PostProcessingShaderBaseImplementation.cpp

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#include <string>
 
#include <tdme/tdme.h>
#include <tdme/engine/subsystems/postprocessing/PostProcessingShaderBaseImplementation.h>
#include <tdme/engine/subsystems/renderer/Renderer.h>
#include <tdme/engine/Engine.h>
 
using tdme::engine::subsystems::postprocessing::PostProcessingShaderBaseImplementation;
using tdme::engine::subsystems::renderer::Renderer;
using tdme::engine::Engine;
 
PostProcessingShaderBaseImplementation::PostProcessingShaderBaseImplementation(Renderer* renderer)
{
    this->renderer = renderer;
    isRunning = false;
    initialized = false;
}
 
bool PostProcessingShaderBaseImplementation::isInitialized()
{
    return initialized;
}
 
void PostProcessingShaderBaseImplementation::initialize()
{
    // map inputs to attributes
    if (renderer->isUsingProgramAttributeLocation() == true) {
        renderer->setProgramAttributeLocation(programId, 0, "inVertex");
        renderer->setProgramAttributeLocation(programId, 2, "inTextureUV");
    }
 
    if (renderer->linkProgram(programId) == false)
        return;
 
    // uniforms
    uniformColorBufferTextureUnit = renderer->getProgramUniformLocation(programId, "colorBufferTextureUnit");
    uniformDepthBufferTextureUnit = renderer->getProgramUniformLocation(programId, "depthBufferTextureUnit");
    uniformTemporaryColorBufferTextureUnit = renderer->getProgramUniformLocation(programId, "temporaryColorBufferTextureUnit");
    uniformTemporaryDepthBufferTextureUnit = renderer->getProgramUniformLocation(programId, "temporaryDepthBufferTextureUnit");
    uniformBufferTexturePixelWidth = renderer->getProgramUniformLocation(programId, "bufferTexturePixelWidth");
    uniformBufferTexturePixelHeight = renderer->getProgramUniformLocation(programId, "bufferTexturePixelHeight");
 
    //
    initialized = true;
}
 
void PostProcessingShaderBaseImplementation::useProgram(int contextIdx)
{
    isRunning = true;
    renderer->useProgram(contextIdx, programId);
    renderer->setLighting(contextIdx, renderer->LIGHTING_NONE);
    if (uniformColorBufferTextureUnit != -1) renderer->setProgramUniformInteger(contextIdx, uniformColorBufferTextureUnit, 0);
    if (uniformDepthBufferTextureUnit != -1) renderer->setProgramUniformInteger(contextIdx, uniformDepthBufferTextureUnit, 1);
    if (uniformTemporaryColorBufferTextureUnit != -1) renderer->setProgramUniformInteger(contextIdx, uniformTemporaryColorBufferTextureUnit, 2);
    if (uniformTemporaryDepthBufferTextureUnit != -1) renderer->setProgramUniformInteger(contextIdx, uniformTemporaryDepthBufferTextureUnit, 3);
}
 
void PostProcessingShaderBaseImplementation::unUseProgram()
{
    isRunning = false;
}
 
void PostProcessingShaderBaseImplementation::setBufferPixelWidth(int contextIdx, float pixelWidth) {
    if (uniformBufferTexturePixelWidth != -1) {
        renderer->setProgramUniformFloat(contextIdx, uniformBufferTexturePixelWidth, pixelWidth);
    }
}
 
void PostProcessingShaderBaseImplementation::setBufferPixelHeight(int contextIdx, float pixelHeight) {
    if (uniformBufferTexturePixelHeight != -1) {
        renderer->setProgramUniformFloat(contextIdx, uniformBufferTexturePixelHeight, pixelHeight);
    }
}