL_STENCIL_INDEX
, GL_UNSIGNED_BYTE
,
863 &ctx
->DefaultPacking
, buffer
);
865 if(pf_get_component_bits( rbDraw
->format
, PIPE_FORMAT_COMP_Z
) != 0)
866 usage
= PIPE_TRANSFER_READ_WRITE
;
868 usage
= PIPE_TRANSFER_WRITE
;
870 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
871 dsty
= rbDraw
->Base
.Height
- dsty
- height
;
874 ptDraw
= st_cond_flush_get_tex_transfer(st_context(ctx
),
875 rbDraw
->texture
, 0, 0, 0,
879 assert(ptDraw
->block
.width
== 1);
880 assert(ptDraw
->block
.height
== 1);
882 /* map the stencil buffer */
883 drawMap
= screen
->transfer_map(screen
, ptDraw
);
886 /* XXX PixelZoom not handled yet */
887 for (i
= 0; i
< height
; i
++) {
894 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
898 dst
= drawMap
+ y
* ptDraw
->stride
;
899 src
= buffer
+ i
* width
;
901 switch (ptDraw
->format
) {
902 case PIPE_FORMAT_S8Z24_UNORM
:
904 uint
*dst4
= (uint
*) dst
;
906 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
907 for (j
= 0; j
< width
; j
++) {
908 *dst4
= (*dst4
& 0xffffff) | (src
[j
] << 24);
913 case PIPE_FORMAT_Z24S8_UNORM
:
915 uint
*dst4
= (uint
*) dst
;
917 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
918 for (j
= 0; j
< width
; j
++) {
919 *dst4
= (*dst4
& 0xffffff00) | (src
[j
] & 0xff);
924 case PIPE_FORMAT_S8_UNORM
:
925 assert(usage
== PIPE_TRANSFER_WRITE
);
926 memcpy(dst
, src
, width
);
935 /* unmap the stencil buffer */
936 screen
->transfer_unmap(screen
, ptDraw
);
937 screen
->tex_transfer_destroy(ptDraw
);
942 st_CopyPixels(GLcontext
*ctx
, GLint srcx
, GLint srcy
,
943 GLsizei width
, GLsizei height
,
944 GLint dstx
, GLint dsty
, GLenum type
)
946 struct st_context
*st
= st_context(ctx
);
947 struct pipe_context
*pipe
= st
->pipe
;
948 struct pipe_screen
*screen
= pipe
->screen
;
949 struct st_renderbuffer
*rbRead
;
950 struct st_vertex_program
*stvp
;
951 struct st_fragment_program
*stfp
;
952 struct pipe_texture
*pt
;
954 enum pipe_format srcFormat
, texFormat
;
957 pipe
->flush(pipe
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
959 st_validate_state(st
);
985 if (width
< 0 || height
< 0)
989 if (type
== GL_STENCIL
) {
990 /* can't use texturing to do stencil */
991 copy_stencil_pixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
);
995 if (type
== GL_COLOR
) {
996 rbRead
= st_get_color_read_renderbuffer(ctx
);
998 stfp
= combined_drawpix_fragment_program(ctx
);
999 stvp
= st_make_passthrough_vertex_shader(st
, GL_FALSE
);
1002 assert(type
== GL_DEPTH
);
1003 rbRead
= st_renderbuffer(ctx
->ReadBuffer
->_DepthBuffer
);
1004 color
= ctx
->Current
.Attrib
[VERT_ATTRIB_COLOR0
];
1005 stfp
= make_fragment_shader_z(st
);
1006 stvp
= st_make_passthrough_vertex_shader(st
, GL_TRUE
);
1009 srcFormat
= rbRead
->texture
->format
;
1011 if (screen
->is_format_supported(screen
, srcFormat
, PIPE_TEXTURE_2D
,
1012 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
1013 texFormat
= srcFormat
;
1016 /* srcFormat can't be used as a texture format */
1017 if (type
== GL_DEPTH
) {
1018 texFormat
= st_choose_format(screen
, GL_DEPTH_COMPONENT
,
1020 PIPE_TEXTURE_USAGE_DEPTH_STENCIL
);
1021 assert(texFormat
!= PIPE_FORMAT_NONE
); /* XXX no depth texture formats??? */
1024 /* default color format */
1025 texFormat
