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 #include "../glsl/ralloc.h"
  40
  41 #include "i915_reg.h"
  42 #include "i915_program.h"
  43
  44 #include "intel_span.h"
  45
  46 /***************************************
  47  * Mesa's Driver Functions
  48  ***************************************/
  49
  50 /* Override intel default.
  51  */
  52 static void
  53 i915InvalidateState(struct gl_context * 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_STENCIL | _NEW_BUFFERS | _NEW_POLYGON))
  74       i915_update_stencil(ctx);
  75    if (new_state & (_NEW_LIGHT))
  76        i915_update_provoking_vertex(ctx);
  77    if (new_state & (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS))
  78        i915_update_program(ctx);
  79    if (new_state & (_NEW_PROGRAM | _NEW_POINT))
  80        i915_update_sprite_point_enable(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 /* Note: this is shared with i830. */
  94 void
  95 intel_init_texture_formats(struct gl_context *ctx)
  96 {
  97    struct intel_context *intel = intel_context(ctx);
  98    struct intel_screen *intel_screen = intel->intelScreen;
  99
 100    ctx->TextureFormatSupported[MESA_FORMAT_ARGB8888] = true;
 101    if (intel_screen->deviceID != PCI_CHIP_I830_M &&
 102        intel_screen->deviceID != PCI_CHIP_845_G)
 103       ctx->TextureFormatSupported[MESA_FORMAT_XRGB8888] = true;
 104    ctx->TextureFormatSupported[MESA_FORMAT_ARGB4444] = true;
 105    ctx->TextureFormatSupported[MESA_FORMAT_ARGB1555] = true;
 106    ctx->TextureFormatSupported[MESA_FORMAT_RGB565] = true;
 107    ctx->TextureFormatSupported[MESA_FORMAT_L8] = true;
 108    ctx->TextureFormatSupported[MESA_FORMAT_A8] = true;
 109    ctx->TextureFormatSupported[MESA_FORMAT_I8] = true;
 110    ctx->TextureFormatSupported[MESA_FORMAT_AL88] = true;
 111
 112    /* Depth and stencil */
 113    ctx->TextureFormatSupported[MESA_FORMAT_S8_Z24] = true;
 114    ctx->TextureFormatSupported[MESA_FORMAT_X8_Z24] = true;
 115    ctx->TextureFormatSupported[MESA_FORMAT_S8] = intel->has_separate_stencil;
 116
 117    /*
 118     * This was disabled in initial FBO enabling to avoid combinations
 119     * of depth+stencil that wouldn't work together.  We since decided
 120     * that it was OK, since it's up to the app to come up with the
 121     * combo that actually works, so this can probably be re-enabled.
 122     */
 123    /*
 124    ctx->TextureFormatSupported[MESA_FORMAT_Z16] = true;
 125    ctx->TextureFormatSupported[MESA_FORMAT_Z24] = true;
 126    */
 127
 128    /* ctx->Extensions.MESA_ycbcr_texture */
 129    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = true;
 130    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = true;
 131
 132    /* GL_3DFX_texture_compression_FXT1 */
 133    ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = true;
 134    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = true;
 135
 136    /* GL_EXT_texture_compression_s3tc */
 137    ctx->TextureFormatSupported[MESA_FORMAT_RGB_DXT1] = true;
 138    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT1] = true;
 139    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT3] = true;
 140    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT5] = true;
 141 }
 142
 143 extern const struct tnl_pipeline_stage *intel_pipeline[];
 144
 145 bool
 146 i915CreateContext(int api,
 147                   const struct gl_config * mesaVis,
 148                   __DRIcontext * driContextPriv,
 149                   void *sharedContextPrivate)
 150 {
 151    struct dd_function_table functions;
 152    struct i915_context *i915 = rzalloc(NULL, struct i915_context);
 153    struct intel_context *intel = &i915->intel;
 154    struct gl_context *ctx = &intel->ctx;
 155
 156    if (!i915)
 157       return false;
 158
 159    i915InitVtbl(i915);
 160
 161    i915InitDriverFunctions(&functions);
 162
 163    if (!intelInitContext(intel, api, mesaVis, driContextPriv,
 164                          sharedContextPrivate, &functions)) {
 165       FREE(i915);
 166       return false;
 167    }
 168
 169    intel_init_texture_formats(ctx);
 170
 171    _math_matrix_ctr(&intel->ViewportMatrix);
 172
 173    /* Initialize swrast, tnl driver tables: */
 174    intelInitSpanFuncs(ctx);
