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/framebuffer.h"
  31 #include "main/imports.h"
  32 #include "main/macros.h"
  33 #include "main/version.h"
  34 #include "main/vtxfmt.h"
  35 #include "intel_chipset.h"
  36 #include "intel_tris.h"
  37 #include "tnl/t_context.h"
  38 #include "tnl/t_pipeline.h"
  39 #include "tnl/t_vertex.h"
  40
  41 #include "swrast/swrast.h"
  42 #include "swrast_setup/swrast_setup.h"
  43 #include "tnl/tnl.h"
  44 #include "util/ralloc.h"
  45
  46 #include "i915_reg.h"
  47 #include "i915_program.h"
  48
  49 /***************************************
  50  * Mesa's Driver Functions
  51  ***************************************/
  52
  53 /* Override intel default.
  54  */
  55 static void
  56 i915InvalidateState(struct gl_context * ctx)
  57 {
  58    GLuint new_state = ctx->NewState;
  59
  60    _swrast_InvalidateState(ctx, new_state);
  61    _swsetup_InvalidateState(ctx, new_state);
  62    _tnl_InvalidateState(ctx, new_state);
  63    _tnl_invalidate_vertex_state(ctx, new_state);
  64    intel_context(ctx)->NewGLState |= new_state;
  65
  66    if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT))
  67       _mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer);
  68
  69    /* Todo: gather state values under which tracked parameters become
  70     * invalidated, add callbacks for things like
  71     * ProgramLocalParameters, etc.
  72     */
  73    {
  74       struct i915_fragment_program *p =
  75          (struct i915_fragment_program *) ctx->FragmentProgram._Current;
  76       if (p && p->nr_params)
  77          p->params_uptodate = 0;
  78    }
  79
  80    if (new_state & (_NEW_STENCIL | _NEW_BUFFERS | _NEW_POLYGON))
  81       i915_update_stencil(ctx);
  82    if (new_state & (_NEW_LIGHT))
  83        i915_update_provoking_vertex(ctx);
  84    if (new_state & (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS))
  85        i915_update_program(ctx);
  86    if (new_state & (_NEW_PROGRAM | _NEW_POINT))
  87        i915_update_sprite_point_enable(ctx);
  88 }
  89
  90
  91 static void
  92 i915InitDriverFunctions(struct dd_function_table *functions)
  93 {
  94    intelInitDriverFunctions(functions);
  95    i915InitStateFunctions(functions);
  96    i915InitFragProgFuncs(functions);
  97    functions->UpdateState = i915InvalidateState;
  98 }
  99
 100 /* Note: this is shared with i830. */
 101 void
 102 intel_init_texture_formats(struct gl_context *ctx)
 103 {
 104    struct intel_context *intel = intel_context(ctx);
 105    struct intel_screen *intel_screen = intel->intelScreen;
 106
 107    ctx->TextureFormatSupported[MESA_FORMAT_B8G8R8A8_UNORM] = true;
 108    if (intel_screen->deviceID != PCI_CHIP_I830_M &&
 109        intel_screen->deviceID != PCI_CHIP_845_G)
 110       ctx->TextureFormatSupported[MESA_FORMAT_B8G8R8X8_UNORM] = true;
 111    if (intel->gen == 3)
 112       ctx->TextureFormatSupported[MESA_FORMAT_B8G8R8A8_SRGB] = true;
 113    ctx->TextureFormatSupported[MESA_FORMAT_B4G4R4A4_UNORM] = true;
 114    ctx->TextureFormatSupported[MESA_FORMAT_B5G5R5A1_UNORM] = true;
 115    ctx->TextureFormatSupported[MESA_FORMAT_B5G6R5_UNORM] = true;
 116    ctx->TextureFormatSupported[MESA_FORMAT_L_UNORM8] = true;
 117    if (intel->gen == 3)
 118       ctx->TextureFormatSupported[MESA_FORMAT_A_UNORM8] = true;
 119    ctx->TextureFormatSupported[MESA_FORMAT_I_UNORM8] = true;
 120    ctx->TextureFormatSupported[MESA_FORMAT_L8A8_UNORM] = true;
 121
 122    /* Depth and stencil */
 123    if (intel->gen == 3) {
 124       ctx->TextureFormatSupported[MESA_FORMAT_Z24_UNORM_S8_UINT] = true;
 125       ctx->TextureFormatSupported[MESA_FORMAT_Z24_UNORM_X8_UINT] = true;
 126
 127       /*
 128        * This was disabled in initial FBO enabling to avoid combinations
 129        * of depth+stencil that wouldn't work together.  We since decided
 130        * that it was OK, since it's up to the app to come up with the
 131        * combo that actually works, so this can probably be re-enabled.
