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 "util/u_rect.h"
66 #include "shader/prog_instruction.h"
67 #include "cso_cache/cso_context.h"
71 * Check if the given program is:
72 * 0: MOVE result.color, fragment.color;
76 is_passthrough_program(const struct gl_fragment_program
*prog
)
78 if (prog
->Base
.NumInstructions
== 2) {
79 const struct prog_instruction
*inst
= prog
->Base
.Instructions
;
80 if (inst
[0].Opcode
== OPCODE_MOV
&&
81 inst
[1].Opcode
== OPCODE_END
&&
82 inst
[0].DstReg
.File
== PROGRAM_OUTPUT
&&
83 inst
[0].DstReg
.Index
== FRAG_RESULT_COLOR
&&
84 inst
[0].DstReg
.WriteMask
== WRITEMASK_XYZW
&&
85 inst
[0].SrcReg
[0].File
== PROGRAM_INPUT
&&
86 inst
[0].SrcReg
[0].Index
== FRAG_ATTRIB_COL0
&&
87 inst
[0].SrcReg
[0].Swizzle
== SWIZZLE_XYZW
) {
97 * Make fragment shader for glDraw/CopyPixels. This shader is made
98 * by combining the pixel transfer shader with the user-defined shader.
100 static struct st_fragment_program
*
101 combined_drawpix_fragment_program(GLcontext
*ctx
)
103 struct st_context
*st
= st_context(ctx
);
104 struct st_fragment_program
*stfp
;
106 if (st
->pixel_xfer
.program
->serialNo
== st
->pixel_xfer
.xfer_prog_sn
107 && st
->fp
->serialNo
== st
->pixel_xfer
.user_prog_sn
) {
108 /* the pixel tranfer program has not changed and the user-defined
109 * program has not changed, so re-use the combined program.
111 stfp
= st
->pixel_xfer
.combined_prog
;
114 /* Concatenate the pixel transfer program with the current user-
117 if (is_passthrough_program(&st
->fp
->Base
)) {
118 stfp
= (struct st_fragment_program
*)
119 _mesa_clone_program(ctx
, &st
->pixel_xfer
.program
->Base
.Base
);
123 printf("Base program:\n");
124 _mesa_print_program(&st
->fp
->Base
.Base
);
125 printf("DrawPix program:\n");
126 _mesa_print_program(&st
->pixel_xfer
.program
->Base
.Base
);
128 stfp
= (struct st_fragment_program
*)
129 _mesa_combine_programs(ctx
,
130 &st
->pixel_xfer
.program
->Base
.Base
,
136 struct gl_program
*p
= &stfp
->Base
.Base
;
137 printf("Combined DrawPixels program:\n");
138 _mesa_print_program(p
);
139 printf("InputsRead: 0x%x\n", p
->InputsRead
);
140 printf("OutputsWritten: 0x%x\n", p
->OutputsWritten
);
141 _mesa_print_parameter_list(p
->Parameters
);
145 /* translate to TGSI tokens */
146 st_translate_fragment_program(st
, stfp
, NULL
);
148 /* save new program, update serial numbers */
149 st
->pixel_xfer
.xfer_prog_sn
= st
->pixel_xfer
.program
->serialNo
;
150 st
->pixel_xfer
.user_prog_sn
= st
->fp
->serialNo
;
151 st
->pixel_xfer
.combined_prog_sn
= stfp
->serialNo
;
152 /* can't reference new program directly, already have a reference on it */
153 st_reference_fragprog(st
, &st
->pixel_xfer
.combined_prog
, NULL
);
154 st
->pixel_xfer
.combined_prog
= stfp
;
157 /* Ideally we'd have updated the pipe constants during the normal
158 * st/atom mechanism. But we can't since this is specific to glDrawPixels.
160 st_upload_constants(st
, stfp
->Base
.Base
.Parameters
, PIPE_SHADER_FRAGMENT
);
167 * Create fragment shader that does a TEX() instruction to get a Z
168 * value, then writes to FRAG_RESULT_DEPTH.
169 * Pass fragment color through as-is.
