vimix/ImageProcessingShader.cpp

#include "defines.h"
#include "Visitor.h"
#include "Log.h"
#include "ImageProcessingShader.h"

ShadingProgram imageProcessingShadingProgram("shaders/image.vs", "shaders/imageprocessing.fs");

ImageProcessingShader::ImageProcessingShader()
{
    program_ = &imageProcessingShadingProgram;
    reset();
}

void ImageProcessingShader::use()
{
    Shader::use();

    program_->setUniform("iChannelResolution[0]", iChannelResolution[0].x, iChannelResolution[0].y, iChannelResolution[0].z);
    program_->setUniform("iChannelResolution[1]", iChannelResolution[1].x, iChannelResolution[1].y, iChannelResolution[1].z);

    program_->setUniform("brightness", brightness);
    program_->setUniform("contrast", contrast);
    program_->setUniform("saturation", saturation);
    program_->setUniform("hueshift", hueshift);

    program_->setUniform("threshold", threshold);
    program_->setUniform("lumakey", lumakey);
    program_->setUniform("nbColors", nbColors);
    program_->setUniform("invert", invert);
    program_->setUniform("filter", filter);

    program_->setUniform("gamma", gamma);
    program_->setUniform("levels", levels);
    program_->setUniform("chromakey", chromakey);
    program_->setUniform("chromadelta", chromadelta);

}


void ImageProcessingShader::reset()
{
    Shader::reset();

    // no texture resolution yet
    iChannelResolution[0] = glm::vec3(1.f);
    iChannelResolution[1] = glm::vec3(1.f);

    // default values for image processing
    brightness = 0.f;
    contrast = 0.f;
    saturation = 0.f;
    hueshift = 0.f;
    threshold = 0.f;
    lumakey = 0.f;
    nbColors = 0;
    invert = 0;
    filter = 0;
    gamma = glm::vec4(1.f, 1.f, 1.f, 1.f);
    levels = glm::vec4(0.f, 1.f, 0.f, 1.f);
    chromakey = glm::vec4(0.f, 1.f, 0.f, 0.f);
    chromadelta = 0.f;

}

void ImageProcessingShader::accept(Visitor& v) {
    Shader::accept(v);
    v.visit(*this);
}