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

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   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 VMWARE 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/api_exec.h"
  30 #include "main/imports.h"
  31 #include "main/macros.h"
  32 #include "main/version.h"
  33 #include "main/vtxfmt.h"
  34 #include "intel_chipset.h"
  35 #include "intel_tris.h"
  36 #include "tnl/t_context.h"
  37 #include "tnl/t_pipeline.h"
  38 #include "tnl/t_vertex.h"
  39
  40 #include "swrast/swrast.h"
  41 #include "swrast_setup/swrast_setup.h"
  42 #include "tnl/tnl.h"
  43 #include "util/ralloc.h"
  44
  45 #include "i915_reg.h"
  46 #include "i915_program.h"
  47
  48 /***************************************
  49  * Mesa's Driver Functions
  50  ***************************************/
  51
  52 /* Override intel default.
  53  */
  54 static void
  55 i915InvalidateState(struct gl_context * ctx)
  56 {
  57    GLuint new_state = ctx->NewState;
  58
  59    _swrast_InvalidateState(ctx, new_state);
  60    _swsetup_InvalidateState(ctx, new_state);
  61    _tnl_InvalidateState(ctx, new_state);
  62    _tnl_invalidate_vertex_state(ctx, new_state);
  63    intel_context(ctx)->NewGLState |= new_state;
  64
  65    /* Todo: gather state values under which tracked parameters become
  66     * invalidated, add callbacks for things like
  67     * ProgramLocalParameters, etc.
  68     */
  69    {
  70       struct i915_fragment_program *p =
  71          (struct i915_fragment_program *) ctx->FragmentProgram._Current;
  72       if (p && p->nr_params)
  73          p->params_uptodate = 0;
  74    }
  75
  76    if (new_state & (_NEW_STENCIL | _NEW_BUFFERS | _NEW_POLYGON))
  77       i915_update_stencil(ctx);
  78    if (new_state & (_NEW_LIGHT))
  79        i915_update_provoking_vertex(ctx);
  80    if (new_state & (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS))
  81        i915_update_program(ctx);
  82    if (new_state & (_NEW_PROGRAM | _NEW_POINT))
  83        i915_update_sprite_point_enable(ctx);
  84 }
  85
  86
  87 static void
  88 i915InitDriverFunctions(struct dd_function_table *functions)
  89 {
  90    intelInitDriverFunctions(functions);
  91    i915InitStateFunctions(functions);
  92    i915InitFragProgFuncs(functions);
  93    functions->UpdateState = i915InvalidateState;
  94 }
  95
  96 /* Note: this is shared with i830. */
  97 void
  98 intel_init_texture_formats(struct gl_context *ctx)
  99 {
 100    struct intel_context *intel = intel_context(ctx);
 101    struct intel_screen *intel_screen = intel->intelScreen;
 102
 103    ctx->TextureFormatSupported[MESA_FORMAT_B8G8R8A8_UNORM] = true;
 104    if (intel_screen->deviceID != PCI_CHIP_I830_M &&
 105        intel_screen->deviceID != PCI_CHIP_845_G)
 106       ctx->TextureFormatSupported[MESA_FORMAT_B8G8R8X8_UNORM] = true;
 107    if (intel->gen == 3)
 108       ctx->TextureFormatSupported[MESA_FORMAT_B8G8R8A8_SRGB] = true;
 109    ctx->TextureFormatSupported[MESA_FORMAT_B4G4R4A4_UNORM] = true;
 110    ctx->TextureFormatSupported[MESA_FORMAT_B5G5R5A1_UNORM] = true;
 111    ctx->TextureFormatSupported[MESA_FORMAT_B5G6R5_UNORM] = true;
 112    ctx->TextureFormatSupported[MESA_FORMAT_L_UNORM8] = true;
 113    if (intel->gen == 3)
 114       ctx->TextureFormatSupported[MESA_FORMAT_A_UNORM8] = true;
 115    ctx->TextureFormatSupported[MESA_FORMAT_I_UNORM8] = true;
 116    ctx->TextureFormatSupported[MESA_FORMAT_L8A8_UNORM] = true;
 117
 118    /* Depth and stencil */
 119    if (intel->gen == 3) {
 120       ctx->TextureFormatSupported[MESA_FORMAT_Z24_UNORM_S8_UINT] = true;
 121       ctx->TextureFormatSupported[MESA_FORMAT_Z24_UNORM_X8_UINT] = true;
 122
 123       /*
 124        * This was disabled in initial FBO enabling to avoid combinations
 125        * of depth+stencil that wouldn't work together.  We since decided
 126        * that it was OK, since it's up to the app to come up with the
 127        * combo that actually works, so this can probably be re-enabled.
