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 "main/imports.h"
  30 #include "main/macros.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 "i915_reg.h"
  41 #include "i915_program.h"
  42
  43 #include "intel_tris.h"
  44 #include "intel_span.h"
  45
  46 /***************************************
  47  * Mesa's Driver Functions
  48  ***************************************/
  49
  50 /* Override intel default.
  51  */
  52 static void
  53 i915InvalidateState(GLcontext * ctx, GLuint new_state)
  54 {
  55    _swrast_InvalidateState(ctx, new_state);
  56    _swsetup_InvalidateState(ctx, new_state);
  57    _vbo_InvalidateState(ctx, new_state);
  58    _tnl_InvalidateState(ctx, new_state);
  59    _tnl_invalidate_vertex_state(ctx, new_state);
  60    intel_context(ctx)->NewGLState |= new_state;
  61
  62    /* Todo: gather state values under which tracked parameters become
  63     * invalidated, add callbacks for things like
  64     * ProgramLocalParameters, etc.
  65     */
  66    {
  67       struct i915_fragment_program *p =
  68          (struct i915_fragment_program *) ctx->FragmentProgram._Current;
  69       if (p && p->nr_params)
  70          p->params_uptodate = 0;
  71    }
  72
  73    if (new_state & (_NEW_FOG | _NEW_HINT | _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS))
  74       i915_update_fog(ctx);
  75    if (new_state & (_NEW_STENCIL | _NEW_BUFFERS | _NEW_POLYGON))
  76       i915_update_stencil(ctx);
  77    if (new_state & (_NEW_LIGHT))
  78        i915_update_provoking_vertex(ctx);
  79    if (new_state & (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS))
  80        i915_update_program(ctx);
  81 }
  82
  83
  84 static void
  85 i915InitDriverFunctions(struct dd_function_table *functions)
  86 {
  87    intelInitDriverFunctions(functions);
  88    i915InitStateFunctions(functions);
  89    i915InitFragProgFuncs(functions);
  90    functions->UpdateState = i915InvalidateState;
  91 }
  92
  93
  94 extern const struct tnl_pipeline_stage *intel_pipeline[];
  95
  96 GLboolean
  97 i915CreateContext(int api,
  98                   const __GLcontextModes * mesaVis,
  99                   __DRIcontext * driContextPriv,
 100                   void *sharedContextPrivate)
 101 {
 102    struct dd_function_table functions;
 103    struct i915_context *i915 =
 104       (struct i915_context *) CALLOC_STRUCT(i915_context);
 105    struct intel_context *intel = &i915->intel;
 106    GLcontext *ctx = &intel->ctx;
 107
 108    if (!i915)
 109       return GL_FALSE;
 110
 111    if (0)
 112       printf("\ntexmem-0-3 branch\n\n");
 113
 114    i915InitVtbl(i915);
 115
 116    i915InitDriverFunctions(&functions);
 117
 118    if (!intelInitContext(intel, api, mesaVis, driContextPriv,
 119                          sharedContextPrivate, &functions)) {
 120       FREE(i915);
 121       return GL_FALSE;
 122    }
 123
 124    _math_matrix_ctr(&intel->ViewportMatrix);
 125
 126    /* Initialize swrast, tnl driver tables: */
 127    intelInitSpanFuncs(ctx);
 128    intelInitTriFuncs(ctx);
 129
 130    /* Install the customized pipeline: */
 131    _tnl_destroy_pipeline(ctx);
 132    _tnl_install_pipeline(ctx, intel_pipeline);
 133
 134    if (intel->no_rast)
 135       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 136
 137    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 138    ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
 139    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 140    ctx->Const.MaxVarying = I915_TEX_UNITS;
 141    ctx->Const.MaxCombinedTextureImageUnits =
 142       ctx->Const.MaxVertexTextureImageUnits +
 143       ctx->Const.MaxTextureImageUnits;
 144
 145    /* Advertise the full hardware capabilities.  The new memory
 146     * manager should cope much better with overload situations:
 147     */
 148    ctx->Const.MaxTextureLevels = 12;
 149    ctx->Const.Max3DTextureLevels = 9;
 150    ctx->Const.MaxCubeTextureLevels = 12;
 151    ctx->Const.MaxTextureRectSize = (1 << 11);
 152    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 153
 154    ctx->Const.MaxTextureMaxAnisotropy = 4.0;
 155
 156    /* GL_ARB_fragment_program limits - don't think Mesa actually
 157     * validates programs against these, and in any case one ARB
 158     * instruction can translate to more than one HW instruction, so
 159     * we'll still have to check and fallback each time.
 160     */
 161    ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
 162    ctx->Const.FragmentProgram.MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
 163    ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
 164    ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
 165    ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
 166    ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
 167                                                        I915_MAX_TEX_INSN);
 168    ctx->Const.FragmentProgram.MaxNativeTexIndirections =
 169       I915_MAX_TEX_INDIRECT;
 170    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
 171    ctx->Const.FragmentProgram.MaxEnvParams =
 172       MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
 173            ctx->Const.FragmentProgram.MaxEnvParams);
 174
 175    ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
 176
 177    ctx->Shader.EmitNoIfs = GL_TRUE;
 178
 179    ctx->Const.MaxDrawBuffers = 1;
 180
 181    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 182                       36 * sizeof(GLfloat));
 183
 184    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 185
 186    i915InitState(i915);
 187
 188    return GL_TRUE;
 189 }