1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * Copyright 2011 Intel Corporation
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Chad Versace <chad@chad-versace.us>
30 **************************************************************************/
34 #include "main/glheader.h"
35 #include "main/macros.h"
36 #include "main/mtypes.h"
37 #include "main/colormac.h"
38 #include "main/renderbuffer.h"
40 #include "intel_buffers.h"
41 #include "intel_fbo.h"
42 #include "intel_mipmap_tree.h"
43 #include "intel_screen.h"
44 #include "intel_span.h"
45 #include "intel_regions.h"
46 #include "intel_tex.h"
48 #include "swrast/swrast.h"
49 #include "swrast/s_renderbuffer.h"
52 intel_set_span_functions(struct intel_context
*intel
,
53 struct gl_renderbuffer
*rb
);
59 struct intel_renderbuffer *irb = intel_renderbuffer(rb); \
60 int minx = 0, miny = 0; \
61 int maxx = rb->Width; \
62 int maxy = rb->Height; \
63 int pitch = rb->RowStride * irb->mt->region->cpp; \
64 void *buf = rb->Data; \
69 #define HW_ENDCLIPLOOP()
71 #define Y_FLIP(_y) (_y)
77 /* r5g6b5 color span and pixel functions */
78 #define SPANTMP_PIXEL_FMT GL_RGB
79 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
80 #define TAG(x) intel_##x##_RGB565
81 #define TAG2(x,y) intel_##x##y_RGB565
84 /* a4r4g4b4 color span and pixel functions */
85 #define SPANTMP_PIXEL_FMT GL_BGRA
86 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_4_4_4_4_REV
87 #define TAG(x) intel_##x##_ARGB4444
88 #define TAG2(x,y) intel_##x##y_ARGB4444
91 /* a1r5g5b5 color span and pixel functions */
92 #define SPANTMP_PIXEL_FMT GL_BGRA
93 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_1_5_5_5_REV
94 #define TAG(x) intel_##x##_ARGB1555
95 #define TAG2(x,y) intel_##x##y##_ARGB1555
98 /* a8r8g8b8 color span and pixel functions */
99 #define SPANTMP_PIXEL_FMT GL_BGRA
100 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
101 #define TAG(x) intel_##x##_ARGB8888
102 #define TAG2(x,y) intel_##x##y##_ARGB8888
103 #include "spantmp2.h"
105 /* x8r8g8b8 color span and pixel functions */
106 #define SPANTMP_PIXEL_FMT GL_BGR
107 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
108 #define TAG(x) intel_##x##_xRGB8888
109 #define TAG2(x,y) intel_##x##y##_xRGB8888
110 #include "spantmp2.h"
112 /* a8 color span and pixel functions */
113 #define SPANTMP_PIXEL_FMT GL_ALPHA
114 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_BYTE
115 #define TAG(x) intel_##x##_A8
116 #define TAG2(x,y) intel_##x##y##_A8
117 #include "spantmp2.h"
120 * \brief Get pointer offset into stencil buffer.
122 * The stencil buffer is W tiled. Since the GTT is incapable of W fencing, we
123 * must decode the tile's layout in software.
126 * - PRM, 2011 Sandy Bridge, Volume 1, Part 2, Section 4.5.2.1 W-Major Tile
128 * - PRM, 2011 Sandy Bridge, Volume 1, Part 2, Section 4.5.3 Tiling Algorithm
130 * Even though the returned offset is always positive, the return type is
132 * commit e8b1c6d6f55f5be3bef25084fdd8b6127517e137
133 * mesa: Fix return type of _mesa_get_format_bytes() (#37351)
136 intel_offset_S8(uint32_t stride
, uint32_t x
, uint32_t y
)
138 uint32_t tile_size
= 4096;
139 uint32_t tile_width
= 64;
140 uint32_t tile_height
= 64;
141 uint32_t row_size
= 64 * stride
;
143 uint32_t tile_x
= x
/ tile_width
;
144 uint32_t tile_y
= y
/ tile_height
;
146 /* The byte's address relative to the tile's base addres. */
147 uint32_t byte_x
= x
% tile_width
;
148 uint32_t byte_y
= y
% tile_height
;
150 uintptr_t u
= tile_y
* row_size
154 + 32 * ((byte_y
/ 4) % 2)
155 + 16 * ((byte_x
/ 4) % 2)
156 + 8 * ((byte_y
/ 2) % 2)
157 + 4 * ((byte_x
/ 2) % 2)
164 * An additional offset is needed which is not documented in the PRM.