 128        */
 129       /*
 130       ctx->TextureFormatSupported[MESA_FORMAT_Z_UNORM16] = true;
 131       ctx->TextureFormatSupported[MESA_FORMAT_Z24] = true;
 132       */
 133    }
 134
 135    /* ctx->Extensions.MESA_ycbcr_texture */
 136    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = true;
 137    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = true;
 138
 139    /* GL_3DFX_texture_compression_FXT1 */
 140    ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = true;
 141    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = true;
 142
 143    /* GL_EXT_texture_compression_s3tc */
 144    ctx->TextureFormatSupported[MESA_FORMAT_RGB_DXT1] = true;
 145    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT1] = true;
 146    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT3] = true;
 147    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT5] = true;
 148 }
 149
 150 extern const struct tnl_pipeline_stage *intel_pipeline[];
 151
 152 bool
 153 i915CreateContext(int api,
 154                   const struct gl_config * mesaVis,
 155                   __DRIcontext * driContextPriv,
 156                   unsigned major_version,
 157                   unsigned minor_version,
 158                   uint32_t flags,
 159                   unsigned *error,
 160                   void *sharedContextPrivate)
 161 {
 162    struct dd_function_table functions;
 163    struct i915_context *i915 = rzalloc(NULL, struct i915_context);
 164    struct intel_context *intel = &i915->intel;
 165    struct gl_context *ctx = &intel->ctx;
 166
 167    if (!i915) {
 168       *error = __DRI_CTX_ERROR_NO_MEMORY;
 169       return false;
 170    }
 171
 172    i915InitVtbl(i915);
 173
 174    i915InitDriverFunctions(&functions);
 175
 176    if (!intelInitContext(intel, api, major_version, minor_version, flags,
 177                          mesaVis, driContextPriv,
 178                          sharedContextPrivate, &functions,
 179                          error)) {
 180       ralloc_free(i915);
 181       return false;
 182    }
 183
 184    intel_init_texture_formats(ctx);
 185
 186    _math_matrix_ctr(&intel->ViewportMatrix);
 187
 188    /* Initialize swrast, tnl driver tables: */
 189    intelInitTriFuncs(ctx);
 190
 191    /* Install the customized pipeline: */
 192    _tnl_destroy_pipeline(ctx);
 193    _tnl_install_pipeline(ctx, intel_pipeline);
 194
 195    if (intel->no_rast)
 196       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 197
 198    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 199    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = I915_TEX_UNITS;
 200    ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = I915_TEX_UNITS;
 201    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 202    ctx->Const.MaxVarying = I915_TEX_UNITS;
 203    ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents =
 204       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents = ctx->Const.MaxVarying * 4;
 205    ctx->Const.MaxCombinedTextureImageUnits =
 206       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
 207       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits;
 208
 209    /* Advertise the full hardware capabilities.  The new memory
 210     * manager should cope much better with overload situations:
 211     */
 212    ctx->Const.MaxTextureLevels = 12;
 213    ctx->Const.Max3DTextureLevels = 9;
 214    ctx->Const.MaxCubeTextureLevels = 12;
 215    ctx->Const.MaxTextureRectSize = (1 << 11);
 216    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 217
 218    ctx->Const.MaxTextureMaxAnisotropy = 4.0;
 219
 220    /* GL_ARB_fragment_program limits - don't think Mesa actually
 221     * validates programs against these, and in any case one ARB
 222     * instruction can translate to more than one HW instruction, so
 223     * we'll still have to check and fallback each time.
 224     */
 225    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTemps = I915_MAX_TEMPORARY;
 226    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
 227    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeParameters = I915_MAX_CONSTANT;
 228    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAluInstructions = I915_MAX_ALU_INSN;
 229    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTexInstructions = I915_MAX_TEX_INSN;
 230    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeInstructions = (I915_MAX_ALU_INSN +
 231                                                        I915_MAX_TEX_INSN);
 232    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTexIndirections =
 233       I915_MAX_TEX_INDIRECT;
 234    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAddressRegs = 0; /* I don't think we have one */
 235    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams =
 236       MIN2(ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeParameters,
 237            ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams);
 238
 239    /* i915 stores all values in single-precision floats.  Values aren't set
 240     * for other program targets because software is used for those targets.
 241     */
 242    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat.RangeMin = 127;
 243    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat.RangeMax = 127;
 244    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat.Precision = 23;
 245    ctx->Const.Program[MESA_SHADER_FRAGMENT].LowFloat = ctx->Const.Program[MESA_SHADER_FRAGMENT].HighFloat =
 246       ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat;
 247    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt.RangeMin = 24;
 248    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt.RangeMax = 24;
 249    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt.Precision = 0;
 250    ctx->Const.Program[MESA_SHADER_FRAGMENT].LowInt = ctx->Const.Program[MESA_SHADER_FRAGMENT].HighInt =
 251       ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt;
 252
 253    ctx->FragmentProgram._MaintainTexEnvProgram = true;
 254
 255    /* FINISHME: Are there other options that should be enabled for software
 256     * FINISHME: vertex shaders?
 257     */
 258    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoIndirectSampler =
 259       true;
 260
 261    struct gl_shader_compiler_options *const fs_options =
 262       & ctx->Const.ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
 263    fs_options->MaxIfDepth = 0;
 264    fs_options->EmitNoPow = true;
 265    fs_options->EmitNoMainReturn = true;
 266    fs_options->EmitNoIndirectInput = true;
 267    fs_options->EmitNoIndirectOutput = true;
 268    fs_options->EmitNoIndirectUniform = true;
 269    fs_options->EmitNoIndirectTemp = true;
 270    fs_options->EmitNoIndirectSampler = true;
 271
 272    ctx->Const.MaxDrawBuffers = 1;
 273    ctx->Const.QueryCounterBits.SamplesPassed = 0;
 274
 275    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 276                       36 * sizeof(GLfloat));
 277
 278    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 279
 280    i915InitState(i915);
 281
 282    /* Always enable pixel fog.  Vertex fog using fog coord will conflict
 283     * with fog code appended onto fragment program.
 284     */
 285    _tnl_allow_vertex_fog(ctx, 0);
 286    _tnl_allow_pixel_fog(ctx, 1);
 287
 288    _mesa_compute_version(ctx);
 289
 290    _mesa_initialize_dispatch_tables(ctx);
 291    _mesa_initialize_vbo_vtxfmt(ctx);
 292
 293    return true;
 294 }