1 /**************************************************************************
3 * Copyright 2007 VMware, Inc.
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 VMWARE 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/errors.h"
34 #include "main/imports.h"
35 #include "main/image.h"
36 #include "main/bufferobj.h"
37 #include "main/blit.h"
38 #include "main/format_pack.h"
39 #include "main/framebuffer.h"
40 #include "main/macros.h"
41 #include "main/mtypes.h"
42 #include "main/pack.h"
44 #include "main/readpix.h"
45 #include "main/state.h"
46 #include "main/texformat.h"
47 #include "main/teximage.h"
48 #include "main/texstore.h"
49 #include "main/glformats.h"
50 #include "program/program.h"
51 #include "program/prog_print.h"
52 #include "program/prog_instruction.h"
55 #include "st_atom_constbuf.h"
56 #include "st_cb_bitmap.h"
57 #include "st_cb_drawpixels.h"
58 #include "st_cb_readpixels.h"
59 #include "st_cb_fbo.h"
60 #include "st_context.h"
63 #include "st_format.h"
64 #include "st_program.h"
65 #include "st_sampler_view.h"
66 #include "st_scissor.h"
67 #include "st_texture.h"
71 #include "pipe/p_context.h"
72 #include "pipe/p_defines.h"
73 #include "tgsi/tgsi_ureg.h"
74 #include "util/u_format.h"
75 #include "util/u_inlines.h"
76 #include "util/u_math.h"
77 #include "util/u_simple_shaders.h"
78 #include "util/u_tile.h"
79 #include "cso_cache/cso_context.h"
81 #include "compiler/nir/nir_builder.h"
84 * We have a simple glDrawPixels cache to try to optimize the case where the
85 * same image is drawn over and over again. It basically works as follows:
87 * 1. After we construct a texture map with the image and draw it, we do
88 * not discard the texture. We keep it around, plus we note the
89 * glDrawPixels width, height, format, etc. parameters and keep a copy
90 * of the image in a malloc'd buffer.
92 * 2. On the next glDrawPixels we check if the parameters match the previous
93 * call. If those match, we check if the image matches the previous image
94 * via a memcmp() call. If everything matches, we re-use the previous
95 * texture, thereby avoiding the cost creating a new texture and copying
98 * The effectiveness of this cache depends upon:
99 * 1. If the memcmp() finds a difference, it happens relatively quickly.
100 Hopefully, not just the last pixels differ!
101 * 2. If the memcmp() finds no difference, doing that check is faster than
102 * creating and loading a texture.
105 * 1. We don't support any pixel unpacking parameters.
106 * 2. We don't try to cache images in Pixel Buffer Objects.
107 * 3. Instead of saving the whole image, perhaps some sort of reliable
108 * checksum function could be used instead.
110 #define USE_DRAWPIXELS_CACHE 1
113 sample_via_nir(nir_builder
*b
, nir_variable
*texcoord
,
114 const char *name
, int sampler
)
116 const struct glsl_type
*sampler2D
=
117 glsl_sampler_type(GLSL_SAMPLER_DIM_2D
, false, false, GLSL_TYPE_FLOAT
);
120 nir_variable_create(b
->shader
, nir_var_uniform
, sampler2D
, name
);
121 var
->data
.binding
= sampler
;
122 var
->data
.explicit_binding
= true;
124 nir_deref_instr
*deref
= nir_build_deref_var(b
, var
);
126 nir_tex_instr
*tex
= nir_tex_instr_create(b
->shader
, 3);
127 tex
->op
= nir_texop_tex
;
128 tex
->sampler_dim
= GLSL_SAMPLER_DIM_2D
;
129 tex
->coord_components
= 2;
130 tex
->dest_type
= nir_type_float
;
131 tex
->src
[0].src_type
= nir_tex_src_texture_deref
;
132 tex
->src
[0].src
= nir_src_for_ssa(&deref
->dest
.ssa
);
133 tex
->src
[1].src_type
= nir_tex_src_sampler_deref
;
134 tex
->src
[1].src
= nir_src_for_ssa(&deref
->dest
.ssa
);
135 tex
->src
[2].src_type
= nir_tex_src_coord
;
137 nir_src_for_ssa(nir_channels(b
, nir_load_var(b
, texcoord
),
138 (1 << tex
->coord_components
) - 1));
140 nir_ssa_dest_init(&tex
->instr
, &tex
->dest
, 4, 32, NULL
);
141 nir_builder_instr_insert(b
, &tex
->instr
);
142 return nir_channel(b
, &tex
->dest
.ssa
, 0);
146 make_drawpix_z_stencil_program_nir(struct st_context
*st
,
150 struct nir_builder b
;
151 const nir_shader_compiler_options
*options
=
152 st
->ctx
->Const
.ShaderCompilerOptions
[MESA_SHADER_FRAGMENT
].NirOptions
;
154 nir_builder_init_simple_shader(&b
, NULL
, MESA_SHADER_FRAGMENT
, options
);
156 nir_variable
*texcoord
=
157 nir_variable_create(b
.shader
, nir_var_shader_in
, glsl_vec_type(2),
159 texcoord
->data
.location
= VARYING_SLOT_TEX0
;
163 nir_variable_create(b
.shader
, nir_var_shader_out
, glsl_float_type(),
165 out
->data
.location
= FRAG_RESULT_DEPTH
;
166 nir_ssa_def
*depth
= sample_via_nir(&b
, texcoord
, "depth", 0);
167 nir_store_var(&b
, out
, depth
, 0x1);
169 /* Also copy color */
170 nir_variable
*color_in
=
171 nir_variable_create(b
.shader
, nir_var_shader_in
, glsl_vec_type(4),
173 color_in
->data
.location
= VARYING_SLOT_COL0
;
175 nir_variable
*color_out
=
176 nir_variable_create(b
.shader
, nir_var_shader_out
, glsl_vec_type(4),
178 color_out
->data
.location
= FRAG_RESULT_COLOR
;
179 nir_copy_var(&b
, color_out
, color_in
);
184 nir_variable_create(b
.shader
, nir_var_shader_out
, glsl_uint_type(),
185 "gl_FragStencilRefARB");
186 out
->data
.location
= FRAG_RESULT_STENCIL
;
187 nir_ssa_def
*stencil
= sample_via_nir(&b
, texcoord
, "stencil", 1);
188 nir_store_var(&b
, out
, stencil
, 0x1);
192 snprintf(name
, 14, "drawpixels %s%s",
193 write_depth
? "Z" : "", write_stencil
? "S" : "");
195 return st_nir_finish_builtin_shader(st
, b
.shader
, name
);
200 make_drawpix_z_stencil_program_tgsi(struct st_context
*st
,
204 struct ureg_program
*ureg
;
205 struct ureg_src depth_sampler
, stencil_sampler
;
206 struct ureg_src texcoord
, color
;
207 struct ureg_dst out_color
, out_depth
, out_stencil
;
209 ureg
= ureg_create(PIPE_SHADER_FRAGMENT
);
213 ureg_property(ureg
, TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS
, TRUE
);
216 color
= ureg_DECL_fs_input(ureg
, TGSI_SEMANTIC_COLOR
, 0,
217 TGSI_INTERPOLATE_COLOR
);
218 out_color
= ureg_DECL_output(ureg
, TGSI_SEMANTIC_COLOR
, 0);
220 depth_sampler
= ureg_DECL_sampler(ureg
, 0);
221 ureg_DECL_sampler_view(ureg
, 0, TGSI_TEXTURE_2D
,
222 TGSI_RETURN_TYPE_FLOAT
,
223 TGSI_RETURN_TYPE_FLOAT
,
224 TGSI_RETURN_TYPE_FLOAT
,
225 TGSI_RETURN_TYPE_FLOAT
);
226 out_depth
= ureg_DECL_output(ureg
, TGSI_SEMANTIC_POSITION
, 0);
230 stencil_sampler
= ureg_DECL_sampler(ureg
, 1);
231 ureg_DECL_sampler_view(ureg
, 1, TGSI_TEXTURE_2D
,
232 TGSI_RETURN_TYPE_UINT
,
233 TGSI_RETURN_TYPE_UINT
,
234 TGSI_RETURN_TYPE_UINT
,
235 TGSI_RETURN_TYPE_UINT
);
236 out_stencil
= ureg_DECL_output(ureg
, TGSI_SEMANTIC_STENCIL
, 0);
239 texcoord
= ureg_DECL_fs_input(ureg
,
240 st
->needs_texcoord_semantic
?