171 static struct st_fragment_program
*
172 make_fragment_shader_z(struct st_context
*st
)
174 GLcontext
*ctx
= st
->ctx
;
175 struct gl_program
*p
;
178 if (st
->drawpix
.z_shader
) {
179 return st
->drawpix
.z_shader
;
185 p
= ctx
->Driver
.NewProgram(ctx
, GL_FRAGMENT_PROGRAM_ARB
, 0);
189 p
->NumInstructions
= 3;
191 p
->Instructions
= _mesa_alloc_instructions(p
->NumInstructions
);
192 if (!p
->Instructions
) {
193 ctx
->Driver
.DeleteProgram(ctx
, p
);
196 _mesa_init_instructions(p
->Instructions
, p
->NumInstructions
);
198 /* TEX result.depth, fragment.texcoord[0], texture[0], 2D; */
199 p
->Instructions
[ic
].Opcode
= OPCODE_TEX
;
200 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
201 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_DEPTH
;
202 p
->Instructions
[ic
].DstReg
.WriteMask
= WRITEMASK_Z
;
203 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
204 p
->Instructions
[ic
].SrcReg
[0].Index
= FRAG_ATTRIB_TEX0
;
205 p
->Instructions
[ic
].TexSrcUnit
= 0;
206 p
->Instructions
[ic
].TexSrcTarget
= TEXTURE_2D_INDEX
;
209 /* MOV result.color, fragment.color */
210 p
->Instructions
[ic
].Opcode
= OPCODE_MOV
;
211 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
212 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_COLOR
;
213 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
214 p
->Instructions
[ic
].SrcReg
[0].Index
= FRAG_ATTRIB_COL0
;
218 p
->Instructions
[ic
++].Opcode
= OPCODE_END
;
220 assert(ic
== p
->NumInstructions
);
222 p
->InputsRead
= FRAG_BIT_TEX0
| FRAG_BIT_COL0
;
223 p
->OutputsWritten
= (1 << FRAG_RESULT_COLOR
) | (1 << FRAG_RESULT_DEPTH
);
224 p
->SamplersUsed
= 0x1; /* sampler 0 (bit 0) is used */
226 st
->drawpix
.z_shader
= (struct st_fragment_program
*) p
;
227 st_translate_fragment_program(st
, st
->drawpix
.z_shader
, NULL
);
229 return st
->drawpix
.z_shader
;
235 * Create a simple vertex shader that just passes through the
236 * vertex position and texcoord (and optionally, color).
238 static struct st_vertex_program
*
239 st_make_passthrough_vertex_shader(struct st_context
*st
, GLboolean passColor
)
241 GLcontext
*ctx
= st
->ctx
;
242 struct st_vertex_program
*stvp
;
243 struct gl_program
*p
;
246 if (st
->drawpix
.vert_shaders
[passColor
])
247 return st
->drawpix
.vert_shaders
[passColor
];
252 p
= ctx
->Driver
.NewProgram(ctx
, GL_VERTEX_PROGRAM_ARB
, 0);
257 p
->NumInstructions
= 4;
259 p
->NumInstructions
= 3;
261 p
->Instructions
= _mesa_alloc_instructions(p
->NumInstructions
);
262 if (!p
->Instructions
) {
263 ctx
->Driver
.DeleteProgram(ctx
, p
);
266 _mesa_init_instructions(p
->Instructions
, p
->NumInstructions
);
267 /* MOV result.pos, vertex.pos; */
268 p
->Instructions
[0].Opcode
= OPCODE_MOV
;
269 p
->Instructions
[0].DstReg
.File
= PROGRAM_OUTPUT
;
270 p
->Instructions
[0].DstReg
.Index
= VERT_RESULT_HPOS
;
271 p
->Instructions
[0].SrcReg
[0].File
= PROGRAM_INPUT
;
272 p
->Instructions
[0].SrcReg
[0].Index
= VERT_ATTRIB_POS
;
273 /* MOV result.texcoord0, vertex.texcoord0; */
274 p
->Instructions
[1].Opcode
= OPCODE_MOV
;
275 p
->Instructions
[1].DstReg
.File
= PROGRAM_OUTPUT
;
276 p
->Instructions
[1].DstReg
.Index
= VERT_RESULT_TEX0
;
277 p
->Instructions
[1].SrcReg
[0].File
= PROGRAM_INPUT
;
278 p
->Instructions
[1].SrcReg
[0].Index
= VERT_ATTRIB_TEX0
;
281 /* MOV result.color0, vertex.color0; */
282 p
->Instructions
[ic
].Opcode
= OPCODE_MOV
;
283 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
284 p
->Instructions
[ic
].DstReg
.Index
= VERT_RESULT_COL0
;
285 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
286 p
->Instructions
[ic
].SrcReg
[0].Index
= VERT_ATTRIB_COLOR0
;
291 p
->Instructions
[ic
].Opcode
= OPCODE_END
;
294 assert(ic
== p
->NumInstructions
);
296 p
->InputsRead
= VERT_BIT_POS
| VERT_BIT_TEX0
;
297 p
->OutputsWritten
= ((1 << VERT_RESULT_TEX0
) |
298 (1 << VERT_RESULT_HPOS
));
300 p
->InputsRead
|= VERT_BIT_COLOR0
;
301 p
->OutputsWritten
|= (1 << VERT_RESULT_COL0
);
304 stvp
= (struct st_vertex_program
*) p
;
305 st_translate_vertex_program(st
, stvp
, NULL
, NULL
, NULL
);
307 st
->drawpix
.vert_shaders
[passColor
] = stvp
;
314 _mesa_base_format(GLenum format
)
317 case GL_DEPTH_COMPONENT
:
318 return GL_DEPTH_COMPONENT
;
319 case GL_DEPTH_STENCIL
:
320 return GL_DEPTH_STENCIL
;
321 case GL_STENCIL_INDEX
:
322 return GL_STENCIL_INDEX
;
330 * Make texture containing an image for glDrawPixels image.
