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/format_pack.h"
37 #include "main/macros.h"
38 #include "main/mtypes.h"
39 #include "main/pack.h"
41 #include "main/readpix.h"
42 #include "main/texformat.h"
43 #include "main/teximage.h"
44 #include "main/texstore.h"
45 #include "main/glformats.h"
46 #include "program/program.h"
47 #include "program/prog_print.h"
48 #include "program/prog_instruction.h"
51 #include "st_atom_constbuf.h"
52 #include "st_cb_drawpixels.h"
53 #include "st_cb_readpixels.h"
54 #include "st_cb_fbo.h"
55 #include "st_context.h"
57 #include "st_format.h"
58 #include "st_program.h"
59 #include "st_texture.h"
61 #include "pipe/p_context.h"
62 #include "pipe/p_defines.h"
63 #include "tgsi/tgsi_ureg.h"
64 #include "util/u_draw_quad.h"
65 #include "util/u_format.h"
66 #include "util/u_inlines.h"
67 #include "util/u_math.h"
68 #include "util/u_tile.h"
69 #include "util/u_upload_mgr.h"
70 #include "cso_cache/cso_context.h"
74 * Check if the given program is:
75 * 0: MOVE result.color, fragment.color;
79 is_passthrough_program(const struct gl_fragment_program
*prog
)
81 if (prog
->Base
.NumInstructions
== 2) {
82 const struct prog_instruction
*inst
= prog
->Base
.Instructions
;
83 if (inst
[0].Opcode
== OPCODE_MOV
&&
84 inst
[1].Opcode
== OPCODE_END
&&
85 inst
[0].DstReg
.File
== PROGRAM_OUTPUT
&&
86 inst
[0].DstReg
.Index
== FRAG_RESULT_COLOR
&&
87 inst
[0].DstReg
.WriteMask
== WRITEMASK_XYZW
&&
88 inst
[0].SrcReg
[0].File
== PROGRAM_INPUT
&&
89 inst
[0].SrcReg
[0].Index
== VARYING_SLOT_COL0
&&
90 inst
[0].SrcReg
[0].Swizzle
== SWIZZLE_XYZW
) {
99 * Returns a fragment program which implements the current pixel transfer ops.
101 static struct gl_fragment_program
*
102 get_glsl_pixel_transfer_program(struct st_context
*st
,
103 struct st_fragment_program
*orig
)
105 int pixelMaps
= 0, scaleAndBias
= 0;
106 struct gl_context
*ctx
= st
->ctx
;
107 struct st_fragment_program
*fp
= (struct st_fragment_program
*)
108 ctx
->Driver
.NewProgram(ctx
, GL_FRAGMENT_PROGRAM_ARB
, 0);
113 if (ctx
->Pixel
.RedBias
!= 0.0 || ctx
->Pixel
.RedScale
!= 1.0 ||
114 ctx
->Pixel
.GreenBias
!= 0.0 || ctx
->Pixel
.GreenScale
!= 1.0 ||
115 ctx
->Pixel
.BlueBias
!= 0.0 || ctx
->Pixel
.BlueScale
!= 1.0 ||
116 ctx
->Pixel
.AlphaBias
!= 0.0 || ctx
->Pixel
.AlphaScale
!= 1.0) {
120 pixelMaps
= ctx
->Pixel
.MapColorFlag
;
123 /* create the colormap/texture now if not already done */
124 if (!st
->pixel_xfer
.pixelmap_texture
) {
125 st
->pixel_xfer
.pixelmap_texture
= st_create_color_map_texture(ctx
);
126 st
->pixel_xfer
.pixelmap_sampler_view
=
127 st_create_texture_sampler_view(st
->pipe
,
128 st
->pixel_xfer
.pixelmap_texture
);
132 get_pixel_transfer_visitor(fp
, orig
->glsl_to_tgsi
,
133 scaleAndBias
, pixelMaps
);
140 * Make fragment shader for glDraw/CopyPixels. This shader is made
141 * by combining the pixel transfer shader with the user-defined shader.
142 * \param fpIn the current/incoming fragment program
143 * \param fpOut returns the combined fragment program
146 st_make_drawpix_fragment_program(struct st_context
*st
,
147 struct gl_fragment_program
*fpIn
,
148 struct gl_fragment_program
**fpOut
)
150 struct gl_program
*newProg
;
151 struct st_fragment_program
*stfp
= (struct st_fragment_program
*) fpIn
;
153 if (is_passthrough_program(fpIn
)) {
154 newProg
= (struct gl_program
*) _mesa_clone_fragment_program(st
->ctx
,
155 &st
->pixel_xfer
.program
->Base
);
157 else if (stfp
->glsl_to_tgsi
!= NULL
) {
158 newProg
= (struct gl_program
*) get_glsl_pixel_transfer_program(st
, stfp
);
163 printf("Base program:\n");
164 _mesa_print_program(&fpIn
->Base
);
165 printf("DrawPix program:\n");
166 _mesa_print_program(&st
->pixel_xfer
.program
->Base
.Base
);
168 newProg
= _mesa_combine_programs(st
->ctx
,
169 &st
->pixel_xfer
.program
->Base
.Base
,
175 printf("Combined DrawPixels program:\n");
176 _mesa_print_program(newProg
);
177 printf("InputsRead: 0x%x\n", newProg
->InputsRead
);
178 printf("OutputsWritten: 0x%x\n", newProg
->OutputsWritten
);
179 _mesa_print_parameter_list(newProg
->Parameters
);
182 *fpOut
= (struct gl_fragment_program
*) newProg
;
187 * Create fragment program that does a TEX() instruction to get a Z and/or
188 * stencil value value, then writes to FRAG_RESULT_DEPTH/FRAG_RESULT_STENCIL.
189 * Used for glDrawPixels(GL_DEPTH_COMPONENT / GL_STENCIL_INDEX).
190 * Pass fragment color through as-is.