241 TGSI_SEMANTIC_TEXCOORD
:
242 TGSI_SEMANTIC_GENERIC
,
243 0, TGSI_INTERPOLATE_LINEAR
);
246 ureg_TEX(ureg
, ureg_writemask(out_depth
, TGSI_WRITEMASK_Z
),
247 TGSI_TEXTURE_2D
, texcoord
, depth_sampler
);
248 ureg_MOV(ureg
, out_color
, color
);
252 ureg_TEX(ureg
, ureg_writemask(out_stencil
, TGSI_WRITEMASK_Y
),
253 TGSI_TEXTURE_2D
, texcoord
, stencil_sampler
);
256 return ureg_create_shader_and_destroy(ureg
, st
->pipe
);
261 * Create fragment program that does a TEX() instruction to get a Z and/or
262 * stencil value value, then writes to FRAG_RESULT_DEPTH/FRAG_RESULT_STENCIL.
263 * Used for glDrawPixels(GL_DEPTH_COMPONENT / GL_STENCIL_INDEX).
264 * Pass fragment color through as-is.
266 * \return CSO of the fragment shader.
269 get_drawpix_z_stencil_program(struct st_context
*st
,
273 struct pipe_screen
*pscreen
= st
->pipe
->screen
;
274 const GLuint shaderIndex
= write_depth
* 2 + write_stencil
;
277 assert(shaderIndex
< ARRAY_SIZE(st
->drawpix
.zs_shaders
));
279 if (st
->drawpix
.zs_shaders
[shaderIndex
]) {
280 /* already have the proper shader */
281 return st
->drawpix
.zs_shaders
[shaderIndex
];
284 enum pipe_shader_ir preferred_ir
=
285 pscreen
->get_shader_param(pscreen
, PIPE_SHADER_FRAGMENT
,
286 PIPE_SHADER_CAP_PREFERRED_IR
);
288 if (preferred_ir
== PIPE_SHADER_IR_NIR
)
289 cso
= make_drawpix_z_stencil_program_nir(st
, write_depth
, write_stencil
);
291 cso
= make_drawpix_z_stencil_program_tgsi(st
, write_depth
, write_stencil
);
293 /* save the new shader */
294 st
->drawpix
.zs_shaders
[shaderIndex
] = cso
;
300 * Create a simple vertex shader that just passes through the
301 * vertex position, texcoord, and color.
304 st_make_passthrough_vertex_shader(struct st_context
*st
)
306 struct pipe_context
*pipe
= st
->pipe
;
307 struct pipe_screen
*screen
= pipe
->screen
;
309 if (st
->passthrough_vs
)
312 enum pipe_shader_ir preferred_ir
=
313 screen
->get_shader_param(screen
, PIPE_SHADER_VERTEX
,
314 PIPE_SHADER_CAP_PREFERRED_IR
);
316 if (preferred_ir
== PIPE_SHADER_IR_NIR
) {
318 { VERT_ATTRIB_POS
, VERT_ATTRIB_COLOR0
, VERT_ATTRIB_GENERIC0
};
320 { VARYING_SLOT_POS
, VARYING_SLOT_COL0
, VARYING_SLOT_TEX0
};
323 st_nir_make_passthrough_shader(st
, "drawpixels VS",
324 MESA_SHADER_VERTEX
, 3,
325 inputs
, outputs
, NULL
, 0);
327 const uint semantic_names
[] = { TGSI_SEMANTIC_POSITION
,
329 st
->needs_texcoord_semantic
? TGSI_SEMANTIC_TEXCOORD
:
330 TGSI_SEMANTIC_GENERIC
};
331 const uint semantic_indexes
[] = { 0, 0, 0 };
334 util_make_vertex_passthrough_shader(st
->pipe
, 3, semantic_names
,
335 semantic_indexes
, false);
341 * Return a texture internalFormat for drawing/copying an image
342 * of the given format and type.
345 internal_format(struct gl_context
*ctx
, GLenum format
, GLenum type
)
348 case GL_DEPTH_COMPONENT
:
350 case GL_UNSIGNED_SHORT
:
351 return GL_DEPTH_COMPONENT16
;
353 case GL_UNSIGNED_INT
:
354 return GL_DEPTH_COMPONENT32
;
357 if (ctx
->Extensions
.ARB_depth_buffer_float
)
358 return GL_DEPTH_COMPONENT32F
;
360 return GL_DEPTH_COMPONENT
;
363 return GL_DEPTH_COMPONENT
;
366 case GL_DEPTH_STENCIL
:
368 case GL_FLOAT_32_UNSIGNED_INT_24_8_REV
:
369 return GL_DEPTH32F_STENCIL8
;
371 case GL_UNSIGNED_INT_24_8
:
373 return GL_DEPTH24_STENCIL8
;
376 case GL_STENCIL_INDEX
:
377 return GL_STENCIL_INDEX
;
380 if (_mesa_is_enum_format_integer(format
)) {
384 case GL_UNSIGNED_BYTE
:
388 case GL_UNSIGNED_SHORT
:
392 case GL_UNSIGNED_INT
:
395 assert(0 && "Unexpected type in internal_format()");
396 return GL_RGBA_INTEGER
;
401 case GL_UNSIGNED_BYTE
:
402 case GL_UNSIGNED_INT_8_8_8_8
:
403 case GL_UNSIGNED_INT_8_8_8_8_REV
:
407 case GL_UNSIGNED_BYTE_3_3_2
:
408 case GL_UNSIGNED_BYTE_2_3_3_REV
:
411 case GL_UNSIGNED_SHORT_4_4_4_4
:
412 case GL_UNSIGNED_SHORT_4_4_4_4_REV
:
415 case GL_UNSIGNED_SHORT_5_6_5
:
416 case GL_UNSIGNED_SHORT_5_6_5_REV
:
419 case GL_UNSIGNED_SHORT_5_5_5_1
:
420 case GL_UNSIGNED_SHORT_1_5_5_5_REV
:
423 case GL_UNSIGNED_INT_10_10_10_2
:
424 case GL_UNSIGNED_INT_2_10_10_10_REV
:
427 case GL_UNSIGNED_SHORT
:
428 case GL_UNSIGNED_INT
:
433 ctx
->Extensions
.EXT_texture_snorm
? GL_RGBA8_SNORM
: GL_RGBA8
;
438 ctx
->Extensions
.EXT_texture_snorm
? GL_RGBA16_SNORM
: GL_RGBA16
;
440 case GL_HALF_FLOAT_ARB
:
442 ctx
->Extensions
.ARB_texture_float
? GL_RGBA16F
:
443 ctx
->Extensions
.EXT_texture_snorm
? GL_RGBA16_SNORM
: GL_RGBA16
;
448 ctx
->Extensions
.ARB_texture_float
? GL_RGBA32F
:
449 ctx
->Extensions
.EXT_texture_snorm
? GL_RGBA16_SNORM
: GL_RGBA16
;
451 case GL_UNSIGNED_INT_5_9_9_9_REV
:
452 assert(ctx
->Extensions
.EXT_texture_shared_exponent
);
455 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
456 assert(ctx
->Extensions
.EXT_packed_float
);
457 return GL_R11F_G11F_B10F
;
465 * Create a temporary texture to hold an image of the given size.
466 * If width, height are not POT and the driver only handles POT textures,
467 * allocate the next larger size of texture that is POT.
469 static struct pipe_resource
*
470 alloc_texture(struct st_context
*st
, GLsizei width
, GLsizei height
,
471 enum pipe_format texFormat
, unsigned bind
)
473 struct pipe_resource
*pt
;
475 pt
= st_texture_create(st
, st
->internal_target
, texFormat
, 0,
476 width
, height
, 1, 1, 0, bind
);
483 * Search the cache for an image which matches the given parameters.
484 * \return pipe_resource pointer if found, NULL if not found.
