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_tris.h"
  35 #include "tnl/t_context.h"
  36 #include "tnl/t_pipeline.h"
  37 #include "tnl/t_vertex.h"
  38
  39 #include "swrast/swrast.h"
  40 #include "swrast_setup/swrast_setup.h"
  41 #include "tnl/tnl.h"
  42 #include "../glsl/ralloc.h"
  43
  44 #include "i915_reg.h"
  45 #include "i915_program.h"
  46
  47 #include "intel_span.h"
  48
  49 /***************************************
  50  * Mesa's Driver Functions
  51  ***************************************/
  52
  53 /* Override intel default.
  54  */
  55 static void
  56 i915InvalidateState(struct gl_context * ctx, GLuint new_state)
  57 {
  58    _swrast_InvalidateState(ctx, new_state);
  59    _swsetup_InvalidateState(ctx, new_state);
  60    _vbo_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_ARGB8888] = true;
 104    if (intel_screen->deviceID != PCI_CHIP_I830_M &&
 105        intel_screen->deviceID != PCI_CHIP_845_G)
 106       ctx->TextureFormatSupported[MESA_FORMAT_XRGB8888] = true;
 107    ctx->TextureFormatSupported[MESA_FORMAT_ARGB4444] = true;
 108    ctx->TextureFormatSupported[MESA_FORMAT_ARGB1555] = true;
 109    ctx->TextureFormatSupported[MESA_FORMAT_RGB565] = true;
 110    ctx->TextureFormatSupported[MESA_FORMAT_L8] = true;
 111    ctx->TextureFormatSupported[MESA_FORMAT_A8] = true;
 112    ctx->TextureFormatSupported[MESA_FORMAT_I8] = true;
 113    ctx->TextureFormatSupported[MESA_FORMAT_AL88] = true;
 114
 115    /* Depth and stencil */
 116    ctx->TextureFormatSupported[MESA_FORMAT_S8_Z24] = true;
 117    ctx->TextureFormatSupported[MESA_FORMAT_X8_Z24] = true;
 118    ctx->TextureFormatSupported[MESA_FORMAT_S8] = intel->has_separate_stencil;
 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    intelInitSpanFuncs(ctx);
 185    intelInitTriFuncs(ctx);
 186
 187    /* Install the customized pipeline: */
 188    _tnl_destroy_pipeline(ctx);
 189    _tnl_install_pipeline(ctx, intel_pipeline);
 190
 191    if (intel->no_rast)
 192       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 193
 194    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 195    ctx->Const.MaxTextureImageUnits = I915_TEX_UNITS;
 196    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 197    ctx->Const.MaxVarying = I915_TEX_UNITS;
 198    ctx->Const.MaxCombinedTextureImageUnits =
 199       ctx->Const.MaxVertexTextureImageUnits +
 200       ctx->Const.MaxTextureImageUnits;
 201
 202    /* Advertise the full hardware capabilities.  The new memory
 203     * manager should cope much better with overload situations:
 204     */
 205    ctx->Const.MaxTextureLevels = 12;
 206    ctx->Const.Max3DTextureLevels = 9;
 207    ctx->Const.MaxCubeTextureLevels = 12;
 208    ctx->Const.MaxTextureRectSize = (1 << 11);
 209    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 210
 211    ctx->Const.MaxTextureMaxAnisotropy = 4.0;
 212
 213    /* GL_ARB_fragment_program limits - don't think Mesa actually
 214     * validates programs against these, and in any case one ARB
 215     * instruction can translate to more than one HW instruction, so
 216     * we'll still have to check and fallback each time.
 217     */
 218    ctx->Const.FragmentProgram.MaxNativeTemps = I915_MAX_TEMPORARY;
 219    ctx->Const.FragmentProgram.MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
 220    ctx->Const.FragmentProgram.MaxNativeParameters = I915_MAX_CONSTANT;
 221    ctx->Const.FragmentProgram.MaxNativeAluInstructions = I915_MAX_ALU_INSN;
 222    ctx->Const.FragmentProgram.MaxNativeTexInstructions = I915_MAX_TEX_INSN;
 223    ctx->Const.FragmentProgram.MaxNativeInstructions = (I915_MAX_ALU_INSN +
 224                                                        I915_MAX_TEX_INSN);
 225    ctx->Const.FragmentProgram.MaxNativeTexIndirections =
 226       I915_MAX_TEX_INDIRECT;
 227    ctx->Const.FragmentProgram.MaxNativeAddressRegs = 0; /* I don't think we have one */
 228    ctx->Const.FragmentProgram.MaxEnvParams =
 229       MIN2(ctx->Const.FragmentProgram.MaxNativeParameters,
 230            ctx->Const.FragmentProgram.MaxEnvParams);
 231
 232    /* i915 stores all values in single-precision floats.  Values aren't set
 233     * for other program targets because software is used for those targets.
 234     */
 235    ctx->Const.FragmentProgram.MediumFloat.RangeMin = 127;
 236    ctx->Const.FragmentProgram.MediumFloat.RangeMax = 127;
 237    ctx->Const.FragmentProgram.MediumFloat.Precision = 23;
 238    ctx->Const.FragmentProgram.LowFloat = ctx->Const.FragmentProgram.HighFloat =
 239       ctx->Const.FragmentProgram.MediumFloat;
 240    ctx->Const.FragmentProgram.MediumInt.RangeMin = 24;
 241    ctx->Const.FragmentProgram.MediumInt.RangeMax = 24;
 242    ctx->Const.FragmentProgram.MediumInt.Precision = 0;
 243    ctx->Const.FragmentProgram.LowInt = ctx->Const.FragmentProgram.HighInt =
 244       ctx->Const.FragmentProgram.MediumInt;
 245
 246    ctx->FragmentProgram._MaintainTexEnvProgram = true;
 247
 248    /* FINISHME: Are there other options that should be enabled for software
 249     * FINISHME: vertex shaders?
 250     */
 251    ctx->ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitCondCodes = true;
 252
 253    struct gl_shader_compiler_options *const fs_options =
 254       & ctx->ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
 255    fs_options->MaxIfDepth = 0;
 256    fs_options->EmitNoNoise = true;
 257    fs_options->EmitNoPow = true;
 258    fs_options->EmitNoMainReturn = true;
 259    fs_options->EmitNoIndirectInput = true;
 260    fs_options->EmitNoIndirectOutput = true;
 261    fs_options->EmitNoIndirectUniform = true;
 262    fs_options->EmitNoIndirectTemp = true;
 263
 264    ctx->Const.MaxDrawBuffers = 1;
 265
 266    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 267                       36 * sizeof(GLfloat));
 268
 269    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 270
 271    i915InitState(i915);
 272
 273    /* Always enable pixel fog.  Vertex fog using fog coord will conflict
 274     * with fog code appended onto fragment program.
 275     */
 276    _tnl_allow_vertex_fog(ctx, 0);
 277    _tnl_allow_pixel_fog(ctx, 1);
 278
 279    _mesa_compute_version(ctx);
 280
 281    _mesa_initialize_dispatch_tables(ctx);
 282    _mesa_initialize_vbo_vtxfmt(ctx);
 283
 284    return true;
 285 }