191 * \return pointer to the gl_fragment program
193 struct gl_fragment_program
*
194 st_make_drawpix_z_stencil_program(struct st_context
*st
,
195 GLboolean write_depth
,
196 GLboolean write_stencil
)
198 struct gl_context
*ctx
= st
->ctx
;
199 struct gl_program
*p
;
200 struct gl_fragment_program
*fp
;
202 const GLuint shaderIndex
= write_depth
* 2 + write_stencil
;
204 assert(shaderIndex
< Elements(st
->drawpix
.shaders
));
206 if (st
->drawpix
.shaders
[shaderIndex
]) {
207 /* already have the proper shader */
208 return st
->drawpix
.shaders
[shaderIndex
];
214 p
= ctx
->Driver
.NewProgram(ctx
, GL_FRAGMENT_PROGRAM_ARB
, 0);
218 p
->NumInstructions
= write_depth
? 3 : 1;
219 p
->NumInstructions
+= write_stencil
? 1 : 0;
221 p
->Instructions
= _mesa_alloc_instructions(p
->NumInstructions
);
222 if (!p
->Instructions
) {
223 ctx
->Driver
.DeleteProgram(ctx
, p
);
226 _mesa_init_instructions(p
->Instructions
, p
->NumInstructions
);
229 /* TEX result.depth, fragment.texcoord[0], texture[0], 2D; */
230 p
->Instructions
[ic
].Opcode
= OPCODE_TEX
;
231 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
232 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_DEPTH
;
233 p
->Instructions
[ic
].DstReg
.WriteMask
= WRITEMASK_Z
;
234 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
235 p
->Instructions
[ic
].SrcReg
[0].Index
= VARYING_SLOT_TEX0
;
236 p
->Instructions
[ic
].TexSrcUnit
= 0;
237 p
->Instructions
[ic
].TexSrcTarget
= TEXTURE_2D_INDEX
;
239 /* MOV result.color, fragment.color; */
240 p
->Instructions
[ic
].Opcode
= OPCODE_MOV
;
241 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
242 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_COLOR
;
243 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
244 p
->Instructions
[ic
].SrcReg
[0].Index
= VARYING_SLOT_COL0
;
249 /* TEX result.stencil, fragment.texcoord[0], texture[0], 2D; */
250 p
->Instructions
[ic
].Opcode
= OPCODE_TEX
;
251 p
->Instructions
[ic
].DstReg
.File
= PROGRAM_OUTPUT
;
252 p
->Instructions
[ic
].DstReg
.Index
= FRAG_RESULT_STENCIL
;
253 p
->Instructions
[ic
].DstReg
.WriteMask
= WRITEMASK_Y
;
254 p
->Instructions
[ic
].SrcReg
[0].File
= PROGRAM_INPUT
;
255 p
->Instructions
[ic
].SrcReg
[0].Index
= VARYING_SLOT_TEX0
;
256 p
->Instructions
[ic
].TexSrcUnit
= 1;
257 p
->Instructions
[ic
].TexSrcTarget
= TEXTURE_2D_INDEX
;
262 p
->Instructions
[ic
++].Opcode
= OPCODE_END
;
264 assert(ic
== p
->NumInstructions
);
266 p
->InputsRead
= VARYING_BIT_TEX0
| VARYING_BIT_COL0
;
267 p
->OutputsWritten
= 0;
269 p
->OutputsWritten
|= BITFIELD64_BIT(FRAG_RESULT_DEPTH
);
270 p
->OutputsWritten
|= BITFIELD64_BIT(FRAG_RESULT_COLOR
);
273 p
->OutputsWritten
|= BITFIELD64_BIT(FRAG_RESULT_STENCIL
);
275 p
->SamplersUsed
= 0x1; /* sampler 0 (bit 0) is used */
277 p
->SamplersUsed
|= 1 << 1;
279 fp
= (struct gl_fragment_program
*) p
;
281 /* save the new shader */
282 st
->drawpix
.shaders
[shaderIndex
] = fp
;
289 * Create a simple vertex shader that just passes through the
290 * vertex position and texcoord (and optionally, color).
293 make_passthrough_vertex_shader(struct st_context
*st
,
296 const unsigned texcoord_semantic
= st
->needs_texcoord_semantic
?
297 TGSI_SEMANTIC_TEXCOORD
: TGSI_SEMANTIC_GENERIC
;
299 if (!st
->drawpix
.vert_shaders
[passColor
]) {
300 struct ureg_program
*ureg
= ureg_create( TGSI_PROCESSOR_VERTEX
);
305 /* MOV result.pos, vertex.pos; */
307 ureg_DECL_output( ureg
, TGSI_SEMANTIC_POSITION
, 0 ),
308 ureg_DECL_vs_input( ureg
, 0 ));
310 /* MOV result.texcoord0, vertex.attr[1]; */
312 ureg_DECL_output( ureg
, texcoord_semantic
, 0 ),
313 ureg_DECL_vs_input( ureg
, 1 ));
316 /* MOV result.color0, vertex.attr[2]; */
318 ureg_DECL_output( ureg
, TGSI_SEMANTIC_COLOR
, 0 ),
319 ureg_DECL_vs_input( ureg
, 2 ));
324 st
->drawpix
.vert_shaders
[passColor
] =
325 ureg_create_shader_and_destroy( ureg
, st
->pipe
);
328 return st
->drawpix
.vert_shaders
[passColor
];
333 * Return a texture internalFormat for drawing/copying an image
334 * of the given format and type.
337 internal_format(struct gl_context
*ctx
, GLenum format
, GLenum type
)
340 case GL_DEPTH_COMPONENT
:
342 case GL_UNSIGNED_SHORT
:
343 return GL_DEPTH_COMPONENT16
;
345 case GL_UNSIGNED_INT
:
346 return GL_DEPTH_COMPONENT32
;
349 if (ctx
->Extensions
.ARB_depth_buffer_float
)
350 return GL_DEPTH_COMPONENT32F
;
352 return GL_DEPTH_COMPONENT
;
355 return GL_DEPTH_COMPONENT
;
358 case GL_DEPTH_STENCIL
:
360 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
361 return GL_DEPTH32F_STENCIL8
;
363 case GL_UNSIGNED_INT_24_8
:
365 return GL_DEPTH24_STENCIL8
;
368 case GL_STENCIL_INDEX
:
369 return GL_STENCIL_INDEX
;
372 if (_mesa_is_enum_format_integer(format
)) {
376 case GL_UNSIGNED_BYTE
:
380 case GL_UNSIGNED_SHORT
:
384 case GL_UNSIGNED_INT
:
387 assert(0 && "Unexpected type in internal_format()");
388 return GL_RGBA_INTEGER
;
393 case GL_UNSIGNED_BYTE
:
394 case GL_UNSIGNED_INT_8_8_8_8
:
395 case GL_UNSIGNED_INT_8_8_8_8_REV
:
399 case GL_UNSIGNED_BYTE_3_3_2
:
400 case GL_UNSIGNED_BYTE_2_3_3_REV
:
403 case GL_UNSIGNED_SHORT_4_4_4_4
:
404 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
407 case GL_UNSIGNED_SHORT_5_6_5
:
408 case GL_UNSIGNED_SHORT_5_6_5_REV
:
411 case GL_UNSIGNED_SHORT_5_5_5_1
:
412 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
415 case GL_UNSIGNED_INT_10_10_10_2
:
416 case GL_UNSIGNED_INT_2_10_10_10_REV
:
419 case GL_UNSIGNED_SHORT
:
420 case GL_UNSIGNED_INT
:
425 ctx
->Extensions
.EXT_texture_snorm
? GL_RGBA8_SNORM
: GL_RGBA8
;
430 ctx
->Extensions
.EXT_texture_snorm
? GL_RGBA16_SNORM
: GL_RGBA16
;
432 case GL_HALF_FLOAT_ARB
:
434 ctx
->Extensions
.ARB_texture_float
? GL_RGBA16F
:
435 ctx
->Extensions
.EXT_texture_snorm
? GL_RGBA16_SNORM
: GL_RGBA16
;
440 ctx
->Extensions
.ARB_texture_float
? GL_RGBA32F
:
441 ctx
->Extensions
.EXT_texture_snorm
? GL_RGBA16_SNORM
: GL_RGBA16
;
443 case GL_UNSIGNED_INT_5_9_9_9_REV
:
444 assert(ctx
->Extensions
.EXT_texture_shared_exponent
);
447 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
448 assert(ctx
->Extensions
.EXT_packed_float
);
449 return GL_R11F_G11F_B10F
;
457 * Create a temporary texture to hold an image of the given size.
458 * If width, height are not POT and the driver only handles POT textures,
459 * allocate the next larger size of texture that is POT.
461 static struct pipe_resource
*
462 alloc_texture(struct st_context
*st
, GLsizei width
, GLsizei height
,
463 enum pipe_format texFormat
, unsigned bind
)
465 struct pipe_resource
*pt
;
467 pt
= st_texture_create(st
, st
->internal_target
, texFormat
, 0,
468 width
, height
, 1, 1, 0, bind
);
475 * Make texture containing an image for glDrawPixels image.
