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/*-------------------------------------------------------------------------
* drawElements Quality Program OpenGL Utilities
* ---------------------------------------------
*
* Copyright 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*//*!
* \file
* \brief Program interface query utilities
*//*--------------------------------------------------------------------*/
#include "gluProgramInterfaceQuery.hpp"
#include "glwFunctions.hpp"
#include "glwEnums.hpp"
#include <sstream>
namespace glu
{
uint32_t getProgramResourceUint(const glw::Functions &gl, uint32_t program, uint32_t programInterface, uint32_t index,
uint32_t queryParam)
{
uint32_t value = 0;
gl.getProgramResourceiv(program, programInterface, index, 1, &queryParam, 1, DE_NULL, (int *)&value);
GLU_EXPECT_NO_ERROR(gl.getError(), "glGetProgramResourceiv()");
return value;
}
void getProgramResourceName(const glw::Functions &gl, uint32_t program, uint32_t programInterface, uint32_t index,
std::string &dst)
{
const int length = getProgramResourceInt(gl, program, programInterface, index, GL_NAME_LENGTH);
if (length > 0)
{
std::vector<char> buf(length + 1);
gl.getProgramResourceName(program, programInterface, index, (int)buf.size(), DE_NULL, &buf[0]);
GLU_EXPECT_NO_ERROR(gl.getError(), "glGetProgramResourceName()");
dst = (const char *)&buf[0];
}
else
{
std::ostringstream msg;
msg << "Empty name returned for " << programInterface << " at index " << index;
throw tcu::TestError(msg.str());
}
}
static void getProgramInterfaceActiveVariables(const glw::Functions &gl, uint32_t program, uint32_t programInterface,
uint32_t index, std::vector<int> &activeVariables)
{
const int numActiveVariables = getProgramResourceInt(gl, program, programInterface, index, GL_NUM_ACTIVE_VARIABLES);
activeVariables.resize(numActiveVariables);
if (numActiveVariables > 0)
{
const uint32_t queryParam = GL_ACTIVE_VARIABLES;
gl.getProgramResourceiv(program, programInterface, index, 1, &queryParam, (int)activeVariables.size(), DE_NULL,
&activeVariables[0]);
GLU_EXPECT_NO_ERROR(gl.getError(), "glGetProgramResourceiv(GL_PROGRAM_ACTIVE_VARIABLES)");
}
}
void getProgramInterfaceBlockInfo(const glw::Functions &gl, uint32_t program, uint32_t programInterface, uint32_t index,
InterfaceBlockInfo &info)
{
info.index = index;
info.bufferBinding = getProgramResourceUint(gl, program, programInterface, index, GL_BUFFER_BINDING);
info.dataSize = getProgramResourceUint(gl, program, programInterface, index, GL_BUFFER_DATA_SIZE);
getProgramInterfaceActiveVariables(gl, program, programInterface, index, info.activeVariables);
if (programInterface != GL_ATOMIC_COUNTER_BUFFER)
getProgramResourceName(gl, program, programInterface, index, info.name);
}
void getProgramInterfaceVariableInfo(const glw::Functions &gl, uint32_t program, uint32_t programInterface,
uint32_t index, InterfaceVariableInfo &info)
{
// \todo [2013-08-27 pyry] Batch queries!
info.index = index;
info.blockIndex = getProgramResourceUint(gl, program, programInterface, index, GL_BLOCK_INDEX);
info.type = getProgramResourceUint(gl, program, programInterface, index, GL_TYPE);
info.arraySize = getProgramResourceUint(gl, program, programInterface, index, GL_ARRAY_SIZE);
info.offset = getProgramResourceUint(gl, program, programInterface, index, GL_OFFSET);
info.arrayStride = getProgramResourceUint(gl, program, programInterface, index, GL_ARRAY_STRIDE);
info.matrixStride = getProgramResourceUint(gl, program, programInterface, index, GL_MATRIX_STRIDE);
info.isRowMajor = getProgramResourceUint(gl, program, programInterface, index, GL_IS_ROW_MAJOR) != GL_FALSE;
if (programInterface == GL_UNIFORM)
info.atomicCounterBufferIndex =
getProgramResourceUint(gl, program, programInterface, index, GL_ATOMIC_COUNTER_BUFFER_INDEX);
if (programInterface == GL_BUFFER_VARIABLE)
{
info.topLevelArraySize = getProgramResourceUint(gl, program, programInterface, index, GL_TOP_LEVEL_ARRAY_SIZE);
info.topLevelArrayStride =
getProgramResourceUint(gl, program, programInterface, index, GL_TOP_LEVEL_ARRAY_STRIDE);
}
getProgramResourceName(gl, program, programInterface, index, info.name);
}
} // namespace glu