ShadowMapCreationShaderBaseImplementation.cpp

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    #include <tdme/engine/subsystems/shadowmapping/ShadowMapCreationShaderBaseImplementation.h>
 
#include <tdme/tdme.h>
#include <tdme/engine/subsystems/lighting/LightingShader.h>
#include <tdme/engine/subsystems/lighting/LightingShaderConstants.h>
#include <tdme/engine/subsystems/renderer/Renderer.h>
#include <tdme/engine/Engine.h>
#include <tdme/engine/Timing.h>
#include <tdme/math/Matrix4x4.h>
#include <tdme/os/filesystem/FileSystem.h>
#include <tdme/os/filesystem/FileSystemInterface.h>
#include <tdme/utilities/Console.h>
 
using tdme::engine::subsystems::lighting::LightingShader;
using tdme::engine::subsystems::lighting::LightingShaderConstants;
using tdme::engine::subsystems::renderer::Renderer;
using tdme::engine::subsystems::shadowmapping::ShadowMapCreationShaderBaseImplementation;
using tdme::engine::Engine;
using tdme::engine::Timing;
using tdme::math::Matrix4x4;
using tdme::os::filesystem::FileSystem;
using tdme::os::filesystem::FileSystemInterface;
using tdme::utilities::Console;
 
ShadowMapCreationShaderBaseImplementation::ShadowMapCreationShaderBaseImplementation(Renderer* renderer)
{
    this->renderer = renderer;
    initialized = false;
}
 
ShadowMapCreationShaderBaseImplementation::~ShadowMapCreationShaderBaseImplementation() {
}
 
bool ShadowMapCreationShaderBaseImplementation::isInitialized()
{
    return initialized;
}
 
void ShadowMapCreationShaderBaseImplementation::initialize()
{
    // map inputs to attributes
    if (renderer->isUsingProgramAttributeLocation() == true) {
        renderer->setProgramAttributeLocation(programId, 0, "inVertex");
        renderer->setProgramAttributeLocation(programId, 2, "inTextureUV");
        renderer->setProgramAttributeLocation(programId, 4, "inOrigin");
    }
    // link
    if (renderer->linkProgram(programId) == false) return;
 
    // uniforms
    if (renderer->isInstancedRenderingAvailable() == true) {
        //  uniforms
        uniformProjectionMatrix = renderer->getProgramUniformLocation(programId, "projectionMatrix");
        if (uniformProjectionMatrix == -1) return;
        uniformCameraMatrix = renderer->getProgramUniformLocation(programId, "cameraMatrix");
        if (uniformCameraMatrix == -1) return;
    } else {
        //  uniforms
        uniformMVPMatrix = renderer->getProgramUniformLocation(programId, "mvpMatrix");
        if (uniformMVPMatrix == -1) return;
        uniformModelTranslation = renderer->getProgramUniformLocation(programId, "modelTranslation");
    }
    uniformTextureMatrix = renderer->getProgramUniformLocation(programId, "textureMatrix");
    if (uniformTextureMatrix == -1) return;
    uniformTextureAtlasSize = renderer->getProgramUniformLocation(programId, "textureAtlasSize");
    if (uniformTextureAtlasSize == -1) return;
    uniformTextureAtlasPixelDimension = renderer->getProgramUniformLocation(programId, "textureAtlasPixelDimension");
    if (uniformTextureAtlasPixelDimension == -1) return;
    uniformDiffuseTextureUnit = renderer->getProgramUniformLocation(programId, "diffuseTextureUnit");
    if (uniformDiffuseTextureUnit == -1) return;
    uniformDiffuseTextureAvailable = renderer->getProgramUniformLocation(programId, "diffuseTextureAvailable");
    if (uniformDiffuseTextureAvailable == -1) return;
    uniformDiffuseTextureMaskedTransparency = renderer->getProgramUniformLocation(programId, "diffuseTextureMaskedTransparency");
    if (uniformDiffuseTextureMaskedTransparency == -1) return;
    uniformDiffuseTextureMaskedTransparencyThreshold = renderer->getProgramUniformLocation(programId, "diffuseTextureMaskedTransparencyThreshold");
    if (uniformDiffuseTextureMaskedTransparencyThreshold == -1) return;
 
