brw_context.c revision f5bb775fd1f333d8e579d07a5cac1ded2bd54a2f 
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 "shader/shader_api.h"
38
39#include "brw_context.h"
40#include "brw_defines.h"
41#include "brw_draw.h"
42#include "brw_state.h"
43#include "intel_span.h"
44#include "tnl/t_pipeline.h"
45
46
47/***************************************
48 * Mesa's Driver Functions
49 ***************************************/
50
51static void brwInitDriverFunctions( struct dd_function_table *functions )
52{
53   intelInitDriverFunctions( functions );
54
55   brwInitFragProgFuncs( functions );
56   brw_init_queryobj_functions(functions);
57
58   functions->Enable = brw_enable;
59   functions->DepthRange = brw_depth_range;
60}
61
62GLboolean brwCreateContext( int api,
63			    const __GLcontextModes *mesaVis,
64			    __DRIcontext *driContextPriv,
65			    void *sharedContextPrivate)
66{
67   struct dd_function_table functions;
68   struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
69   struct intel_context *intel = &brw->intel;
70   GLcontext *ctx = &intel->ctx;
71
72   if (!brw) {
73      printf("%s: failed to alloc context\n", __FUNCTION__);
74      return GL_FALSE;
75   }
76
77   brwInitVtbl( brw );
78   brwInitDriverFunctions( &functions );
79
80   if (!intelInitContext( intel, api, mesaVis, driContextPriv,
81			  sharedContextPrivate, &functions )) {
82      printf("%s: failed to init intel context\n", __FUNCTION__);
83      FREE(brw);
84      return GL_FALSE;
85   }
86
87   /* Initialize swrast, tnl driver tables: */
88   intelInitSpanFuncs(ctx);
89
90   TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
91
92   ctx->Const.MaxDrawBuffers = BRW_MAX_DRAW_BUFFERS;
93   ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
94   ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
95   ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,
96                                     ctx->Const.MaxTextureImageUnits);
97   ctx->Const.MaxVertexTextureImageUnits = 0; /* no vertex shader textures */
98   ctx->Const.MaxCombinedTextureImageUnits =
99      ctx->Const.MaxVertexTextureImageUnits +
100      ctx->Const.MaxTextureImageUnits;
101
102   /* Mesa limits textures to 4kx4k; it would be nice to fix that someday
103    */
104   ctx->Const.MaxTextureLevels = 13;
105   ctx->Const.Max3DTextureLevels = 9;
106   ctx->Const.MaxCubeTextureLevels = 12;
107   ctx->Const.MaxTextureRectSize = (1<<12);
108
109   ctx->Const.MaxTextureMaxAnisotropy = 16.0;
110
111   /* if conformance mode is set, swrast can handle any size AA point */
112   ctx->Const.MaxPointSizeAA = 255.0;
113
114   /* We want the GLSL compiler to emit code that uses condition codes */
115   ctx->Shader.EmitCondCodes = GL_TRUE;
116   ctx->Shader.EmitNVTempInitialization = GL_TRUE;
117
118   ctx->Const.VertexProgram.MaxNativeInstructions = (16 * 1024);
119   ctx->Const.VertexProgram.MaxAluInstructions = 0;
120   ctx->Const.VertexProgram.MaxTexInstructions = 0;
121   ctx->Const.VertexProgram.MaxTexIndirections = 0;
122   ctx->Const.VertexProgram.MaxNativeAluInstructions = 0;
123   ctx->Const.VertexProgram.MaxNativeTexInstructions = 0;
124   ctx->Const.VertexProgram.MaxNativeTexIndirections = 0;
125   ctx->Const.VertexProgram.MaxNativeAttribs = 16;
126   ctx->Const.VertexProgram.MaxNativeTemps = 256;
127   ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
128   ctx->Const.VertexProgram.MaxNativeParameters = 1024;
129   ctx->Const.VertexProgram.MaxEnvParams =
130      MIN2(ctx->Const.VertexProgram.MaxNativeParameters,
131	   ctx->Const.VertexProgram.MaxEnvParams);
132
133   ctx->Const.FragmentProgram.MaxNativeInstructions = (16 * 1024);
134   ctx->Const.FragmentProgram.MaxNativeAluInstructions = (16 * 1024);
135   ctx->Const.FragmentProgram.MaxNativeTexInstructions = (16 * 1024);
136   ctx->Const.FragmentProgram.MaxNativeTexIndirections = (16 * 1024);
137   ctx->Const.FragmentProgram.MaxNativeAttribs = 12;
138   ctx->Const.FragmentProgram.MaxNativeTemps = 256;
139   ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
140   ctx->Const.FragmentProgram.MaxNativeParameters = 1024;
141   ctx->Const.FragmentProgram.MaxEnvParams =
142      MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
143	   ctx->Const.FragmentProgram.MaxEnvParams);
144
145   if (intel->is_g4x || intel->gen >= 5) {
146      brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_GM45;
147      brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_GM45;
148      brw->has_surface_tile_offset = GL_TRUE;
149      brw->has_compr4 = GL_TRUE;
150      brw->has_aa_line_parameters = GL_TRUE;
151      brw->has_pln = GL_TRUE;
152  } else {
153      brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_965;
154      brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_965;
155   }
156
157   /* WM maximum threads is number of EUs times number of threads per EU. */
158   if (intel->gen == 5) {
159      brw->urb.size = 1024;
160      brw->vs_max_threads = 72;
161      brw->wm_max_threads = 12 * 6;
162   } else if (intel->is_g4x) {
163      brw->urb.size = 384;
164      brw->vs_max_threads = 32;
165      brw->wm_max_threads = 10 * 5;
166   } else if (intel->gen < 6) {
167      brw->urb.size = 256;
168      brw->vs_max_threads = 16;
169      brw->wm_max_threads = 8 * 4;
170      brw->has_negative_rhw_bug = GL_TRUE;
171   }
172
173   if (INTEL_DEBUG & DEBUG_SINGLE_THREAD) {
174      brw->vs_max_threads = 1;
175      brw->wm_max_threads = 1;
176   }
177
178   brw_init_state( brw );
179
180   brw->curbe.last_buf = calloc(1, 4096);
181   brw->curbe.next_buf = calloc(1, 4096);
182
183   brw->state.dirty.mesa = ~0;
184   brw->state.dirty.brw = ~0;
185
186   brw->emit_state_always = 0;
187
188   ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
189   ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
190
191   brw_draw_init( brw );
192
193   /* Now that most driver functions are hooked up, initialize some of the
194    * immediate state.
195    */
196   brw_update_cc_vp(brw);
197
198   return GL_TRUE;
199}
200
201