3D graphics eBook - Course Materials Repository

Vertex Buffer Object 229
}
fread(buf, length, 1, fptr); /* Read the contents of the file in to
the buffer */
fclose(fptr); /* Close the file */
buf[length] = 0; /* Null terminator */
return buf; /* Return the buffer */
Vertex Shader:
/*----------------- "exampleVertexShader.vert" -----------------*/
#version 150 // Specify which version of GLSL we are using.
// in_Position was bound to attribute index 0("shaderAtribute")
in vec3 in_Position;
void main(void)
{
1.0);
}
gl_Position = vec4(in_Position.x, in_Position.y, in_Position.z,
/*--------------------------------------------------------------*/
Fragment Shader:
/*---------------- "exampleFragmentShader.frag" ----------------*/
#version 150 // Specify which version of GLSL we are using.
precision highp float; // Video card drivers require this next line to
function properly
out vec4 fragColor;
void main(void)
{
WHITE
}
fragColor = vec4(1.0,1.0,1.0,1.0); //Set colour of each vertex to
/*--------------------------------------------------------------*/
Main OpenGL Program:
/*--------------------- Main OpenGL Program ---------------------*/
/* Create a variable to hold the VBO identifier */
GLuint triangleVBO;
/* This is a handle to the shader program */