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      1 /*
      2  * Copyright 2017 Advanced Micro Devices, Inc.
      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  * on the rights to use, copy, modify, merge, publish, distribute, sub
      8  * license, and/or sell copies of the Software, and to permit persons to whom
      9  * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
     18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
     19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
     22  */
     23 
     24 #include "glspirv.h"
     25 #include "errors.h"
     26 #include "util/u_atomic.h"
     27 
     28 void
     29 _mesa_spirv_module_reference(struct gl_spirv_module **dest,
     30                              struct gl_spirv_module *src)
     31 {
     32    struct gl_spirv_module *old = *dest;
     33 
     34    if (old && p_atomic_dec_zero(&old->RefCount))
     35       free(old);
     36 
     37    *dest = src;
     38 
     39    if (src)
     40       p_atomic_inc(&src->RefCount);
     41 }
     42 
     43 void
     44 _mesa_shader_spirv_data_reference(struct gl_shader_spirv_data **dest,
     45                                   struct gl_shader_spirv_data *src)
     46 {
     47    struct gl_shader_spirv_data *old = *dest;
     48 
     49    if (old && p_atomic_dec_zero(&old->RefCount)) {
     50       _mesa_spirv_module_reference(&(*dest)->SpirVModule, NULL);
     51       ralloc_free(old);
     52    }
     53 
     54    *dest = src;
     55 
     56    if (src)
     57       p_atomic_inc(&src->RefCount);
     58 }
     59 
     60 void
     61 _mesa_spirv_shader_binary(struct gl_context *ctx,
     62                           unsigned n, struct gl_shader **shaders,
     63                           const void* binary, size_t length)
     64 {
     65    struct gl_spirv_module *module;
     66    struct gl_shader_spirv_data *spirv_data;
     67 
     68    assert(length >= 0);
     69 
     70    module = malloc(sizeof(*module) + length);
     71    if (!module) {
     72       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glShaderBinary");
     73       return;
     74    }
     75 
     76    p_atomic_set(&module->RefCount, 0);
     77    module->Length = length;
     78    memcpy(&module->Binary[0], binary, length);
     79 
     80    for (int i = 0; i < n; ++i) {
     81       struct gl_shader *sh = shaders[i];
     82 
     83       spirv_data = rzalloc(NULL, struct gl_shader_spirv_data);
     84       _mesa_shader_spirv_data_reference(&sh->spirv_data, spirv_data);
     85       _mesa_spirv_module_reference(&spirv_data->SpirVModule, module);
     86 
     87       sh->CompileStatus = compile_failure;
     88 
     89       free((void *)sh->Source);
     90       sh->Source = NULL;
     91       free((void *)sh->FallbackSource);
     92       sh->FallbackSource = NULL;
     93 
     94       ralloc_free(sh->ir);
     95       sh->ir = NULL;
     96       ralloc_free(sh->symbols);
     97       sh->symbols = NULL;
     98    }
     99 }
    100 
    101 void GLAPIENTRY
    102 _mesa_SpecializeShaderARB(GLuint shader,
    103                           const GLchar *pEntryPoint,
    104                           GLuint numSpecializationConstants,
    105                           const GLuint *pConstantIndex,
    106                           const GLuint *pConstantValue)
    107 {
    108    GET_CURRENT_CONTEXT(ctx);
    109 
    110    /* Just return GL_INVALID_OPERATION error while this is boilerplate */
    111    _mesa_error(ctx, GL_INVALID_OPERATION, "SpecializeShaderARB");
    112 }
    113