src/mesa/drivers/dri/i965/brw_context.c

   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/vtxfmt.h"
  37 #include "main/simple_list.h"
  38 #include "shader/shader_api.h"
  39
  40 #include "brw_context.h"
  41 #include "brw_defines.h"
  42 #include "brw_draw.h"
  43 #include "brw_state.h"
  44 #include "brw_vs.h"
  45 #include "intel_tex.h"
  46 #include "intel_blit.h"
  47 #include "intel_batchbuffer.h"
  48 #include "intel_pixel.h"
  49 #include "intel_span.h"
  50 #include "tnl/t_pipeline.h"
  51
  52 #include "utils.h"
  53
  54
  55 /***************************************
  56  * Mesa's Driver Functions
  57  ***************************************/
  58
  59 static void brwUseProgram(GLcontext *ctx, GLuint program)
  60 {
  61    _mesa_use_program(ctx, program);
  62 }
  63
  64 static void brwInitProgFuncs( struct dd_function_table *functions )
  65 {
  66    functions->UseProgram = brwUseProgram;
  67 }
  68 static void brwInitDriverFunctions( struct dd_function_table *functions )
  69 {
  70    intelInitDriverFunctions( functions );
  71
  72    brwInitFragProgFuncs( functions );
  73    brwInitProgFuncs( functions );
  74    brw_init_queryobj_functions(functions);
  75
  76    functions->Viewport = intel_viewport;
  77 }
  78
  79 GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
  80                             __DRIcontextPrivate *driContextPriv,
  81                             void *sharedContextPrivate)
  82 {
  83    struct dd_function_table functions;
  84    struct brw_context *brw = (struct brw_context *) CALLOC_STRUCT(brw_context);
  85    struct intel_context *intel = &brw->intel;
  86    GLcontext *ctx = &intel->ctx;
  87
  88    if (!brw) {
  89       _mesa_printf("%s: failed to alloc context\n", __FUNCTION__);
  90       return GL_FALSE;
  91    }
  92
  93    brwInitVtbl( brw );
  94    brwInitDriverFunctions( &functions );
  95
  96    if (!intelInitContext( intel, mesaVis, driContextPriv,
  97                           sharedContextPrivate, &functions )) {
  98       _mesa_printf("%s: failed to init intel context\n", __FUNCTION__);
  99       FREE(brw);
 100       return GL_FALSE;
 101    }
 102
 103    /* Initialize swrast, tnl driver tables: */
 104    intelInitSpanFuncs(ctx);
 105
 106    TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
 107
 108    ctx->Const.MaxDrawBuffers = BRW_MAX_DRAW_BUFFERS;
 109    ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
 110    ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
 111    ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,
 112                                      ctx->Const.MaxTextureImageUnits);
 113    ctx->Const.MaxVertexTextureImageUnits = 0; /* no vertex shader textures */
 114    ctx->Const.MaxCombinedTextureImageUnits = 0;
 115
 116    /* Mesa limits textures to 4kx4k; it would be nice to fix that someday
 117     */
 118    ctx->Const.MaxTextureLevels = 13;
 119    ctx->Const.Max3DTextureLevels = 9;
 120    ctx->Const.MaxCubeTextureLevels = 12;
 121    ctx->Const.MaxTextureRectSize = (1<<12);
 122
 123    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 124
 125    /* if conformance mode is set, swrast can handle any size AA point */
 126    ctx->Const.MaxPointSizeAA = 255.0;
 127
 128    /* We want the GLSL compiler to emit code that uses condition codes */
 129    ctx->Shader.EmitCondCodes = GL_TRUE;
 130    ctx->Shader.EmitNVTempInitialization = GL_TRUE;
 131
 132    ctx->Const.VertexProgram.MaxNativeInstructions = (16 * 1024);
 133    ctx->Const.VertexProgram.MaxAluInstructions = 0;
 134    ctx->Const.VertexProgram.MaxTexInstructions = 0;
 135    ctx->Const.VertexProgram.MaxTexIndirections = 0;
 136    ctx->Const.VertexProgram.MaxNativeAluInstructions = 0;
 137    ctx->Const.VertexProgram.MaxNativeTexInstructions = 0;
 138    ctx->Const.VertexProgram.MaxNativeTexIndirections = 0;
 139    ctx->Const.VertexProgram.MaxNativeAttribs = 16;
 140    ctx->Const.VertexProgram.MaxNativeTemps = 256;
 141    ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 142    ctx->Const.VertexProgram.MaxNativeParameters = 1024;
 143    ctx->Const.VertexProgram.MaxEnvParams =
 144       MIN2(ctx->Const.VertexProgram.MaxNativeParameters,
 145            ctx->Const.VertexProgram.MaxEnvParams);
 146
 147    ctx->Const.FragmentProgram.MaxNativeInstructions = (16 * 1024);
 148    ctx->Const.FragmentProgram.MaxNativeAluInstructions = (16 * 1024);
 149    ctx->Const.FragmentProgram.MaxNativeTexInstructions = (16 * 1024);
 150    ctx->Const.FragmentProgram.MaxNativeTexIndirections = (16 * 1024);
 151    ctx->Const.FragmentProgram.MaxNativeAttribs = 12;
 152    ctx->Const.FragmentProgram.MaxNativeTemps = 256;
 153    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0;
 154    ctx->Const.FragmentProgram.MaxNativeParameters = 1024;
 155    ctx->Const.FragmentProgram.MaxEnvParams =
 156       MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
 157            ctx->Const.FragmentProgram.MaxEnvParams);
 158
 159    brw_init_state( brw );
 160
 161    brw->state.dirty.mesa = ~0;
 162    brw->state.dirty.brw = ~0;
 163
 164    brw->emit_state_always = 0;
 165
 166    ctx->VertexProgram._MaintainTnlProgram = GL_TRUE;
 167    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 168
 169    make_empty_list(&brw->query.active_head);
 170
 171    brw_draw_init( brw );
 172
 173    return GL_TRUE;
 174 }
 175