2 Copyright (C) Intel Corp. 2006. All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
6 Permission is hereby granted, free of charge, to any person obtaining
7 a 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, sublicense, 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
16 portions of the Software.
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **********************************************************************/
29 * Keith Whitwell <keith@tungstengraphics.com>
33 #include "main/imports.h"
34 #include "main/macros.h"
35 #include "main/simple_list.h"
37 #include "vbo/vbo_context.h"
39 #include "brw_context.h"
40 #include "brw_defines.h"
42 #include "brw_state.h"
44 #include "intel_fbo.h"
45 #include "intel_mipmap_tree.h"
46 #include "intel_regions.h"
47 #include "intel_span.h"
48 #include "intel_tex.h"
49 #include "intel_tex_obj.h"
51 #include "tnl/t_pipeline.h"
52 #include "glsl/ralloc.h"
54 /***************************************
55 * Mesa's Driver Functions
56 ***************************************/
58 static void brwInitDriverFunctions(struct intel_screen
*screen
,
59 struct dd_function_table
*functions
)
61 intelInitDriverFunctions( functions
);
63 brwInitFragProgFuncs( functions
);
64 brw_init_queryobj_functions(functions
);
66 functions
->BeginTransformFeedback
= brw_begin_transform_feedback
;
69 functions
->EndTransformFeedback
= gen7_end_transform_feedback
;
71 functions
->EndTransformFeedback
= brw_end_transform_feedback
;
75 brwCreateContext(int api
,
76 const struct gl_config
*mesaVis
,
77 __DRIcontext
*driContextPriv
,
78 unsigned major_version
,
79 unsigned minor_version
,
82 void *sharedContextPrivate
)
84 __DRIscreen
*sPriv
= driContextPriv
->driScreenPriv
;
85 struct intel_screen
*screen
= sPriv
->driverPrivate
;
86 struct dd_function_table functions
;
89 /* Filter against the requested API and version.
93 #ifdef TEXTURE_FLOAT_ENABLED
94 const unsigned max_version
=
96 (screen
->gen
== 7 && screen
->kernel_has_gen7_sol_reset
))
99 const unsigned max_version
= 21;
101 const unsigned req_version
= major_version
* 10 + minor_version
;
103 if (req_version
> max_version
) {
104 *error
= __DRI_CTX_ERROR_BAD_VERSION
;
112 case API_OPENGL_CORE
: {
113 #ifdef TEXTURE_FLOAT_ENABLED
114 const unsigned max_version
=
116 (screen
->gen
== 7 && screen
->kernel_has_gen7_sol_reset
))
118 const unsigned req_version
= major_version
* 10 + minor_version
;
120 if (req_version
> max_version
) {
121 *error
= (max_version
== 0)
122 ? __DRI_CTX_ERROR_BAD_API
: __DRI_CTX_ERROR_BAD_VERSION
;
127 *error
= __DRI_CTX_ERROR_BAD_API
;
132 *error
= __DRI_CTX_ERROR_BAD_API
;
136 struct brw_context
*brw
= rzalloc(NULL
, struct brw_context
);
138 printf("%s: failed to alloc context\n", __FUNCTION__
);
139 *error
= __DRI_CTX_ERROR_NO_MEMORY
;
143 brwInitDriverFunctions(screen
, &functions
);
145 struct intel_context
*intel
= &brw
->intel
;
146 struct gl_context
*ctx
= &intel
->ctx
;
148 if (!intelInitContext( intel