 132        */
 133       /*
 134       ctx->TextureFormatSupported[MESA_FORMAT_Z_UNORM16] = true;
 135       ctx->TextureFormatSupported[MESA_FORMAT_Z24] = true;
 136       */
 137    }
 138
 139    /* ctx->Extensions.MESA_ycbcr_texture */
 140    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = true;
 141    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = true;
 142
 143    /* GL_3DFX_texture_compression_FXT1 */
 144    ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = true;
 145    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = true;
 146
 147    /* GL_EXT_texture_compression_s3tc */
 148    ctx->TextureFormatSupported[MESA_FORMAT_RGB_DXT1] = true;
 149    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT1] = true;
 150    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT3] = true;
 151    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT5] = true;
 152 }
 153
 154 extern const struct tnl_pipeline_stage *intel_pipeline[];
 155
 156 bool
 157 i915CreateContext(int api,
 158                   const struct gl_config * mesaVis,
 159                   __DRIcontext * driContextPriv,
 160                   unsigned major_version,
 161                   unsigned minor_version,
 162                   uint32_t flags,
 163                   unsigned *error,
 164                   void *sharedContextPrivate)
 165 {
 166    struct dd_function_table functions;
 167    struct i915_context *i915 = rzalloc(NULL, struct i915_context);
 168    struct intel_context *intel = &i915->intel;
 169    struct gl_context *ctx = &intel->ctx;
 170
 171    if (!i915) {
 172       *error = __DRI_CTX_ERROR_NO_MEMORY;
 173       return false;
 174    }
 175
 176    i915InitVtbl(i915);
 177
 178    i915InitDriverFunctions(&functions);
 179
 180    if (!intelInitContext(intel, api, major_version, minor_version, flags,
 181                          mesaVis, driContextPriv,
 182                          sharedContextPrivate, &functions,
 183                          error)) {
 184       ralloc_free(i915);
 185       return false;
 186    }
 187
 188    intel_init_texture_formats(ctx);
 189
 190    _math_matrix_ctr(&intel->ViewportMatrix);
 191
 192    /* Initialize swrast, tnl driver tables: */
 193    intelInitTriFuncs(ctx);
 194
 195    /* Install the customized pipeline: */
 196    _tnl_destroy_pipeline(ctx);
 197    _tnl_install_pipeline(ctx, intel_pipeline);
 198
 199    if (intel->no_rast)
 200       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 201
 202    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 203    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = I915_TEX_UNITS;
 204    ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = I915_TEX_UNITS;
 205    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 206    ctx->Const.MaxVarying = I915_TEX_UNITS;
 207    ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents =
 208       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents = ctx->Const.MaxVarying * 4;
 209    ctx->Const.MaxCombinedTextureImageUnits =
 210       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
 211       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits;
 212
 213    /* Advertise the full hardware capabilities.  The new memory
 214     * manager should cope much better with overload situations:
 215     */
 216    ctx->Const.MaxTextureLevels = 12;
 217    ctx->Const.Max3DTextureLevels = 9;
 218    ctx->Const.MaxCubeTextureLevels = 12;
 219    ctx->Const.MaxTextureRectSize = (1 << 11);
 220    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 221
 222    ctx->Const.MaxTextureMaxAnisotropy = 4.0;
 223
 224    /* GL_ARB_fragment_program limits - don't think Mesa actually
 225     * validates programs against these, and in any case one ARB
 226     * instruction can translate to more than one HW instruction, so
 227     * we'll still have to check and fallback each time.
 228     */
 229    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTemps = I915_MAX_TEMPORARY;
 230    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
 231    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeParameters = I915_MAX_CONSTANT;
 232    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAluInstructions = I915_MAX_ALU_INSN;
 233    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTexInstructions = I915_MAX_TEX_INSN;
 234    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeInstructions = (I915_MAX_ALU_INSN +
 235                                                        I915_MAX_TEX_INSN);
 236    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTexIndirections =
 237       I915_MAX_TEX_INDIRECT;
 238    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAddressRegs = 0; /* I don't think we have one */
 239    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams =
 240       MIN2(ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeParameters,
 241            ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams);
 242
 243    /* i915 stores all values in single-precision floats.  Values aren't set
 244     * for other program targets because software is used for those targets.
 245     */
 246    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat.RangeMin = 127;
 247    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat.RangeMax = 127;
 248    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat.Precision = 23;
 249    ctx->Const.Program[MESA_SHADER_FRAGMENT].LowFloat = ctx->Const.Program[MESA_SHADER_FRAGMENT].HighFloat =
 250       ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat;
 251    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt.RangeMin = 24;
 252    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt.RangeMax = 24;
 253    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt.Precision = 0;
 254    ctx->Const.Program[MESA_SHADER_FRAGMENT].LowInt = ctx->Const.Program[MESA_SHADER_FRAGMENT].HighInt =
 255       ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt;
 256
 257    ctx->FragmentProgram._MaintainTexEnvProgram = true;
 258
 259    /* FINISHME: Are there other options that should be enabled for software
 260     * FINISHME: vertex shaders?
 261     */
 262    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoIndirectSampler =
 263       true;
 264
 265    struct gl_shader_compiler_options *const fs_options =
 266       & ctx->Const.ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
 267    fs_options->MaxIfDepth = 0;
 268    fs_options->EmitNoPow = true;
 269    fs_options->EmitNoMainReturn = true;
 270    fs_options->EmitNoIndirectInput = true;
 271    fs_options->EmitNoIndirectOutput = true;
 272    fs_options->EmitNoIndirectUniform = true;
 273    fs_options->EmitNoIndirectTemp = true;
 274    fs_options->EmitNoIndirectSampler = true;
 275
 276    ctx->Const.MaxDrawBuffers = 1;
 277    ctx->Const.QueryCounterBits.SamplesPassed = 0;
 278
 279    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 280                       36 * sizeof(GLfloat));
 281
 282    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 283
 284    i915InitState(i915);
 285
 286    /* Always enable pixel fog.  Vertex fog using fog coord will conflict
 287     * with fog code appended onto fragment program.
 288     */
 289    _tnl_allow_vertex_fog(ctx, 0);
 290    _tnl_allow_pixel_fog(ctx, 1);
 291
 292    _mesa_compute_version(ctx);
 293
 294    _mesa_initialize_dispatch_tables(ctx);
 295    _mesa_initialize_vbo_vtxfmt(ctx);
 296
 297    return true;
 298 }