476 * If 'pixels' is NULL, leave the texture image data undefined.
478 static struct pipe_resource
*
479 make_texture(struct st_context
*st
,
480 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
481 const struct gl_pixelstore_attrib
*unpack
,
482 const GLvoid
*pixels
)
484 struct gl_context
*ctx
= st
->ctx
;
485 struct pipe_context
*pipe
= st
->pipe
;
487 struct pipe_resource
*pt
;
488 enum pipe_format pipeFormat
;
489 GLenum baseInternalFormat
;
491 /* Choose a pixel format for the temp texture which will hold the
494 pipeFormat
= st_choose_matching_format(pipe
->screen
, PIPE_BIND_SAMPLER_VIEW
,
495 format
, type
, unpack
->SwapBytes
);
497 if (pipeFormat
!= PIPE_FORMAT_NONE
) {
498 mformat
= st_pipe_format_to_mesa_format(pipeFormat
);
499 baseInternalFormat
= _mesa_get_format_base_format(mformat
);
502 /* Use the generic approach. */
503 GLenum intFormat
= internal_format(ctx
, format
, type
);
505 baseInternalFormat
= _mesa_base_tex_format(ctx
, intFormat
);
506 pipeFormat
= st_choose_format(st
, intFormat
, format
, type
,
507 PIPE_TEXTURE_2D
, 0, PIPE_BIND_SAMPLER_VIEW
,
509 assert(pipeFormat
!= PIPE_FORMAT_NONE
);
510 mformat
= st_pipe_format_to_mesa_format(pipeFormat
);
513 pixels
= _mesa_map_pbo_source(ctx
, unpack
, pixels
);
517 /* alloc temporary texture */
518 pt
= alloc_texture(st
, width
, height
, pipeFormat
, PIPE_BIND_SAMPLER_VIEW
);
520 _mesa_unmap_pbo_source(ctx
, unpack
);
525 struct pipe_transfer
*transfer
;
528 const GLbitfield imageTransferStateSave
= ctx
->_ImageTransferState
;
530 /* we'll do pixel transfer in a fragment shader */
531 ctx
->_ImageTransferState
= 0x0;
533 /* map texture transfer */
534 dest
= pipe_transfer_map(pipe
, pt
, 0, 0,
535 PIPE_TRANSFER_WRITE
, 0, 0,
536 width
, height
, &transfer
);
539 /* Put image into texture transfer.
540 * Note that the image is actually going to be upside down in
541 * the texture. We deal with that with texcoords.
543 success
= _mesa_texstore(ctx
, 2, /* dims */
544 baseInternalFormat
, /* baseInternalFormat */
545 mformat
, /* gl_format */
546 transfer
->stride
, /* dstRowStride, bytes */
547 &dest
, /* destSlices */
548 width
, height
, 1, /* size */
549 format
, type
, /* src format/type */
550 pixels
, /* data source */
554 pipe_transfer_unmap(pipe
, transfer
);
559 ctx
->_ImageTransferState
= imageTransferStateSave
;
562 _mesa_unmap_pbo_source(ctx
, unpack
);
569 * Draw quad with texcoords and optional color.
570 * Coords are gallium window coords with y=0=top.
571 * \param color may be null
572 * \param invertTex if true, flip texcoords vertically
575 draw_quad(struct gl_context
*ctx
, GLfloat x0
, GLfloat y0
, GLfloat z
,
576 GLfloat x1
, GLfloat y1
, const GLfloat
*color
,
577 GLboolean invertTex
, GLfloat maxXcoord
, GLfloat maxYcoord
)
579 struct st_context
*st
= st_context(ctx
);
580 struct pipe_context
*pipe
= st
->pipe
;
581 GLfloat (*verts
)[3][4]; /* four verts, three attribs, XYZW */
582 struct pipe_resource
*buf
= NULL
;
585 if (u_upload_alloc(st
->uploader
, 0, 4 * sizeof(verts
[0]), &offset
,
586 &buf
, (void **) &verts
) != PIPE_OK
) {
590 /* setup vertex data */
592 const struct gl_framebuffer
*fb
= st
->ctx
->DrawBuffer
;
593 const GLfloat fb_width
= (GLfloat
) fb
->Width
;
594 const GLfloat fb_height
= (GLfloat
) fb
->Height
;
595 const GLfloat clip_x0
= x0
/ fb_width
* 2.0f
- 1.0f
;
596 const GLfloat clip_y0
= y0
/ fb_height
* 2.0f
- 1.0f
;
597 const GLfloat clip_x1
= x1
/ fb_width
* 2.0f
- 1.0f
;
598 const GLfloat clip_y1
= y1
/ fb_height
* 2.0f
- 1.0f
;
599 const GLfloat sLeft
= 0.0f
, sRight
= maxXcoord
;
600 const GLfloat tTop
= invertTex
? maxYcoord
: 0.0f
;
601 const GLfloat tBot
= invertTex
? 0.0f
: maxYcoord
;
605 verts
[0][0][0] = clip_x0
; /* v[0].attr[0].x */
606 verts
[0][0][1] = clip_y0
; /* v[0].attr[0].y */
609 verts
[1][0][0] = clip_x1
;
610 verts
[1][0][1] = clip_y0
;
613 verts
[2][0][0] = clip_x1
;
614 verts
[2][0][1] = clip_y1
;
617 verts
[3][0][0] = clip_x0
;
618 verts
[3][0][1] = clip_y1
;
620 verts
[0][1][0] = sLeft
; /* v[0].attr[1].S */
621 verts
[0][1][1] = tTop
; /* v[0].attr[1].T */
622 verts
[1][1][0] = sRight
;
623 verts
[1][1][1] = tTop
;
624 verts
[2][1][0] = sRight
;
625 verts
[2][1][1] = tBot
;
626 verts
[3][1][0] = sLeft
;
627 verts
[3][1][1] = tBot
;
629 /* same for all verts: */
631 for (i
= 0; i
< 4; i
++) {
632 verts
[i
][0][2] = z
; /* v[i].attr[0].z */
633 verts
[i
][0][3] = 1.0f
; /* v[i].attr[0].w */
634 verts
[i
][2][0] = color
[0]; /* v[i].attr[2].r */
635 verts
[i
][2][1] = color
[1]; /* v[i].attr[2].g */
636 verts
[i
][2][2] = color
[2]; /* v[i].attr[2].b */
637 verts
[i
][2][3] = color
[3]; /* v[i].attr[2].a */
638 verts
[i
][1][2] = 0.0f
; /* v[i].attr[1].R */
639 verts
[i
][1][3] = 1.0f
; /* v[i].attr[1].Q */
643 for (i
= 0; i
< 4; i
++) {
644 verts
[i
][0][2] = z
; /*Z*/
645 verts
[i
][0][3] = 1.0f
; /*W*/
646 verts
[i
][1][2] = 0.0f
; /*R*/
647 verts
[i
][1][3] = 1.0f
; /*Q*/
652 u_upload_unmap(st
->uploader
);
653 util_draw_vertex_buffer(pipe
, st
->cso_context
, buf
,
654 cso_get_aux_vertex_buffer_slot(st
->cso_context
),
658 3); /* attribs/vert */
659 pipe_resource_reference(&buf
, NULL
);
665 draw_textured_quad(struct gl_context
*ctx
, GLint x
, GLint y
, GLfloat z
,
666 GLsizei width
, GLsizei height
,
667 GLfloat zoomX
, GLfloat zoomY
,
668 struct pipe_sampler_view