, api
, mesaVis
, driContextPriv
,
149 sharedContextPrivate
, &functions
)) {
150 printf("%s: failed to init intel context\n", __FUNCTION__
);
152 *error
= __DRI_CTX_ERROR_NO_MEMORY
;
158 brw_init_surface_formats(brw
);
160 /* Initialize swrast, tnl driver tables: */
161 intelInitSpanFuncs(ctx
);
163 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
165 tnl
->Driver
.RunPipeline
= _tnl_run_pipeline
;
167 ctx
->Const
.MaxDualSourceDrawBuffers
= 1;
168 ctx
->Const
.MaxDrawBuffers
= BRW_MAX_DRAW_BUFFERS
;
169 ctx
->Const
.MaxTextureImageUnits
= BRW_MAX_TEX_UNIT
;
170 ctx
->Const
.MaxTextureCoordUnits
= 8; /* Mesa limit */
171 ctx
->Const
.MaxTextureUnits
= MIN2(ctx
->Const
.MaxTextureCoordUnits
,
172 ctx
->Const
.MaxTextureImageUnits
);
173 ctx
->Const
.MaxVertexTextureImageUnits
= BRW_MAX_TEX_UNIT
;
174 ctx
->Const
.MaxCombinedTextureImageUnits
=
175 ctx
->Const
.MaxVertexTextureImageUnits
+
176 ctx
->Const
.MaxTextureImageUnits
;
178 ctx
->Const
.MaxTextureLevels
= 14; /* 8192 */
179 if (ctx
->Const
.MaxTextureLevels
> MAX_TEXTURE_LEVELS
)
180 ctx
->Const
.MaxTextureLevels
= MAX_TEXTURE_LEVELS
;
181 ctx
->Const
.Max3DTextureLevels
= 9;
182 ctx
->Const
.MaxCubeTextureLevels
= 12;
185 ctx
->Const
.MaxArrayTextureLayers
= 2048;
187 ctx
->Const
.MaxArrayTextureLayers
= 512;
189 ctx
->Const
.MaxTextureRectSize
= (1<<12);
191 ctx
->Const
.MaxTextureMaxAnisotropy
= 16.0;
193 /* Hardware only supports a limited number of transform feedback buffers.
194 * So we need to override the Mesa default (which is based only on software
197 ctx
->Const
.MaxTransformFeedbackBuffers
= BRW_MAX_SOL_BUFFERS
;
199 /* On Gen6, in the worst case, we use up one binding table entry per
200 * transform feedback component (see comments above the definition of
201 * BRW_MAX_SOL_BINDINGS, in brw_context.h), so we need to advertise a value
202 * for MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS equal to
203 * BRW_MAX_SOL_BINDINGS.
205 * In "separate components" mode, we need to divide this value by
206 * BRW_MAX_SOL_BUFFERS, so that the total number of binding table entries
207 * used up by all buffers will not exceed BRW_MAX_SOL_BINDINGS.
209 ctx
->Const
.MaxTransformFeedbackInterleavedComponents
= BRW_MAX_SOL_BINDINGS
;
210 ctx
->Const
.MaxTransformFeedbackSeparateComponents
=
211 BRW_MAX_SOL_BINDINGS
/ BRW_MAX_SOL_BUFFERS
;
214 ctx
->Const
.MaxSamples
= 4;
215 else if (intel
->gen
>= 7)
216 ctx
->Const
.MaxSamples
= 8;
218 /* if conformance mode is set, swrast can handle any size AA point */
219 ctx
->Const
.MaxPointSizeAA
= 255.0;
221 /* We want the GLSL compiler to emit code that uses condition codes */
222 for (i
= 0; i
<= MESA_SHADER_FRAGMENT
; i
++) {
223 ctx
->ShaderCompilerOptions
[i
].MaxIfDepth
= intel
->gen
< 6 ? 16 : UINT_MAX
;
224 ctx
->ShaderCompilerOptions
[i
].EmitCondCodes
= true;
225 ctx
->ShaderCompilerOptions
[i
].EmitNVTempInitialization
= true;
226 ctx
->ShaderCompilerOptions
[i
].EmitNoNoise
= true;
227 ctx
->ShaderCompilerOptions