486 static struct pipe_resource
*
487 search_drawpixels_cache(struct st_context
*st
,
488 GLsizei width
, GLsizei height
,
489 GLenum format
, GLenum type
,
490 const struct gl_pixelstore_attrib
*unpack
,
493 struct pipe_resource
*pt
= NULL
;
494 const GLint bpp
= _mesa_bytes_per_pixel(format
, type
);
497 if ((unpack
->RowLength
!= 0 && unpack
->RowLength
!= width
) ||
498 unpack
->SkipPixels
!= 0 ||
499 unpack
->SkipRows
!= 0 ||
501 _mesa_is_bufferobj(unpack
->BufferObj
)) {
502 /* we don't allow non-default pixel unpacking values */
506 /* Search cache entries for a match */
507 for (i
= 0; i
< ARRAY_SIZE(st
->drawpix_cache
.entries
); i
++) {
508 struct drawpix_cache_entry
*entry
= &st
->drawpix_cache
.entries
[i
];
510 if (width
== entry
->width
&&
511 height
== entry
->height
&&
512 format
== entry
->format
&&
513 type
== entry
->type
&&
514 pixels
== entry
->user_pointer
&&
516 assert(entry
->texture
);
518 /* check if the pixel data is the same */
519 if (memcmp(pixels
, entry
->image
, width
* height
* bpp
) == 0) {
520 /* Success - found a cache match */
521 pipe_resource_reference(&pt
, entry
->texture
);
522 /* refcount of returned texture should be at least two here. One
523 * reference for the cache to hold on to, one for the caller (which
524 * it will release), and possibly more held by the driver.
526 assert(pt
->reference
.count
>= 2);
528 /* update the age of this entry */
529 entry
->age
= ++st
->drawpix_cache
.age
;
536 /* no cache match found */
542 * Find the oldest entry in the glDrawPixels cache. We'll replace this
543 * one when we need to store a new image.
545 static struct drawpix_cache_entry
*
546 find_oldest_drawpixels_cache_entry(struct st_context
*st
)
548 unsigned oldest_age
= ~0u, oldest_index
= ~0u;
551 /* Find entry with oldest (lowest) age */
552 for (i
= 0; i
< ARRAY_SIZE(st
->drawpix_cache
.entries
); i
++) {
553 const struct drawpix_cache_entry
*entry
= &st
->drawpix_cache
.entries
[i
];
554 if (entry
->age
< oldest_age
) {
555 oldest_age
= entry
->age
;
560 assert(oldest_index
!= ~0u);
562 return &st
->drawpix_cache
.entries
[oldest_index
];
567 * Try to save the given glDrawPixels image in the cache.
570 cache_drawpixels_image(struct st_context
*st
,
571 GLsizei width
, GLsizei height
,
572 GLenum format
, GLenum type
,
573 const struct gl_pixelstore_attrib
*unpack
,
575 struct pipe_resource
*pt
)
577 if ((unpack
->RowLength
== 0 || unpack
->RowLength
== width
) &&
578 unpack
->SkipPixels
== 0 &&
579 unpack
->SkipRows
== 0) {
580 const GLint bpp
= _mesa_bytes_per_pixel(format
, type
);
581 struct drawpix_cache_entry
*entry
=
582 find_oldest_drawpixels_cache_entry(st
);
584 entry
->width
= width
;
585 entry
->height
= height
;
586 entry
->format
= format
;
588 entry
->user_pointer
= pixels
;
590 entry
->image
= malloc(width
* height
* bpp
);
592 memcpy(entry
->image
, pixels
, width
* height
* bpp
);
593 pipe_resource_reference(&entry
->texture
, pt
);
594 entry
->age
= ++st
->drawpix_cache
.age
;
597 /* out of memory, free/disable cached texture */
600 pipe_resource_reference(&entry
->texture
, NULL
);
607 * Make texture containing an image for glDrawPixels image.
608 * If 'pixels' is NULL, leave the texture image data undefined.
610 static struct pipe_resource
*
611 make_texture(struct st_context
*st
,
612 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
613 const struct gl_pixelstore_attrib
*unpack
,
616 struct gl_context
*ctx
= st
->ctx
;
617 struct pipe_context
*pipe
= st
->pipe
;
619 struct pipe_resource
*pt
= NULL
;
620 enum pipe_format pipeFormat
;
621 GLenum baseInternalFormat
;
623 #if USE_DRAWPIXELS_CACHE
624 pt
= search_drawpixels_cache(st
, width
, height
, format
, type
,
631 /* Choose a pixel format for the temp texture which will hold the
634 pipeFormat
= st_choose_matching_format(st
, PIPE_BIND_SAMPLER_VIEW
,
635 format
, type
, unpack
->SwapBytes
);
637 if (pipeFormat
== PIPE_FORMAT_NONE
) {
638 /* Use the generic approach. */
639 GLenum intFormat
= internal_format(ctx
, format
, type
);
641 pipeFormat
= st_choose_format(st
, intFormat
, format
, type
,
642 st
->internal_target
, 0, 0,
643 PIPE_BIND_SAMPLER_VIEW
, FALSE
);
644 assert(pipeFormat
!= PIPE_FORMAT_NONE
);
647 mformat
= st_pipe_format_to_mesa_format(pipeFormat
);
648 baseInternalFormat
= _mesa_get_format_base_format(mformat
);
650 pixels
= _mesa_map_pbo_source(ctx
, unpack
, pixels
);
654 /* alloc temporary texture */
655 pt
= alloc_texture(st
, width
, height
, pipeFormat
, PIPE_BIND_SAMPLER_VIEW
);
657 _mesa_unmap_pbo_source(ctx
, unpack
);
662 struct pipe_transfer
*transfer
;
664 const GLbitfield imageTransferStateSave
= ctx
->_ImageTransferState
;
666 /* we'll do pixel transfer in a fragment shader */
667 ctx
->_ImageTransferState
= 0x0;
669 /* map texture transfer */
670 dest
= pipe_transfer_map(pipe
, pt
, 0, 0,
671 PIPE_TRANSFER_WRITE
, 0, 0,
672 width
, height
, &transfer
);
674 pipe_resource_reference(&pt
, NULL
);
675 _mesa_unmap_pbo_source(ctx
, unpack
);
679 /* Put image into texture transfer.
680 * Note that the image is actually going to be upside down in
681 * the texture. We deal with that with texcoords.
683 if ((format
== GL_RGBA
|| format
== GL_BGRA
)
684 && type
== GL_UNSIGNED_BYTE
) {
685 /* Use a memcpy-based texstore to avoid software pixel swizzling.
686 * We'll do the necessary swizzling with the pipe_sampler_view to
687 * give much better performance.
688 * XXX in the future, expand this to accomodate more format and
691 _mesa_memcpy_texture(ctx
, 2,
692 mformat
, /* mesa_format */
693 transfer
->stride
, /* dstRowStride, bytes */
694 &dest
, /* destSlices */
695 width
, height
, 1, /* size */
696 format
, type
, /* src format/type */
697 pixels
, /* data source */
701 bool MAYBE_UNUSED success
;
702 success
= _mesa_texstore(ctx
, 2, /* dims */
703 baseInternalFormat
, /* baseInternalFormat */
704 mformat
, /* mesa_format */
705 transfer
->stride
, /* dstRowStride, bytes */
706 &dest
, /* destSlices */
707 width
, height
, 1, /* size */
708 format
, type
, /* src format/type */
709 pixels
, /* data source */
716 pipe_transfer_unmap(pipe
, transfer
);
719 ctx
->_ImageTransferState
= imageTransferStateSave
;
722 _mesa_unmap_pbo_source(ctx
, unpack
);
724 #if USE_DRAWPIXELS_CACHE
725 cache_drawpixels_image(st
, width
, height
, format
, type
, unpack
, pixels
, pt
);
733 draw_textured_quad(struct gl_context
*ctx
, GLint x
, GLint y
, GLfloat z
,
734 GLsizei width
, GLsizei height
,
735 GLfloat zoomX
, GLfloat zoomY
,
736 struct pipe_sampler_view
**sv
,
737 int num_sampler_view
,
740 struct st_fp_variant
*fpv
,
741 const GLfloat
*color
,
743 GLboolean write_depth
, GLboolean write_stencil
)
745 struct st_context
*st
= st_context(ctx
);
746 struct pipe_context
*pipe
= st
->pipe
;
747 struct cso_context
*cso
= st
->cso_context
;
748 const unsigned fb_width
= _mesa_geometric_width(ctx
->DrawBuffer
);
749 const unsigned fb_height
= _mesa_geometric_height(ctx
->DrawBuffer
);
750 GLfloat x0
, y0
, x1
, y1
;
751 GLsizei MAYBE_UNUSED maxSize
;
752 boolean normalized
= sv
[0]->texture
->target
== PIPE_TEXTURE_2D
;
753 unsigned cso_state_mask
;
755 assert(sv
[0]->texture
->target
== st
->internal_target
);
758 /* XXX if DrawPixels image is larger than max texture size, break
761 maxSize
= 1 << (pipe
->screen
->get_param(pipe
->screen
,
762 PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
763 assert(width
<= maxSize
);
764 assert(height
<= maxSize
);
766 cso_state_mask
= (CSO_BIT_RASTERIZER
|
768 CSO_BIT_FRAGMENT_SAMPLERS
|
769 CSO_BIT_FRAGMENT_SAMPLER_VIEWS
|
770 CSO_BIT_STREAM_OUTPUTS
|
771 CSO_BIT_VERTEX_ELEMENTS
|
772 CSO_BIT_AUX_VERTEX_BUFFER_SLOT
|
773 CSO_BITS_ALL_SHADERS
);
775 cso_state_mask
|= (CSO_BIT_DEPTH_STENCIL_ALPHA
|
778 cso_save_state(cso
, cso_state_mask
);
780 /* rasterizer state: just scissor */
782 struct pipe_rasterizer_state rasterizer
;
783 memset(&rasterizer
, 0, sizeof(rasterizer
));
784 rasterizer
.clamp_fragment_color
= !st
->clamp_frag_color_in_shader
&&
785 ctx
->Color
._ClampFragmentColor
;
786 rasterizer
.half_pixel_center
= 1;
787 rasterizer
.bottom_edge_rule
= 1;
788 rasterizer
.depth_clip_near
= !ctx
->Transform
.DepthClampNear
;
789 rasterizer
.depth_clip_far
= !ctx
->Transform
.DepthClampFar
;
790 rasterizer
.scissor
= ctx
->Scissor
.EnableFlags
;
791 cso_set_rasterizer(cso
, &rasterizer
);
795 /* Stencil writing bypasses the normal fragment pipeline to
796 * disable color writing and set stencil test to always pass.
