brw_context.c revision db2993faa0211b60efd46016de5d07110cb9777a 
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 brwUseProgram(GLcontext *ctx, GLuint program)
52{
53   _mesa_use_program(ctx, program);
54}
55
56static void brwInitProgFuncs( struct dd_function_table *functions )
57{
58   functions->UseProgram = brwUseProgram;
59}
60static void brwInitDriverFunctions( struct dd_function_table *functions )
61{
62   intelInitDriverFunctions( functions );
63
64   brwInitFragProgFuncs( functions );
65   brwInitProgFuncs( functions );
66   brw_init_queryobj_functions(functions);
67}
68
69GLboolean brwCreateContext( int api,
70			    const __GLcontextModes *mesaVis,
71			    __DRIcontext *driContextPriv,
72			    void *sharedContextPrivate)
73{
74   struct dd_function_table functions;
75   struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
76   struct intel_context *intel = &brw->intel;
77   GLcontext *ctx = &intel->ctx;
78
79   if (!brw) {
80      printf("%s: failed to alloc context\n", __FUNCTION__);
81      return GL_FALSE;
82   }
83
84   brwInitVtbl( brw );
85   brwInitDriverFunctions( &functions );
86
87   if (!intelInitContext( intel, api, mesaVis, driContextPriv,
88			  sharedContextPrivate, &functions )) {
89      printf("%s: failed to init intel context\n", __FUNCTION__);
90      FREE(brw);
91      return GL_FALSE;
92   }
93
94   /* Initialize swrast, tnl driver tables: */
95   intelInitSpanFuncs(ctx);
96
97   TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
98
99   ctx->Const.MaxDrawBuffers = BRW_MAX_DRAW_BUFFERS;
100   ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
101   ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
102   ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,
103                                     ctx->Const.MaxTextureImageUnits);
104   ctx->Const.MaxVertexTextureImageUnits = 0; /* no vertex shader textures */
105   ctx->Const.MaxCombinedTextureImageUnits =
106      ctx->Const.MaxVertexTextureImageUnits +
107      ctx->Const.MaxTextureImageUnits;
108
109   /* Mesa limits textures to 4kx4k; it would be nice to fix that someday
110    */
111   ctx->Const.MaxTextureLevels = 13;
112   ctx->Const.Max3DTextureLevels = 9;
113   ctx->Const.MaxCubeTextureLevels = 12;
114   ctx->Const.MaxTextureRectSize = (1<<12);
115
116   ctx->Const.MaxTextureMaxAnisotropy = 16.0;
117
118   /* if conformance mode is set, swrast can handle any size AA point */
119   ctx->Const.MaxPointSizeAA = 255.0;
120
121   /* We want the GLSL compiler to emit code that uses condition codes */
122   ctx->Shader.EmitCondCodes = GL_TRUE;
123   ctx->Shader.EmitNVTempInitialization = GL_TRUE;
124
125   ctx->Const.VertexProgram.MaxNativeInstructions = (16 * 1024);
126   ctx->Const.VertexProgram.MaxAluInstructions = 0;
127   ctx->Const.VertexProgram.MaxTexInstructions = 0;
128   ctx->Const.VertexProgram.MaxTexIndirections = 0;
129   ctx->Const.VertexProgram.MaxNativeAluInstructions = 0;
130   ctx->Const.VertexProgram.MaxNativeTexInstructions = 0;
131   ctx->Const.VertexProgram.MaxNativeTexIndirections = 0;
132   ctx->Const.VertexProgram.MaxNativeAttribs = 16;
133   ctx->Const.VertexProgram.MaxNativeTemps = 256;
134   ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
135   ctx->Const.VertexProgram.MaxNativeParameters = 1024;
136   ctx->Const.VertexProgram.MaxEnvParams =
137      MIN2(ctx->Const.VertexProgram.MaxNativeParameters,
138	   ctx->Const.VertexProgram.MaxEnvParams);
139
140   ctx->Const.FragmentProgram.MaxNativeInstructions = (16 * 1024);
141   ctx->Const.FragmentProgram.MaxNativeAluInstructions = (16 * 1024);
142   ctx->Const.FragmentProgram.MaxNativeTexInstructions = (16 * 1024);
143   ctx->Const.FragmentProgram.MaxNativeTexIndirections = (16 * 1024);
144   ctx->Const.FragmentProgram.MaxNativeAttribs = 12;
145   ctx->Const.FragmentProgram.MaxNativeTemps = 256;
146   ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
147   ctx->Const.FragmentProgram.MaxNativeParameters = 1024;
148   ctx->Const.FragmentProgram.MaxEnvParams =
149      MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
150	   ctx->Const.FragmentProgram.MaxEnvParams);
151
152   if (intel->is_g4x || intel->gen >= 5) {
153      brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_GM45;
154      brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_GM45;
155      brw->has_surface_tile_offset = GL_TRUE;
156      brw->has_compr4 = GL_TRUE;
157      brw->has_aa_line_parameters = GL_TRUE;
158      brw->has_pln = GL_TRUE;
159  } else {
160      brw->CMD_VF_STATISTICS = CMD_VF_STATISTICS_965;
161      brw->CMD_PIPELINE_SELECT = CMD_PIPELINE_SELECT_965;
162   }
163
164   /* WM maximum threads is number of EUs times number of threads per EU. */
165   if (intel->gen == 5) {
166      brw->urb.size = 1024;
167      brw->vs_max_threads = 72;
168      brw->wm_max_threads = 12 * 6;
169   } else if (intel->is_g4x) {
170      brw->urb.size = 384;
171      brw->vs_max_threads = 32;
172      brw->wm_max_threads = 10 * 5;
173   } else if (intel->gen < 6) {
174      brw->urb.size = 256;
175      brw->vs_max_threads = 16;
176      brw->wm_max_threads = 8 * 4;
177      brw->has_negative_rhw_bug = GL_TRUE;
178   }
179
180   if (INTEL_DEBUG & DEBUG_SINGLE_THREAD) {
181      brw->vs_max_threads = 1;
182      brw->wm_max_threads = 1;
183   }
184
185   brw_init_state( brw );
186
187   brw->state.dirty.mesa = ~0;
188   brw->state.dirty.brw = ~0;
189
190   brw->emit_state_always = 0;
191
192   ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
193   ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
194
195   make_empty_list(&brw->query.active_head);
196
197   brw_draw_init( brw );
198
199   return GL_TRUE;
200}
201
202