void Sphere::setupGLBuffers() {
if(Sphere::initialized) { // no need to resetup
return;
}
setVertexData(); // set the vertex data before using
size_t dataSize = Sphere::numVert * 4 * sizeof(GLfloat);
// vertex data
glGenBuffers(1, &Sphere::vBuffer);
glBindBuffer(GL_ARRAY_BUFFER, Sphere::vBuffer);
glBufferData(GL_ARRAY_BUFFER, dataSize, Sphere::vertexData, GL_STATIC_DRAW);
glGenBuffers(1, &Sphere::eBuffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, Sphere::eBuffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, Sphere::numVert * sizeof(GLushort), Sphere::elemData, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
// shader program
Sphere::shaderPrg = shaderSetup("Sphere.vert", "Sphere.frag");
// TODO SETUP VERTEX POSITIONAL DATA AND STUFF
Sphere::vPosition = glGetAttribLocation(Sphere::shaderPrg, "vPosition" );
Sphere::transLoc = glGetUniformLocation(Sphere::shaderPrg, "trans");
Sphere::initialized = true;
}
void
piglit_init(int argc, char **argv)
{
/* GL version must be 3.0 */
piglit_require_gl_version(30);
loadTex();
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0, piglit_width, 0, piglit_height, -1, 1);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glClearColor(0.1, 0.1, 0.1, 1.0);
shaderSetup();
}
void
piglit_init(int argc, char **argv)
{
/* Check if EXT_gpu_shader4 is supported */
if (!piglit_is_extension_supported("GL_EXT_gpu_shader4"))
/* If EXT_gpu_shader4 is not supported GL version must be 3.0 */
piglit_require_gl_version(30);
loadTex();
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0, piglit_width, 0, piglit_height, -1, 1);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glClearColor(0.1, 0.1, 0.1, 1.0);
shaderSetup();
}
/* Initializes the OpenGL environment for ray tracing.
Sets the OpenGL state variables
Sets the global vertex and element buffers for drawing
*/
void initOpenGL(void) {
// OpenGL state variables
glEnable(GL_DEPTH_TEST | GL_CULL_FACE);
glClearColor(0.0, 0.0, 0.0, 1.0);
glCullFace(GL_FRONT);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
// Simple Square for ray tracing shaders
GLushort elemData[] = {0, 1, 2, 3, 0, 2};
// x, y, z,
GLfloat vertData[] = {-1.0, 1.0, 0.0,
-1.0, -1.0, 0.0,
1.0, -1.0, 0.0,
1.0, 1.0, 0.0};
int dataSize = NUM_VERTS * 3 * sizeof(GLfloat);
glGenBuffers(1, &vBuffer);
glBindBuffer(GL_ARRAY_BUFFER, vBuffer);
glBufferData(GL_ARRAY_BUFFER, dataSize, vertData, GL_STATIC_DRAW);
glGenBuffers(1, &eBuffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, eBuffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, 6*sizeof(GLushort), elemData, GL_STATIC_DRAW);
// compile shader programs here in Resources folder
shaderProg = shaderSetup("resources/pong.vert", "resources/pong.frag");
if (!shaderProg) {
perror("ERROR Setting up default shadern");
exit(1);
}
vertPos = glGetAttribLocation(shaderProg, "currVert");
ball_glPos = glGetUniformLocation(shaderProg, "ballPos");
player_glPos = glGetUniformLocation(shaderProg, "playerPos");
comp_glPos = glGetUniformLocation(shaderProg, "compPos");
return;
}