798 struct pipe_depth_stencil_alpha_state dsa
;
799 struct pipe_blend_state blend
;
802 memset(&dsa
, 0, sizeof(dsa
));
803 dsa
.stencil
[0].enabled
= 1;
804 dsa
.stencil
[0].func
= PIPE_FUNC_ALWAYS
;
805 dsa
.stencil
[0].writemask
= ctx
->Stencil
.WriteMask
[0] & 0xff;
806 dsa
.stencil
[0].zpass_op
= PIPE_STENCIL_OP_REPLACE
;
808 /* writing depth+stencil: depth test always passes */
809 dsa
.depth
.enabled
= 1;
810 dsa
.depth
.writemask
= ctx
->Depth
.Mask
;
811 dsa
.depth
.func
= PIPE_FUNC_ALWAYS
;
813 cso_set_depth_stencil_alpha(cso
, &dsa
);
815 /* blend (colormask) */
816 memset(&blend
, 0, sizeof(blend
));
817 cso_set_blend(cso
, &blend
);
820 /* fragment shader state: TEX lookup program */
821 cso_set_fragment_shader_handle(cso
, driver_fp
);
823 /* vertex shader state: position + texcoord pass-through */
824 cso_set_vertex_shader_handle(cso
, driver_vp
);
826 /* disable other shaders */
827 cso_set_tessctrl_shader_handle(cso
, NULL
);
828 cso_set_tesseval_shader_handle(cso
, NULL
);
829 cso_set_geometry_shader_handle(cso
, NULL
);
831 /* user samplers, plus the drawpix samplers */
833 struct pipe_sampler_state sampler
;
835 memset(&sampler
, 0, sizeof(sampler
));
836 sampler
.wrap_s
= PIPE_TEX_WRAP_CLAMP
;
837 sampler
.wrap_t
= PIPE_TEX_WRAP_CLAMP
;
838 sampler
.wrap_r
= PIPE_TEX_WRAP_CLAMP
;
839 sampler
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
840 sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
841 sampler
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
842 sampler
.normalized_coords
= normalized
;
845 /* drawing a color image */
846 const struct pipe_sampler_state
*samplers
[PIPE_MAX_SAMPLERS
];
847 uint num
= MAX3(fpv
->drawpix_sampler
+ 1,
848 fpv
->pixelmap_sampler
+ 1,
849 st
->state
.num_frag_samplers
);
852 for (i
= 0; i
< st
->state
.num_frag_samplers
; i
++)
853 samplers
[i
] = &st
->state
.frag_samplers
[i
];
855 samplers
[fpv
->drawpix_sampler
] = &sampler
;
857 samplers
[fpv
->pixelmap_sampler
] = &sampler
;
859 cso_set_samplers(cso
, PIPE_SHADER_FRAGMENT
, num
, samplers
);
861 /* drawing a depth/stencil image */
862 const struct pipe_sampler_state
*samplers
[2] = {&sampler
, &sampler
};
864 cso_set_samplers(cso
, PIPE_SHADER_FRAGMENT
, num_sampler_view
, samplers
);
868 /* user textures, plus the drawpix textures */
870 /* drawing a color image */
871 struct pipe_sampler_view
*sampler_views
[PIPE_MAX_SAMPLERS
];
872 uint num
= MAX3(fpv
->drawpix_sampler
+ 1,
873 fpv
->pixelmap_sampler
+ 1,
874 st
->state
.num_sampler_views
[PIPE_SHADER_FRAGMENT
]);
876 memcpy(sampler_views
, st
->state
.frag_sampler_views
,
877 sizeof(sampler_views
));
879 sampler_views
[fpv
->drawpix_sampler
] = sv
[0];
881 sampler_views
[fpv
->pixelmap_sampler
] = sv
[1];
882 cso_set_sampler_views(cso
, PIPE_SHADER_FRAGMENT
, num
, sampler_views
);
884 /* drawing a depth/stencil image */
885 cso_set_sampler_views(cso
, PIPE_SHADER_FRAGMENT
, num_sampler_view
, sv
);
888 /* viewport state: viewport matching window dims */
889 cso_set_viewport_dims(cso
, fb_width
, fb_height
, TRUE
);
891 cso_set_vertex_elements(cso
, 3, st
->util_velems
);
892 cso_set_stream_outputs(cso
, 0, NULL
, NULL
);
894 /* Compute Gallium window coords (y=0=top) with pixel zoom.
895 * Recall that these coords are transformed by the current
896 * vertex shader and viewport transformation.
898 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_BOTTOM
) {
899 y
= fb_height
- (int) (y
+ height
* ctx
->Pixel
.ZoomY
);
900 invertTex
= !invertTex
;
904 x1
= x
+ width
* ctx
->Pixel
.ZoomX
;
906 y1
= y
+ height
* ctx
->Pixel
.ZoomY
;
908 /* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
912 const float clip_x0
= x0
/ (float) fb_width
* 2.0f
- 1.0f
;
913 const float clip_y0
= y0
/ (float) fb_height
* 2.0f
- 1.0f
;
914 const float clip_x1
= x1
/ (float) fb_width
* 2.0f
- 1.0f
;
915 const float clip_y1
= y1
/ (float) fb_height
* 2.0f
- 1.0f
;
916 const float maxXcoord
= normalized
?
917 ((float) width
/ sv
[0]->texture
->width0
) : (float) width
;
918 const float maxYcoord
= normalized
919 ? ((float) height
/ sv
[0]->texture
->height0
) : (float) height
;
920 const float sLeft
= 0.0f
, sRight
= maxXcoord
;
921 const float tTop
= invertTex
? maxYcoord
: 0.0f
;
922 const float tBot
= invertTex
? 0.0f
: maxYcoord
;
924 if (!st_draw_quad(st
, clip_x0
, clip_y0
, clip_x1
, clip_y1
, z
,
925 sLeft
, tBot
, sRight
, tTop
, color
, 0)) {
926 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDrawPixels");
931 cso_restore_state(cso
);
936 * Software fallback to do glDrawPixels(GL_STENCIL_INDEX) when we
937 * can't use a fragment shader to write stencil values.
