X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=util.cpp;h=c18f00949d1e2d1bca75bd3945ac2fcbc82e6811;hp=592e4d56b47f842a6bb6493e634992bb9cfe0ec5;hb=f6c44598c9dad9ddd024c5f8f010d179a6d971fd;hpb=02d19b8323a1b626acd9d3b4f08bb63f51149cf3

diff --git a/util.cpp b/util.cpp
index 592e4d5..c18f009 100644
--- a/util.cpp
+++ b/util.cpp
@@ -1,5 +1,12 @@
-#include <math.h>
+#define GL_GLEXT_PROTOTYPES 1
+
+#include <stdio.h>
+#include <assert.h>
+
+#include <GL/gl.h>
+#include <GL/glext.h>
 
+#include <math.h>
 #include "util.h"
 
 void hsv2rgb(float h, float s, float v, float *r, float *g, float *b)
@@ -42,3 +49,42 @@ void hsv2rgb(float h, float s, float v, float *r, float *g, float *b)
 	*g += m;
 	*b += m;
 }
+
+std::string read_file(const std::string &filename)
+{
+	static char buf[131072];
+	FILE *fp = fopen(filename.c_str(), "r");
+	if (fp == NULL) {
+		perror(filename.c_str());
+		exit(1);
+	}
+
+	int len = fread(buf, 1, sizeof(buf), fp);
+	fclose(fp);
+
+	return std::string(buf, len);
+}
+
+GLhandleARB compile_shader(const std::string &shader_src, GLenum type)
+{
+	GLhandleARB obj = glCreateShaderObjectARB(type);
+	const GLchar* source[] = { shader_src.data() };
+	const GLint length[] = { shader_src.size() };
+	glShaderSource(obj, 1, source, length);
+	glCompileShader(obj);
+
+	GLchar info_log[4096];
+	GLsizei log_length = sizeof(info_log) - 1;
+	glGetShaderInfoLog(obj, log_length, &log_length, info_log);
+	info_log[log_length] = 0; 
+	printf("shader compile log: %s\n", info_log);
+
+	GLint status;
+	glGetShaderiv(obj, GL_COMPILE_STATUS, &status);
+	if (status == GL_FALSE) {
+		exit(1);
+	}
+
+	return obj;
+}
+