X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=effect.cpp;h=cab91bf51814ae435632381754486c8f72063d80;hb=f428e5f85aeda850d43c4b134fbb286b574c63fb;hp=f89b1a99c8c2350d8d5a82ddde26d701c5d373e2;hpb=e61807327b9a1f98f39dd5e1496254905f78e581;p=movit

diff --git a/effect.cpp b/effect.cpp
index f89b1a9..cab91bf 100644
--- a/effect.cpp
+++ b/effect.cpp
@@ -1,6 +1,37 @@
+#define GL_GLEXT_PROTOTYPES 1
+
+#include <stdio.h>
 #include <string.h>
 #include <assert.h>
 #include "effect.h"
+#include "util.h"
+
+#include <GL/gl.h>
+#include <GL/glext.h>
+
+void set_uniform_float(GLhandleARB glsl_program_num, const std::string &prefix, const std::string &key, float value)
+{
+	std::string name = prefix + "_" + key;
+	GLint l = glGetUniformLocation(glsl_program_num, name.c_str());
+	if (l == -1) {
+		return;
+	}
+	check_error();
+	glUniform1f(l, value);
+	check_error();
+}
+
+void set_uniform_vec3(GLhandleARB glsl_program_num, const std::string &prefix, const std::string &key, const float *values)
+{
+	std::string name = prefix + "_" + key;
+	GLint l = glGetUniformLocation(glsl_program_num, name.c_str());
+	if (l == -1) {
+		return;
+	}
+	check_error();
+	glUniform3fv(l, 1, values);
+	check_error();
+}
 
 bool Effect::set_int(const std::string &key, int value)
 {
@@ -47,3 +78,38 @@ void Effect::register_vec3(const std::string &key, float *values)
 	params_vec3[key] = values;
 }
 
+// Output convenience uniforms for each parameter.
+// These will be filled in per-frame.
+std::string Effect::output_convenience_uniforms()
+{
+	std::string output = "";
+	for (std::map<std::string, float*>::const_iterator it = params_float.begin();
+	     it != params_float.end();
+	     ++it) {
+		char buf[256];
+		sprintf(buf, "uniform float PREFIX(%s);\n", it->first.c_str());
+		output.append(buf);
+	}
+	for (std::map<std::string, float*>::const_iterator it = params_vec3.begin();
+	     it != params_vec3.end();
+	     ++it) {
+		char buf[256];
+		sprintf(buf, "uniform vec3 PREFIX(%s);\n", it->first.c_str());
+		output.append(buf);
+	}
+	return output;
+}
+
+void Effect::set_uniforms(GLhandleARB glsl_program_num, const std::string& prefix)
+{
+	for (std::map<std::string, float*>::const_iterator it = params_float.begin();
+	     it != params_float.end();
+	     ++it) {
+		set_uniform_float(glsl_program_num, prefix, it->first, *it->second);
+	}
+	for (std::map<std::string, float*>::const_iterator it = params_vec3.begin();
+	     it != params_vec3.end();
+	     ++it) {
+		set_uniform_vec3(glsl_program_num, prefix, it->first, it->second);
+	}
+}