src/mesa/drivers/dri/i915/i915_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * 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, sub license, 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 portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "i915_context.h"
  29 #include "imports.h"
  30 #include "intel_tex.h"
  31 #include "intel_tris.h"
  32 #include "tnl/t_context.h"
  33 #include "tnl/t_pipeline.h"
  34 #include "tnl/t_vertex.h"
  35
  36 #include "swrast/swrast.h"
  37 #include "swrast_setup/swrast_setup.h"
  38 #include "tnl/tnl.h"
  39
  40 #include "utils.h"
  41 #include "i915_reg.h"
  42
  43 #include "intel_regions.h"
  44 #include "intel_batchbuffer.h"
  45 #include "intel_tris.h"
  46 #include "intel_span.h"
  47 #include "intel_pixel.h"
  48
  49 /***************************************
  50  * Mesa's Driver Functions
  51  ***************************************/
  52
  53 static const struct dri_extension i915_extensions[] = {
  54    {"GL_ARB_depth_texture", NULL},
  55    {"GL_ARB_fragment_program", NULL},
  56    {"GL_ARB_shadow", NULL},
  57    {"GL_ARB_texture_non_power_of_two", NULL},
  58    {"GL_EXT_shadow_funcs", NULL},
  59    /* ARB extn won't work if not enabled */
  60    {"GL_SGIX_depth_texture", NULL},
  61    {NULL, NULL}
  62 };
  63
  64 /* Override intel default.
  65  */
  66 static void
  67 i915InvalidateState(GLcontext * ctx, GLuint new_state)
  68 {
  69    _swrast_InvalidateState(ctx, new_state);
  70    _swsetup_InvalidateState(ctx, new_state);
  71    _vbo_InvalidateState(ctx, new_state);
  72    _tnl_InvalidateState(ctx, new_state);
  73    _tnl_invalidate_vertex_state(ctx, new_state);
  74    intel_context(ctx)->NewGLState |= new_state;
  75
  76    /* Todo: gather state values under which tracked parameters become
  77     * invalidated, add callbacks for things like
  78     * ProgramLocalParameters, etc.
  79     */
  80    {
  81       struct i915_fragment_program *p =
  82          (struct i915_fragment_program *) ctx->FragmentProgram._Current;
  83       if (p && p->nr_params)
  84          p->params_uptodate = 0;
  85    }
  86
  87    if (new_state & (_NEW_FOG | _NEW_HINT | _NEW_PROGRAM))
  88       i915_update_fog(ctx);
  89 }
  90
  91
  92 static void
  93 i915InitDriverFunctions(struct dd_function_table *functions)
  94 {
  95    intelInitDriverFunctions(functions);
  96    i915InitStateFunctions(functions);
  97    i915InitTextureFuncs(functions);
  98    i915InitFragProgFuncs(functions);
  99    functions->UpdateState = i915InvalidateState;
 100 }
 101
 102
 103 extern const struct tnl_pipeline_stage *intel_pipeline[];
 104
 105 GLboolean
 106 i915CreateContext(const __GLcontextModes * mesaVis,
 107                   __DRIcontextPrivate * driContextPriv,
 108                   void *sharedContextPrivate)
 109 {
 110    struct dd_function_table functions;
 111    struct i915_context *i915 =
 112       (struct i915_context *) CALLOC_STRUCT(i915_context);
 113    struct intel_context *intel = &i915->intel;
 114    GLcontext *ctx = &intel->ctx;
 115
 116    if (!i915)
 117       return GL_FALSE;
 118
 119    if (0)
 120       _mesa_printf("\ntexmem-0-3 branch\n\n");
 121
 122    i915InitVtbl(i915);
 123    i915InitMetaFuncs(i915);
 124
 125    i915InitDriverFunctions(&functions);
 126
 127    if (!intelInitContext(intel, mesaVis, driContextPriv,
 128                          sharedContextPrivate, &functions)) {
 129       FREE(i915);
 130       return GL_FALSE;
 131    }
 132
 133    /* Initialize swrast, tnl driver tables: */
 134    intelInitSpanFuncs(ctx);
 135    intelInitTriFuncs(ctx);
 136
 137    /* Install the customized pipeline: */
 138    _tnl_destroy_pipeline(ctx);
 139    _tnl_install_pipeline(ctx, intel_pipeline);
 140
 141    if (intel->no_rast)
 142       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 143
 144    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 145    ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
 146    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 147
 148
 149    /* Advertise the full hardware capabilities.  The new memory
 150     * manager should cope much better with overload situations:
 151     */
 152    ctx->Const.MaxTextureLevels = 12;
 153    ctx->Const.Max3DTextureLevels = 9;
 154    ctx->Const.MaxCubeTextureLevels = 12;
 155    ctx->Const.MaxTextureRectSize = (1 << 11);
 156    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 157
 158    /* GL_ARB_fragment_program limits - don't think Mesa actually
 159     * validates programs against these, and in any case one ARB
 160     * instruction can translate to more than one HW instruction, so
 161     * we'll still have to check and fallback each time.
 162     */
 163    ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
 164    ctx->Const.FragmentProgram.MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
 165    ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
 166    ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
 167    ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
 168    ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
 169                                                        I915_MAX_TEX_INSN);
 170    ctx->Const.FragmentProgram.MaxNativeTexIndirections =
 171       I915_MAX_TEX_INDIRECT;
 172    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
 173
 174    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 175    ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE;
 176
 177    driInitExtensions(ctx, i915_extensions, GL_FALSE);
 178
 179
 180    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 181                       36 * sizeof(GLfloat));
 182
 183    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 184
 185    i915InitState(i915);
 186
 187    return GL_TRUE;
 188 }