[i
].EmitNoMainReturn
= true;
228 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectInput
= true;
229 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectOutput
= true;
231 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectUniform
=
232 (i
== MESA_SHADER_FRAGMENT
);
233 ctx
->ShaderCompilerOptions
[i
].EmitNoIndirectTemp
=
234 (i
== MESA_SHADER_FRAGMENT
);
235 ctx
->ShaderCompilerOptions
[i
].LowerClipDistance
= true;
238 ctx
->Const
.VertexProgram
.MaxNativeInstructions
= (16 * 1024);
239 ctx
->Const
.VertexProgram
.MaxAluInstructions
= 0;
240 ctx
->Const
.VertexProgram
.MaxTexInstructions
= 0;
241 ctx
->Const
.VertexProgram
.MaxTexIndirections
= 0;
242 ctx
->Const
.VertexProgram
.MaxNativeAluInstructions
= 0;
243 ctx
->Const
.VertexProgram
.MaxNativeTexInstructions
= 0;
244 ctx
->Const
.VertexProgram
.MaxNativeTexIndirections
= 0;
245 ctx
->Const
.VertexProgram
.MaxNativeAttribs
= 16;
246 ctx
->Const
.VertexProgram
.MaxNativeTemps
= 256;
247 ctx
->Const
.VertexProgram
.MaxNativeAddressRegs
= 1;
248 ctx
->Const
.VertexProgram
.MaxNativeParameters
= 1024;
249 ctx
->Const
.VertexProgram
.MaxEnvParams
=
250 MIN2(ctx
->Const
.VertexProgram
.MaxNativeParameters
,
251 ctx
->Const
.VertexProgram
.MaxEnvParams
);
253 ctx
->Const
.FragmentProgram
.MaxNativeInstructions
= (16 * 1024);
254 ctx
->Const
.FragmentProgram
.MaxNativeAluInstructions
= (16 * 1024);
255 ctx
->Const
.FragmentProgram
.MaxNativeTexInstructions
= (16 * 1024);
256 ctx
->Const
.FragmentProgram
.MaxNativeTexIndirections
= (16 * 1024);
257 ctx
->Const
.FragmentProgram
.MaxNativeAttribs
= 12;
258 ctx
->Const
.FragmentProgram
.MaxNativeTemps
= 256;
259 ctx
->Const
.FragmentProgram
.MaxNativeAddressRegs
= 0;
260 ctx
->Const
.FragmentProgram
.MaxNativeParameters
= 1024;
261 ctx
->Const
.FragmentProgram
.MaxEnvParams
=
262 MIN2(ctx
->Const
.FragmentProgram
.MaxNativeParameters
,
263 ctx
->Const
.FragmentProgram
.MaxEnvParams
);
265 /* Fragment shaders use real, 32-bit twos-complement integers for all
268 ctx
->Const
.FragmentProgram
.LowInt
.RangeMin
= 31;
269 ctx
->Const
.FragmentProgram
.LowInt
.RangeMax
= 30;
270 ctx
->Const
.FragmentProgram
.LowInt
.Precision
= 0;
271 ctx
->Const
.FragmentProgram
.HighInt
= ctx
->Const
.FragmentProgram
.MediumInt
272 = ctx
->Const
.FragmentProgram
.LowInt
;
274 /* Gen6 converts quads to polygon in beginning of 3D pipeline,
275 but we're not sure how it's actually done for vertex order,
276 that affect provoking vertex decision. Always use last vertex
277 convention for quad primitive which works as expected for now. */
279 ctx
->Const
.QuadsFollowProvokingVertexConvention
= false;
281 ctx
->Const
.QueryCounterBits
.Timestamp
= 36;
283 if (intel
->is_g4x
|| intel
->gen
>= 5) {
284 brw
->CMD_VF_STATISTICS
= GM45_3DSTATE_VF_STATISTICS
;
285 brw
->CMD_PIPELINE_SELECT
= CMD_PIPELINE_SELECT_GM45
;
286 brw
->has_surface_tile_offset
= true;
288 brw
->has_compr4
= true;
289 brw
->has_aa_line_parameters
= true;
292 brw
