X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=gamma_expansion_effect.h;h=429bd25c4f8cf55de6fa9e907e9be1abdf2db4c2;hp=e4a94b379c3960bacb3612db1742b3156c56b763;hb=8e9f58fec54a4c879035b214fd7411f6ff7b3a32;hpb=3bb4d84f2c3914ac815b1c3fbcdea0439aa30d74

diff --git a/gamma_expansion_effect.h b/gamma_expansion_effect.h
index e4a94b3..429bd25 100644
--- a/gamma_expansion_effect.h
+++ b/gamma_expansion_effect.h
@@ -6,13 +6,16 @@
 // of the processing chain.
 //
 // Currently supports sRGB, Rec. 601/709 and Rec. 2020 (10- and 12-bit).
+// Note that Movit's internal formats generally do not have enough accuracy
+// for 12-bit input or output.
 
+#include <epoxy/gl.h>
 #include <string>
 
 #include "effect.h"
 #include "image_format.h"
 
-#define EXPANSION_CURVE_SIZE 256
+namespace movit {
 
 class GammaExpansionEffect : public Effect {
 private:
@@ -23,9 +26,11 @@ private:
 public:
 	virtual std::string effect_type_id() const { return "GammaExpansionEffect"; }
 	std::string output_fragment_shader();
+	virtual void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
 
 	virtual bool needs_linear_light() const { return false; }
 	virtual bool needs_srgb_primaries() const { return false; }
+	virtual bool one_to_one_sampling() const { return true; }
 
 	// Actually processes its input in a nonlinear fashion,
 	// but does not touch alpha, and we are a special case anyway.
@@ -33,7 +38,9 @@ public:
 
 private:
 	GammaCurve source_curve;
-	float expansion_curve[EXPANSION_CURVE_SIZE];
+	float uniform_linear_scale, uniform_c[5], uniform_beta;
 };
 
+}  // namespace movit
+
 #endif // !defined(_MOVIT_GAMMA_EXPANSION_EFFECT_H)