-#include <GL/glew.h>
+#include <epoxy/gl.h>
#include <assert.h>
#include <math.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
#include <Eigen/Core>
#include "init.h"
#include "util.h"
+#if defined(__DARWIN__)
+#include <OpenGL/OpenGL.h>
+#elif defined(WIN32)
+#include <epoxy/wgl.h>
+#else
+#include <epoxy/glx.h>
+#endif
+
using namespace std;
+namespace movit {
+
extern string *movit_data_directory;
void hsv2rgb(float h, float s, float v, float *r, float *g, float *b)
glGetShaderInfoLog(obj, log_length, &log_length, info_log);
info_log[log_length] = 0;
if (strlen(info_log) > 0) {
- printf("shader compile log: %s\n", info_log);
+ fprintf(stderr, "Shader compile log: %s\n", info_log);
}
GLint status;
assert(*offset >= 0.0f);
assert(*offset <= 1.0f);
}
+
+GLuint fill_vertex_attribute(GLuint glsl_program_num, const string &attribute_name, GLint size, GLenum type, GLsizeiptr data_size, const GLvoid *data)
+{
+ int attrib = glGetAttribLocation(glsl_program_num, attribute_name.c_str());
+ if (attrib == -1) {
+ return -1;
+ }
+
+ GLuint vbo;
+ glGenBuffers(1, &vbo);
+ check_error();
+ glBindBuffer(GL_ARRAY_BUFFER, vbo);
+ check_error();
+ glBufferData(GL_ARRAY_BUFFER, data_size, data, GL_STATIC_DRAW);
+ check_error();
+ glEnableVertexAttribArray(attrib);
+ check_error();
+ glVertexAttribPointer(attrib, size, type, GL_FALSE, 0, BUFFER_OFFSET(0));
+ check_error();
+ glBindBuffer(GL_ARRAY_BUFFER, 0);
+ check_error();
+
+ return vbo;
+}
+
+void cleanup_vertex_attribute(GLuint glsl_program_num, const string &attribute_name, GLuint vbo)
+{
+ int attrib = glGetAttribLocation(glsl_program_num, attribute_name.c_str());
+ if (attrib == -1) {
+ return;
+ }
+
+ glDisableVertexAttribArray(attrib);
+ check_error();
+ glDeleteBuffers(1, &vbo);
+ check_error();
+}
+
+unsigned div_round_up(unsigned a, unsigned b)
+{
+ return (a + b - 1) / b;
+}
+
+// Algorithm from http://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2.
+unsigned next_power_of_two(unsigned v)
+{
+ v--;
+ v |= v >> 1;
+ v |= v >> 2;
+ v |= v >> 4;
+ v |= v >> 8;
+ v |= v >> 16;
+ v++;
+ return v;
+}
+
+void *get_gl_context_identifier()
+{
+#if defined(__DARWIN__)
+ return (void *)CGLGetCurrentContext();
+#elif defined(WIN32)
+ return (void *)wglGetCurrentContext();
+#else
+ return (void *)glXGetCurrentContext();
+#endif
+}
+
+} // namespace movit