framework/opengl/gluProgramInterfaceQuery.cpp

   1 /*-------------------------------------------------------------------------
   2  * drawElements Quality Program OpenGL Utilities
   3  * ---------------------------------------------
   4  *
   5  * Copyright 2014 The Android Open Source Project
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  *//*!
  20  * \file
  21  * \brief Program interface query utilities
  22  *//*--------------------------------------------------------------------*/
  23
  24 #include "gluProgramInterfaceQuery.hpp"
  25 #include "glwFunctions.hpp"
  26 #include "glwEnums.hpp"
  27
  28 #include <sstream>
  29
  30 namespace glu
  31 {
  32
  33 deUint32 getProgramResourceUint (const glw::Functions& gl, deUint32 program, deUint32 programInterface, deUint32 index, deUint32 queryParam)
  34 {
  35         deUint32 value = 0;
  36         gl.getProgramResourceiv(program, programInterface, index, 1, &queryParam, 1, DE_NULL, (int*)&value);
  37         GLU_EXPECT_NO_ERROR(gl.getError(), "glGetProgramResourceiv()");
  38         return value;
  39 }
  40
  41 void getProgramResourceName (const glw::Functions& gl, deUint32 program, deUint32 programInterface, deUint32 index, std::string& dst)
  42 {
  43         const int length = getProgramResourceInt(gl, program, programInterface, index, GL_NAME_LENGTH);
  44
  45         if (length > 0)
  46         {
  47                 std::vector<char> buf(length+1);
  48                 gl.getProgramResourceName(program, programInterface, index, (int)buf.size(), DE_NULL, &buf[0]);
  49                 GLU_EXPECT_NO_ERROR(gl.getError(), "glGetProgramResourceName()");
  50
  51                 dst = (const char*)&buf[0];
  52         }
  53         else
  54         {
  55                 std::ostringstream msg;
  56                 msg << "Empty name returned for " << programInterface << " at index " << index;
  57                 throw tcu::TestError(msg.str());
  58         }
  59 }
  60
  61 static void getProgramInterfaceActiveVariables (const glw::Functions& gl, deUint32 program, deUint32 programInterface, deUint32 index, std::vector<int>& activeVariables)
  62 {
  63         const int numActiveVariables = getProgramResourceInt(gl, program, programInterface, index, GL_NUM_ACTIVE_VARIABLES);
  64
  65         activeVariables.resize(numActiveVariables);
  66         if (numActiveVariables > 0)
  67         {
  68                 const deUint32 queryParam = GL_ACTIVE_VARIABLES;
  69                 gl.getProgramResourceiv(program, programInterface, index, 1, &queryParam, (int)activeVariables.size(), DE_NULL, &activeVariables[0]);
  70                 GLU_EXPECT_NO_ERROR(gl.getError(), "glGetProgramResourceiv(GL_PROGRAM_ACTIVE_VARIABLES)");
  71         }
  72 }
  73
  74 void getProgramInterfaceBlockInfo (const glw::Functions& gl, deUint32 program, deUint32 programInterface, deUint32 index, InterfaceBlockInfo& info)
  75 {
  76         info.index                      = index;
  77         info.bufferBinding      = getProgramResourceUint(gl, program, programInterface, index, GL_BUFFER_BINDING);
  78         info.dataSize           = getProgramResourceUint(gl, program, programInterface, index, GL_BUFFER_DATA_SIZE);
  79
  80         getProgramInterfaceActiveVariables(gl, program, programInterface, index, info.activeVariables);
  81
  82         if (programInterface != GL_ATOMIC_COUNTER_BUFFER)
  83                 getProgramResourceName(gl, program, programInterface, index, info.name);
  84 }
  85
  86 void getProgramInterfaceVariableInfo (const glw::Functions& gl, deUint32 program, deUint32 programInterface, deUint32 index, InterfaceVariableInfo& info)
  87 {
  88         // \todo [2013-08-27 pyry] Batch queries!
  89         info.index                      = index;
  90         info.blockIndex         = getProgramResourceUint(gl, program, programInterface, index, GL_BLOCK_INDEX);
  91         info.type                       = getProgramResourceUint(gl, program, programInterface, index, GL_TYPE);
  92         info.arraySize          = getProgramResourceUint(gl, program, programInterface, index, GL_ARRAY_SIZE);
  93         info.offset                     = getProgramResourceUint(gl, program, programInterface, index, GL_OFFSET);
  94         info.arrayStride        = getProgramResourceUint(gl, program, programInterface, index, GL_ARRAY_STRIDE);
  95         info.matrixStride       = getProgramResourceUint(gl, program, programInterface, index, GL_MATRIX_STRIDE);
  96         info.isRowMajor         = getProgramResourceUint(gl, program, programInterface, index, GL_IS_ROW_MAJOR) != GL_FALSE;
  97
  98         if (programInterface == GL_UNIFORM)
  99                 info.atomicCounterBufferIndex = getProgramResourceUint(gl, program, programInterface, index, GL_ATOMIC_COUNTER_BUFFER_INDEX);
 100
 101         if (programInterface == GL_BUFFER_VARIABLE)
 102         {
 103                 info.topLevelArraySize          = getProgramResourceUint(gl, program, programInterface, index, GL_TOP_LEVEL_ARRAY_SIZE);
 104                 info.topLevelArrayStride        = getProgramResourceUint(gl, program, programInterface, index, GL_TOP_LEVEL_ARRAY_STRIDE);
 105         }
 106
 107         getProgramResourceName(gl, program, programInterface, index, info.name);
 108 }
 109
 110 } // glu