**sv
,
669 int num_sampler_view
,
672 const GLfloat
*color
,
674 GLboolean write_depth
, GLboolean write_stencil
)
676 struct st_context
*st
= st_context(ctx
);
677 struct pipe_context
*pipe
= st
->pipe
;
678 struct cso_context
*cso
= st
->cso_context
;
679 GLfloat x0
, y0
, x1
, y1
;
681 boolean normalized
= sv
[0]->texture
->target
!= PIPE_TEXTURE_RECT
;
684 /* XXX if DrawPixels image is larger than max texture size, break
687 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
,
688 PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
689 assert(width
<= maxSize
);
690 assert(height
<= maxSize
);
692 cso_save_rasterizer(cso
);
693 cso_save_viewport(cso
);
694 cso_save_samplers(cso
, PIPE_SHADER_FRAGMENT
);
695 cso_save_sampler_views(cso
, PIPE_SHADER_FRAGMENT
);
696 cso_save_fragment_shader(cso
);
697 cso_save_stream_outputs(cso
);
698 cso_save_vertex_shader(cso
);
699 cso_save_geometry_shader(cso
);
700 cso_save_vertex_elements(cso
);
701 cso_save_aux_vertex_buffer_slot(cso
);
703 cso_save_depth_stencil_alpha(cso
);
707 /* rasterizer state: just scissor */
709 struct pipe_rasterizer_state rasterizer
;
710 memset(&rasterizer
, 0, sizeof(rasterizer
));
711 rasterizer
.clamp_fragment_color
= !st
->clamp_frag_color_in_shader
&&
712 ctx
->Color
._ClampFragmentColor
;
713 rasterizer
.half_pixel_center
= 1;
714 rasterizer
.bottom_edge_rule
= 1;
715 rasterizer
.depth_clip
= !ctx
->Transform
.DepthClamp
;
716 rasterizer
.scissor
= ctx
->Scissor
.Enabled
;
717 cso_set_rasterizer(cso
, &rasterizer
);
721 /* Stencil writing bypasses the normal fragment pipeline to
722 * disable color writing and set stencil test to always pass.
724 struct pipe_depth_stencil_alpha_state dsa
;
725 struct pipe_blend_state blend
;
728 memset(&dsa
, 0, sizeof(dsa
));
729 dsa
.stencil
[0].enabled
= 1;
730 dsa
.stencil
[0].func
= PIPE_FUNC_ALWAYS
;
731 dsa
.stencil
[0].writemask
= ctx
->Stencil
.WriteMask
[0] & 0xff;
732 dsa
.stencil
[0].zpass_op
= PIPE_STENCIL_OP_REPLACE
;
734 /* writing depth+stencil: depth test always passes */
735 dsa
.depth
.enabled
= 1;
736 dsa
.depth
.writemask
= ctx
->Depth
.Mask
;
737 dsa
.depth
.func
= PIPE_FUNC_ALWAYS
;
739 cso_set_depth_stencil_alpha(cso
, &dsa
);
741 /* blend (colormask) */
742 memset(&blend
, 0, sizeof(blend
));
743 cso_set_blend(cso
, &blend
);
746 /* fragment shader state: TEX lookup program */
747 cso_set_fragment_shader_handle(cso
, driver_fp
);
749 /* vertex shader state: position + texcoord pass-through */
750 cso_set_vertex_shader_handle(cso
, driver_vp
);
752 /* geometry shader state: disabled */
753 cso_set_geometry_shader_handle(cso
, NULL
);
755 /* texture sampling state: */
757 struct pipe_sampler_state sampler
;
758 memset(&sampler
, 0, sizeof(sampler
));
759 sampler
.wrap_s
= PIPE_TEX_WRAP_CLAMP
;
760 sampler
.wrap_t
= PIPE_TEX_WRAP_CLAMP
;
761 sampler
.wrap_r
= PIPE_TEX_WRAP_CLAMP
;
762 sampler
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
763 sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
764 sampler
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
765 sampler
.normalized_coords
= normalized
;
767 cso_single_sampler(cso
, PIPE_SHADER_FRAGMENT
, 0, &sampler
);
768 if (num_sampler_view
> 1) {
769 cso_single_sampler(cso
, PIPE_SHADER_FRAGMENT
, 1, &sampler
);
771 cso_single_sampler_done(cso
, PIPE_SHADER_FRAGMENT
);
774 /* viewport state: viewport matching window dims */
776 const float w
= (float) ctx
->DrawBuffer
->Width
;
777 const float h
= (float) ctx
->DrawBuffer
->Height
;
778 struct pipe_viewport_state vp
;
779 vp
.scale
[0] = 0.5f
* w
;
780 vp
.scale
[1] = -0.5f
* h
;
783 vp
.translate
[0] = 0.5f
* w
;
784 vp
.translate
[1] = 0.5f
* h
;
785 vp
.translate
[2] = 0.5f
;
786 vp
.translate
[3] = 0.0f
;
787 cso_set_viewport(cso
, &vp
);
790 cso_set_vertex_elements(cso
, 3, st
->velems_util_draw
);
791 cso_set_stream_outputs(st
->cso_context
, 0, NULL
, 0);
794 cso_set_sampler_views(cso
, PIPE_SHADER_FRAGMENT
, num_sampler_view
, sv
);
796 /* Compute Gallium window coords (y=0=top) with pixel zoom.
797 * Recall that these coords are transformed by the current
798 * vertex shader and viewport transformation.
800 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_BOTTOM
) {
801 y
= ctx
->DrawBuffer
->Height
- (int) (y
+ height
* ctx
->Pixel
.ZoomY
);
802 invertTex
= !invertTex
;
806 x1
= x
+ width
* ctx
->Pixel
.ZoomX
;
808 y1
= y
+ height
* ctx
->Pixel
.ZoomY
;
810 /* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
813 draw_quad(ctx
, x0
, y0
, z
, x1
, y1
, color
, invertTex
,
814 normalized
? ((GLfloat
) width
/ sv
[0]->texture
->width0
) : (GLfloat
)width
,
815 normalized
? ((GLfloat
) height
/ sv
[0]->texture
->height0
) : (GLfloat
)height
);
818 cso_restore_rasterizer(cso
);
819 cso_restore_viewport(cso
);
820 cso_restore_samplers(cso
, PIPE_SHADER_FRAGMENT
);
821 cso_restore_sampler_views(cso
, PIPE_SHADER_FRAGMENT
);
822 cso_restore_fragment_shader(cso
);
823 cso_restore_vertex_shader(cso
);
824 cso_restore_geometry_shader(cso
);
825 cso_restore_vertex_elements(cso
);
826 cso_restore_aux_vertex_buffer_slot(cso
);
827 cso_restore_stream_outputs(cso
);
829 cso_restore_depth_stencil_alpha(cso
);
830 cso_restore_blend(cso
);
836 * Software fallback to do glDrawPixels(GL_STENCIL_INDEX) when we
837 * can't use a fragment shader to write stencil values.
