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/*
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "main/core.h"
#include "ir.h"
#include "linker.h"
#include "ir_uniform.h"
#include "program.h"
bool
link_uniform_blocks_are_compatible(const gl_uniform_block *a,
const gl_uniform_block *b)
{
assert(strcmp(a->Name, b->Name) == 0);
/* Page 35 (page 42 of the PDF) in section 4.3.7 of the GLSL 1.50 spec says:
*
* "Matched block names within an interface (as defined above) must
* match in terms of having the same number of declarations with the
* same sequence of types and the same sequence of member names, as
* well as having the same member-wise layout qualification....if a
* matching block is declared as an array, then the array sizes must
* also match... Any mismatch will generate a link error."
*
* Arrays are not yet supported, so there is no check for that.
*/
if (a->NumUniforms != b->NumUniforms)
return false;
if (a->_Packing != b->_Packing)
return false;
for (unsigned i = 0; i < a->NumUniforms; i++) {
if (strcmp(a->Uniforms[i].Name, b->Uniforms[i].Name) != 0)
return false;
if (a->Uniforms[i].Type != b->Uniforms[i].Type)
return false;
if (a->Uniforms[i].RowMajor != b->Uniforms[i].RowMajor)
return false;
}
return true;
}
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