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/extensions.h"
  32 #include "util/imports.h"
  33 #include "main/macros.h"
  34 #include "main/version.h"
  35 #include "main/vtxfmt.h"
  36 #include "intel_chipset.h"
  37 #include "intel_tris.h"
  38 #include "tnl/t_context.h"
  39 #include "tnl/t_pipeline.h"
  40 #include "tnl/t_vertex.h"
  41
  42 #include "swrast/swrast.h"
  43 #include "swrast_setup/swrast_setup.h"
  44 #include "tnl/tnl.h"
  45 #include "util/ralloc.h"
  46
  47 #include "i915_reg.h"
  48 #include "i915_program.h"
  49
  50 /***************************************
  51  * Mesa's Driver Functions
  52  ***************************************/
  53
  54 /* Override intel default.
  55  */
  56 static void
  57 i915InvalidateState(struct gl_context * ctx)
  58 {
  59    GLuint new_state = ctx->NewState;
  60
  61    _swrast_InvalidateState(ctx, new_state);
  62    _swsetup_InvalidateState(ctx, new_state);
  63    _tnl_InvalidateState(ctx, new_state);
  64    _tnl_invalidate_vertex_state(ctx, new_state);
  65    intel_context(ctx)->NewGLState |= new_state;
  66
  67    if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT))
  68       _mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer);
  69
  70    /* Todo: gather state values under which tracked parameters become
  71     * invalidated, add callbacks for things like
  72     * ProgramLocalParameters, etc.
  73     */
  74    {
  75       struct i915_fragment_program *p =
  76          (struct i915_fragment_program *) ctx->FragmentProgram._Current;
  77       if (p && p->nr_params)
  78          p->params_uptodate = 0;
  79    }
  80
  81    if (new_state & (_NEW_STENCIL | _NEW_BUFFERS | _NEW_POLYGON))
  82       i915_update_stencil(ctx);
  83    if (new_state & (_NEW_LIGHT))
  84        i915_update_provoking_vertex(ctx);
  85    if (new_state & (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS))
  86        i915_update_program(ctx);
  87    if (new_state & (_NEW_PROGRAM | _NEW_POINT))
  88        i915_update_sprite_point_enable(ctx);
  89 }
  90
  91
  92 static void
  93 i915InitDriverFunctions(struct dd_function_table *functions)
  94 {
  95    intelInitDriverFunctions(functions);
  96    i915InitStateFunctions(functions);
  97    i915InitFragProgFuncs(functions);
  98    functions->UpdateState = i915InvalidateState;
  99 }
 100
 101 /* Note: this is shared with i830. */
 102 void
 103 intel_init_texture_formats(struct gl_context *ctx)
 104 {
 105    struct intel_context *intel = intel_context(ctx);
 106    struct intel_screen *intel_screen = intel->intelScreen;
 107
 108    ctx->TextureFormatSupported[MESA_FORMAT_B8G8R8A8_UNORM] = true;
 109    if (intel_screen->deviceID != PCI_CHIP_I830_M &&
 110        intel_screen->deviceID != PCI_CHIP_845_G)
 111       ctx->TextureFormatSupported[MESA_FORMAT_B8G8R8X8_UNORM] = true;
 112    if (intel->gen == 3)
 113       ctx->TextureFormatSupported[MESA_FORMAT_B8G8R8A8_SRGB] = true;
 114    ctx->TextureFormatSupported[MESA_FORMAT_B4G4R4A4_UNORM] = true;
 115    ctx->TextureFormatSupported[MESA_FORMAT_B5G5R5A1_UNORM] = true;
 116    ctx->TextureFormatSupported[MESA_FORMAT_B5G6R5_UNORM] = true;
 117    ctx->TextureFormatSupported[MESA_FORMAT_L_UNORM8] = true;
 118    if (intel->gen == 3)
 119       ctx->TextureFormatSupported[MESA_FORMAT_A_UNORM8] = true;
 120    ctx->TextureFormatSupported[MESA_FORMAT_I_UNORM8] = true;
 121    ctx->TextureFormatSupported[MESA_FORMAT_LA_UNORM8] = true;
 122
 123    /* Depth and stencil */
 124    if (intel->gen == 3) {
 125       ctx->TextureFormatSupported[MESA_FORMAT_Z24_UNORM_S8_UINT] = true;
 126       ctx->TextureFormatSupported[MESA_FORMAT_Z24_UNORM_X8_UINT] = true;
 127
 128       /*
 129        * This was disabled in initial FBO enabling to avoid combinations
 130        * of depth+stencil that wouldn't work together.  We since decided
 131        * that it was OK, since it's up to the app to come up with the
 132        * combo that actually works, so this can probably be re-enabled.