840 draw_stencil_pixels(struct gl_context
*ctx
, GLint x
, GLint y
,
841 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
842 const struct gl_pixelstore_attrib
*unpack
,
843 const GLvoid
*pixels
)
845 struct st_context
*st
= st_context(ctx
);
846 struct pipe_context
*pipe
= st
->pipe
;
847 struct st_renderbuffer
*strb
;
848 enum pipe_transfer_usage usage
;
849 struct pipe_transfer
*pt
;
850 const GLboolean zoom
= ctx
->Pixel
.ZoomX
!= 1.0 || ctx
->Pixel
.ZoomY
!= 1.0;
852 struct gl_pixelstore_attrib clippedUnpack
= *unpack
;
857 if (!_mesa_clip_drawpixels(ctx
, &x
, &y
, &width
, &height
,
859 /* totally clipped */
864 strb
= st_renderbuffer(ctx
->DrawBuffer
->
865 Attachment
[BUFFER_STENCIL
].Renderbuffer
);
867 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
868 y
= ctx
->DrawBuffer
->Height
- y
- height
;
871 if (format
== GL_STENCIL_INDEX
&&
872 _mesa_is_format_packed_depth_stencil(strb
->Base
.Format
)) {
873 /* writing stencil to a combined depth+stencil buffer */
874 usage
= PIPE_TRANSFER_READ_WRITE
;
877 usage
= PIPE_TRANSFER_WRITE
;
880 stmap
= pipe_transfer_map(pipe
, strb
->texture
,
881 strb
->rtt_level
, strb
->rtt_face
+ strb
->rtt_slice
,
885 pixels
= _mesa_map_pbo_source(ctx
, &clippedUnpack
, pixels
);
888 sValues
= malloc(width
* sizeof(GLubyte
));
889 zValues
= malloc(width
* sizeof(GLuint
));
891 if (sValues
&& zValues
) {
893 for (row
= 0; row
< height
; row
++) {
894 GLfloat
*zValuesFloat
= (GLfloat
*)zValues
;
895 GLenum destType
= GL_UNSIGNED_BYTE
;
896 const GLvoid
*source
= _mesa_image_address2d(&clippedUnpack
, pixels
,
900 _mesa_unpack_stencil_span(ctx
, width
, destType
, sValues
,
901 type
, source
, &clippedUnpack
,
902 ctx
->_ImageTransferState
);
904 if (format
== GL_DEPTH_STENCIL
) {
906 pt
->resource
->format
== PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
?
907 GL_FLOAT
: GL_UNSIGNED_INT
;
909 _mesa_unpack_depth_span(ctx
, width
, ztype
, zValues
,
910 (1 << 24) - 1, type
, source
,
915 _mesa_problem(ctx
, "Gallium glDrawPixels(GL_STENCIL) with "
916 "zoom not complete");
922 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
923 spanY
= height
- row
- 1;
929 /* now pack the stencil (and Z) values in the dest format */
930 switch (pt
->resource
->format
) {
931 case PIPE_FORMAT_S8_UINT
:
933 ubyte
*dest
= stmap
+ spanY
* pt
->stride
;
934 assert(usage
== PIPE_TRANSFER_WRITE
);
935 memcpy(dest
, sValues
, width
);
938 case PIPE_FORMAT_Z24_UNORM_S8_UINT
:
939 if (format
== GL_DEPTH_STENCIL
) {
940 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
942 assert(usage
== PIPE_TRANSFER_WRITE
);
943 for (k
= 0; k
< width
; k
++) {
944 dest
[k
] = zValues
[k
] | (sValues
[k
] << 24);
948 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
950 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
951 for (k
= 0; k
< width
; k
++) {
952 dest
[k
] = (dest
[k
] & 0xffffff) | (sValues
[k
] << 24);
956 case PIPE_FORMAT_S8_UINT_Z24_UNORM
:
957 if (format
== GL_DEPTH_STENCIL
) {
958 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
960 assert(usage
== PIPE_TRANSFER_WRITE
);
961 for (k
= 0; k
< width
; k
++) {
962 dest
[k
] = (zValues
[k
] << 8) | (sValues
[k
] & 0xff);
966 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
968 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
969 for (k
= 0; k
< width
; k
++) {
970 dest
[k
] = (dest
[k
] & 0xffffff00) | (sValues
[k
] & 0xff);
974 case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
:
975 if (format
== GL_DEPTH_STENCIL
) {
976 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
977 GLfloat
*destf
= (GLfloat
*)dest
;
979 assert(usage
== PIPE_TRANSFER_WRITE
);
980 for (k
= 0; k
< width
; k
++) {
981 destf
[k
*2] = zValuesFloat
[k
];
982 dest
[k
*2+1] = sValues
[k
] & 0xff;
986 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
988 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
989 for (k
= 0; k
< width
; k
++) {
990 dest
[k
*2+1] = sValues
[k
] & 0xff;
1001 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDrawPixels()");
1007 _mesa_unmap_pbo_source(ctx
, &clippedUnpack
);
1009 /* unmap the stencil buffer */
1010 pipe_transfer_unmap(pipe
, pt
);
1015 * Get fragment program variant for a glDrawPixels or glCopyPixels
1016 * command for RGBA data.
1018 static struct st_fp_variant
*
1019 get_color_fp_variant(struct st_context
*st
)
1021 struct gl_context
*ctx
= st
->ctx
;
1022 struct st_fp_variant_key key
;
1023 struct st_fp_variant
*fpv
;
1025 memset(&key
, 0, sizeof(key
));
1029 key
.scaleAndBias
= (ctx
->Pixel
.RedBias
!= 0.0 ||
1030 ctx
->Pixel
.RedScale
!= 1.0 ||
1031 ctx
->Pixel
.GreenBias
!= 0.0 ||
1032 ctx
->Pixel
.GreenScale
!= 1.0 ||
1033 ctx
->Pixel
.BlueBias
!= 0.0 ||
1034 ctx
->Pixel
.BlueScale
!= 1.0 ||
1035 ctx
->Pixel
.AlphaBias
!= 0.0 ||
1036 ctx
->Pixel
.AlphaScale
!= 1.0);
1037 key
.pixelMaps
= ctx
->Pixel
.MapColorFlag
;
1038 key
.clamp_color
= st
->clamp_frag_color_in_shader
&&
1039 st
->ctx
->Color
._ClampFragmentColor
;
1041 fpv
= st_get_fp_variant(st
, st
->fp
, &key
);
1048 * Get fragment program variant for a glDrawPixels or glCopyPixels
1049 * command for depth/stencil data.
1051 static struct st_fp_variant
*
1052 get_depth_stencil_fp_variant(struct st_context
*st
, GLboolean write_depth
,
1053 GLboolean write_stencil
)
1055 struct st_fp_variant_key key
;
1056 struct st_fp_variant
*fpv
;
1058 memset(&key
, 0, sizeof(key
));
1062 key
.drawpixels_z
= write_depth
;
1063 key
.drawpixels_stencil
= write_stencil
;
1065 fpv
= st_get_fp_variant(st
, st
->fp
, &key
);
1072 * Clamp glDrawPixels width and height to the maximum texture size.
