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"
51 intel_set_span_functions(struct intel_context
*intel
,
52 struct gl_renderbuffer
*rb
);
58 struct intel_renderbuffer *irb = intel_renderbuffer(rb); \
59 int minx = 0, miny = 0; \
60 int maxx = rb->Width; \
61 int maxy = rb->Height; \
62 int pitch = rb->RowStride * irb->mt->region->cpp; \
63 void *buf = rb->Data; \
68 #define HW_ENDCLIPLOOP()
70 #define Y_FLIP(_y) (_y)
76 /* r5g6b5 color span and pixel functions */
77 #define SPANTMP_PIXEL_FMT GL_RGB
78 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
79 #define TAG(x) intel_##x##_RGB565
80 #define TAG2(x,y) intel_##x##y_RGB565
83 /* a4r4g4b4 color span and pixel functions */
84 #define SPANTMP_PIXEL_FMT GL_BGRA
85 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_4_4_4_4_REV
86 #define TAG(x) intel_##x##_ARGB4444
87 #define TAG2(x,y) intel_##x##y_ARGB4444
90 /* a1r5g5b5 color span and pixel functions */
91 #define SPANTMP_PIXEL_FMT GL_BGRA
92 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_1_5_5_5_REV
93 #define TAG(x) intel_##x##_ARGB1555
94 #define TAG2(x,y) intel_##x##y##_ARGB1555
97 /* a8r8g8b8 color span and pixel functions */
98 #define SPANTMP_PIXEL_FMT GL_BGRA
99 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
100 #define TAG(x) intel_##x##_ARGB8888
101 #define TAG2(x,y) intel_##x##y##_ARGB8888
102 #include "spantmp2.h"
104 /* x8r8g8b8 color span and pixel functions */
105 #define SPANTMP_PIXEL_FMT GL_BGR
106 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
107 #define TAG(x) intel_##x##_xRGB8888
108 #define TAG2(x,y) intel_##x##y##_xRGB8888
109 #include "spantmp2.h"
111 /* a8 color span and pixel functions */
112 #define SPANTMP_PIXEL_FMT GL_ALPHA
113 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_BYTE
114 #define TAG(x) intel_##x##_A8
115 #define TAG2(x,y) intel_##x##y##_A8
116 #include "spantmp2.h"
119 * \brief Get pointer offset into stencil buffer.
121 * The stencil buffer is W tiled. Since the GTT is incapable of W fencing, we
122 * must decode the tile's layout in software.
125 * - PRM, 2011 Sandy Bridge, Volume 1, Part 2, Section 4.5.2.1 W-Major Tile
127 * - PRM, 2011 Sandy Bridge, Volume 1, Part 2, Section 4.5.3 Tiling Algorithm
129 * Even though the returned offset is always positive, the return type is
131 * commit e8b1c6d6f55f5be3bef25084fdd8b6127517e137
132 * mesa: Fix return type of _mesa_get_format_bytes() (#37351)
135 intel_offset_S8(uint32_t stride
, uint32_t x
, uint32_t y
)
137 uint32_t tile_size
= 4096;
138 uint32_t tile_width
= 64;
139 uint32_t tile_height
= 64;
140 uint32_t row_size
= 64 * stride
;
142 uint32_t tile_x
= x
/ tile_width
;
143 uint32_t tile_y
= y
/ tile_height
;
145 /* The byte's address relative to the tile's base addres. */
146 uint32_t byte_x
= x
% tile_width
;
147 uint32_t byte_y
= y
% tile_height
;
149 uintptr_t u
= tile_y
* row_size
153 + 32 * ((byte_y
/ 4) % 2)
154 + 16 * ((byte_x
/ 4) % 2)
155 + 8 * ((byte_y
/ 2) % 2)
156 + 4 * ((byte_x
/ 2) % 2)
163 * An additional offset is needed which is not documented in the PRM.
