src/glsl/standalone_scaffolding.cpp

   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_conservative_depth = true;
  94    ctx->Extensions.ARB_draw_instanced = true;
  95    ctx->Extensions.ARB_ES2_compatibility = true;
  96    ctx->Extensions.ARB_ES3_compatibility = true;
  97    ctx->Extensions.ARB_explicit_attrib_location = true;
  98    ctx->Extensions.ARB_fragment_coord_conventions = true;
  99    ctx->Extensions.ARB_gpu_shader5 = true;
 100    ctx->Extensions.ARB_sample_shading = true;
 101    ctx->Extensions.ARB_shader_bit_encoding = true;
 102    ctx->Extensions.ARB_shader_stencil_export = true;
 103    ctx->Extensions.ARB_shader_texture_lod = true;
 104    ctx->Extensions.ARB_shading_language_420pack = true;
 105    ctx->Extensions.ARB_shading_language_packing = true;
 106    ctx->Extensions.ARB_texture_cube_map_array = true;
 107    ctx->Extensions.ARB_texture_gather = true;
 108    ctx->Extensions.ARB_texture_multisample = true;
 109    ctx->Extensions.ARB_texture_query_levels = true;
 110    ctx->Extensions.ARB_texture_query_lod = true;
 111    ctx->Extensions.ARB_uniform_buffer_object = true;
 112
 113    ctx->Extensions.OES_EGL_image_external = true;
 114    ctx->Extensions.OES_standard_derivatives = true;
 115
 116    ctx->Extensions.EXT_shader_integer_mix = true;
 117    ctx->Extensions.EXT_texture3D = true;
 118    ctx->Extensions.EXT_texture_array = true;
 119
 120    ctx->Extensions.NV_texture_rectangle = true;
 121
 122    ctx->Const.GLSLVersion = 120;
 123
 124    /* 1.20 minimums. */
 125    ctx->Const.MaxLights = 8;
 126    ctx->Const.MaxClipPlanes = 6;
 127    ctx->Const.MaxTextureUnits = 2;
 128    ctx->Const.MaxTextureCoordUnits = 2;
 129    ctx->Const.VertexProgram.MaxAttribs = 16;
 130
 131    ctx->Const.VertexProgram.MaxUniformComponents = 512;
 132    ctx->Const.VertexProgram.MaxOutputComponents = 32;
 133    ctx->Const.MaxVarying = 8; /* == gl_MaxVaryingFloats / 4 */
 134    ctx->Const.VertexProgram.MaxTextureImageUnits = 0;
 135    ctx->Const.MaxCombinedTextureImageUnits = 2;
 136    ctx->Const.FragmentProgram.MaxTextureImageUnits = 2;
 137    ctx->Const.FragmentProgram.MaxUniformComponents = 64;
 138    ctx->Const.FragmentProgram.MaxInputComponents = 32;
 139
 140    ctx->Const.MaxDrawBuffers = 1;
 141
 142    /* Set up default shader compiler options. */
 143    struct gl_shader_compiler_options options;
 144    memset(&options, 0, sizeof(options));
 145    options.MaxUnrollIterations = 32;
 146    options.MaxIfDepth = UINT_MAX;
 147
 148    /* Default pragma settings */
 149    options.DefaultPragmas.Optimize = true;
 150
 151    for (int sh = 0; sh < MESA_SHADER_TYPES; ++sh)
 152       memcpy(&ctx->ShaderCompilerOptions[sh], &options, sizeof(options));
 153 }