1075 clamp_size(struct pipe_context
*pipe
, GLsizei
*width
, GLsizei
*height
,
1076 struct gl_pixelstore_attrib
*unpack
)
1079 1 << (pipe
->screen
->get_param(pipe
->screen
,
1080 PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
1082 if (*width
> maxSize
) {
1083 if (unpack
->RowLength
== 0)
1084 unpack
->RowLength
= *width
;
1087 if (*height
> maxSize
) {
1094 * Called via ctx->Driver.DrawPixels()
1097 st_DrawPixels(struct gl_context
*ctx
, GLint x
, GLint y
,
1098 GLsizei width
, GLsizei height
,
1099 GLenum format
, GLenum type
,
1100 const struct gl_pixelstore_attrib
*unpack
, const GLvoid
*pixels
)
1102 void *driver_vp
, *driver_fp
;
1103 struct st_context
*st
= st_context(ctx
);
1104 const GLfloat
*color
;
1105 struct pipe_context
*pipe
= st
->pipe
;
1106 GLboolean write_stencil
= GL_FALSE
, write_depth
= GL_FALSE
;
1107 struct pipe_sampler_view
*sv
[2];
1108 int num_sampler_view
= 1;
1109 struct st_fp_variant
*fpv
;
1110 struct gl_pixelstore_attrib clippedUnpack
;
1112 /* Mesa state should be up to date by now */
1113 assert(ctx
->NewState
== 0x0);
1115 st_validate_state(st
);
1117 /* Limit the size of the glDrawPixels to the max texture size.
1118 * Strictly speaking, that's not correct but since we don't handle
1119 * larger images yet, this is better than crashing.
1121 clippedUnpack
= *unpack
;
1122 unpack
= &clippedUnpack
;
1123 clamp_size(st
->pipe
, &width
, &height
, &clippedUnpack
);
1125 if (format
== GL_DEPTH_STENCIL
)
1126 write_stencil
= write_depth
= GL_TRUE
;
1127 else if (format
== GL_STENCIL_INDEX
)
1128 write_stencil
= GL_TRUE
;
1129 else if (format
== GL_DEPTH_COMPONENT
)
1130 write_depth
= GL_TRUE
;
1132 if (write_stencil
&&
1133 !pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_SHADER_STENCIL_EXPORT
)) {
1134 /* software fallback */
1135 draw_stencil_pixels(ctx
, x
, y
, width
, height
, format
, type
,
1141 * Get vertex/fragment shaders
1143 if (write_depth
|| write_stencil
) {
1144 fpv
= get_depth_stencil_fp_variant(st
, write_depth
, write_stencil
);
1146 driver_fp
= fpv
->driver_shader
;
1148 driver_vp
= make_passthrough_vertex_shader(st
, GL_TRUE
);
1150 color
= ctx
->Current
.RasterColor
;
1153 fpv
= get_color_fp_variant(st
);
1155 driver_fp
= fpv
->driver_shader
;
1157 driver_vp
= make_passthrough_vertex_shader(st
, GL_FALSE
);
1160 if (st
->pixel_xfer
.pixelmap_enabled
) {
1161 sv
[1] = st
->pixel_xfer
.pixelmap_sampler_view
;
1166 /* update fragment program constants */
1167 st_upload_constants(st
, fpv
->parameters
, PIPE_SHADER_FRAGMENT
);
1169 /* draw with textured quad */
1171 struct pipe_resource
*pt
1172 = make_texture(st
, width
, height
, format
, type
, unpack
, pixels
);
1174 sv
[0] = st_create_texture_sampler_view(st
->pipe
, pt
);
1177 /* Create a second sampler view to read stencil.
1178 * The stencil is written using the shader stencil export
1180 if (write_stencil
) {
1181 enum pipe_format stencil_format
=
1182 util_format_stencil_only(pt
->format
);
1184 sv
[1] = st_create_texture_sampler_view_format(st
->pipe
, pt
,
1189 draw_textured_quad(ctx
, x
, y
, ctx
->Current
.RasterPos
[2],
1191 ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
1196 color
, GL_FALSE
, write_depth
, write_stencil
);
1197 pipe_sampler_view_reference(&sv
[0], NULL
);
1198 if (num_sampler_view
> 1)
1199 pipe_sampler_view_reference(&sv
[1], NULL
);
1201 pipe_resource_reference(&pt
, NULL
);
1209 * Software fallback for glCopyPixels(GL_STENCIL).
1212 copy_stencil_pixels(struct gl_context
*ctx
, GLint srcx
, GLint srcy
,
1213 GLsizei width
, GLsizei height
,
1214 GLint dstx
, GLint dsty
)
1216 struct st_renderbuffer
*rbDraw
;
1217 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
1218 enum pipe_transfer_usage usage
;
1219 struct pipe_transfer
*ptDraw
;
1224 buffer
= malloc(width
* height
* sizeof(ubyte
));
1226 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCopyPixels(stencil)");
1230 /* Get the dest renderbuffer */
1231 rbDraw
= st_renderbuffer(ctx
->DrawBuffer
->
1232 Attachment
[BUFFER_STENCIL
].Renderbuffer
);
1234 /* this will do stencil pixel transfer ops */
1235 _mesa_readpixels(ctx
, srcx
, srcy
, width
, height
,
1236 GL_STENCIL_INDEX
, GL_UNSIGNED_BYTE
,
1237 &ctx
->DefaultPacking
, buffer
);
1240 /* debug code: dump stencil values */
1242 for (row
= 0; row
< height
; row
++) {
1243 printf("%3d: ", row
);
1244 for (col
= 0; col
< width
; col
++) {
1245 printf("%02x ", buffer
[col
+ row
* width
]);
1251 if (_mesa_is_format_packed_depth_stencil(rbDraw
->Base
.Format
))
1252 usage
= PIPE_TRANSFER_READ_WRITE
;
1254 usage
= PIPE_TRANSFER_WRITE
;
1256 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
1257 dsty
= rbDraw
->Base
.Height
- dsty
- height
;
1260 assert(util_format_get_blockwidth(rbDraw
->texture
->format
) == 1);
1261 assert(util_format_get_blockheight(rbDraw
->texture
->format
) == 1);
1263 /* map the stencil buffer */
1264 drawMap
= pipe_transfer_map(pipe
,
1267 rbDraw
->rtt_face
+ rbDraw
->rtt_slice
,
1269 width
, height
, &ptDraw
);
1272 /* XXX PixelZoom not handled yet */
1273 for (i
= 0; i
< height
; i
++) {
1280 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
1284 dst
= drawMap
+ y
* ptDraw
->stride
;
1285 src
= buffer
+ i
* width
;
1287 _mesa_pack_ubyte_stencil_row(rbDraw
->Base
.Format
, width
, src
, dst
);
1292 /* unmap the stencil buffer */
1293 pipe_transfer_unmap(pipe
, ptDraw
);
1298 * Return renderbuffer to use for reading color pixels for glCopyPixels
1300 static struct st_renderbuffer
*
1301 st_get_color_read_renderbuffer(struct gl_context
*ctx
)
1303 struct gl_framebuffer
*fb
= ctx
->ReadBuffer
;
1304 struct st_renderbuffer
*strb
=
1305 st_renderbuffer(fb
->_ColorReadBuffer
);
1312 * \return TRUE if two regions overlap, FALSE otherwise
1315 regions_overlap(int srcX0
, int srcY0
,
1316 int srcX1
, int srcY1
,
1317 int dstX0
, int dstY0
,
1318 int dstX1
, int dstY1
)
1320 if (MAX2(srcX0
, srcX1
) < MIN2(dstX0
, dstX1
))
1321 return FALSE
; /* src completely left of dst */
1323 if (MAX2(dstX0
, dstX1
) < MIN2(srcX0
, srcX1
))
1324 return FALSE
; /* dst completely left of src */
1326 if (MAX2(srcY0
, srcY1
) < MIN2(dstY0
, dstY1
))
1327 return FALSE
; /* src completely above dst */
1329 if (MAX2(dstY0
, dstY1
) < MIN2(srcY0
, srcY1
))
1330 return FALSE
; /* dst completely above src */
1332 return TRUE
; /* some overlap */
1337 * Try to do a glCopyPixels for simple cases with a blit by calling
1340 * We can do this when we're copying color pixels (depth/stencil
1341 * eventually) with no pixel zoom, no pixel transfer ops, no
1342 * per-fragment ops, and the src/dest regions don't overlap.