165 * if ((byte_x / 8) % 2 == 1) {
166 * if ((byte_y / 8) % 2) == 0) {
173 * The offset is expressed more tersely as
174 * u += ((int) x & 0x8) * (8 - (((int) y & 0x8) << 1));
181 intel_renderbuffer_map(struct intel_context
*intel
, struct gl_renderbuffer
*rb
)
183 struct gl_context
*ctx
= &intel
->ctx
;
184 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
192 /* Renderbuffer is already mapped. This usually happens when a single
193 * buffer is attached to the framebuffer's depth and stencil attachment
199 ctx
->Driver
.MapRenderbuffer(ctx
, rb
, 0, 0, rb
->Width
, rb
->Height
,
200 GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
,
203 rb
->RowStride
= stride
/ _mesa_get_format_bytes(rb
->Format
);
205 intel_set_span_functions(intel
, rb
);
209 intel_renderbuffer_unmap(struct intel_context
*intel
,
210 struct gl_renderbuffer
*rb
)
212 struct gl_context
*ctx
= &intel
->ctx
;
213 struct intel_renderbuffer
*irb
= intel_renderbuffer(rb
);
219 /* Renderbuffer is already unmapped. This usually happens when a single
220 * buffer is attached to the framebuffer's depth and stencil attachment
226 ctx
->Driver
.UnmapRenderbuffer(ctx
, rb
);
235 intel_framebuffer_map(struct intel_context
*intel
, struct gl_framebuffer
*fb
)
239 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
240 intel_renderbuffer_map(intel
, fb
->Attachment
[i
].Renderbuffer
);
243 intel_check_front_buffer_rendering(intel
);
247 intel_framebuffer_unmap(struct intel_context
*intel
, struct gl_framebuffer
*fb
)
251 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
252 intel_renderbuffer_unmap(intel
, fb
->Attachment
[i
].Renderbuffer
);
257 * Resolve all buffers that will be mapped by intelSpanRenderStart().
259 * Resolve the depth buffer of each enabled texture and of the read and draw
262 * (Note: In the future this will also perform MSAA resolves.)
265 intel_span_resolve_buffers(struct intel_context
*intel
)
267 struct gl_context
*ctx
= &intel
->ctx
;
268 struct intel_renderbuffer
*draw_irb
;
269 struct intel_renderbuffer
*read_irb
;
270 struct intel_texture_object
*tex_obj
;
272 /* Resolve depth buffer of each enabled texture. */
273 for (int i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
274 if (!ctx
->Texture
.Unit
[i
]._ReallyEnabled
)
276 tex_obj
= intel_texture_object(ctx
->Texture
.Unit
[i
]._Current
);
277 intel_finalize_mipmap_tree(intel
, i
);
278 if (!tex_obj
|| !tex_obj
->mt
)
280 intel_miptree_all_slices_resolve_depth(intel
, tex_obj
->mt
);
283 /* Resolve each attached depth buffer. */
284 draw_irb
= intel_get_renderbuffer(ctx
->DrawBuffer
, BUFFER_DEPTH
);
285 read_irb
= intel_get_renderbuffer(ctx
->ReadBuffer
, BUFFER_DEPTH
);
287 intel_renderbuffer_resolve_depth(intel
, draw_irb
);
288 if (read_irb
!= draw_irb
&& read_irb
)
289 intel_renderbuffer_resolve_depth(intel
, read_irb
);
293 * Map the regions needed by intelSpanRenderStart().
296 intel_span_map_buffers(struct intel_context
*intel
)
298 struct gl_context
*ctx
= &intel
->ctx
;
299 struct intel_texture_object
*tex_obj
;
301 for (int i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
302 if (!ctx
->Texture
.Unit
[i
]._ReallyEnabled
)
304 tex_obj
= intel_texture_object(ctx
->Texture
.Unit
[i
]._Current
);
305 intel_finalize_mipmap_tree(intel
, i
);
306 intel_tex_map_images(intel
, tex_obj
,
307 GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
);
310 intel_framebuffer_map(intel
, ctx
->DrawBuffer
);
311 if (ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
312 intel_framebuffer_map(intel
, ctx
->ReadBuffer
);
317 * Prepare for software rendering. Map current read/draw framebuffers'
318 * renderbuffes and all currently bound texture objects.
320 * Old note: Moved locking out to get reasonable span performance.
323 intelSpanRenderStart(struct gl_context
* ctx
)
325 struct intel_context
*intel
= intel_context(ctx
);
328 intel_prepare_render(intel
);
329 intel_span_resolve_buffers(intel
);
331 intel_span_map_buffers(intel
);
335 * Called when done software rendering. Unmap the buffers we mapped in
336 * the above function.