331 * If 'pixels' is NULL, leave the texture image data undefined.
333 static struct pipe_texture
*
334 make_texture(struct st_context
*st
,
335 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
336 const struct gl_pixelstore_attrib
*unpack
,
337 const GLvoid
*pixels
)
339 GLcontext
*ctx
= st
->ctx
;
340 struct pipe_context
*pipe
= st
->pipe
;
341 struct pipe_screen
*screen
= pipe
->screen
;
342 const struct gl_texture_format
*mformat
;
343 struct pipe_texture
*pt
;
344 enum pipe_format pipeFormat
;
349 baseFormat
= _mesa_base_format(format
);
351 mformat
= st_ChooseTextureFormat(ctx
, baseFormat
, format
, type
);
354 pipeFormat
= st_mesa_format_to_pipe_format(mformat
->MesaFormat
);
356 cpp
= st_sizeof_format(pipeFormat
);
358 pixels
= _mesa_map_pbo_source(ctx
, unpack
, pixels
);
362 /* Need to use POT texture? */
365 if (!screen
->get_param(screen
, PIPE_CAP_NPOT_TEXTURES
)) {
368 l2pt
= util_logbase2(width
);
369 if (1<<l2pt
!= width
) {
372 l2pt
= util_logbase2(height
);
373 if (1<<l2pt
!= height
) {
377 /* Check against maximum texture size */
378 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
379 assert(ptw
<= maxSize
);
380 assert(pth
<= maxSize
);
383 pt
= st_texture_create(st
, PIPE_TEXTURE_2D
, pipeFormat
, 0, ptw
, pth
, 1,
384 PIPE_TEXTURE_USAGE_SAMPLER
);
386 _mesa_unmap_pbo_source(ctx
, unpack
);
391 struct pipe_transfer
*transfer
;
392 static const GLuint dstImageOffsets
= 0;
395 const GLbitfield imageTransferStateSave
= ctx
->_ImageTransferState
;
397 /* we'll do pixel transfer in a fragment shader */
398 ctx
->_ImageTransferState
= 0x0;
400 transfer
= st_no_flush_get_tex_transfer(st
, pt
, 0, 0, 0,
401 PIPE_TRANSFER_WRITE
, 0, 0,
404 /* map texture transfer */
405 dest
= screen
->transfer_map(screen
, transfer
);
407 /* Put image into texture transfer.
408 * Note that the image is actually going to be upside down in
409 * the texture. We deal with that with texcoords.
411 success
= mformat
->StoreImage(ctx
, 2, /* dims */
412 baseFormat
, /* baseInternalFormat */
413 mformat
, /* gl_texture_format */
415 0, 0, 0, /* dstX/Y/Zoffset */
416 transfer
->stride
, /* dstRowStride, bytes */
417 &dstImageOffsets
, /* dstImageOffsets */
418 width
, height
, 1, /* size */
419 format
, type
, /* src format/type */
420 pixels
, /* data source */
424 screen
->transfer_unmap(screen
, transfer
);
425 screen
->tex_transfer_destroy(transfer
);
430 ctx
->_ImageTransferState
= imageTransferStateSave
;
433 _mesa_unmap_pbo_source(ctx
, unpack
);
440 * Draw quad with texcoords and optional color.
441 * Coords are window coords with y=0=bottom.