 133        */
 134       /*
 135       ctx->TextureFormatSupported[MESA_FORMAT_Z_UNORM16] = true;
 136       ctx->TextureFormatSupported[MESA_FORMAT_Z24] = true;
 137       */
 138    }
 139
 140    /* ctx->Extensions.MESA_ycbcr_texture */
 141    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR] = true;
 142    ctx->TextureFormatSupported[MESA_FORMAT_YCBCR_REV] = true;
 143
 144    /* GL_3DFX_texture_compression_FXT1 */
 145    ctx->TextureFormatSupported[MESA_FORMAT_RGB_FXT1] = true;
 146    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_FXT1] = true;
 147
 148    /* GL_EXT_texture_compression_s3tc */
 149    ctx->TextureFormatSupported[MESA_FORMAT_RGB_DXT1] = true;
 150    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT1] = true;
 151    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT3] = true;
 152    ctx->TextureFormatSupported[MESA_FORMAT_RGBA_DXT5] = true;
 153 }
 154
 155 extern const struct tnl_pipeline_stage *intel_pipeline[];
 156
 157 bool
 158 i915CreateContext(int api,
 159                   const struct gl_config * mesaVis,
 160                   __DRIcontext * driContextPriv,
 161                   unsigned major_version,
 162                   unsigned minor_version,
 163                   uint32_t flags,
 164                   unsigned *error,
 165                   void *sharedContextPrivate)
 166 {
 167    struct dd_function_table functions;
 168    struct i915_context *i915 = rzalloc(NULL, struct i915_context);
 169    struct intel_context *intel = &i915->intel;
 170    struct gl_context *ctx = &intel->ctx;
 171
 172    if (!i915) {
 173       *error = __DRI_CTX_ERROR_NO_MEMORY;
 174       return false;
 175    }
 176
 177    i915InitVtbl(i915);
 178
 179    i915InitDriverFunctions(&functions);
 180
 181    if (!intelInitContext(intel, api, major_version, minor_version, flags,
 182                          mesaVis, driContextPriv,
 183                          sharedContextPrivate, &functions,
 184                          error)) {
 185       ralloc_free(i915);
 186       return false;
 187    }
 188
 189    intel_init_texture_formats(ctx);
 190
 191    _math_matrix_ctr(&intel->ViewportMatrix);
 192
 193    /* Initialize swrast, tnl driver tables: */
 194    intelInitTriFuncs(ctx);
 195
 196    /* Install the customized pipeline: */
 197    _tnl_destroy_pipeline(ctx);
 198    _tnl_install_pipeline(ctx, intel_pipeline);
 199
 200    if (intel->no_rast)
 201       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 202
 203    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 204    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = I915_TEX_UNITS;
 205    ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = I915_TEX_UNITS;
 206    ctx->Const.MaxTextureCoordUnits = I915_TEX_UNITS;
 207    ctx->Const.MaxVarying = I915_TEX_UNITS;
 208    ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents =
 209       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents = ctx->Const.MaxVarying * 4;
 210    ctx->Const.MaxCombinedTextureImageUnits =
 211       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
 212       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits;
 213
 214    /* Advertise the full hardware capabilities.  The new memory
 215     * manager should cope much better with overload situations:
 216     */
 217    ctx->Const.MaxTextureSize = 2048;
 218    ctx->Const.Max3DTextureLevels = 9;
 219    ctx->Const.MaxCubeTextureLevels = 12;
 220    ctx->Const.MaxTextureRectSize = (1 << 11);
 221    ctx->Const.MaxTextureUnits = I915_TEX_UNITS;
 222
 223    ctx->Const.MaxTextureMaxAnisotropy = 4.0;
 224
 225    /* GL_ARB_fragment_program limits - don't think Mesa actually
 226     * validates programs against these, and in any case one ARB
 227     * instruction can translate to more than one HW instruction, so
 228     * we'll still have to check and fallback each time.