339 intelSpanRenderFinish(struct gl_context
* ctx
)
341 struct intel_context
*intel
= intel_context(ctx
);
346 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
347 if (ctx
->Texture
.Unit
[i
]._ReallyEnabled
) {
348 struct gl_texture_object
*texObj
= ctx
->Texture
.Unit
[i
]._Current
;
349 intel_tex_unmap_images(intel
, intel_texture_object(texObj
));
353 intel_framebuffer_unmap(intel
, ctx
->DrawBuffer
);
354 if (ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
355 intel_framebuffer_unmap(intel
, ctx
->ReadBuffer
);
361 intelInitSpanFuncs(struct gl_context
* ctx
)
363 struct swrast_device_driver
*swdd
= _swrast_GetDeviceDriverReference(ctx
);
364 swdd
->SpanRenderStart
= intelSpanRenderStart
;
365 swdd
->SpanRenderFinish
= intelSpanRenderFinish
;
369 intel_map_vertex_shader_textures(struct gl_context
*ctx
)
371 struct intel_context
*intel
= intel_context(ctx
);
374 if (ctx
->VertexProgram
._Current
== NULL
)
377 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
378 if (ctx
->Texture
.Unit
[i
]._ReallyEnabled
&&
379 ctx
->VertexProgram
._Current
->Base
.TexturesUsed
[i
] != 0) {
380 struct gl_texture_object
*texObj
= ctx
->Texture
.Unit
[i
]._Current
;
382 intel_tex_map_images(intel
, intel_texture_object(texObj
),
383 GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
);
389 intel_unmap_vertex_shader_textures(struct gl_context
*ctx
)
391 struct intel_context
*intel
= intel_context(ctx
);
394 if (ctx
->VertexProgram
._Current
== NULL
)
397 for (i
= 0; i
< ctx
->Const
.MaxTextureImageUnits
; i
++) {
398 if (ctx
->Texture
.Unit
[i
]._ReallyEnabled
&&
399 ctx
->VertexProgram
._Current
->Base
.TexturesUsed
[i
] != 0) {
400 struct gl_texture_object
*texObj
= ctx
->Texture
.Unit
[i
]._Current
;
402 intel_tex_unmap_images(intel
, intel_texture_object(texObj
));
407 typedef void (*span_init_func
)(struct gl_renderbuffer
*rb
);
409 static span_init_func intel_span_init_funcs
[MESA_FORMAT_COUNT
] =
411 [MESA_FORMAT_A8
] = intel_InitPointers_A8
,
412 [MESA_FORMAT_RGB565
] = intel_InitPointers_RGB565
,
413 [MESA_FORMAT_ARGB4444
] = intel_InitPointers_ARGB4444
,
414 [MESA_FORMAT_ARGB1555
] = intel_InitPointers_ARGB1555
,
415 [MESA_FORMAT_XRGB8888
] = intel_InitPointers_xRGB8888
,
416 [MESA_FORMAT_ARGB8888
] = intel_InitPointers_ARGB8888
,
417 [MESA_FORMAT_SARGB8
] = intel_InitPointers_ARGB8888
,
418 [MESA_FORMAT_Z16
] = _mesa_set_renderbuffer_accessors
,
419 [MESA_FORMAT_X8_Z24
] = _mesa_set_renderbuffer_accessors
,
420 [MESA_FORMAT_S8_Z24
] = _mesa_set_renderbuffer_accessors
,
421 [MESA_FORMAT_S8
] = _mesa_set_renderbuffer_accessors
,
422 [MESA_FORMAT_R8
] = _mesa_set_renderbuffer_accessors
,
423 [MESA_FORMAT_RG88
] = _mesa_set_renderbuffer_accessors
,
424 [MESA_FORMAT_R16
] = _mesa_set_renderbuffer_accessors
,
425 [MESA_FORMAT_RG1616
] = _mesa_set_renderbuffer_accessors
,
426 [MESA_FORMAT_RGBA_FLOAT32
] = _mesa_set_renderbuffer_accessors
,
427 [MESA_FORMAT_RG_FLOAT32
] = _mesa_set_renderbuffer_accessors
,
428 [MESA_FORMAT_R_FLOAT32
] = _mesa_set_renderbuffer_accessors
,
429 [MESA_FORMAT_INTENSITY_FLOAT32
] = _mesa_set_renderbuffer_accessors
,
430 [MESA_FORMAT_LUMINANCE_FLOAT32
] = _mesa_set_renderbuffer_accessors
,
434 intel_span_supports_format(gl_format format
)
436 /* Rendering to/from integer textures will be done using MapRenderbuffer,
437 * rather than coding up new paths through GetRow/PutRow(), so claim support
438 * for those formats in here for now.
440 return (intel_span_init_funcs
[format
] != NULL
||
441 _mesa_is_format_integer_color(format
));
445 * Plug in appropriate span read/write functions for the given renderbuffer.
446 * These are used for the software fallbacks.
449 intel_set_span_functions(struct intel_context
*intel
,
450 struct gl_renderbuffer
*rb
)
452 struct intel_renderbuffer
*irb
= (struct intel_renderbuffer
*) rb
;
454 assert(intel_span_init_funcs
[irb
->Base
.Format
]);
455 intel_span_init_funcs
[irb
->Base
.Format
](rb
);
457 if (rb
->DataType
== GL_NONE
) {
459 "renderbuffer format %s is missing "
460 "intel_mesa_format_to_rb_datatype() support.",
461 _mesa_get_format_name(rb
->Format
));