1345 blit_copy_pixels(struct gl_context
*ctx
, GLint srcx
, GLint srcy
,
1346 GLsizei width
, GLsizei height
,
1347 GLint dstx
, GLint dsty
, GLenum type
)
1349 struct st_context
*st
= st_context(ctx
);
1350 struct pipe_context
*pipe
= st
->pipe
;
1351 struct pipe_screen
*screen
= pipe
->screen
;
1352 struct gl_pixelstore_attrib pack
, unpack
;
1353 GLint readX
, readY
, readW
, readH
, drawX
, drawY
, drawW
, drawH
;
1355 if (type
== GL_COLOR
&&
1356 ctx
->Pixel
.ZoomX
== 1.0 &&
1357 ctx
->Pixel
.ZoomY
== 1.0 &&
1358 ctx
->_ImageTransferState
== 0x0 &&
1359 !ctx
->Color
.BlendEnabled
&&
1360 !ctx
->Color
.AlphaEnabled
&&
1362 !ctx
->Fog
.Enabled
&&
1363 !ctx
->Stencil
.Enabled
&&
1364 !ctx
->FragmentProgram
.Enabled
&&
1365 !ctx
->VertexProgram
.Enabled
&&
1366 !ctx
->Shader
.CurrentFragmentProgram
&&
1367 ctx
->DrawBuffer
->_NumColorDrawBuffers
== 1 &&
1368 !ctx
->Query
.CondRenderQuery
&&
1369 !ctx
->Query
.CurrentOcclusionObject
) {
1370 struct st_renderbuffer
*rbRead
, *rbDraw
;
1373 * Clip the read region against the src buffer bounds.
1374 * We'll still allocate a temporary buffer/texture for the original
1375 * src region size but we'll only read the region which is on-screen.
1376 * This may mean that we draw garbage pixels into the dest region, but
1383 pack
= ctx
->DefaultPacking
;
1384 if (!_mesa_clip_readpixels(ctx
, &readX
, &readY
, &readW
, &readH
, &pack
))
1385 return GL_TRUE
; /* all done */
1387 /* clip against dest buffer bounds and scissor box */
1388 drawX
= dstx
+ pack
.SkipPixels
;
1389 drawY
= dsty
+ pack
.SkipRows
;
1391 if (!_mesa_clip_drawpixels(ctx
, &drawX
, &drawY
, &readW
, &readH
, &unpack
))
1392 return GL_TRUE
; /* all done */
1394 readX
= readX
- pack
.SkipPixels
+ unpack
.SkipPixels
;
1395 readY
= readY
- pack
.SkipRows
+ unpack
.SkipRows
;
1400 rbRead
= st_get_color_read_renderbuffer(ctx
);
1401 rbDraw
= st_renderbuffer(ctx
->DrawBuffer
->_ColorDrawBuffers
[0]);
1403 /* Flip src/dst position depending on the orientation of buffers. */
1404 if (st_fb_orientation(ctx
->ReadBuffer
) == Y_0_TOP
) {
1405 readY
= rbRead
->Base
.Height
- readY
;
1409 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
1410 /* We can't flip the destination for pipe->blit, so we only adjust
1411 * its position and flip the source.
1413 drawY
= rbDraw
->Base
.Height
- drawY
- drawH
;
1418 if (rbRead
!= rbDraw
||
1419 !regions_overlap(readX
, readY
, readX
+ readW
, readY
+ readH
,
1420 drawX
, drawY
, drawX
+ drawW
, drawY
+ drawH
)) {
1421 struct pipe_blit_info blit
;
1423 memset(&blit
, 0, sizeof(blit
));
1424 blit
.src
.resource
= rbRead
->texture
;
1425 blit
.src
.level
= rbRead
->rtt_level
;
1426 blit
.src
.format
= rbRead
->texture
->format
;
1427 blit
.src
.box
.x
= readX
;
1428 blit
.src
.box
.y
= readY
;
1429 blit
.src
.box
.z
= rbRead
->rtt_face
+ rbRead
->rtt_slice
;
1430 blit
.src
.box
.width
= readW
;
1431 blit
.src
.box
.height
= readH
;
1432 blit
.src
.box
.depth
= 1;
1433 blit
.dst
.resource
= rbDraw
->texture
;
1434 blit
.dst
.level
= rbDraw
->rtt_level
;
1435 blit
.dst
.format
= rbDraw
->texture
->format
;
1436 blit
.dst
.box
.x
= drawX
;
1437 blit
.dst
.box
.y
= drawY
;
1438 blit
.dst
.box
.z
= rbDraw
->rtt_face
+ rbDraw
->rtt_slice
;
1439 blit
.dst
.box
.width
= drawW
;
1440 blit
.dst
.box
.height
= drawH
;
1441 blit
.dst
.box
.depth
= 1;
1442 blit
.mask
= PIPE_MASK_RGBA
;
1443 blit
.filter
= PIPE_TEX_FILTER_NEAREST
;
1445 if (screen
->is_format_supported(screen
, blit
.src
.format
,
1446 blit
.src
.resource
->target
,
1447 blit
.src
.resource
->nr_samples
,
1448 PIPE_BIND_SAMPLER_VIEW
) &&
1449 screen
->is_format_supported(screen
, blit
.dst
.format
,
1450 blit
.dst
.resource
->target
,
1451 blit
.dst
.resource
->nr_samples
,
1452 PIPE_BIND_RENDER_TARGET
)) {
1453 pipe
->blit(pipe
, &blit
);
1464 st_CopyPixels(struct gl_context
*ctx
, GLint srcx
, GLint srcy
,
1465 GLsizei width
, GLsizei height
,
1466 GLint dstx
, GLint dsty
, GLenum type
)
1468 struct st_context
*st
= st_context(ctx
);
1469 struct pipe_context
*pipe
= st
->pipe
;
1470 struct pipe_screen
*screen
= pipe
->screen
;
1471 struct st_renderbuffer
*rbRead
;
1472 void *driver_vp
, *driver_fp
;
1473 struct pipe_resource
*pt
;
1474 struct pipe_sampler_view
*sv
[2];
1475 int num_sampler_view
= 1;
1477 enum pipe_format srcFormat
;
1479 GLboolean invertTex
= GL_FALSE
;
1480 GLint readX
, readY
, readW
, readH
;
1481 struct gl_pixelstore_attrib pack
= ctx
->DefaultPacking
;
1482 struct st_fp_variant
*fpv
;
1484 st_validate_state(st
);
1486 if (type
== GL_DEPTH_STENCIL
) {
1487 /* XXX make this more efficient */
1488 st_CopyPixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
, GL_STENCIL
);
1489 st_CopyPixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
, GL_DEPTH
);
1493 if (type
== GL_STENCIL
) {
1494 /* can't use texturing to do stencil */
1495 copy_stencil_pixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
);
1499 if (blit_copy_pixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
, type
))
1503 * The subsequent code implements glCopyPixels by copying the source
1504 * pixels into a temporary texture that's then applied to a textured quad.