166 * if ((byte_x / 8) % 2 == 1) {
167 * if ((byte_y / 8) % 2) == 0) {
174 * The offset is expressed more tersely as
175 * u += ((int) x & 0x8) * (8 - (((int) y & 0x8) << 1));
182 intel_renderbuffer_map(struct intel_context
*intel
, struct gl_renderbuffer
*rb
)
184 struct gl_context
*ctx
= &intel
->ctx
;
185 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
193 /* Renderbuffer is already mapped. This usually happens when a single
194 * buffer is attached to the framebuffer's depth and stencil attachment
200 ctx
->Driver
.MapRenderbuffer(ctx
, rb
, 0, 0, rb
->Width
, rb
->Height
,
201 GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
,
204 rb
->RowStride
= stride
/ _mesa_get_format_bytes(rb
->Format
);
206 intel_set_span_functions(intel
, rb
);
210 intel_renderbuffer_unmap(struct intel_context
*intel
,
211 struct gl_renderbuffer
*rb
)
213 struct gl_context
*ctx
= &intel
->ctx
;
214 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
220 /* Renderbuffer is already unmapped. This usually happens when a single
221 * buffer is attached to the framebuffer's depth and stencil attachment
227 ctx
->Driver
.UnmapRenderbuffer(ctx
, rb
);
236 intel_framebuffer_map(struct intel_context
*intel
, struct gl_framebuffer
*fb
)
240 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
241 intel_renderbuffer_map(intel
, fb
->Attachment
[i
].Renderbuffer
);
244 intel_check_front_buffer_rendering(intel
);
248 intel_framebuffer_unmap(struct intel_context
*intel
, struct gl_framebuffer
*fb
)
252 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
253 intel_renderbuffer_unmap(intel
, fb
->Attachment
[i
].Renderbuffer
);
258 * Resolve all buffers that will be mapped by intelSpanRenderStart().
260 * Resolve the depth buffer of each enabled texture and of the read and draw
263 * (Note: In the future this will also perform MSAA resolves.)
266 intel_span_resolve_buffers(struct intel_context
*intel
)
268 struct gl_context
*ctx
= &intel
->ctx
;
269 struct intel_renderbuffer
*draw_irb
;
270 struct intel_renderbuffer
*read_irb
;
271 struct intel_texture_object
*tex_obj
;
273 /* Resolve depth buffer of each enabled texture. */
274 for (int i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
275 if (!ctx
->Texture
.Unit
[i
]._ReallyEnabled
)
277 tex_obj
= intel_texture_object(ctx
->Texture
.Unit
[i
]._Current
);
278 intel_finalize_mipmap_tree(intel
, i
);
279 if (!tex_obj
|| !tex_obj
->mt
)
281 intel_miptree_all_slices_resolve_depth(intel
, tex_obj
->mt
);
284 /* Resolve each attached depth buffer. */
285 draw_irb
= intel_get_renderbuffer(ctx
->DrawBuffer
, BUFFER_DEPTH
);
286 read_irb
= intel_get_renderbuffer(ctx
->ReadBuffer
, BUFFER_DEPTH
);
288 intel_renderbuffer_resolve_depth(intel
, draw_irb
);
289 if (read_irb
!= draw_irb
&& read_irb
)
290 intel_renderbuffer_resolve_depth(intel
, read_irb
);
294 * Map the regions needed by intelSpanRenderStart().
297 intel_span_map_buffers(struct intel_context
*intel
)
299 struct gl_context
*ctx
= &intel
->ctx
;
300 struct intel_texture_object
*tex_obj
;
302 for (int i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
303 if (!ctx
->Texture
.Unit
[i
]._ReallyEnabled
)
305 tex_obj
= intel_texture_object(ctx
->Texture
.Unit
[i
]._Current
);
306 intel_finalize_mipmap_tree(intel
, i
);
307 intel_tex_map_images(intel
, tex_obj
,
308 GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
);
311 intel_framebuffer_map(intel
, ctx
->DrawBuffer
);
312 if (ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
313 intel_framebuffer_map(intel
, ctx
->ReadBuffer
);
318 * Prepare for software rendering. Map current read/draw framebuffers'
319 * renderbuffes and all currently bound texture objects.
321 * Old note: Moved locking out to get reasonable span performance.
324 intelSpanRenderStart(struct gl_context
* ctx
)
326 struct intel_context
*intel
= intel_context(ctx
);
329 intel_prepare_render(intel
);
330 intel_span_resolve_buffers(intel
);
332 intel_span_map_buffers(intel
);
336 * Called when done software rendering. Unmap the buffers we mapped in
337 * the above function.
