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 <stdio.h>
  34 #include <string.h>
  35 #include "util/ralloc.h"
  36
  37 extern "C" void
  38 _mesa_error_no_memory(const char *caller)
  39 {
  40    fprintf(stderr, "Mesa error: out of memory in %s", caller);
  41 }
  42
  43 void
  44 _mesa_warning(struct gl_context *ctx, const char *fmt, ...)
  45 {
  46     va_list vargs;
  47     (void) ctx;
  48
  49     va_start(vargs, fmt);
  50
  51     /* This output is not thread-safe, but that's good enough for the
  52      * standalone compiler.
  53      */
  54     fprintf(stderr, "Mesa warning: ");
  55     vfprintf(stderr, fmt, vargs);
  56     fprintf(stderr, "\n");
  57
  58     va_end(vargs);
  59 }
  60
  61 void
  62 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
  63                        struct gl_shader *sh)
  64 {
  65    (void) ctx;
  66    *ptr = sh;
  67 }
  68
  69 void
  70 _mesa_shader_debug(struct gl_context *, GLenum, GLuint *id,
  71                    const char *, int)
  72 {
  73 }
  74
  75 struct gl_shader *
  76 _mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type)
  77 {
  78    struct gl_shader *shader;
  79
  80    (void) ctx;
  81
  82    assert(type == GL_FRAGMENT_SHADER || type == GL_VERTEX_SHADER);
  83    shader = rzalloc(NULL, struct gl_shader);
  84    if (shader) {
  85       shader->Type = type;
  86       shader->Stage = _mesa_shader_enum_to_shader_stage(type);
  87       shader->Name = name;
  88       shader->RefCount = 1;
  89    }
  90    return shader;
  91 }
  92
  93 void
  94 _mesa_clear_shader_program_data(struct gl_shader_program *shProg)
  95 {
  96    unsigned i;
  97
  98    shProg->NumUniformStorage = 0;
  99    shProg->UniformStorage = NULL;
 100    shProg->NumUniformRemapTable = 0;
 101    shProg->UniformRemapTable = NULL;
 102    shProg->UniformHash = NULL;
 103
 104    ralloc_free(shProg->InfoLog);
 105    shProg->InfoLog = ralloc_strdup(shProg, "");
 106
 107    ralloc_free(shProg->UniformBlocks);
 108    shProg->UniformBlocks = NULL;
 109    shProg->NumUniformBlocks = 0;
 110    for (i = 0; i < MESA_SHADER_STAGES; i++) {
 111       ralloc_free(shProg->UniformBlockStageIndex[i]);
 112       shProg->UniformBlockStageIndex[i] = NULL;
 113    }
 114
 115    ralloc_free(shProg->AtomicBuffers);
 116    shProg->AtomicBuffers = NULL;
 117    shProg->NumAtomicBuffers = 0;
 118 }
 119
 120 void initialize_context_to_defaults(struct gl_context *ctx, gl_api api)
 121 {
 122    memset(ctx, 0, sizeof(*ctx));
 123
 124    ctx->API = api;
 125
 126    ctx->Extensions.dummy_false = false;
 127    ctx->Extensions.dummy_true = true;
 128    ctx->Extensions.ARB_compute_shader = true;
 129    ctx->Extensions.ARB_conservative_depth = true;
 130    ctx->Extensions.ARB_draw_instanced = true;
 131    ctx->Extensions.ARB_ES2_compatibility = true;
 132    ctx->Extensions.ARB_ES3_compatibility = true;
 133    ctx->Extensions.ARB_explicit_attrib_location = true;
 134    ctx->Extensions.ARB_fragment_coord_conventions = true;
 135    ctx->Extensions.ARB_fragment_layer_viewport = true;
 136    ctx->Extensions.ARB_gpu_shader5 = true;
 137    ctx->Extensions.ARB_gpu_shader_fp64 = true;
 138    ctx->Extensions.ARB_sample_shading = true;
 139    ctx->Extensions.ARB_shader_bit_encoding = true;
 140    ctx->Extensions.ARB_shader_stencil_export = true;
 141    ctx->Extensions.ARB_shader_texture_lod = true;
 142    ctx->Extensions.ARB_shading_language_420pack = true;
 143    ctx->Extensions.ARB_shading_language_packing = true;
 144    ctx->Extensions.ARB_texture_cube_map_array = true;
 145    ctx->Extensions.ARB_texture_gather = true;
 146    ctx->Extensions.ARB_texture_multisample = true;
 147    ctx->Extensions.ARB_texture_query_levels = true;
 148    ctx->Extensions.ARB_texture_query_lod = true;
 149    ctx->Extensions.ARB_uniform_buffer_object = true;
 150    ctx->Extensions.ARB_viewport_array = true;
 151
 152    ctx->Extensions.OES_EGL_image_external = true;
 153    ctx->Extensions.OES_standard_derivatives = true;
 154
 155    ctx->Extensions.EXT_shader_integer_mix = true;
 156    ctx->Extensions.EXT_texture3D = true;
 157    ctx->Extensions.EXT_texture_array = true;
 158
 159    ctx->Extensions.NV_texture_rectangle = true;
 160
 161    ctx->Const.GLSLVersion = 120;
 162
 163    /* 1.20 minimums. */
 164    ctx->Const.MaxLights = 8;
 165    ctx->Const.MaxClipPlanes = 6;
 166    ctx->Const.MaxTextureUnits = 2;
 167    ctx->Const.MaxTextureCoordUnits = 2;
 168    ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
 169
 170    ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 512;
 171    ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 32;
 172    ctx->Const.MaxVarying = 8; /* == gl_MaxVaryingFloats / 4 */
 173    ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 0;
 174    ctx->Const.MaxCombinedTextureImageUnits = 2;
 175    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 2;
 176    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 64;
 177    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents = 32;
 178
 179    ctx->Const.MaxDrawBuffers = 1;
 180    ctx->Const.MaxComputeWorkGroupCount[0] = 65535;
 181    ctx->Const.MaxComputeWorkGroupCount[1] = 65535;
 182    ctx->Const.MaxComputeWorkGroupCount[2] = 65535;
 183    ctx->Const.MaxComputeWorkGroupSize[0] = 1024;
 184    ctx->Const.MaxComputeWorkGroupSize[1] = 1024;
 185    ctx->Const.MaxComputeWorkGroupSize[2] = 64;
 186    ctx->Const.MaxComputeWorkGroupInvocations = 1024;
 187    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits = 16;
 188    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformComponents = 1024;
 189    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxInputComponents = 0; /* not used */
 190    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxOutputComponents = 0; /* not used */
 191
 192    /* Set up default shader compiler options. */
 193    struct gl_shader_compiler_options options;
 194    memset(&options, 0, sizeof(options));
 195    options.MaxUnrollIterations = 32;
 196    options.MaxIfDepth = UINT_MAX;
 197
 198    for (int sh = 0; sh < MESA_SHADER_STAGES; ++sh)
 199       memcpy(&ctx->Const.ShaderCompilerOptions[sh], &options, sizeof(options));
 200 }