940 draw_stencil_pixels(struct gl_context
*ctx
, GLint x
, GLint y
,
941 GLsizei width
, GLsizei height
, GLenum format
, GLenum type
,
942 const struct gl_pixelstore_attrib
*unpack
,
945 struct st_context
*st
= st_context(ctx
);
946 struct pipe_context
*pipe
= st
->pipe
;
947 struct st_renderbuffer
*strb
;
948 enum pipe_transfer_usage usage
;
949 struct pipe_transfer
*pt
;
950 const GLboolean zoom
= ctx
->Pixel
.ZoomX
!= 1.0 || ctx
->Pixel
.ZoomY
!= 1.0;
952 struct gl_pixelstore_attrib clippedUnpack
= *unpack
;
957 if (!_mesa_clip_drawpixels(ctx
, &x
, &y
, &width
, &height
,
959 /* totally clipped */
964 strb
= st_renderbuffer(ctx
->DrawBuffer
->
965 Attachment
[BUFFER_STENCIL
].Renderbuffer
);
967 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
968 y
= ctx
->DrawBuffer
->Height
- y
- height
;
971 if (format
== GL_STENCIL_INDEX
&&
972 _mesa_is_format_packed_depth_stencil(strb
->Base
.Format
)) {
973 /* writing stencil to a combined depth+stencil buffer */
974 usage
= PIPE_TRANSFER_READ_WRITE
;
977 usage
= PIPE_TRANSFER_WRITE
;
980 stmap
= pipe_transfer_map(pipe
, strb
->texture
,
981 strb
->surface
->u
.tex
.level
,
982 strb
->surface
->u
.tex
.first_layer
,
986 pixels
= _mesa_map_pbo_source(ctx
, &clippedUnpack
, pixels
);
989 sValues
= malloc(width
* sizeof(GLubyte
));
990 zValues
= malloc(width
* sizeof(GLuint
));
992 if (sValues
&& zValues
) {
994 for (row
= 0; row
< height
; row
++) {
995 GLfloat
*zValuesFloat
= (GLfloat
*)zValues
;
996 GLenum destType
= GL_UNSIGNED_BYTE
;
997 const void *source
= _mesa_image_address2d(&clippedUnpack
, pixels
,
1001 _mesa_unpack_stencil_span(ctx
, width
, destType
, sValues
,
1002 type
, source
, &clippedUnpack
,
1003 ctx
->_ImageTransferState
);
1005 if (format
== GL_DEPTH_STENCIL
) {
1007 pt
->resource
->format
== PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
?
1008 GL_FLOAT
: GL_UNSIGNED_INT
;
1010 _mesa_unpack_depth_span(ctx
, width
, ztype
, zValues
,
1011 (1 << 24) - 1, type
, source
,
1016 _mesa_problem(ctx
, "Gallium glDrawPixels(GL_STENCIL) with "
1017 "zoom not complete");
1023 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
1024 spanY
= height
- row
- 1;
1030 /* now pack the stencil (and Z) values in the dest format */
1031 switch (pt
->resource
->format
) {
1032 case PIPE_FORMAT_S8_UINT
:
1034 ubyte
*dest
= stmap
+ spanY
* pt
->stride
;
1035 assert(usage
== PIPE_TRANSFER_WRITE
);
1036 memcpy(dest
, sValues
, width
);
1039 case PIPE_FORMAT_Z24_UNORM_S8_UINT
:
1040 if (format
== GL_DEPTH_STENCIL
) {
1041 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
1043 assert(usage
== PIPE_TRANSFER_WRITE
);
1044 for (k
= 0; k
< width
; k
++) {
1045 dest
[k
] = zValues
[k
] | (sValues
[k
] << 24);
1049 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
1051 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
1052 for (k
= 0; k
< width
; k
++) {
1053 dest
[k
] = (dest
[k
] & 0xffffff) | (sValues
[k
] << 24);
1057 case PIPE_FORMAT_S8_UINT_Z24_UNORM
:
1058 if (format
== GL_DEPTH_STENCIL
) {
1059 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
1061 assert(usage
== PIPE_TRANSFER_WRITE
);
1062 for (k
= 0; k
< width
; k
++) {
1063 dest
[k
] = (zValues
[k
] << 8) | (sValues
[k
] & 0xff);
1067 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
1069 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
1070 for (k
= 0; k
< width
; k
++) {
1071 dest
[k
] = (dest
[k
] & 0xffffff00) | (sValues
[k
] & 0xff);
1075 case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT
:
1076 if (format
== GL_DEPTH_STENCIL
) {
1077 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
1078 GLfloat
*destf
= (GLfloat
*)dest
;
1080 assert(usage
== PIPE_TRANSFER_WRITE
);
1081 for (k
= 0; k
< width
; k
++) {
1082 destf
[k
*2] = zValuesFloat
[k
];
1083 dest
[k
*2+1] = sValues
[k
] & 0xff;
1087 uint
*dest
= (uint
*) (stmap
+ spanY
* pt
->stride
);
1089 assert(usage
== PIPE_TRANSFER_READ_WRITE
);
1090 for (k
= 0; k
< width
; k
++) {
1091 dest
[k
*2+1] = sValues
[k
] & 0xff;
1102 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDrawPixels()");
1108 _mesa_unmap_pbo_source(ctx
, &clippedUnpack
);
1110 /* unmap the stencil buffer */
1111 pipe_transfer_unmap(pipe
, pt
);
1116 * Get fragment program variant for a glDrawPixels or glCopyPixels
1117 * command for RGBA data.
1119 static struct st_fp_variant
*
1120 get_color_fp_variant(struct st_context
*st
)
1122 struct gl_context
*ctx
= st
->ctx
;
1123 struct st_fp_variant_key key
;
1124 struct st_fp_variant
*fpv
;
1126 memset(&key
, 0, sizeof(key
));
1128 key
.st
= st
->has_shareable_shaders
? NULL
: st
;
1130 key
.scaleAndBias
= (ctx
->Pixel
.RedBias
!= 0.0 ||
1131 ctx
->Pixel
.RedScale
!= 1.0 ||
1132 ctx
->Pixel
.GreenBias
!= 0.0 ||
1133 ctx
->Pixel
.GreenScale
!= 1.0 ||
1134 ctx
->Pixel
.BlueBias
!= 0.0 ||
1135 ctx
->Pixel
.BlueScale
!= 1.0 ||
1136 ctx
->Pixel
.AlphaBias
!= 0.0 ||
1137 ctx
->Pixel
.AlphaScale
!= 1.0);
1138 key
.pixelMaps
= ctx
->Pixel
.MapColorFlag
;
1139 key
.clamp_color
= st
->clamp_frag_color_in_shader
&&
1140 ctx
->Color
._ClampFragmentColor
;
1142 fpv
= st_get_fp_variant(st
, st
->fp
, &key
);
1148 * Get fragment program variant for a glDrawPixels command
1149 * for COLOR_INDEX data
1151 static struct st_fp_variant
*
1152 get_color_index_fp_variant(struct st_context
*st
)
1154 struct gl_context
*ctx
= st
->ctx
;
1155 struct st_fp_variant_key key
;
1156 struct st_fp_variant
*fpv
;
1158 memset(&key
, 0, sizeof(key
));
1160 key
.st
= st
->has_shareable_shaders
? NULL
: st
;
1162 /* Since GL is always in RGBA mode MapColorFlag does not
1163 * affect GL_COLOR_INDEX format.
1164 * Scale and bias also never affect GL_COLOR_INDEX format.
1166 key
.scaleAndBias
= 0;
1168 key
.clamp_color
= st
->clamp_frag_color_in_shader
&&
1169 ctx
->Color
._ClampFragmentColor
;
1171 fpv
= st_get_fp_variant(st
, st
->fp
, &key
);
1178 * Clamp glDrawPixels width and height to the maximum texture size.
1181 clamp_size(struct pipe_context
*pipe
, GLsizei
*width
, GLsizei
*height
,
1182 struct gl_pixelstore_attrib
*unpack
)
1185 1 << (pipe
->screen
->get_param(pipe
->screen
,
1186 PIPE_CAP_MAX_TEXTURE_2D_LEVELS
) - 1);
1188 if (*width
> maxSize
) {
1189 if (unpack
->RowLength
== 0)
1190 unpack
->RowLength
= *width
;
1193 if (*height
> maxSize
) {
1200 * Search the array of 4 swizzle components for the named component and return
1204 search_swizzle(const unsigned char swizzle
[4], unsigned component
)
1207 for (i
= 0; i
< 4; i
++) {
1208 if (swizzle
[i
] == component
)
1211 assert(!"search_swizzle() failed");
1217 * Set the sampler view's swizzle terms. This is used to handle RGBA
1218 * swizzling when the incoming image format isn't an exact match for
1219 * the actual texture format. For example, if we have glDrawPixels(
1220 * GL_RGBA, GL_UNSIGNED_BYTE) and we chose the texture format
1221 * PIPE_FORMAT_B8G8R8A8 then we can do use the sampler view swizzle to
1222 * avoid swizzling all the pixels in software in the texstore code.
