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  1. /*
  2.  * Copyright © 2011 Intel Corporation
  3.  *
  4.  * Permission is hereby granted, free of charge, to any person obtaining a
  5.  * copy of this software and associated documentation files (the "Software"),
  6.  * to deal in the Software without restriction, including without limitation
  7.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8.  * and/or sell copies of the Software, and to permit persons to whom the
  9.  * Software is furnished to do so, subject to the following conditions:
  10.  *
  11.  * The above copyright notice and this permission notice (including the next
  12.  * paragraph) shall be included in all copies or substantial portions of the
  13.  * Software.
  14.  *
  15.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21.  * DEALINGS IN THE SOFTWARE.
  22.  */
  23.  
  24. /* This file declares stripped-down versions of functions that
  25.  * normally exist outside of the glsl folder, so that they can be used
  26.  * when running the GLSL compiler standalone (for unit testing or
  27.  * compiling builtins).
  28.  */
  29.  
  30. #include "standalone_scaffolding.h"
  31.  
  32. #include <assert.h>
  33. #include <string.h>
  34. #include "ralloc.h"
  35.  
  36. void
  37. _mesa_warning(struct gl_context *ctx, const char *fmt, ...)
  38. {
  39.     va_list vargs;
  40.     (void) ctx;
  41.  
  42.     va_start(vargs, fmt);
  43.  
  44.     /* This output is not thread-safe, but that's good enough for the
  45.      * standalone compiler.
  46.      */
  47.     fprintf(stderr, "Mesa warning: ");
  48.     vfprintf(stderr, fmt, vargs);
  49.     fprintf(stderr, "\n");
  50.  
  51.     va_end(vargs);
  52. }
  53.  
  54. void
  55. _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
  56.                        struct gl_shader *sh)
  57. {
  58.    (void) ctx;
  59.    *ptr = sh;
  60. }
  61.  
  62. void
  63. _mesa_shader_debug(struct gl_context *, GLenum, GLuint *id,
  64.                    const char *, int)
  65. {
  66. }
  67.  
  68. struct gl_shader *
  69. _mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type)
  70. {
  71.    struct gl_shader *shader;
  72.  
  73.    (void) ctx;
  74.  
  75.    assert(type == GL_FRAGMENT_SHADER || type == GL_VERTEX_SHADER);
  76.    shader = rzalloc(NULL, struct gl_shader);
  77.    if (shader) {
  78.       shader->Type = type;
  79.       shader->Name = name;
  80.       shader->RefCount = 1;
  81.    }
  82.    return shader;
  83. }
  84.  
  85. void initialize_context_to_defaults(struct gl_context *ctx, gl_api api)
  86. {
  87.    memset(ctx, 0, sizeof(*ctx));
  88.  
  89.    ctx->API = api;
  90.  
  91.    ctx->Extensions.dummy_false = false;
  92.    ctx->Extensions.dummy_true = true;
  93.    ctx->Extensions.ARB_ES2_compatibility = true;
  94.    ctx->Extensions.ARB_ES3_compatibility = false;
  95.    ctx->Extensions.ARB_draw_instanced = true;
  96.    ctx->Extensions.ARB_fragment_coord_conventions = true;
  97.    ctx->Extensions.EXT_texture_array = true;
  98.    ctx->Extensions.NV_texture_rectangle = true;
  99.    ctx->Extensions.EXT_texture3D = true;
  100.    ctx->Extensions.OES_EGL_image_external = true;
  101.    ctx->Extensions.ARB_shader_bit_encoding = true;
  102.    ctx->Extensions.ARB_shading_language_packing = true;
  103.    ctx->Extensions.OES_standard_derivatives = true;
  104.    ctx->Extensions.ARB_texture_cube_map_array = true;
  105.    ctx->Extensions.ARB_texture_multisample = true;
  106.    ctx->Extensions.ARB_texture_query_lod = true;
  107.    ctx->Extensions.ARB_gpu_shader5 = true;
  108.  
  109.    ctx->Const.GLSLVersion = 120;
  110.  
  111.    /* 1.20 minimums. */
  112.    ctx->Const.MaxLights = 8;
  113.    ctx->Const.MaxClipPlanes = 6;
  114.    ctx->Const.MaxTextureUnits = 2;
  115.    ctx->Const.MaxTextureCoordUnits = 2;
  116.    ctx->Const.VertexProgram.MaxAttribs = 16;
  117.  
  118.    ctx->Const.VertexProgram.MaxUniformComponents = 512;
  119.    ctx->Const.MaxVarying = 8; /* == gl_MaxVaryingFloats / 4 */
  120.    ctx->Const.VertexProgram.MaxTextureImageUnits = 0;
  121.    ctx->Const.MaxCombinedTextureImageUnits = 2;
  122.    ctx->Const.FragmentProgram.MaxTextureImageUnits = 2;
  123.    ctx->Const.FragmentProgram.MaxUniformComponents = 64;
  124.  
  125.    ctx->Const.MaxDrawBuffers = 1;
  126.  
  127.    /* Set up default shader compiler options. */
  128.    struct gl_shader_compiler_options options;
  129.    memset(&options, 0, sizeof(options));
  130.    options.MaxUnrollIterations = 32;
  131.    options.MaxIfDepth = UINT_MAX;
  132.  
  133.    /* Default pragma settings */
  134.    options.DefaultPragmas.Optimize = true;
  135.  
  136.    for (int sh = 0; sh < MESA_SHADER_TYPES; ++sh)
  137.       memcpy(&ctx->ShaderCompilerOptions[sh], &options, sizeof(options));
  138. }
  139.