= st_choose_format(screen
, GL_RGBA
, PIPE_TEXTURE_2D
,
1026 PIPE_TEXTURE_USAGE_SAMPLER
);
1027 assert(texFormat
!= PIPE_FORMAT_NONE
);
1031 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
1032 srcy
= ctx
->DrawBuffer
->Height
- srcy
- height
;
1043 /* Need to use POT texture? */
1046 if (!screen
->get_param(screen
, PIPE_CAP_NPOT_TEXTURES
)) {
1049 l2pt
= util_logbase2(width
);
1050 if (1<<l2pt
!= width
) {
1053 l2pt
= util_logbase2(height
);
1054 if (1<<l2pt
!= height
) {
1058 /* Check against maximum texture size */
1059 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
1060 assert(ptw
<= maxSize
);
1061 assert(pth
<= maxSize
);
1064 pt
= st_texture_create(st
, PIPE_TEXTURE_2D
, texFormat
, 0,
1066 PIPE_TEXTURE_USAGE_SAMPLER
);
1071 if (srcFormat
== texFormat
) {
1072 /* copy source framebuffer surface into mipmap/texture */
1073 struct pipe_surface
*psRead
= screen
->get_tex_surface(screen
,
1074 rbRead
->texture
, 0, 0, 0,
1075 PIPE_BUFFER_USAGE_GPU_READ
);
1076 struct pipe_surface
*psTex
= screen
->get_tex_surface(screen
, pt
, 0, 0, 0,
1077 PIPE_BUFFER_USAGE_GPU_WRITE
);
1078 pipe
->surface_copy(pipe
,
1082 srcx
, srcy
, width
, height
);
1083 pipe_surface_reference(&psRead
, NULL
);
1084 pipe_surface_reference(&psTex
, NULL
);
1087 /* CPU-based fallback/conversion */
1088 struct pipe_transfer
*ptRead
=
1089 st_cond_flush_get_tex_transfer(st
, rbRead
->texture
, 0, 0, 0,
1090 PIPE_TRANSFER_READ
, srcx
, srcy
, width
,
1092 struct pipe_transfer
*ptTex
;
1093 enum pipe_transfer_usage transfer_usage
;
1095 if (ST_DEBUG
& DEBUG_FALLBACK
)
1096 debug_printf("%s: fallback processing\n", __FUNCTION__
);
1098 if (type
== GL_DEPTH
&& pf_is_depth_and_stencil(pt
->format
))
1099 transfer_usage
= PIPE_TRANSFER_READ_WRITE
;
1101 transfer_usage
= PIPE_TRANSFER_WRITE
;
1103 ptTex
= st_cond_flush_get_tex_transfer(st
, pt
, 0, 0, 0, transfer_usage
,
1104 0, 0, width
, height
);
1106 if (type
== GL_COLOR
) {
1107 /* alternate path using get/put_tile() */
1108 GLfloat
*buf
= (GLfloat
*) _mesa_malloc(width
* height
* 4 * sizeof(GLfloat
));
1110 pipe_get_tile_rgba(ptRead
, 0, 0, width
, height
, buf
);
1111 pipe_put_tile_rgba(ptTex
, 0, 0, width
, height
, buf
);
1117 GLuint
*buf
= (GLuint
*) _mesa_malloc(width
* height
* sizeof(GLuint
));
1118 pipe_get_tile_z(ptRead
, 0, 0, width
, height
, buf
);
1119 pipe_put_tile_z(ptTex
, 0, 0, width
, height
, buf
);
1123 screen
->tex_transfer_destroy(ptRead
);
1124 screen
->tex_transfer_destroy(ptTex
);
1127 /* draw textured quad */
1128 draw_textured_quad(ctx
, dstx
, dsty
, ctx
->Current
.RasterPos
[2],
1129 width
, height
, ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
1130 pt
, stvp
, stfp
, color
, GL_TRUE
);
1132 pipe_texture_reference(&pt
, NULL
);
1137 void st_init_drawpixels_functions(struct dd_function_table
*functions
)
1139 functions
->DrawPixels
= st_DrawPixels
;
1140 functions
->CopyPixels
= st_CopyPixels
;
1145 st_destroy_drawpix(struct st_context
*st
)
1147 st_reference_fragprog(st
, &st
->drawpix
.z_shader
, NULL
);
1148 st_reference_fragprog(st
, &st
->pixel_xfer
.combined_prog
, NULL
);
1149 st_reference_vertprog(st
, &st
->drawpix
.vert_shaders
[0], NULL
);
1150 st_reference_vertprog(st
, &st
->drawpix
.vert_shaders
[1], NULL
);