1225 setup_sampler_swizzle(struct pipe_sampler_view
*sv
, GLenum format
, GLenum type
)
1227 if ((format
== GL_RGBA
|| format
== GL_BGRA
) && type
== GL_UNSIGNED_BYTE
) {
1228 const struct util_format_description
*desc
=
1229 util_format_description(sv
->texture
->format
);
1230 unsigned c0
, c1
, c2
, c3
;
1232 /* Every gallium driver supports at least one 32-bit packed RGBA format.
1233 * We must have chosen one for (GL_RGBA, GL_UNSIGNED_BYTE).
1235 assert(desc
->block
.bits
== 32);
1237 /* invert the format's swizzle to setup the sampler's swizzle */
1238 if (format
== GL_RGBA
) {
1239 c0
= PIPE_SWIZZLE_X
;
1240 c1
= PIPE_SWIZZLE_Y
;
1241 c2
= PIPE_SWIZZLE_Z
;
1242 c3
= PIPE_SWIZZLE_W
;
1245 assert(format
== GL_BGRA
);
1246 c0
= PIPE_SWIZZLE_Z
;
1247 c1
= PIPE_SWIZZLE_Y
;
1248 c2
= PIPE_SWIZZLE_X
;
1249 c3
= PIPE_SWIZZLE_W
;
1251 sv
->swizzle_r
= search_swizzle(desc
->swizzle
, c0
);
1252 sv
->swizzle_g
= search_swizzle(desc
->swizzle
, c1
);
1253 sv
->swizzle_b
= search_swizzle(desc
->swizzle
, c2
);
1254 sv
->swizzle_a
= search_swizzle(desc
->swizzle
, c3
);
1257 /* use the default sampler swizzle */
1263 * Called via ctx->Driver.DrawPixels()
1266 st_DrawPixels(struct gl_context
*ctx
, GLint x
, GLint y
,
1267 GLsizei width
, GLsizei height
,
1268 GLenum format
, GLenum type
,
1269 const struct gl_pixelstore_attrib
*unpack
, const void *pixels
)
1272 struct st_context
*st
= st_context(ctx
);
1273 struct pipe_context
*pipe
= st
->pipe
;
1274 GLboolean write_stencil
= GL_FALSE
, write_depth
= GL_FALSE
;
1275 struct pipe_sampler_view
*sv
[2] = { NULL
};
1276 int num_sampler_view
= 1;
1277 struct gl_pixelstore_attrib clippedUnpack
;
1278 struct st_fp_variant
*fpv
= NULL
;
1279 struct pipe_resource
*pt
;
1281 /* Mesa state should be up to date by now */
1282 assert(ctx
->NewState
== 0x0);
1284 _mesa_update_draw_buffer_bounds(ctx
, ctx
->DrawBuffer
);
1286 st_flush_bitmap_cache(st
);
1287 st_invalidate_readpix_cache(st
);
1289 st_validate_state(st
, ST_PIPELINE_META
);
1291 /* Limit the size of the glDrawPixels to the max texture size.
1292 * Strictly speaking, that's not correct but since we don't handle
1293 * larger images yet, this is better than crashing.
1295 clippedUnpack
= *unpack
;
1296 unpack
= &clippedUnpack
;
1297 clamp_size(st
->pipe
, &width
, &height
, &clippedUnpack
);
1299 if (format
== GL_DEPTH_STENCIL
)
1300 write_stencil
= write_depth
= GL_TRUE
;
1301 else if (format
== GL_STENCIL_INDEX
)
1302 write_stencil
= GL_TRUE
;
1303 else if (format
== GL_DEPTH_COMPONENT
)
1304 write_depth
= GL_TRUE
;
1306 if (write_stencil
&&
1307 !pipe
->screen
->get_param(pipe
->screen
, PIPE_CAP_SHADER_STENCIL_EXPORT
)) {
1308 /* software fallback */
1309 draw_stencil_pixels(ctx
, x
, y
, width
, height
, format
, type
,
1314 /* Put glDrawPixels image into a texture */
1315 pt
= make_texture(st
, width
, height
, format
, type
, unpack
, pixels
);
1317 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDrawPixels");
1321 st_make_passthrough_vertex_shader(st
);
1324 * Get vertex/fragment shaders
1326 if (write_depth
|| write_stencil
) {
1327 driver_fp
= get_drawpix_z_stencil_program(st
, write_depth
,
1331 fpv
= (format
!= GL_COLOR_INDEX
) ? get_color_fp_variant(st
) :
1332 get_color_index_fp_variant(st
);
1334 driver_fp
= fpv
->driver_shader
;
1336 if (ctx
->Pixel
.MapColorFlag
&& format
!= GL_COLOR_INDEX
) {
1337 pipe_sampler_view_reference(&sv
[1],
1338 st
->pixel_xfer
.pixelmap_sampler_view
);
1342 /* compiling a new fragment shader variant added new state constants
1343 * into the constant buffer, we need to update them
1345 st_upload_constants(st
, &st
->fp
->Base
);
1348 /* create sampler view for the image */
1349 sv
[0] = st_create_texture_sampler_view(st
->pipe
, pt
);
1351 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDrawPixels");
1352 pipe_resource_reference(&pt
, NULL
);
1356 /* Set up the sampler view's swizzle */
1357 setup_sampler_swizzle(sv
[0], format
, type
);
1359 /* Create a second sampler view to read stencil. The stencil is
1360 * written using the shader stencil export functionality.
1362 if (write_stencil
) {
1363 enum pipe_format stencil_format
=
1364 util_format_stencil_only(pt
->format
);
1365 /* we should not be doing pixel map/transfer (see above) */
1366 assert(num_sampler_view
== 1);
1367 sv
[1] = st_create_texture_sampler_view_format(st
->pipe
, pt
,
1370 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDrawPixels");
1371 pipe_resource_reference(&pt
, NULL
);
1372 pipe_sampler_view_reference(&sv
[0], NULL
);
1378 draw_textured_quad(ctx
, x
, y
, ctx
->Current
.RasterPos
[2],
1380 ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
1385 ctx
->Current
.RasterColor
,
1386 GL_FALSE
, write_depth
, write_stencil
);
1387 pipe_sampler_view_reference(&sv
[0], NULL
);
1388 if (num_sampler_view
> 1)
1389 pipe_sampler_view_reference(&sv
[1], NULL
);
1391 /* free the texture (but may persist in the cache) */
1392 pipe_resource_reference(&pt
, NULL
);
1398 * Software fallback for glCopyPixels(GL_STENCIL).
1401 copy_stencil_pixels(struct gl_context
*ctx
, GLint srcx
, GLint srcy
,
1402 GLsizei width
, GLsizei height
,
1403 GLint dstx
, GLint dsty
)
1405 struct st_renderbuffer
*rbDraw
;
1406 struct pipe_context
*pipe
= st_context(ctx
)->pipe
;
1407 enum pipe_transfer_usage usage
;
1408 struct pipe_transfer
*ptDraw
;
1413 buffer
= malloc(width
* height
* sizeof(ubyte
));
1415 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCopyPixels(stencil)");
1419 /* Get the dest renderbuffer */
1420 rbDraw
= st_renderbuffer(ctx
->DrawBuffer
->
1421 Attachment
[BUFFER_STENCIL
].Renderbuffer
);
1423 /* this will do stencil pixel transfer ops */
1424 _mesa_readpixels(ctx
, srcx
, srcy
, width
, height
,
1425 GL_STENCIL_INDEX
, GL_UNSIGNED_BYTE
,
1426 &ctx
->DefaultPacking
, buffer
);
1429 /* debug code: dump stencil values */
1431 for (row
= 0; row
< height
; row
++) {
1432 printf("%3d: ", row
);
1433 for (col
= 0; col
< width
; col
++) {
1434 printf("%02x ", buffer
[col
+ row
* width
]);
1440 if (_mesa_is_format_packed_depth_stencil(rbDraw
->Base
.Format
))
1441 usage
= PIPE_TRANSFER_READ_WRITE
;
1443 usage
= PIPE_TRANSFER_WRITE
;
1445 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
1446 dsty
= rbDraw
->Base
.Height
- dsty
- height
;
1449 assert(util_format_get_blockwidth(rbDraw
->texture
->format
) == 1);
1450 assert(util_format_get_blockheight(rbDraw
->texture
->format
) == 1);
1452 /* map the stencil buffer */
1453 drawMap
= pipe_transfer_map(pipe
,
1455 rbDraw
->surface
->u
.tex
.level
,
1456 rbDraw
->surface
->u
.tex
.first_layer
,
1458 width
, height
, &ptDraw
);
1461 /* XXX PixelZoom not handled yet */
1462 for (i
= 0; i
< height
; i
++) {
1469 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
1473 dst
= drawMap
+ y
* ptDraw
->stride
;
1474 src
= buffer
+ i
* width
;
1476 _mesa_pack_ubyte_stencil_row(rbDraw
->Base
.Format
, width
, src
, dst
);
1481 /* unmap the stencil buffer */
1482 pipe_transfer_unmap(pipe
, ptDraw
);
1487 * Return renderbuffer to use for reading color pixels for glCopyPixels
1489 static struct st_renderbuffer
*
1490 st_get_color_read_renderbuffer(struct gl_context
*ctx
)
1492 struct gl_framebuffer
*fb
= ctx
->ReadBuffer
;
1493 struct st_renderbuffer
*strb
=
1494 st_renderbuffer(fb
->_ColorReadBuffer
);
1501 * Try to do a glCopyPixels for simple cases with a blit by calling
1504 * We can do this when we're copying color pixels (depth/stencil
1505 * eventually) with no pixel zoom, no pixel transfer ops, no
1506 * per-fragment ops, and the src/dest regions don't overlap.
