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/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 "../glsl/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, GLuint new_state)
  56 {
  57    _swrast_InvalidateState(ctx, new_state);
  58    _swsetup_InvalidateState(ctx, new_state);
  59    _vbo_InvalidateState(ctx, new_state);
  60    _tnl_InvalidateState(ctx, new_state);
  61    _tnl_invalidate_vertex_state(ctx, new_state);
  62    intel_context(ctx)->NewGLState |= new_state;
  63
  64    /* Todo: gather state values under which tracked parameters become
  65     * invalidated, add callbacks for things like
  66     * ProgramLocalParameters, etc.
  67     */
  68    {
  69       struct i915_fragment_program *p =
  70          (struct i915_fragment_program *) ctx->FragmentProgram._Current;
  71       if (p && p->nr_params)
  72          p->params_uptodate = 0;
  73    }
  74
  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    if (new_state & (_NEW_PROGRAM | _NEW_POINT))
  82        i915_update_sprite_point_enable(ctx);
  83 }
  84
  85
  86 static void
  87 i915InitDriverFunctions(struct dd_function_table *functions)
  88 {
  89    intelInitDriverFunctions(functions);
  90    i915InitStateFunctions(functions);
  91    i915InitFragProgFuncs(functions);
  92    functions->UpdateState = i915InvalidateState;
  93 }
  94
  95 /* Note: this is shared with i830. */
  96 void
  97 intel_init_texture_formats(struct gl_context *ctx)
  98 {
  99    struct intel_context *intel = intel_context(ctx);
 100    struct intel_screen *intel_screen = intel->intelScreen;
 101
 102    ctx->TextureFormatSupported[MESA_FORMAT_ARGB8888] = true;
 103    if (intel_screen->deviceID != PCI_CHIP_I830_M &&
 104        intel_screen->deviceID != PCI_CHIP_845_G)
 105       ctx->TextureFormatSupported[MESA_FORMAT_XRGB8888] = true;
 106    if (intel->gen == 3)
 107       ctx->TextureFormatSupported[MESA_FORMAT_SARGB8] = true;
 108    ctx->TextureFormatSupported[MESA_FORMAT_ARGB4444] = true;
 109    ctx->TextureFormatSupported[MESA_FORMAT_ARGB1555] = true;
 110    ctx->TextureFormatSupported[MESA_FORMAT_RGB565] = true;
 111    ctx->TextureFormatSupported[MESA_FORMAT_L8] = true;
 112    ctx->TextureFormatSupported[MESA_FORMAT_A8] = true;
 113    ctx->TextureFormatSupported[MESA_FORMAT_I8] = true;
 114    ctx->TextureFormatSupported[MESA_FORMAT_AL88] = true;
 115
 116    /* Depth and stencil */
 117    ctx->TextureFormatSupported[MESA_FORMAT_S8_Z24] = true;
 118    ctx->TextureFormatSupported[MESA_FORMAT_X8_Z24] = true;
 119
 120    /*
 121     * This was disabled in initial FBO enabling to avoid combinations
 122     * of depth+stencil that wouldn't work together.  We since decided
 123     * that it was OK, since it's up to the app to come up with the
 124     * combo that actually works, so this can probably be re-enabled.
 125     */
 126    /*
 127    ctx->TextureFormatSupported[MESA_FORMAT_Z16] = true;
 128    ctx->TextureFormatSupported[MESA_FORMAT_Z24] = true;
 129    */
 130
 131    /* ctx->Extensions.MESA_ycbcr_texture */
 132    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = true;
 133    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = true;
 134
 135    /* GL_3DFX_texture_compression_FXT1 */
 136    ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = true;
 137    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = true;
 138
 139    /* GL_EXT_texture_compression_s3tc */
 140    ctx->TextureFormatSupported[MESA_FORMAT_RGB_DXT1] = true;
 141    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT1] = true;
 142    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT3] = true;
 143    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT5] = true;
 144 }
 145
 146 extern const struct tnl_pipeline_stage *intel_pipeline[];
 147
 148 bool
 149 i915CreateContext(int api,
 150                   const struct gl_config * mesaVis,
 151                   __DRIcontext * driContextPriv,
 152                   unsigned major_version,
 153                   unsigned minor_version,
 154                   unsigned *error,
 155                   void *sharedContextPrivate)
 156 {
 157    struct dd_function_table functions;
 158    struct i915_context *i915 = rzalloc(NULL, struct i915_context);
 159    struct intel_context *intel = &i915->intel;
 160    struct gl_context *ctx = &intel->ctx;
 161
 162    if (!i915) {
 163       *error = __DRI_CTX_ERROR_NO_MEMORY;
 164       return false;
 165    }
 166
 167    i915InitVtbl(i915);
 168
 169    i915InitDriverFunctions(&functions);
 170
 171    if (!intelInitContext(intel, api, major_version, minor_version,
 172                          mesaVis, driContextPriv,
 173                          sharedContextPrivate, &functions,
 174                          error)) {
 175       ralloc_free(i915);
 176       return false;