442 * \param color may be null
443 * \param invertTex if true, flip texcoords vertically
446 draw_quad(GLcontext
*ctx
, GLfloat x0
, GLfloat y0
, GLfloat z
,
447 GLfloat x1
, GLfloat y1
, const GLfloat
*color
,
448 GLboolean invertTex
, GLfloat maxXcoord
, GLfloat maxYcoord
)
450 struct st_context
*st
= st_context(ctx
);
451 struct pipe_context
*pipe
= st
->pipe
;
452 GLfloat verts
[4][3][4]; /* four verts, three attribs, XYZW */
454 /* setup vertex data */
456 const struct gl_framebuffer
*fb
= st
->ctx
->DrawBuffer
;
457 const GLfloat fb_width
= (GLfloat
) fb
->Width
;
458 const GLfloat fb_height
= (GLfloat
) fb
->Height
;
459 const GLfloat clip_x0
= x0
/ fb_width
* 2.0f
- 1.0f
;
460 const GLfloat clip_y0
= y0
/ fb_height
* 2.0f
- 1.0f
;
461 const GLfloat clip_x1
= x1
/ fb_width
* 2.0f
- 1.0f
;
462 const GLfloat clip_y1
= y1
/ fb_height
* 2.0f
- 1.0f
;
463 const GLfloat sLeft
= 0.0f
, sRight
= maxXcoord
;
464 const GLfloat tTop
= invertTex
? maxYcoord
: 0.0f
;
465 const GLfloat tBot
= invertTex
? 0.0f
: maxYcoord
;
469 verts
[0][0][0] = clip_x0
; /* v[0].attr[0].x */
470 verts
[0][0][1] = clip_y0
; /* v[0].attr[0].y */
473 verts
[1][0][0] = clip_x1
;
474 verts
[1][0][1] = clip_y0
;
477 verts
[2][0][0] = clip_x1
;
478 verts
[2][0][1] = clip_y1
;
481 verts
[3][0][0] = clip_x0
;
482 verts
[3][0][1] = clip_y1
;
485 verts
[0][tex
][0] = sLeft
; /* v[0].attr[tex].s */
486 verts
[0][tex
][1] = tTop
; /* v[0].attr[tex].t */
487 verts
[1][tex
][0] = sRight
;
488 verts
[1][tex
][1] = tTop
;
489 verts
[2][tex
][0] = sRight
;
490 verts
[2][tex
][1] = tBot
;
491 verts
[3][tex
][0] = sLeft
;
492 verts
[3][tex
][1] = tBot
;
494 /* same for all verts: */
496 for (i
= 0; i
< 4; i
++) {
497 verts
[i
][0][2] = z
; /*Z*/
498 verts
[i
][0][3] = 1.0f
; /*W*/
499 verts
[i
][1][0] = color
[0];
500 verts
[i
][1][1] = color
[1];
501 verts
[i
][1][2] = color
[2];
502 verts
[i
][1][3] = color
[3];
503 verts
[i
][2][2] = 0.0f
; /*R*/
504 verts
[i
][2][3] = 1.0f
; /*Q*/
508 for (i
= 0; i
< 4; i
++) {
509 verts
[i
][0][2] = z
; /*Z*/
510 verts
[i
][0][3] = 1.0f
; /*W*/
511 verts
[i
][1][2] = 0.0f
; /*R*/
512 verts
[i
][1][3] = 1.0f
; /*Q*/
518 struct pipe_buffer
*buf
;
520 /* allocate/load buffer object with vertex data */
521 buf
= pipe_buffer_create(pipe
->screen
, 32, PIPE_BUFFER_USAGE_VERTEX
,
523 st_no_flush_pipe_buffer_write(st
, buf
, 0, sizeof(verts
), verts
);
525 util_draw_vertex_buffer(pipe
, buf
, 0,
528 3); /* attribs/vert */
529 pipe_buffer_reference(&buf
, NULL
);
536 draw_textured_quad(GLcontext
*ctx
, GLint x
, GLint y
, GLfloat z
,
537 GLsizei width
, GLsizei height
,
538 GLfloat zoomX
, GLfloat zoomY
,
539 struct pipe_texture
*pt
,
540 struct st_vertex_program
*stvp
,
541 struct st_fragment_program
*stfp
,
542 const GLfloat
*color
,
545 struct st_context
*st
= st_context(ctx
);
546 struct pipe_context
*pipe
= st
->pipe
;
547 struct cso_context
*cso
= st
->cso_context
;
548 GLfloat x0
, y0
, x1
, y1
;
552 /* XXX if DrawPixels image is larger than max texture size, break
555 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
556 assert(width
<= maxSize
);
557 assert(height
<= maxSize
);
559 cso_save_rasterizer(cso
);
560 cso_save_viewport(cso
);
561 cso_save_samplers(cso
);
562 cso_save_sampler_textures(cso
);
563 cso_save_fragment_shader(cso
);
564 cso_save_vertex_shader(cso
);
566 /* rasterizer state: just scissor */
568 struct pipe_rasterizer_state rasterizer
;
569 memset(&rasterizer
, 0, sizeof(rasterizer
));
570 rasterizer
.gl_rasterization_rules
= 1;
571 rasterizer
.scissor
= ctx
->Scissor
.Enabled
;
