X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=effect_chain.cpp;h=32ee2cee4bf51e9656df649577673789cff6ac84;hp=05adfd835a5b2189e3e5da319c12dd47ac5ff45a;hb=a592c55caca0fb654bad4ec43b84c46abcee21c2;hpb=928743085b7f0f88b3e1b0e59e2d7ebec7816bd2

diff --git a/effect_chain.cpp b/effect_chain.cpp
index 05adfd8..32ee2ce 100644
--- a/effect_chain.cpp
+++ b/effect_chain.cpp
@@ -1,12 +1,19 @@
+#define GL_GLEXT_PROTOTYPES 1
+
+#include <stdio.h>
 #include <assert.h>
 
+#include <GL/gl.h>
+#include <GL/glext.h>
+
+#include "util.h"
 #include "effect_chain.h"
 #include "gamma_expansion_effect.h"
 #include "lift_gamma_gain_effect.h"
 #include "colorspace_conversion_effect.h"
 
 EffectChain::EffectChain(unsigned width, unsigned height)
-	: width(width), height(height) {}
+	: width(width), height(height), finalized(false) {}
 
 void EffectChain::add_input(const ImageFormat &format)
 {
@@ -53,7 +60,40 @@ Effect *EffectChain::add_effect(EffectId effect_id)
 		current_color_space = COLORSPACE_sRGB;
 	}
 
+	// not handled yet
+	assert(!effect->needs_many_samples());
+	assert(!effect->needs_mipmaps());
+
 	effects.push_back(effect);
 	return effect;
 }
 
+void EffectChain::finalize()
+{
+	std::string frag_shader = read_file("header.glsl");
+
+	for (unsigned i = 0; i < effects.size(); ++i) {
+		char effect_id[256];
+		sprintf(effect_id, "eff%d", i);
+	
+		frag_shader += "\n";
+		frag_shader += std::string("#define PREFIX(x) ") + effect_id + "_ ## x\n";
+		frag_shader += std::string("#define FUNCNAME ") + effect_id + "\n";
+		frag_shader += effects[i]->output_glsl();
+		frag_shader += "#undef PREFIX\n";
+		frag_shader += "#undef FUNCNAME\n";
+		frag_shader += std::string("#define LAST_INPUT ") + effect_id + "\n";
+		frag_shader += "\n";
+	}
+	printf("%s\n", frag_shader.c_str());
+	
+	glsl_program_num = glCreateProgram();
+	GLhandleARB vs_obj = compile_shader(read_file("vs.glsl"), GL_VERTEX_SHADER);
+	GLhandleARB fs_obj = compile_shader(frag_shader, GL_FRAGMENT_SHADER);
+	glAttachObjectARB(glsl_program_num, vs_obj);
+	check_error();
+	glAttachObjectARB(glsl_program_num, fs_obj);
+	check_error();
+	glLinkProgram(glsl_program_num);
+	check_error();
+}