->CMD_VF_STATISTICS
= GEN4_3DSTATE_VF_STATISTICS
;
293 brw
->CMD_PIPELINE_SELECT
= CMD_PIPELINE_SELECT_965
;
296 /* WM maximum threads is number of EUs times number of threads per EU. */
297 if (intel
->gen
>= 7) {
298 if (intel
->gt
== 1) {
299 brw
->max_wm_threads
= 48;
300 brw
->max_vs_threads
= 36;
301 brw
->max_gs_threads
= 36;
303 brw
->urb
.max_vs_entries
= 512;
304 brw
->urb
.max_gs_entries
= 192;
305 } else if (intel
->gt
== 2) {
306 brw
->max_wm_threads
= 172;
307 brw
->max_vs_threads
= 128;
308 brw
->max_gs_threads
= 128;
310 brw
->urb
.max_vs_entries
= 704;
311 brw
->urb
.max_gs_entries
= 320;
313 assert(!"Unknown gen7 device.");
315 } else if (intel
->gen
== 6) {
316 if (intel
->gt
== 2) {
317 brw
->max_wm_threads
= 80;
318 brw
->max_vs_threads
= 60;
319 brw
->max_gs_threads
= 60;
320 brw
->urb
.size
= 64; /* volume 5c.5 section 5.1 */
321 brw
->urb
.max_vs_entries
= 256; /* volume 2a (see 3DSTATE_URB) */
322 brw
->urb
.max_gs_entries
= 256;
324 brw
->max_wm_threads
= 40;
325 brw
->max_vs_threads
= 24;
326 brw
->max_gs_threads
= 21; /* conservative; 24 if rendering disabled */
327 brw
->urb
.size
= 32; /* volume 5c.5 section 5.1 */
328 brw
->urb
.max_vs_entries
= 256; /* volume 2a (see 3DSTATE_URB) */
329 brw
->urb
.max_gs_entries
= 256;
331 brw
->urb
.gen6_gs_previously_active
= false;
332 } else if (intel
->gen
== 5) {
333 brw
->urb
.size
= 1024;
334 brw
->max_vs_threads
= 72;
335 brw
->max_gs_threads
= 32;
336 brw
->max_wm_threads
= 12 * 6;
337 } else if (intel
->is_g4x
) {
339 brw
->max_vs_threads
= 32;
340 brw
->max_gs_threads
= 2;
341 brw
->max_wm_threads
= 10 * 5;
342 } else if (intel
->gen
< 6) {
344 brw
->max_vs_threads
= 16;
345 brw
->max_gs_threads
= 2;
346 brw
->max_wm_threads
= 8 * 4;
347 brw
->has_negative_rhw_bug
= true;
350 if (intel
->gen
<= 7) {
351 brw
->needs_unlit_centroid_workaround
= true;
354 brw
->prim_restart
.in_progress
= false;
355 brw
->prim_restart
.enable_cut_index
= false;
356 intel
->hw_ctx
= drm_intel_gem_context_create(intel
->bufmgr
);
358 brw_init_state( brw
);
360 brw
->curbe
.last_buf
= calloc(1, 4096);
361 brw
->curbe
.next_buf
= calloc(1, 4096);
363 brw
->state
.dirty
.mesa
= ~0;
364 brw
->state
.dirty
.brw
= ~0;
366 brw
->emit_state_always
= 0;
368 intel
->batch
.need_workaround_flush
= true;
370 ctx
->VertexProgram
._MaintainTnlProgram
= true;
371 ctx
->FragmentProgram
._MaintainTexEnvProgram
= true;
373 brw_draw_init( brw
);
375 brw
->precompile
= driQueryOptionb(&intel
->optionCache
, "shader_precompile");
377 ctx
->Const
.NativeIntegers
= true;
378 ctx
->Const
.UniformBooleanTrue
= 1;
380 ctx
->Const
.ForceGLSLExtensionsWarn
= driQueryOptionb(&intel
->optionCache
, "force_glsl_extensions_warn");
382 ctx
->Const
.ContextFlags
= 0;
383 if ((flags
& __DRI_CTX_FLAG_FORWARD_COMPATIBLE
) != 0)
384 ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT
;
386 if ((flags
& __DRI_CTX_FLAG_DEBUG
) != 0)
387 ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_DEBUG_BIT
;