1505 * When we draw the textured quad, all the usual per-fragment operations
1511 * Get vertex/fragment shaders
1513 if (type
== GL_COLOR
) {
1514 rbRead
= st_get_color_read_renderbuffer(ctx
);
1517 fpv
= get_color_fp_variant(st
);
1518 driver_fp
= fpv
->driver_shader
;
1520 driver_vp
= make_passthrough_vertex_shader(st
, GL_FALSE
);
1522 if (st
->pixel_xfer
.pixelmap_enabled
) {
1523 sv
[1] = st
->pixel_xfer
.pixelmap_sampler_view
;
1528 assert(type
== GL_DEPTH
);
1529 rbRead
= st_renderbuffer(ctx
->ReadBuffer
->
1530 Attachment
[BUFFER_DEPTH
].Renderbuffer
);
1531 color
= ctx
->Current
.Attrib
[VERT_ATTRIB_COLOR0
];
1533 fpv
= get_depth_stencil_fp_variant(st
, GL_TRUE
, GL_FALSE
);
1534 driver_fp
= fpv
->driver_shader
;
1536 driver_vp
= make_passthrough_vertex_shader(st
, GL_TRUE
);
1539 /* update fragment program constants */
1540 st_upload_constants(st
, fpv
->parameters
, PIPE_SHADER_FRAGMENT
);
1542 /* Choose the format for the temporary texture. */
1543 srcFormat
= rbRead
->texture
->format
;
1544 srcBind
= PIPE_BIND_SAMPLER_VIEW
|
1545 (type
== GL_COLOR
? PIPE_BIND_RENDER_TARGET
: PIPE_BIND_DEPTH_STENCIL
);
1547 if (!screen
->is_format_supported(screen
, srcFormat
, st
->internal_target
, 0,
1549 /* srcFormat is non-renderable. Find a compatible renderable format. */
1550 if (type
== GL_DEPTH
) {
1551 srcFormat
= st_choose_format(st
, GL_DEPTH_COMPONENT
, GL_NONE
,
1552 GL_NONE
, st
->internal_target
, 0,
1556 assert(type
== GL_COLOR
);
1558 if (util_format_is_float(srcFormat
)) {
1559 srcFormat
= st_choose_format(st
, GL_RGBA32F
, GL_NONE
,
1560 GL_NONE
, st
->internal_target
, 0,
1563 else if (util_format_is_pure_sint(srcFormat
)) {
1564 srcFormat
= st_choose_format(st
, GL_RGBA32I
, GL_NONE
,
1565 GL_NONE
, st
->internal_target
, 0,
1568 else if (util_format_is_pure_uint(srcFormat
)) {
1569 srcFormat
= st_choose_format(st
, GL_RGBA32UI
, GL_NONE
,
1570 GL_NONE
, st
->internal_target
, 0,
1573 else if (util_format_is_snorm(srcFormat
)) {
1574 srcFormat
= st_choose_format(st
, GL_RGBA16_SNORM
, GL_NONE
,
1575 GL_NONE
, st
->internal_target
, 0,
1579 srcFormat
= st_choose_format(st
, GL_RGBA
, GL_NONE
,
1580 GL_NONE
, st
->internal_target
, 0,
1585 if (srcFormat
== PIPE_FORMAT_NONE
) {
1586 assert(0 && "cannot choose a format for src of CopyPixels");
1591 /* Invert src region if needed */
1592 if (st_fb_orientation(ctx
->ReadBuffer
) == Y_0_TOP
) {
1593 srcy
= ctx
->ReadBuffer
->Height
- srcy
- height
;
1594 invertTex
= !invertTex
;
1597 /* Clip the read region against the src buffer bounds.
1598 * We'll still allocate a temporary buffer/texture for the original
1599 * src region size but we'll only read the region which is on-screen.
1600 * This may mean that we draw garbage pixels into the dest region, but
1607 if (!_mesa_clip_readpixels(ctx
, &readX
, &readY
, &readW
, &readH
, &pack
)) {
1608 /* The source region is completely out of bounds. Do nothing.
1609 * The GL spec says "Results of copies from outside the window,
1610 * or from regions of the window that are not exposed, are
1611 * hardware dependent and undefined."
1616 readW
= MAX2(0, readW
);
1617 readH
= MAX2(0, readH
);
1619 /* Allocate the temporary texture. */
1620 pt
= alloc_texture(st
, width
, height
, srcFormat
, srcBind
);
1624 sv
[0] = st_create_texture_sampler_view(st
->pipe
, pt
);
1626 pipe_resource_reference(&pt
, NULL
);
1630 /* Copy the src region to the temporary texture. */
1632 struct pipe_blit_info blit
;
1634 memset(&blit
, 0, sizeof(blit
));
1635 blit
.src
.resource
= rbRead
->texture
;
1636 blit
.src
.level
= rbRead
->rtt_level
;
1637 blit
.src
.format
= rbRead
->texture
->format
;
1638 blit
.src
.box
.x
= readX
;
1639 blit
.src
.box
.y
= readY
;
1640 blit
.src
.box
.z
= rbRead
->rtt_face
+ rbRead
->rtt_slice
;
1641 blit
.src
.box
.width
= readW
;
1642 blit
.src
.box
.height
= readH
;
1643 blit
.src
.box
.depth
= 1;
1644 blit
.dst
.resource
= pt
;
1646 blit
.dst
.format
= pt
->format
;
1647 blit
.dst
.box
.x
= pack
.SkipPixels
;
1648 blit
.dst
.box
.y
= pack
.SkipRows
;
1650 blit
.dst
.box
.width
= readW
;
1651 blit
.dst
.box
.height
= readH
;
1652 blit
.dst
.box
.depth
= 1;
1653 blit
.mask
= util_format_get_mask(pt
->format
) & ~PIPE_MASK_S
;
1654 blit
.filter
= PIPE_TEX_FILTER_NEAREST
;
1656 pipe
->blit(pipe
, &blit
);
1659 /* OK, the texture 'pt' contains the src image/pixels. Now draw a
1660 * textured quad with that texture.
1662 draw_textured_quad(ctx
, dstx
, dsty
, ctx
->Current
.RasterPos
[2],
1663 width
, height
, ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
1668 color
, invertTex
, GL_FALSE
, GL_FALSE
);
1670 pipe_resource_reference(&pt
, NULL
);
1671 pipe_sampler_view_reference(&sv
[0], NULL
);
1676 void st_init_drawpixels_functions(struct dd_function_table
*functions
)
1678 functions
->DrawPixels
= st_DrawPixels
;
1679 functions
->CopyPixels
= st_CopyPixels
;
1684 st_destroy_drawpix(struct st_context
*st
)
1688 for (i
= 0; i
< Elements(st
->drawpix
.shaders
); i
++) {
1689 if (st
->drawpix
.shaders
[i
])
1690 _mesa_reference_fragprog(st
->ctx
, &st
->drawpix
.shaders
[i
], NULL
);
1693 st_reference_fragprog(st
, &st
->pixel_xfer
.combined_prog
, NULL
);
1694 if (st
->drawpix
.vert_shaders
[0])
1695 cso_delete_vertex_shader(st
->cso_context
, st
->drawpix
.vert_shaders
[0]);
1696 if (st
->drawpix
.vert_shaders
[1])
1697 cso_delete_vertex_shader(st
->cso_context
, st
->drawpix
.vert_shaders
[1]);