+#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)
{
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);
+ }
+}