1509 blit_copy_pixels(struct gl_context
*ctx
, GLint srcx
, GLint srcy
,
1510 GLsizei width
, GLsizei height
,
1511 GLint dstx
, GLint dsty
, GLenum type
)
1513 struct st_context
*st
= st_context(ctx
);
1514 struct pipe_context
*pipe
= st
->pipe
;
1515 struct pipe_screen
*screen
= pipe
->screen
;
1516 struct gl_pixelstore_attrib pack
, unpack
;
1517 GLint readX
, readY
, readW
, readH
, drawX
, drawY
, drawW
, drawH
;
1519 if (type
== GL_COLOR
&&
1520 ctx
->Pixel
.ZoomX
== 1.0 &&
1521 ctx
->Pixel
.ZoomY
== 1.0 &&
1522 ctx
->_ImageTransferState
== 0x0 &&
1523 !ctx
->Color
.BlendEnabled
&&
1524 !ctx
->Color
.AlphaEnabled
&&
1525 (!ctx
->Color
.ColorLogicOpEnabled
|| ctx
->Color
.LogicOp
== GL_COPY
) &&
1527 !ctx
->Fog
.Enabled
&&
1528 !ctx
->Stencil
.Enabled
&&
1529 !ctx
->FragmentProgram
.Enabled
&&
1530 !ctx
->VertexProgram
.Enabled
&&
1531 !ctx
->_Shader
->CurrentProgram
[MESA_SHADER_FRAGMENT
] &&
1532 !_mesa_ati_fragment_shader_enabled(ctx
) &&
1533 ctx
->DrawBuffer
->_NumColorDrawBuffers
== 1 &&
1534 !ctx
->Query
.CondRenderQuery
&&
1535 !ctx
->Query
.CurrentOcclusionObject
) {
1536 struct st_renderbuffer
*rbRead
, *rbDraw
;
1539 * Clip the read region against the src buffer bounds.
1540 * We'll still allocate a temporary buffer/texture for the original
1541 * src region size but we'll only read the region which is on-screen.
1542 * This may mean that we draw garbage pixels into the dest region, but
1549 pack
= ctx
->DefaultPacking
;
1550 if (!_mesa_clip_readpixels(ctx
, &readX
, &readY
, &readW
, &readH
, &pack
))
1551 return GL_TRUE
; /* all done */
1553 /* clip against dest buffer bounds and scissor box */
1554 drawX
= dstx
+ pack
.SkipPixels
;
1555 drawY
= dsty
+ pack
.SkipRows
;
1557 if (!_mesa_clip_drawpixels(ctx
, &drawX
, &drawY
, &readW
, &readH
, &unpack
))
1558 return GL_TRUE
; /* all done */
1560 readX
= readX
- pack
.SkipPixels
+ unpack
.SkipPixels
;
1561 readY
= readY
- pack
.SkipRows
+ unpack
.SkipRows
;
1566 rbRead
= st_get_color_read_renderbuffer(ctx
);
1567 rbDraw
= st_renderbuffer(ctx
->DrawBuffer
->_ColorDrawBuffers
[0]);
1569 /* Flip src/dst position depending on the orientation of buffers. */
1570 if (st_fb_orientation(ctx
->ReadBuffer
) == Y_0_TOP
) {
1571 readY
= rbRead
->Base
.Height
- readY
;
1575 if (st_fb_orientation(ctx
->DrawBuffer
) == Y_0_TOP
) {
1576 /* We can't flip the destination for pipe->blit, so we only adjust
1577 * its position and flip the source.
1579 drawY
= rbDraw
->Base
.Height
- drawY
- drawH
;
1584 if (rbRead
!= rbDraw
||
1585 !_mesa_regions_overlap(readX
, readY
, readX
+ readW
, readY
+ readH
,
1586 drawX
, drawY
, drawX
+ drawW
, drawY
+ drawH
)) {
1587 struct pipe_blit_info blit
;
1589 memset(&blit
, 0, sizeof(blit
));
1590 blit
.src
.resource
= rbRead
->texture
;
1591 blit
.src
.level
= rbRead
->surface
->u
.tex
.level
;
1592 blit
.src
.format
= rbRead
->texture
->format
;
1593 blit
.src
.box
.x
= readX
;
1594 blit
.src
.box
.y
= readY
;
1595 blit
.src
.box
.z
= rbRead
->surface
->u
.tex
.first_layer
;
1596 blit
.src
.box
.width
= readW
;
1597 blit
.src
.box
.height
= readH
;
1598 blit
.src
.box
.depth
= 1;
1599 blit
.dst
.resource
= rbDraw
->texture
;
1600 blit
.dst
.level
= rbDraw
->surface
->u
.tex
.level
;
1601 blit
.dst
.format
= rbDraw
->texture
->format
;
1602 blit
.dst
.box
.x
= drawX
;
1603 blit
.dst
.box
.y
= drawY
;
1604 blit
.dst
.box
.z
= rbDraw
->surface
->u
.tex
.first_layer
;
1605 blit
.dst
.box
.width
= drawW
;
1606 blit
.dst
.box
.height
= drawH
;
1607 blit
.dst
.box
.depth
= 1;
1608 blit
.mask
= PIPE_MASK_RGBA
;
1609 blit
.filter
= PIPE_TEX_FILTER_NEAREST
;
1611 if (ctx
->DrawBuffer
!= ctx
->WinSysDrawBuffer
)
1612 st_window_rectangles_to_blit(ctx
, &blit
);
1614 if (screen
->is_format_supported(screen
, blit
.src
.format
,
1615 blit
.src
.resource
->target
,
1616 blit
.src
.resource
->nr_samples
,
1617 blit
.src
.resource
->nr_storage_samples
,
1618 PIPE_BIND_SAMPLER_VIEW
) &&
1619 screen
->is_format_supported(screen
, blit
.dst
.format
,
1620 blit
.dst
.resource
->target
,
1621 blit
.dst
.resource
->nr_samples
,
1622 blit
.dst
.resource
->nr_storage_samples
,
1623 PIPE_BIND_RENDER_TARGET
)) {
1624 pipe
->blit(pipe
, &blit
);
1635 st_CopyPixels(struct gl_context
*ctx
, GLint srcx
, GLint srcy
,
1636 GLsizei width
, GLsizei height
,
1637 GLint dstx
, GLint dsty
, GLenum type
)
1639 struct st_context
*st
= st_context(ctx
);
1640 struct pipe_context
*pipe
= st
->pipe
;
1641 struct pipe_screen
*screen
= pipe
->screen
;
1642 struct st_renderbuffer
*rbRead
;
1644 struct pipe_resource
*pt
;
1645 struct pipe_sampler_view
*sv
[2] = { NULL
};
1646 struct st_fp_variant
*fpv
= NULL
;
1647 int num_sampler_view
= 1;
1648 enum pipe_format srcFormat
;
1650 GLboolean invertTex
= GL_FALSE
;
1651 GLint readX
, readY
, readW
, readH
;
1652 struct gl_pixelstore_attrib pack
= ctx
->DefaultPacking
;
1654 _mesa_update_draw_buffer_bounds(ctx
, ctx
->DrawBuffer
);
1656 st_flush_bitmap_cache(st
);
1657 st_invalidate_readpix_cache(st
);
1659 st_validate_state(st
, ST_PIPELINE_META
);
1661 if (type
== GL_DEPTH_STENCIL
) {
1662 /* XXX make this more efficient */
1663 st_CopyPixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
, GL_STENCIL
);
1664 st_CopyPixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
, GL_DEPTH
);
1668 if (type
== GL_STENCIL
) {
1669 /* can't use texturing to do stencil */
1670 copy_stencil_pixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
);
1674 if (blit_copy_pixels(ctx
, srcx
, srcy
, width
, height
, dstx
, dsty
, type
))
1678 * The subsequent code implements glCopyPixels by copying the source
1679 * pixels into a temporary texture that's then applied to a textured quad.