572 cso_set_rasterizer(cso
, &rasterizer
);
575 /* fragment shader state: TEX lookup program */
576 cso_set_fragment_shader_handle(cso
, stfp
->driver_shader
);
578 /* vertex shader state: position + texcoord pass-through */
579 cso_set_vertex_shader_handle(cso
, stvp
->driver_shader
);
582 /* texture sampling state: */
584 struct pipe_sampler_state sampler
;
585 memset(&sampler
, 0, sizeof(sampler
));
586 sampler
.wrap_s
= PIPE_TEX_WRAP_CLAMP
;
587 sampler
.wrap_t
= PIPE_TEX_WRAP_CLAMP
;
588 sampler
.wrap_r
= PIPE_TEX_WRAP_CLAMP
;
589 sampler
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
590 sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
591 sampler
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
592 sampler
.normalized_coords
= 1;
594 cso_single_sampler(cso
, 0, &sampler
);
595 if (st
->pixel_xfer
.pixelmap_enabled
) {
596 cso_single_sampler(cso
, 1, &sampler
);
598 cso_single_sampler_done(cso
);
601 /* viewport state: viewport matching window dims */
603 const float w
= (float) ctx
->DrawBuffer
->Width
;
604 const float h
= (float) ctx
->DrawBuffer
->Height
;
605 struct pipe_viewport_state vp
;
606 vp
.scale
[0] = 0.5f
* w
;
607 vp
.scale
[1] = -0.5f
* h
;
610 vp
.translate
[0] = 0.5f
* w
;
611 vp
.translate
[1] = 0.5f
* h
;
612 vp
.translate
[2] = 0.0f
;
613 vp
.translate
[3] = 0.0f
;
614 cso_set_viewport(cso
, &vp
);
618 if (st
->pixel_xfer
.pixelmap_enabled
) {
619 struct pipe_texture
*textures
[2];
621 textures
[1] = st
->pixel_xfer
.pixelmap_texture
;
622 pipe
->set_sampler_textures(pipe
, 2, textures
);
625 pipe
->set_sampler_textures(pipe
, 1, &pt
);
628 /* Compute window coords (y=0=bottom) with pixel zoom.
629 * Recall that these coords are transformed by the current
630 * vertex shader and viewport transformation.
633 x1
= x
+ width
* ctx
->Pixel
.ZoomX
;
635 y1
= y
+ height
* ctx
->Pixel
.ZoomY
;
637 draw_quad(ctx
, x0
, y0
, z
, x1
, y1
, color
, invertTex
,
638 (GLfloat
) width
/ pt
->width
[0],
639 (GLfloat
) height
/ pt
->height
[0]);
642 cso_restore_rasterizer(cso
);
643 cso_restore_viewport(cso
);
644 cso_restore_samplers(cso
);
645 cso_restore_sampler_textures(cso
);
646 cso_restore_fragment_shader(cso
);
647 cso_restore_vertex_shader(cso
);
652 draw_stencil_pixels(GLcontext
*ctx
, GLint x
, GLint y
,
653 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
654 const struct gl_pixelstore_attrib
*unpack
,
655 const GLvoid
*pixels
)
657 struct st_context
*st
= st_context(ctx
);
658 struct pipe_context
*pipe
= st
->pipe
;
659 struct pipe_screen
*screen
= pipe
->screen
;
660 struct st_renderbuffer
*strb
;
661 enum pipe_transfer_usage usage
;
662 struct pipe_transfer
*pt
;
663 const GLboolean zoom
= ctx
->Pixel
.ZoomX
!= 1.0 || ctx
->Pixel
.ZoomY
!= 1.0;
667 strb
= st_renderbuffer(ctx
->DrawBuffer
->
668 Attachment
[BUFFER_STENCIL
].Renderbuffer
);
670 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
671 y
= ctx
->DrawBuffer
->Height
- y
- height
;
674 if(format
!= GL_DEPTH_STENCIL
&&
675 pf_get_component_bits( strb
->format
, PIPE_FORMAT_COMP_Z
) != 0)
676 usage
= PIPE_TRANSFER_READ_WRITE
;
678 usage
= PIPE_TRANSFER_WRITE
;
680 pt
= st_cond_flush_get_tex_transfer(st_context(ctx
), strb
->texture
, 0, 0, 0,
684 stmap
= screen
->transfer_map(screen
, pt
);
686 pixels
= _mesa_map_pbo_source(ctx
, unpack
, pixels
);
689 /* if width > MAX_WIDTH, have to process image in chunks */
691 while (skipPixels
< width
) {
692 const GLint spanX
= skipPixels
;
693 const GLint spanWidth
= MIN2(width
- skipPixels
, MAX_WIDTH
);
695 for (row
= 0; row
< height
; row
++) {
