brw_context.c revision 35c127362f7b0c186923934f34148de319093cbf 
1/*
2 Copyright (C) Intel Corp.  2006.  All Rights Reserved.
3 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
4 develop this 3D driver.
5
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:
13
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.
17
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.
25
26 **********************************************************************/
27 /*
28  * Authors:
29  *   Keith Whitwell <keith@tungstengraphics.com>
30  */
31
32
33#include "main/imports.h"
34#include "main/api_noop.h"
35#include "main/macros.h"
36#include "main/simple_list.h"
37#include "brw_context.h"
38#include "brw_defines.h"
39#include "brw_draw.h"
40#include "brw_state.h"
41#include "intel_span.h"
42#include "tnl/t_pipeline.h"
43
44
45/***************************************
46 * Mesa's Driver Functions
47 ***************************************/
48
49static void brwInitDriverFunctions( struct dd_function_table *functions )
50{
51   intelInitDriverFunctions( functions );
52
53   brwInitFragProgFuncs( functions );
54   brw_init_queryobj_functions(functions);
55
56   functions->Enable = brw_enable;
57   functions->DepthRange = brw_depth_range;
58}
59
60GLboolean brwCreateContext( int api,
61			    const __GLcontextModes *mesaVis,
62			    __DRIcontext *driContextPriv,
63			    void *sharedContextPrivate)
64{
65   struct dd_function_table functions;
66   struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
67   struct intel_context *intel = &brw->intel;
68   GLcontext *ctx = &intel->ctx;
69
70   if (!brw) {
71      printf("%s: failed to alloc context\n", __FUNCTION__);
72      return GL_FALSE;
73   }
74
75   brwInitVtbl( brw );
76   brwInitDriverFunctions( &functions );
77
78   if (!intelInitContext( intel, api, mesaVis, driContextPriv,
79			  sharedContextPrivate, &functions )) {
80      printf("%s: failed to init intel context\n", __FUNCTION__);
81      FREE(brw);
82      return GL_FALSE;
83   }
84
85   /* Initialize swrast, tnl driver tables: */
86   intelInitSpanFuncs(ctx);
87
88   TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
89
90   ctx->Const.MaxDrawBuffers = BRW_MAX_DRAW_BUFFERS;
91   ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
92   ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
93   ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,
94                                     ctx->Const.MaxTextureImageUnits);
95   ctx->Const.MaxVertexTextureImageUnits = 0; /* no vertex shader textures */
96   ctx->Const.MaxCombinedTextureImageUnits =
97      ctx->Const.MaxVertexTextureImageUnits +
98      ctx->Const.MaxTextureImageUnits;
99
100   /* Mesa limits textures to 4kx4k; it would be nice to fix that someday
101    */
102   ctx->Const.MaxTextureLevels = 13;
103   ctx->Const.Max3DTextureLevels = 9;
104   ctx->Const.MaxCubeTextureLevels = 12;
105   ctx->Const.MaxTextureRectSize = (1<<12);
106
107   ctx->Const.MaxTextureMaxAnisotropy = 16.0;
108
109   /* if conformance mode is set, swrast can handle any size AA point */
110   ctx->Const.MaxPointSizeAA = 255.0;
111
112   /* We want the GLSL compiler to emit code that uses condition codes */
113   ctx->Shader.EmitCondCodes = GL_TRUE;
114   ctx->Shader.EmitNVTempInitialization = GL_TRUE;
115
116   ctx->Const.VertexProgram.MaxNativeInstructions = (16 * 1024);
117   ctx->Const.VertexProgram.MaxAluInstructions = 0;
118   ctx->Const.VertexProgram.MaxTexInstructions = 0;
119   ctx->Const.VertexProgram.MaxTexIndirections = 0;
120   ctx->Const.VertexProgram.MaxNativeAluInstructions = 0;
121   ctx->Const.VertexProgram.MaxNativeTexInstructions = 0;
122   ctx->Const.VertexProgram.MaxNativeTexIndirections = 0;
123   ctx->Const.VertexProgram.MaxNativeAttribs = 16;
124   ctx->Const.VertexProgram.MaxNativeTemps = 256;
125   ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
126   ctx->Const.VertexProgram.MaxNativeParameters = 1024;
127   ctx->Const.VertexProgram.MaxEnvParams =
128      MIN2(ctx->Const.VertexProgram.MaxNativeParameters,
129	   ctx->Const.VertexProgram.MaxEnvParams);
130
131   ctx->Const.FragmentProgram.MaxNativeInstructions = (16 * 1024);
132   ctx->Const.FragmentProgram.MaxNativeAluInstructions = (16 * 1024);
133   ctx->Const.FragmentProgram.MaxNativeTexInstructions = (16 * 1024);
134   ctx->Const.FragmentProgram.MaxNativeTexIndirections = (16 * 1024);
135   ctx->Const.FragmentProgram.MaxNativeAttribs = 12;
136   ctx->Const.FragmentProgram.MaxNativeTemps = 256;
137   ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
138   ctx->Const.FragmentProgram.MaxNativeParameters = 1024;
139   ctx->Const.FragmentProgram.MaxEnvParams =
140      MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
141	   ctx->Const.FragmentProgram.MaxEnvParams);
142
143   if (intel->is_g4x || intel->gen >= 5) {
144      brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_GM45;
145      brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_GM45;
146      brw->has_surface_tile_offset = GL_TRUE;
147      if (intel->gen < 6)
148	  brw->has_compr4 = GL_TRUE;
149      brw->has_aa_line_parameters = GL_TRUE;
150      brw->has_pln = GL_TRUE;
151  } else {
152      brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_965;
153      brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_965;
154   }
155
156   /* WM maximum threads is number of EUs times number of threads per EU. */
157   if (intel->gen >= 6) {
158      brw->urb.size = 1024;
159      brw->vs_max_threads = 60;
160      brw->wm_max_threads = 80;
161   } else if (intel->gen == 5) {
162      brw->urb.size = 1024;
163      brw->vs_max_threads = 72;
164      brw->wm_max_threads = 12 * 6;
165   } else if (intel->is_g4x) {
166      brw->urb.size = 384;
167      brw->vs_max_threads = 32;
168      brw->wm_max_threads = 10 * 5;
169   } else if (intel->gen < 6) {
170      brw->urb.size = 256;
171      brw->vs_max_threads = 16;
172      brw->wm_max_threads = 8 * 4;
173      brw->has_negative_rhw_bug = GL_TRUE;
174   }
175
176   if (INTEL_DEBUG & DEBUG_SINGLE_THREAD) {
177      brw->vs_max_threads = 1;
178      brw->wm_max_threads = 1;
179   }
180
181   brw_init_state( brw );
182
183   brw->curbe.last_buf = calloc(1, 4096);
184   brw->curbe.next_buf = calloc(1, 4096);
185
186   brw->state.dirty.mesa = ~0;
187   brw->state.dirty.brw = ~0;
188
189   brw->emit_state_always = 0;
190
191   ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
192   ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
193
194   brw_draw_init( brw );
195
196   /* Now that most driver functions are hooked up, initialize some of the
197    * immediate state.
198    */
199   brw_update_cc_vp(brw);
200
201   return GL_TRUE;
202}
203
204