 177    }
 178
 179    intel_init_texture_formats(ctx);
 180
 181    _math_matrix_ctr(&intel->ViewportMatrix);
 182
 183    /* Initialize swrast, tnl driver tables: */
 184    intelInitTriFuncs(ctx);
 185
 186    /* Install the customized pipeline: */
 187    _tnl_destroy_pipeline(ctx);
 188    _tnl_install_pipeline(ctx, intel_pipeline);
 189
 190    if (intel->no_rast)
 191       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 192
 193    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 194    ctx->Const.FragmentProgram.MaxTextureImageUnits = I915_TEX_UNITS;
 195    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 196    ctx->Const.MaxVarying = I915_TEX_UNITS;
 197    ctx->Const.VertexProgram.MaxOutputComponents =
 198       ctx->Const.FragmentProgram.MaxInputComponents = ctx->Const.MaxVarying * 4;
 199    ctx->Const.MaxCombinedTextureImageUnits =
 200       ctx->Const.VertexProgram.MaxTextureImageUnits +
 201       ctx->Const.FragmentProgram.MaxTextureImageUnits;
 202
 203    /* Advertise the full hardware capabilities.  The new memory
 204     * manager should cope much better with overload situations:
 205     */
 206    ctx->Const.MaxTextureLevels = 12;
 207    ctx->Const.Max3DTextureLevels = 9;
 208    ctx->Const.MaxCubeTextureLevels = 12;
 209    ctx->Const.MaxTextureRectSize = (1 << 11);
 210    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 211
 212    ctx->Const.MaxTextureMaxAnisotropy = 4.0;
 213
 214    /* GL_ARB_fragment_program limits - don't think Mesa actually
 215     * validates programs against these, and in any case one ARB
 216     * instruction can translate to more than one HW instruction, so
 217     * we'll still have to check and fallback each time.
 218     */
 219    ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
 220    ctx->Const.FragmentProgram.MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
 221    ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
 222    ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
 223    ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
 224    ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
 225                                                        I915_MAX_TEX_INSN);
 226    ctx->Const.FragmentProgram.MaxNativeTexIndirections =
 227       I915_MAX_TEX_INDIRECT;
 228    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
 229    ctx->Const.FragmentProgram.MaxEnvParams =
 230       MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
 231            ctx->Const.FragmentProgram.MaxEnvParams);
 232
 233    /* i915 stores all values in single-precision floats.  Values aren't set
 234     * for other program targets because software is used for those targets.
 235     */
 236    ctx->Const.FragmentProgram.MediumFloat.RangeMin = 127;
 237    ctx->Const.FragmentProgram.MediumFloat.RangeMax = 127;
 238    ctx->Const.FragmentProgram.MediumFloat.Precision = 23;
 239    ctx->Const.FragmentProgram.LowFloat = ctx->Const.FragmentProgram.HighFloat =
 240       ctx->Const.FragmentProgram.MediumFloat;
 241    ctx->Const.FragmentProgram.MediumInt.RangeMin = 24;
 242    ctx->Const.FragmentProgram.MediumInt.RangeMax = 24;
 243    ctx->Const.FragmentProgram.MediumInt.Precision = 0;
 244    ctx->Const.FragmentProgram.LowInt = ctx->Const.FragmentProgram.HighInt =
 245       ctx->Const.FragmentProgram.MediumInt;
 246
 247    ctx->FragmentProgram._MaintainTexEnvProgram = true;
 248
 249    /* FINISHME: Are there other options that should be enabled for software
 250     * FINISHME: vertex shaders?
 251     */
 252    ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitCondCodes = true;
 253
 254    struct gl_shader_compiler_options *const fs_options =
 255       & ctx->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
 256    fs_options->MaxIfDepth = 0;
 257    fs_options->EmitNoNoise = true;
 258    fs_options->EmitNoPow = true;
 259    fs_options->EmitNoMainReturn = true;
 260    fs_options->EmitNoIndirectInput = true;
 261    fs_options->EmitNoIndirectOutput = true;
 262    fs_options->EmitNoIndirectUniform = true;
 263    fs_options->EmitNoIndirectTemp = true;
 264
 265    ctx->Const.MaxDrawBuffers = 1;
 266    ctx->Const.QueryCounterBits.SamplesPassed = 0;
 267
 268    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 269                       36 * sizeof(GLfloat));
 270
 271    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 272
 273    i915InitState(i915);
 274
 275    /* Always enable pixel fog.  Vertex fog using fog coord will conflict
 276     * with fog code appended onto fragment program.
 277     */
 278    _tnl_allow_vertex_fog(ctx, 0);
 279    _tnl_allow_pixel_fog(ctx, 1);
 280
 281    _mesa_compute_version(ctx);
 282
 283    _mesa_initialize_dispatch_tables(ctx);
 284    _mesa_initialize_vbo_vtxfmt(ctx);
 285
 286    return true;
 287 }