1680 * When we draw the textured quad, all the usual per-fragment operations
1684 st_make_passthrough_vertex_shader(st
);
1687 * Get vertex/fragment shaders
1689 if (type
== GL_COLOR
) {
1690 fpv
= get_color_fp_variant(st
);
1692 rbRead
= st_get_color_read_renderbuffer(ctx
);
1694 driver_fp
= fpv
->driver_shader
;
1696 if (ctx
->Pixel
.MapColorFlag
) {
1697 pipe_sampler_view_reference(&sv
[1],
1698 st
->pixel_xfer
.pixelmap_sampler_view
);
1702 /* compiling a new fragment shader variant added new state constants
1703 * into the constant buffer, we need to update them
1705 st_upload_constants(st
, &st
->fp
->Base
);
1708 assert(type
== GL_DEPTH
);
1709 rbRead
= st_renderbuffer(ctx
->ReadBuffer
->
1710 Attachment
[BUFFER_DEPTH
].Renderbuffer
);
1712 driver_fp
= get_drawpix_z_stencil_program(st
, GL_TRUE
, GL_FALSE
);
1715 /* Choose the format for the temporary texture. */
1716 srcFormat
= rbRead
->texture
->format
;
1717 srcBind
= PIPE_BIND_SAMPLER_VIEW
|
1718 (type
== GL_COLOR
? PIPE_BIND_RENDER_TARGET
: PIPE_BIND_DEPTH_STENCIL
);
1720 if (!screen
->is_format_supported(screen
, srcFormat
, st
->internal_target
, 0,
1722 /* srcFormat is non-renderable. Find a compatible renderable format. */
1723 if (type
== GL_DEPTH
) {
1724 srcFormat
= st_choose_format(st
, GL_DEPTH_COMPONENT
, GL_NONE
,
1725 GL_NONE
, st
->internal_target
, 0, 0,
1729 assert(type
== GL_COLOR
);
1731 if (util_format_is_float(srcFormat
)) {
1732 srcFormat
= st_choose_format(st
, GL_RGBA32F
, GL_NONE
,
1733 GL_NONE
, st
->internal_target
, 0, 0,
1736 else if (util_format_is_pure_sint(srcFormat
)) {
1737 srcFormat
= st_choose_format(st
, GL_RGBA32I
, GL_NONE
,
1738 GL_NONE
, st
->internal_target
, 0, 0,
1741 else if (util_format_is_pure_uint(srcFormat
)) {
1742 srcFormat
= st_choose_format(st
, GL_RGBA32UI
, GL_NONE
,
1743 GL_NONE
, st
->internal_target
, 0, 0,
1746 else if (util_format_is_snorm(srcFormat
)) {
1747 srcFormat
= st_choose_format(st
, GL_RGBA16_SNORM
, GL_NONE
,
1748 GL_NONE
, st
->internal_target
, 0, 0,
1752 srcFormat
= st_choose_format(st
, GL_RGBA
, GL_NONE
,
1753 GL_NONE
, st
->internal_target
, 0, 0,
1758 if (srcFormat
== PIPE_FORMAT_NONE
) {
1759 assert(0 && "cannot choose a format for src of CopyPixels");
1764 /* Invert src region if needed */
1765 if (st_fb_orientation(ctx
->ReadBuffer
) == Y_0_TOP
) {
1766 srcy
= ctx
->ReadBuffer
->Height
- srcy
- height
;
1767 invertTex
= !invertTex
;
1770 /* Clip the read region against the src buffer bounds.
1771 * We'll still allocate a temporary buffer/texture for the original
1772 * src region size but we'll only read the region which is on-screen.
1773 * This may mean that we draw garbage pixels into the dest region, but
1780 if (!_mesa_clip_readpixels(ctx
, &readX
, &readY
, &readW
, &readH
, &pack
)) {
1781 /* The source region is completely out of bounds. Do nothing.
1782 * The GL spec says "Results of copies from outside the window,
1783 * or from regions of the window that are not exposed, are
1784 * hardware dependent and undefined."
1789 readW
= MAX2(0, readW
);
1790 readH
= MAX2(0, readH
);
1792 /* Allocate the temporary texture. */
1793 pt
= alloc_texture(st
, width
, height
, srcFormat
, srcBind
);
1797 sv
[0] = st_create_texture_sampler_view(st
->pipe
, pt
);
1799 pipe_resource_reference(&pt
, NULL
);
1803 /* Copy the src region to the temporary texture. */
1805 struct pipe_blit_info blit
;
1807 memset(&blit
, 0, sizeof(blit
));
1808 blit
.src
.resource
= rbRead
->texture
;
1809 blit
.src
.level
= rbRead
->surface
->u
.tex
.level
;
1810 blit
.src
.format
= rbRead
->texture
->format
;
1811 blit
.src
.box
.x
= readX
;
1812 blit
.src
.box
.y
= readY
;
1813 blit
.src
.box
.z
= rbRead
->surface
->u
.tex
.first_layer
;
1814 blit
.src
.box
.width
= readW
;
1815 blit
.src
.box
.height
= readH
;
1816 blit
.src
.box
.depth
= 1;
1817 blit
.dst
.resource
= pt
;
1819 blit
.dst
.format
= pt
->format
;
1820 blit
.dst
.box
.x
= pack
.SkipPixels
;
1821 blit
.dst
.box
.y
= pack
.SkipRows
;
1823 blit
.dst
.box
.width
= readW
;
1824 blit
.dst
.box
.height
= readH
;
1825 blit
.dst
.box
.depth
= 1;
1826 blit
.mask
= util_format_get_mask(pt
->format
) & ~PIPE_MASK_S
;
1827 blit
.filter
= PIPE_TEX_FILTER_NEAREST
;
1829 pipe
->blit(pipe
, &blit
);
1832 /* OK, the texture 'pt' contains the src image/pixels. Now draw a
1833 * textured quad with that texture.
1835 draw_textured_quad(ctx
, dstx
, dsty
, ctx
->Current
.RasterPos
[2],
1836 width
, height
, ctx
->Pixel
.ZoomX
, ctx
->Pixel
.ZoomY
,
1841 ctx
->Current
.Attrib
[VERT_ATTRIB_COLOR0
],
1842 invertTex
, GL_FALSE
, GL_FALSE
);
1844 pipe_resource_reference(&pt
, NULL
);
1845 pipe_sampler_view_reference(&sv
[0], NULL
);
1850 void st_init_drawpixels_functions(struct dd_function_table
*functions
)
1852 functions
->DrawPixels
= st_DrawPixels
;
1853 functions
->CopyPixels
= st_CopyPixels
;
1858 st_destroy_drawpix(struct st_context
*st
)
1862 for (i
= 0; i
< ARRAY_SIZE(st
->drawpix
.zs_shaders
); i
++) {
1863 if (st
->drawpix
.zs_shaders
[i
])
1864 cso_delete_fragment_shader(st
->cso_context
,
1865 st
->drawpix
.zs_shaders
[i
]);
1868 if (st
->passthrough_vs
)
1869 cso_delete_vertex_shader(st
->cso_context
, st
->passthrough_vs
);
1871 /* Free cache data */
1872 for (i
= 0; i
< ARRAY_SIZE(st
->drawpix_cache
.entries
); i
++) {
1873 struct drawpix_cache_entry
*entry
= &st
->drawpix_cache
.entries
[i
];
1875 pipe_resource_reference(&entry
->texture
, NULL
);