    //
    uniformTime = renderer->getProgramUniformLocation(programId, "time");
 
    //
    initialized = true;
}
 
void ShadowMapCreationShaderBaseImplementation::useProgram(Engine* engine, int contextIdx)
{
    renderer->useProgram(contextIdx, programId);
    renderer->setLighting(contextIdx, renderer->LIGHTING_SPECULAR);
    renderer->setProgramUniformInteger(contextIdx, uniformDiffuseTextureUnit, LightingShaderConstants::SPECULAR_TEXTUREUNIT_DIFFUSE);
    if (uniformTime != -1) renderer->setProgramUniformFloat(contextIdx, uniformTime, static_cast<float>(engine->getTiming()->getTotalTime()) / 1000.0f);
}
 
void ShadowMapCreationShaderBaseImplementation::unUseProgram(int contextIdx)
{
}
 
void ShadowMapCreationShaderBaseImplementation::updateMatrices(int contextIdx)
{
    if (renderer->isInstancedRenderingAvailable() == true) {
        renderer->setProgramUniformFloatMatrix4x4(contextIdx, uniformProjectionMatrix, renderer->getProjectionMatrix().getArray());
        renderer->setProgramUniformFloatMatrix4x4(contextIdx, uniformCameraMatrix, renderer->getCameraMatrix().getArray());
    } else {
        Matrix4x4 mvpMatrix;
        Vector3 modelTranslation;
        // model view projection matrix
        mvpMatrix.set(renderer->getModelViewMatrix()).multiply(renderer->getCameraMatrix()).multiply(renderer->getProjectionMatrix());
        // model translation
        renderer->getModelViewMatrix().getTranslation(modelTranslation);
        renderer->setProgramUniformFloatMatrix4x4(contextIdx, uniformMVPMatrix, mvpMatrix.getArray());
        if (uniformModelTranslation != -1) renderer->setProgramUniformFloatVec3(contextIdx, uniformModelTranslation, modelTranslation.getArray());
    }
}
 
void ShadowMapCreationShaderBaseImplementation::updateTextureMatrix(Renderer* renderer, int contextIdx) {
    renderer->setProgramUniformFloatMatrix3x3(contextIdx, uniformTextureMatrix, renderer->getTextureMatrix(contextIdx).getArray());
}
 
void ShadowMapCreationShaderBaseImplementation::updateMaterial(Renderer* renderer, int contextIdx)
{
    auto material = renderer->getSpecularMaterial(contextIdx);
    renderer->setProgramUniformInteger(contextIdx, uniformDiffuseTextureMaskedTransparency, material.diffuseTextureMaskedTransparency);
    renderer->setProgramUniformFloat(contextIdx, uniformDiffuseTextureMaskedTransparencyThreshold, material.diffuseTextureMaskedTransparencyThreshold);
    renderer->setProgramUniformInteger(contextIdx, uniformTextureAtlasSize, material.textureAtlasSize);
    renderer->setProgramUniformFloatVec2(contextIdx, uniformTextureAtlasPixelDimension, material.textureAtlasPixelDimension);
}
 
void ShadowMapCreationShaderBaseImplementation::bindTexture(Renderer* renderer, int contextIdx, int32_t textureId)
{
    switch (renderer->getTextureUnit(contextIdx)) {
        case LightingShaderConstants::SPECULAR_TEXTUREUNIT_DIFFUSE:
            renderer->setProgramUniformInteger(contextIdx, uniformDiffuseTextureAvailable, textureId == 0 ? 0 : 1);
            break;
    }
}