696 GLubyte sValues
[MAX_WIDTH
];
697 GLuint zValues
[MAX_WIDTH
];
698 GLenum destType
= GL_UNSIGNED_BYTE
;
699 const GLvoid
*source
= _mesa_image_address2d(unpack
, pixels
,
703 _mesa_unpack_stencil_span(ctx
, spanWidth
, destType
, sValues
,
704 type
, source
, unpack
,
705 ctx
->_ImageTransferState
);
707 if (format
== GL_DEPTH_STENCIL
) {
708 _mesa_unpack_depth_span(ctx
, spanWidth
, GL_UNSIGNED_INT
, zValues
,
709 (1 << 24) - 1, type
, source
, unpack
);
713 _mesa_problem(ctx
, "Gallium glDrawPixels(GL_STENCIL) with "
714 "zoom not complete");
720 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
721 spanY
= height
- row
- 1;
727 /* now pack the stencil (and Z) values in the dest format */
728 switch (pt
->format
) {
729 case PIPE_FORMAT_S8_UNORM
:
731 ubyte
*dest
= stmap
+ spanY
* pt
->stride
+ spanX
;
732 assert(usage
== PIPE_TRANSFER_WRITE
);
733 memcpy(dest
, sValues
, spanWidth
);
736 case PIPE_FORMAT_S8Z24_UNORM
:
737 if (format
== GL_DEPTH_STENCIL
) {
738 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
740 assert(usage
== PIPE_TRANSFER_WRITE
);
741 for (k
= 0; k
< spanWidth
; k
++) {
742 dest
[k
] = zValues
[k
] | (sValues
[k
] << 24);
746 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
748 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
749 for (k
= 0; k
< spanWidth
; k
++) {
750 dest
[k
] = (dest
[k
] & 0xffffff) | (sValues
[k
] << 24);
754 case PIPE_FORMAT_Z24S8_UNORM
:
755 if (format
== GL_DEPTH_STENCIL
) {
756 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
758 assert(usage
== PIPE_TRANSFER_WRITE
);
759 for (k
= 0; k
< spanWidth
; k
++) {
760 dest
[k
] = (zValues
[k
] << 8) | (sValues
[k
] & 0xff);
764 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
+ spanX
*4);
766 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
767 for (k
= 0; k
< spanWidth
; k
++) {
768 dest
[k
] = (dest
[k
] & 0xffffff00) | (sValues
[k
] & 0xff);
777 skipPixels
+= spanWidth
;
780 _mesa_unmap_pbo_source(ctx
, unpack
);
782 /* unmap the stencil buffer */
783 screen
->transfer_unmap(screen
, pt
);
784 screen
->tex_transfer_destroy(pt
);
789 * Called via ctx->Driver.DrawPixels()
792 st_DrawPixels(GLcontext
*ctx
, GLint x
, GLint y
, GLsizei width
, GLsizei height
,
793 GLenum format
, GLenum type
,
794 const struct gl_pixelstore_attrib
*unpack
, const GLvoid
*pixels
)
796 struct st_fragment_program
*stfp
;
797 struct st_vertex_program
*stvp
;
798 struct st_context
*st
= st_context(ctx
);
799 struct pipe_surface
*ps
;
800 const GLfloat
*color
;
802 if (format
== GL_STENCIL_INDEX
||
803 format
== GL_DEPTH_STENCIL
) {
804 draw_stencil_pixels(ctx
, x
, y
, width
, height
, format
, type
,
809 /* Mesa state should be up to date by now */
810 assert(ctx
->NewState
== 0x0);
812 st_validate_state(st
);
814 if (format
== GL_DEPTH_COMPONENT
) {
815 ps
= st
->state
.framebuffer
.zsbuf
;
816 stfp
= make_fragment_shader_z(st
);
817 stvp
= st_make_passthrough_vertex_shader(st
, GL_TRUE
);
818 color
= ctx
->Current
.RasterColor
;
821 ps
= st
->state
.framebuffer
.cbufs
[0];
822 stfp
= combined_drawpix_fragment_program(ctx
);
823 stvp
= st_make_passthrough_vertex_shader(st
, GL_FALSE
);
827 /* draw with textured quad */
829 struct pipe_texture
*pt
830 = make_texture(st
, width
, height
, format
, type
, unpack
, pixels
);
832 draw_textured_quad(ctx
, x
, y
, ctx
->Current
.RasterPos
[2],
833 width
, height
, ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
834 pt
, stvp
, stfp
, color
, GL_FALSE
);
835 pipe_texture_reference(&pt
, NULL
);
843 copy_stencil_pixels(GLcontext
*ctx
, GLint srcx
