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 #include "util/strtod.h"
  37
  38 extern "C" void
  39 _mesa_error_no_memory(const char *caller)
  40 {
  41    fprintf(stderr, "Mesa error: out of memory in %s", caller);
  42 }
  43
  44 void
  45 _mesa_warning(struct gl_context *ctx, const char *fmt, ...)
  46 {
  47     va_list vargs;
  48     (void) ctx;
  49
  50     va_start(vargs, fmt);
  51
  52     /* This output is not thread-safe, but that's good enough for the
  53      * standalone compiler.
  54      */
  55     fprintf(stderr, "Mesa warning: ");
  56     vfprintf(stderr, fmt, vargs);
  57     fprintf(stderr, "\n");
  58
  59     va_end(vargs);
  60 }
  61
  62 void
  63 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
  64                        struct gl_shader *sh)
  65 {
  66    (void) ctx;
  67    *ptr = sh;
  68 }
  69
  70 void
  71 _mesa_shader_debug(struct gl_context *, GLenum, GLuint *id,
  72                    const char *, int)
  73 {
  74 }
  75
  76 struct gl_shader *
  77 _mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type)
  78 {
  79    struct gl_shader *shader;
  80
  81    (void) ctx;
  82
  83    assert(type == GL_FRAGMENT_SHADER || type == GL_VERTEX_SHADER);
  84    shader = rzalloc(NULL, struct gl_shader);
  85    if (shader) {
  86       shader->Type = type;
  87       shader->Stage = _mesa_shader_enum_to_shader_stage(type);
  88       shader->Name = name;
  89       shader->RefCount = 1;
  90    }
  91    return shader;
  92 }
  93
  94 void
  95 _mesa_clear_shader_program_data(struct gl_shader_program *shProg)
  96 {
  97    unsigned i;
  98
  99    shProg->NumUniformStorage = 0;
 100    shProg->UniformStorage = NULL;
 101    shProg->NumUniformRemapTable = 0;
 102    shProg->UniformRemapTable = NULL;
 103    shProg->UniformHash = NULL;
 104
 105    ralloc_free(shProg->InfoLog);
 106    shProg->InfoLog = ralloc_strdup(shProg, "");
 107
 108    ralloc_free(shProg->UniformBlocks);
 109    shProg->UniformBlocks = NULL;
 110    shProg->NumUniformBlocks = 0;
 111    for (i = 0; i < MESA_SHADER_STAGES; i++) {
 112       ralloc_free(shProg->UniformBlockStageIndex[i]);
 113       shProg->UniformBlockStageIndex[i] = NULL;
 114    }
 115
 116    ralloc_free(shProg->AtomicBuffers);
 117    shProg->AtomicBuffers = NULL;
 118    shProg->NumAtomicBuffers = 0;
 119 }
 120
 121 void initialize_context_to_defaults(struct gl_context *ctx, gl_api api)
 122 {
 123    memset(ctx, 0, sizeof(*ctx));
 124
 125    ctx->API = api;
 126
 127    ctx->Extensions.dummy_false = false;
 128    ctx->Extensions.dummy_true = true;
 129    ctx->Extensions.ARB_compute_shader = true;
 130    ctx->Extensions.ARB_conservative_depth = true;
 131    ctx->Extensions.ARB_draw_instanced = true;
 132    ctx->Extensions.ARB_ES2_compatibility = true;
 133    ctx->Extensions.ARB_ES3_compatibility = true;
 134    ctx->Extensions.ARB_explicit_attrib_location = true;
 135    ctx->Extensions.ARB_fragment_coord_conventions = true;
 136    ctx->Extensions.ARB_fragment_layer_viewport = true;
 137    ctx->Extensions.ARB_gpu_shader5 = true;
 138    ctx->Extensions.ARB_gpu_shader_fp64 = true;
 139    ctx->Extensions.ARB_sample_shading = true;
 140    ctx->Extensions.ARB_shader_bit_encoding = true;
 141    ctx->Extensions.ARB_shader_stencil_export = true;
 142    ctx->Extensions.ARB_shader_subroutine = true;
 143    ctx->Extensions.ARB_shader_texture_lod = true;
 144    ctx->Extensions.ARB_shading_language_420pack = true;
 145    ctx->Extensions.ARB_shading_language_packing = true;
 146    ctx->Extensions.ARB_tessellation_shader = true;
 147    ctx->Extensions.ARB_texture_cube_map_array = true;
 148    ctx->Extensions.ARB_texture_gather = true;
 149    ctx->Extensions.ARB_texture_multisample = true;
 150    ctx->Extensions.ARB_texture_query_levels = true;
 151    ctx->Extensions.ARB_texture_query_lod = true;
 152    ctx->Extensions.ARB_uniform_buffer_object = true;
 153    ctx->Extensions.ARB_viewport_array = true;
 154
 155    ctx->Extensions.OES_EGL_image_external = true;
 156    ctx->Extensions.OES_standard_derivatives = true;
 157
 158    ctx->Extensions.EXT_shader_integer_mix = true;
 159    ctx->Extensions.EXT_texture3D = true;
 160    ctx->Extensions.EXT_texture_array = true;
 161
 162    ctx->Extensions.NV_texture_rectangle = true;
 163
 164    ctx->Const.GLSLVersion = 120;
 165
 166    /* 1.20 minimums. */
 167    ctx->Const.MaxLights = 8;
 168    ctx->Const.MaxClipPlanes = 6;
 169    ctx->Const.MaxTextureUnits = 2;
 170    ctx->Const.MaxTextureCoordUnits = 2;
 171    ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
 172
 173    ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 512;
 174    ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 32;
 175    ctx->Const.MaxVarying = 8; /* == gl_MaxVaryingFloats / 4 */
 176    ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 0;
 177    ctx->Const.MaxCombinedTextureImageUnits = 2;
 178    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 2;
 179    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 64;
 180    ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents = 32;
 181
 182    ctx->Const.MaxDrawBuffers = 1;
 183    ctx->Const.MaxComputeWorkGroupCount[0] = 65535;
 184    ctx->Const.MaxComputeWorkGroupCount[1] = 65535;
 185    ctx->Const.MaxComputeWorkGroupCount[2] = 65535;
 186    ctx->Const.MaxComputeWorkGroupSize[0] = 1024;
 187    ctx->Const.MaxComputeWorkGroupSize[1] = 1024;
 188    ctx->Const.MaxComputeWorkGroupSize[2] = 64;
 189    ctx->Const.MaxComputeWorkGroupInvocations = 1024;
 190    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits = 16;
 191    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformComponents = 1024;
 192    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxInputComponents = 0; /* not used */
 193    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxOutputComponents = 0; /* not used */
 194
 195    /* Set up default shader compiler options. */
 196    struct gl_shader_compiler_options options;
 197    memset(&options, 0, sizeof(options));
 198    options.MaxUnrollIterations = 32;
 199    options.MaxIfDepth = UINT_MAX;
 200
 201    for (int sh = 0; sh < MESA_SHADER_STAGES; ++sh)
 202       memcpy(&ctx->Const.ShaderCompilerOptions[sh], &options, sizeof(options));
 203
 204    _mesa_locale_init();
 205 }