 175    intelInitTriFuncs(ctx);
 176
 177    /* Install the customized pipeline: */
 178    _tnl_destroy_pipeline(ctx);
 179    _tnl_install_pipeline(ctx, intel_pipeline);
 180
 181    if (intel->no_rast)
 182       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 183
 184    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 185    ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
 186    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 187    ctx->Const.MaxVarying = I915_TEX_UNITS;
 188    ctx->Const.MaxCombinedTextureImageUnits =
 189       ctx->Const.MaxVertexTextureImageUnits +
 190       ctx->Const.MaxTextureImageUnits;
 191
 192    /* Advertise the full hardware capabilities.  The new memory
 193     * manager should cope much better with overload situations:
 194     */
 195    ctx->Const.MaxTextureLevels = 12;
 196    ctx->Const.Max3DTextureLevels = 9;
 197    ctx->Const.MaxCubeTextureLevels = 12;
 198    ctx->Const.MaxTextureRectSize = (1 << 11);
 199    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 200
 201    ctx->Const.MaxTextureMaxAnisotropy = 4.0;
 202
 203    /* GL_ARB_fragment_program limits - don't think Mesa actually
 204     * validates programs against these, and in any case one ARB
 205     * instruction can translate to more than one HW instruction, so
 206     * we'll still have to check and fallback each time.
 207     */
 208    ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
 209    ctx->Const.FragmentProgram.MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
 210    ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
 211    ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
 212    ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
 213    ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
 214                                                        I915_MAX_TEX_INSN);
 215    ctx->Const.FragmentProgram.MaxNativeTexIndirections =
 216       I915_MAX_TEX_INDIRECT;
 217    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
 218    ctx->Const.FragmentProgram.MaxEnvParams =
 219       MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
 220            ctx->Const.FragmentProgram.MaxEnvParams);
 221
 222    /* i915 stores all values in single-precision floats.  Values aren't set
 223     * for other program targets because software is used for those targets.
 224     */
 225    ctx->Const.FragmentProgram.MediumFloat.RangeMin = 127;
 226    ctx->Const.FragmentProgram.MediumFloat.RangeMax = 127;
 227    ctx->Const.FragmentProgram.MediumFloat.Precision = 23;
 228    ctx->Const.FragmentProgram.LowFloat = ctx->Const.FragmentProgram.HighFloat =
 229       ctx->Const.FragmentProgram.MediumFloat;
 230    ctx->Const.FragmentProgram.MediumInt.RangeMin = 24;
 231    ctx->Const.FragmentProgram.MediumInt.RangeMax = 24;
 232    ctx->Const.FragmentProgram.MediumInt.Precision = 0;
 233    ctx->Const.FragmentProgram.LowInt = ctx->Const.FragmentProgram.HighInt =
 234       ctx->Const.FragmentProgram.MediumInt;
 235
 236    ctx->FragmentProgram._MaintainTexEnvProgram = true;
 237
 238    /* FINISHME: Are there other options that should be enabled for software
 239     * FINISHME: vertex shaders?
 240     */
 241    ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitCondCodes = true;
 242
 243    struct gl_shader_compiler_options *const fs_options =
 244       & ctx->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
 245    fs_options->MaxIfDepth = 0;
 246    fs_options->EmitNoNoise = true;
 247    fs_options->EmitNoPow = true;
 248    fs_options->EmitNoMainReturn = true;
 249    fs_options->EmitNoIndirectInput = true;
 250    fs_options->EmitNoIndirectOutput = true;
 251    fs_options->EmitNoIndirectUniform = true;
 252    fs_options->EmitNoIndirectTemp = true;
 253
 254    ctx->Const.MaxDrawBuffers = 1;
 255
 256    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 257                       36 * sizeof(GLfloat));
 258
 259    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 260
 261    i915InitState(i915);
 262
 263    /* Always enable pixel fog.  Vertex fog using fog coord will conflict
 264     * with fog code appended onto fragment program.
 265     */
 266    _tnl_allow_vertex_fog(ctx, 0);
 267    _tnl_allow_pixel_fog(ctx, 1);
 268
 269    return true;
 270 }