 229     */
 230    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTemps = I915_MAX_TEMPORARY;
 231    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAttribs = 11;    /* 8 tex, 2 color, fog */
 232    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeParameters = I915_MAX_CONSTANT;
 233    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAluInstructions = I915_MAX_ALU_INSN;
 234    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTexInstructions = I915_MAX_TEX_INSN;
 235    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeInstructions = (I915_MAX_ALU_INSN +
 236                                                        I915_MAX_TEX_INSN);
 237    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeTexIndirections =
 238       I915_MAX_TEX_INDIRECT;
 239    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeAddressRegs = 0; /* I don't think we have one */
 240    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams =
 241       MIN2(ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxNativeParameters,
 242            ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxEnvParams);
 243
 244    /* i915 stores all values in single-precision floats.  Values aren't set
 245     * for other program targets because software is used for those targets.
 246     */
 247    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat.RangeMin = 127;
 248    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat.RangeMax = 127;
 249    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat.Precision = 23;
 250    ctx->Const.Program[MESA_SHADER_FRAGMENT].LowFloat = ctx->Const.Program[MESA_SHADER_FRAGMENT].HighFloat =
 251       ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumFloat;
 252    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt.RangeMin = 24;
 253    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt.RangeMax = 24;
 254    ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt.Precision = 0;
 255    ctx->Const.Program[MESA_SHADER_FRAGMENT].LowInt = ctx->Const.Program[MESA_SHADER_FRAGMENT].HighInt =
 256       ctx->Const.Program[MESA_SHADER_FRAGMENT].MediumInt;
 257
 258    ctx->FragmentProgram._MaintainTexEnvProgram = true;
 259
 260    /* FINISHME: Are there other options that should be enabled for software
 261     * FINISHME: vertex shaders?
 262     */
 263    ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].EmitNoIndirectSampler =
 264       true;
 265
 266    struct gl_shader_compiler_options *const fs_options =
 267       & ctx->Const.ShaderCompilerOptions[MESA_SHADER_FRAGMENT];
 268    fs_options->MaxIfDepth = 0;
 269    fs_options->EmitNoPow = true;
 270    fs_options->EmitNoMainReturn = true;
 271    fs_options->EmitNoIndirectInput = true;
 272    fs_options->EmitNoIndirectOutput = true;
 273    fs_options->EmitNoIndirectUniform = true;
 274    fs_options->EmitNoIndirectTemp = true;
 275    fs_options->EmitNoIndirectSampler = true;
 276
 277    ctx->Const.MaxDrawBuffers = 1;
 278    ctx->Const.QueryCounterBits.SamplesPassed = 0;
 279
 280    _tnl_init_vertices(ctx, ctx->Const.MaxArrayLockSize + 12,
 281                       36 * sizeof(GLfloat));
 282
 283    intel->verts = TNL_CONTEXT(ctx)->clipspace.vertex_buf;
 284
 285    i915InitState(i915);
 286
 287    /* Always enable pixel fog.  Vertex fog using fog coord will conflict
 288     * with fog code appended onto fragment program.
 289     */
 290    _tnl_allow_vertex_fog(ctx, 0);
 291    _tnl_allow_pixel_fog(ctx, 1);
 292
 293    _mesa_override_extensions(ctx);
 294    _mesa_compute_version(ctx);
 295
 296    _mesa_initialize_dispatch_tables(ctx);
 297    _mesa_initialize_vbo_vtxfmt(ctx);
 298
 299    return true;
 300 }