, GLint srcy
,
844 GLsizei width
, GLsizei height
,
845 GLint dstx
, GLint dsty
)
847 struct st_renderbuffer
*rbDraw
= st_renderbuffer(ctx
->DrawBuffer
->_StencilBuffer
);
848 struct pipe_screen
*screen
= ctx
->st
->pipe
->screen
;
849 enum pipe_transfer_usage usage
;
850 struct pipe_transfer
*ptDraw
;
855 buffer
= _mesa_malloc(width
* height
* sizeof(ubyte
));
857 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCopyPixels(stencil)");
861 /* this will do stencil pixel transfer ops */
862 st_read_stencil_pixels(ctx
, srcx
, srcy
, width
, height
,
863 GL_STENCIL_INDEX
, GL_UNSIGNED_BYTE
,
864 &ctx
->DefaultPacking
, buffer
);
866 if(pf_get_component_bits( rbDraw
->format
, PIPE_FORMAT_COMP_Z
) != 0)
867 usage
= PIPE_TRANSFER_READ_WRITE
;
869 usage
= PIPE_TRANSFER_WRITE
;
871 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
872 dsty
= rbDraw
->Base
.Height
- dsty
- height
;
875 ptDraw
= st_cond_flush_get_tex_transfer(st_context(ctx
),
876 rbDraw
->texture
, 0, 0, 0,
880 assert(ptDraw
->block
.width
== 1);
881 assert(ptDraw
->block
.height
== 1);
883 /* map the stencil buffer */
884 drawMap
= screen
->transfer_map(screen
, ptDraw
);
887 /* XXX PixelZoom not handled yet */
888 for (i
= 0; i
< height
; i
++) {
895 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
899 dst
= drawMap
+ y
* ptDraw
->stride
;
900 src
= buffer
+ i
* width
;
902 switch (ptDraw
->format
) {
903 case PIPE_FORMAT_S8Z24_UNORM
:
905 uint
*dst4
= (uint
*) dst
;
907 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
908 for (j
= 0; j
< width
; j
++) {
909 *dst4
= (*dst4
& 0xffffff) | (src
[j
] << 24);
914 case PIPE_FORMAT_Z24S8_UNORM
:
916 uint
*dst4
= (uint
*) dst
;
918 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
919 for (j
= 0; j
< width
; j
++) {
920 *dst4
= (*dst4
& 0xffffff00) | (src
[j
] & 0xff);
925 case PIPE_FORMAT_S8_UNORM
:
926 assert(usage
== PIPE_TRANSFER_WRITE
);
927 memcpy(dst
, src
, width
);
936 /* unmap the stencil buffer */
937 screen
->transfer_unmap(screen
, ptDraw
);
938 screen
->tex_transfer_destroy(ptDraw
);
943 st_CopyPixels(GLcontext
*ctx
, GLint srcx
, GLint srcy
,
944 GLsizei width
, GLsizei height
,
945 GLint dstx
, GLint dsty
, GLenum type
)
947 struct st_context
*st
= st_context(ctx
);
948 struct pipe_context
*pipe
= st
->pipe
;
949 struct pipe_screen
*screen
= pipe
->screen
;
950 struct st_renderbuffer
*rbRead
;
951 struct st_vertex_program
*stvp
;
952 struct st_fragment_program
*stfp
;
953 struct pipe_texture
*pt
;
955 enum pipe_format srcFormat
, texFormat
;
958 pipe
->flush(pipe
, PIPE_FLUSH_RENDER_CACHE
, NULL
);
960 st_validate_state(st
);
986 if (width
< 0 || height
< 0)
990 if (type
== GL_STENCIL
) {
991 /* can't use texturing to do stencil */
992 copy_stencil_pixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
);
996 if (type
== GL_COLOR
) {
997 rbRead
= st_get_color_read_renderbuffer(ctx
);
999 stfp
= combined_drawpix_fragment_program(ctx
);
1000 stvp
= st_make_passthrough_vertex_shader(st
, GL_FALSE
);
1003 assert(type
== GL_DEPTH
);
1004 rbRead
= st_renderbuffer(ctx
->ReadBuffer
->_DepthBuffer
);
1005 color
= ctx
->Current
.Attrib
[VERT_ATTRIB_COLOR0
];
1006 stfp
= make_fragment_shader_z(st
);
1007 stvp
= st_make_passthrough_vertex_shader(st
, GL_TRUE
);
1010 srcFormat
= rbRead
->texture
->format
;
1012 if (screen
->is_format_supported(screen
, srcFormat
, PIPE_TEXTURE_2D
,
1013 PIPE_TEXTURE_USAGE_SAMPLER
, 0)) {
1014 texFormat
= srcFormat
;
1017 /* srcFormat can't be used as a texture format */
1018 if (type
== GL_DEPTH
) {
1019 texFormat
= st_choose_format(screen
