X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=white_balance_effect.cpp;h=69759adfc6148379698998674109a5ae17213e4b;hp=1583922461053dd1c793eaa51f93b28275b1cab5;hb=refs%2Fheads%2Fepoxy;hpb=37f56fcbe571b2322243f6de59494bf9e0cbb37a

diff --git a/white_balance_effect.cpp b/white_balance_effect.cpp
index 1583922..69759ad 100644
--- a/white_balance_effect.cpp
+++ b/white_balance_effect.cpp
@@ -1,13 +1,19 @@
 #include <Eigen/Core>
 #include <Eigen/LU>
-#include <GL/glew.h>
+#include <epoxy/gl.h>
 #include <assert.h>
 
+#include "colorspace_conversion_effect.h"
 #include "d65.h"
+#include "effect_util.h"
+#include "image_format.h"
 #include "util.h"
 #include "white_balance_effect.h"
 
 using namespace Eigen;
+using namespace std;
+
+namespace movit {
 
 namespace {
 
@@ -21,7 +27,7 @@ Vector3d convert_color_temperature_to_xyz(float T)
 	assert(T <= 15000.0f);
 
 	if (T <= 4000.0f) {
-		x = ((-0.2661239e9 * invT - 0.2343580e6) * invT + 0.8776956e3) * invT + 0.179910;
+		x = ((-0.2661239e9 * invT - 0.2343589e6) * invT + 0.8776956e3) * invT + 0.179910;
 	} else {
 		x = ((-3.0258469e9 * invT + 2.1070379e6) * invT + 0.2226347e3) * invT + 0.240390;
 	}
@@ -37,13 +43,6 @@ Vector3d convert_color_temperature_to_xyz(float T)
 	return Vector3d(x, y, 1.0 - x - y);
 }
 
-// Assuming sRGB primaries, from Wikipedia.
-const double rgb_to_xyz_matrix[9] = {
-	0.4124, 0.2126, 0.0193, 
-	0.3576, 0.7152, 0.1192,
-	0.1805, 0.0722, 0.9505,
-};
-
 /*
  * There are several different perceptual color spaces with different intended
  * uses; for instance, CIECAM02 uses one space (CAT02) for purposes of computing
@@ -108,15 +107,16 @@ WhiteBalanceEffect::WhiteBalanceEffect()
 	register_float("output_color_temperature", &output_color_temperature);
 }
 
-std::string WhiteBalanceEffect::output_fragment_shader()
+string WhiteBalanceEffect::output_fragment_shader()
 {
 	return read_file("white_balance_effect.frag");
 }
 
-void WhiteBalanceEffect::set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num)
+void WhiteBalanceEffect::set_gl_state(GLuint glsl_program_num, const string &prefix, unsigned *sampler_num)
 {
+	Matrix3d rgb_to_xyz_matrix = ColorspaceConversionEffect::get_xyz_matrix(COLORSPACE_sRGB);
 	Vector3d rgb(neutral_color.r, neutral_color.g, neutral_color.b);
-	Vector3d xyz = Map<const Matrix3d>(rgb_to_xyz_matrix) * rgb;
+	Vector3d xyz = rgb_to_xyz_matrix * rgb;
 	Vector3d lms_scale = compute_lms_scaling_factors(xyz);
 
 	/*
@@ -143,10 +143,12 @@ void WhiteBalanceEffect::set_gl_state(GLuint glsl_program_num, const std::string
 	 * has to be the opposite of the execution order.
 	 */
 	Matrix3d corr_matrix =
-		Map<const Matrix3d>(rgb_to_xyz_matrix).inverse() *
+		rgb_to_xyz_matrix.inverse() *
 		Map<const Matrix3d>(xyz_to_lms_matrix).inverse() *
 		lms_scale.asDiagonal() *
 		Map<const Matrix3d>(xyz_to_lms_matrix) *
-		Map<const Matrix3d>(rgb_to_xyz_matrix);
+		rgb_to_xyz_matrix;
 	set_uniform_mat3(glsl_program_num, prefix, "correction_matrix", corr_matrix);
 }
+
+}  // namespace movit