+++ /dev/null
-#include <cmath>
-#include "color.h"
-#include "colorcurve.h"
-#include "mesh.h"
-#include "shader.h"
-#include "texture2d.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-ColorCurve::ColorCurve():
- shprog("colorcurve.glsl"),
- quad(get_fullscreen_quad())
-{
- shdata.uniform("source", 0);
- shdata.uniform("curve", 1);
-
- curve.storage(LUMINANCE, 256);
- curve.set_min_filter(LINEAR);
- curve.set_wrap(CLAMP_TO_EDGE);
-
- set_peak(0.2);
- set_brightness(1.5);
- set_linear();
-}
-
-void ColorCurve::set_peak(float p)
-{
- if(p<0 || p>1)
- throw invalid_argument("ColorCurve::set_peak");
- shdata.uniform("peak", p);
-}
-
-void ColorCurve::set_brightness(float b)
-{
- if(b<1)
- throw invalid_argument("ColorCurve::set_brightness");
- shdata.uniform("brightness", b);
-}
-
-void ColorCurve::set_gamma(float g)
-{
- if(g<0.1 || g>10)
- throw invalid_argument("ColorCurve::set_gamma");
-
- unsigned char curve_data[256];
- for(unsigned i=0; i<256; ++i)
- curve_data[i] = pow(i/255.0f, 1/g)*255+0.5f;
- curve.image(0, LUMINANCE, UNSIGNED_BYTE, curve_data);
-}
-
-void ColorCurve::set_srgb()
-{
- unsigned char curve_data[256];
- curve_data[0] = 0;
- for(unsigned i=1; i<256; ++i)
- curve_data[i] = to_srgb(i/255.0f)*255+0.5f;
- curve.image(0, LUMINANCE, UNSIGNED_BYTE, curve_data);
-}
-
-void ColorCurve::set_linear()
-{
- unsigned char curve_data[256];
- for(unsigned i=0; i<256; ++i)
- curve_data[i] = i;
- curve.image(0, LUMINANCE, UNSIGNED_BYTE, curve_data);
-}
-
-void ColorCurve::render(const Texture2D &color_buf, const Texture2D &)
-{
- Bind _bind_shader(shprog);
- shdata.apply();
- Bind _bind_mesh(quad);
- Bind _bind_tex(color_buf);
- Bind _bind_curve(curve, 1);
- quad.draw();
-}
-
-} // namespace GL
-} // namespace Msp