-#include <stdio.h>
+#include <GL/glew.h>
+#include <assert.h>
#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
-#include <assert.h>
-#include <GL/glew.h>
+#include <Eigen/Core>
-#include "util.h"
#include "init.h"
+#include "util.h"
+
+using namespace std;
-extern std::string *movit_data_directory;
+namespace movit {
+
+extern string *movit_data_directory;
void hsv2rgb(float h, float s, float v, float *r, float *g, float *b)
{
}
}
-std::string read_file(const std::string &filename)
+string read_file(const string &filename)
{
- const std::string full_pathname = *movit_data_directory + "/" + filename;
+ const string full_pathname = *movit_data_directory + "/" + filename;
static char buf[131072];
FILE *fp = fopen(full_pathname.c_str(), "r");
int len = fread(buf, 1, sizeof(buf), fp);
fclose(fp);
- return std::string(buf, len);
+ return string(buf, len);
}
-GLuint compile_shader(const std::string &shader_src, GLenum type)
+GLuint compile_shader(const string &shader_src, GLenum type)
{
GLuint obj = glCreateShader(type);
const GLchar* source[] = { shader_src.data() };
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;
printf("\n");
}
-std::string output_glsl_mat3(const std::string &name, const Eigen::Matrix3d &m)
+string output_glsl_mat3(const string &name, const Eigen::Matrix3d &m)
{
char buf[1024];
sprintf(buf,
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;
+}
+
+} // namespace movit