, GL_DEPTH_COMPONENT
,
1021 PIPE_TEXTURE_USAGE_DEPTH_STENCIL
);
1022 assert(texFormat
!= PIPE_FORMAT_NONE
); /* XXX no depth texture formats??? */
1025 /* default color format */
1026 texFormat
= st_choose_format(screen
, GL_RGBA
, PIPE_TEXTURE_2D
,
1027 PIPE_TEXTURE_USAGE_SAMPLER
);
1028 assert(texFormat
!= PIPE_FORMAT_NONE
);
1032 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
1033 srcy
= ctx
->DrawBuffer
->Height
- srcy
- height
;
1044 /* Need to use POT texture? */
1047 if (!screen
->get_param(screen
, PIPE_CAP_NPOT_TEXTURES
)) {
1050 l2pt
= util_logbase2(width
);
1051 if (1<<l2pt
!= width
) {
1054 l2pt
= util_logbase2(height
);
1055 if (1<<l2pt
!= height
) {
1059 /* Check against maximum texture size */
1060 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
1061 assert(ptw
<= maxSize
);
1062 assert(pth
<= maxSize
);
1065 pt
= st_texture_create(st
, PIPE_TEXTURE_2D
, texFormat
, 0,
1067 PIPE_TEXTURE_USAGE_SAMPLER
);
1072 if (srcFormat
== texFormat
) {
1073 /* copy source framebuffer surface into mipmap/texture */
1074 struct pipe_surface
*psRead
= screen
->get_tex_surface(screen
,
1075 rbRead
->texture
, 0, 0, 0,
1076 PIPE_BUFFER_USAGE_GPU_READ
);
1077 struct pipe_surface
*psTex
= screen
->get_tex_surface(screen
, pt
, 0, 0, 0,
1078 PIPE_BUFFER_USAGE_GPU_WRITE
);
1079 if (pipe
->surface_copy
) {
1080 pipe
->surface_copy(pipe
,
1084 srcx
, srcy
, width
, height
);
1086 util_surface_copy(pipe
, FALSE
,
1090 srcx
, srcy
, width
, height
);
1092 pipe_surface_reference(&psRead
, NULL
);
1093 pipe_surface_reference(&psTex
, NULL
);
1096 /* CPU-based fallback/conversion */
1097 struct pipe_transfer
*ptRead
=
1098 st_cond_flush_get_tex_transfer(st
, rbRead
->texture
, 0, 0, 0,
1099 PIPE_TRANSFER_READ
, srcx
, srcy
, width
,
1101 struct pipe_transfer
*ptTex
;
1102 enum pipe_transfer_usage transfer_usage
;
1104 if (ST_DEBUG
& DEBUG_FALLBACK
)
1105 debug_printf("%s: fallback processing\n", __FUNCTION__
);
1107 if (type
== GL_DEPTH
&& pf_is_depth_and_stencil(pt
->format
))
1108 transfer_usage
= PIPE_TRANSFER_READ_WRITE
;
1110 transfer_usage
= PIPE_TRANSFER_WRITE
;
1112 ptTex
= st_cond_flush_get_tex_transfer(st
, pt
, 0, 0, 0, transfer_usage
,
1113 0, 0, width
, height
);
1115 if (type
== GL_COLOR
) {
1116 /* alternate path using get/put_tile() */
1117 GLfloat
*buf
= (GLfloat
*) _mesa_malloc(width
* height
* 4 * sizeof(GLfloat
));
1119 pipe_get_tile_rgba(ptRead
, 0, 0, width
, height
, buf
);
1120 pipe_put_tile_rgba(ptTex
, 0, 0, width
, height
, buf
);
1126 GLuint
*buf
= (GLuint
*) _mesa_malloc(width
* height
* sizeof(GLuint
));
1127 pipe_get_tile_z(ptRead
, 0, 0, width
, height
, buf
);
1128 pipe_put_tile_z(ptTex
, 0, 0, width
, height
, buf
);
1132 screen
->tex_transfer_destroy(ptRead
);
1133 screen
->tex_transfer_destroy(ptTex
);
1136 /* draw textured quad */
1137 draw_textured_quad(ctx
, dstx
, dsty
, ctx
->Current
.RasterPos
[2],
1138 width
, height
, ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
1139 pt
, stvp
, stfp
, color
, GL_TRUE
);
1141 pipe_texture_reference(&pt
, NULL
);
1146 void st_init_drawpixels_functions(struct dd_function_table
*functions
)
1148 functions
->DrawPixels
= st_DrawPixels
;
1149 functions
->CopyPixels
= st_CopyPixels
;
1154 st_destroy_drawpix(struct st_context
*st
)
1156 st_reference_fragprog(st
, &st
->drawpix
.z_shader
, NULL
);
1157 st_reference_fragprog(st
, &st
->pixel_xfer
.combined_prog
, NULL
);
1158 st_reference_vertprog(st
, &st
->drawpix
.vert_shaders
[0], NULL
);
1159 st_reference_vertprog(st
, &st
->drawpix
.vert_shaders
[1], NULL
);