340 intelSpanRenderFinish(struct gl_context
* ctx
)
342 struct intel_context
*intel
= intel_context(ctx
);
347 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
348 if (ctx
->Texture
.Unit
[i
]._ReallyEnabled
) {
349 struct gl_texture_object
*texObj
= ctx
->Texture
.Unit
[i
]._Current
;
350 intel_tex_unmap_images(intel
, intel_texture_object(texObj
));
354 intel_framebuffer_unmap(intel
, ctx
->DrawBuffer
);
355 if (ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
356 intel_framebuffer_unmap(intel
, ctx
->ReadBuffer
);
362 intelInitSpanFuncs(struct gl_context
* ctx
)
364 struct swrast_device_driver
*swdd
= _swrast_GetDeviceDriverReference(ctx
);
365 swdd
->SpanRenderStart
= intelSpanRenderStart
;
366 swdd
->SpanRenderFinish
= intelSpanRenderFinish
;
370 intel_map_vertex_shader_textures(struct gl_context
*ctx
)
372 struct intel_context
*intel
= intel_context(ctx
);
375 if (ctx
->VertexProgram
._Current
== NULL
)
378 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
379 if (ctx
->Texture
.Unit
[i
]._ReallyEnabled
&&
380 ctx
->VertexProgram
._Current
->Base
.TexturesUsed
[i
] != 0) {
381 struct gl_texture_object
*texObj
= ctx
->Texture
.Unit
[i
]._Current
;
383 intel_tex_map_images(intel
, intel_texture_object(texObj
),
384 GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
);
390 intel_unmap_vertex_shader_textures(struct gl_context
*ctx
)
392 struct intel_context
*intel
= intel_context(ctx
);
395 if (ctx
->VertexProgram
._Current
== NULL
)
398 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
399 if (ctx
->Texture
.Unit
[i
]._ReallyEnabled
&&
400 ctx
->VertexProgram
._Current
->Base
.TexturesUsed
[i
] != 0) {
401 struct gl_texture_object
*texObj
= ctx
->Texture
.Unit
[i
]._Current
;
403 intel_tex_unmap_images(intel
, intel_texture_object(texObj
));
408 typedef void (*span_init_func
)(struct gl_renderbuffer
*rb
);
410 static span_init_func intel_span_init_funcs
[MESA_FORMAT_COUNT
] =
412 [MESA_FORMAT_A8
] = intel_InitPointers_A8
,
413 [MESA_FORMAT_RGB565
] = intel_InitPointers_RGB565
,
414 [MESA_FORMAT_ARGB4444
] = intel_InitPointers_ARGB4444
,
415 [MESA_FORMAT_ARGB1555
] = intel_InitPointers_ARGB1555
,
416 [MESA_FORMAT_XRGB8888
] = intel_InitPointers_xRGB8888
,
417 [MESA_FORMAT_ARGB8888
] = intel_InitPointers_ARGB8888
,
418 [MESA_FORMAT_SARGB8
] = intel_InitPointers_ARGB8888
,
419 [MESA_FORMAT_Z16
] = _swrast_set_renderbuffer_accessors
,
420 [MESA_FORMAT_X8_Z24
] = _swrast_set_renderbuffer_accessors
,
421 [MESA_FORMAT_S8_Z24
] = _swrast_set_renderbuffer_accessors
,
422 [MESA_FORMAT_S8
] = _swrast_set_renderbuffer_accessors
,
423 [MESA_FORMAT_R8
] = _swrast_set_renderbuffer_accessors
,
424 [MESA_FORMAT_GR88
] = _swrast_set_renderbuffer_accessors
,
425 [MESA_FORMAT_R16
] = _swrast_set_renderbuffer_accessors
,
426 [MESA_FORMAT_RG1616
] = _swrast_set_renderbuffer_accessors
,
427 [MESA_FORMAT_RGBA_FLOAT32
] = _swrast_set_renderbuffer_accessors
,
428 [MESA_FORMAT_RG_FLOAT32
] = _swrast_set_renderbuffer_accessors
,
429 [MESA_FORMAT_R_FLOAT32
] = _swrast_set_renderbuffer_accessors
,
430 [MESA_FORMAT_INTENSITY_FLOAT32
] = _swrast_set_renderbuffer_accessors
,
431 [MESA_FORMAT_LUMINANCE_FLOAT32
] = _swrast_set_renderbuffer_accessors
,
435 intel_span_supports_format(gl_format format
)
437 /* Rendering to/from integer textures will be done using MapRenderbuffer,
438 * rather than coding up new paths through GetRow/PutRow(), so claim support
439 * for those formats in here for now.
441 return (intel_span_init_funcs
[format
] != NULL
||
442 _mesa_is_format_integer_color(format
));
446 * Plug in appropriate span read/write functions for the given renderbuffer.
447 * These are used for the software fallbacks.
450 intel_set_span_functions(struct intel_context
*intel
,
451 struct gl_renderbuffer
*rb
)
453 struct intel_renderbuffer
*irb
= (struct intel_renderbuffer
*) rb
;
455 assert(intel_span_init_funcs
[irb
->Base
.Format
]);
456 intel_span_init_funcs
[irb
->Base
.Format
](rb
);
458 if (rb
->DataType
== GL_NONE
) {
460 "renderbuffer format %s is missing "
461 "intel_mesa_format_to_rb_datatype() support.",
462 _mesa_get_format_name(rb
->Format
));