GLuint LoadShader ( GLenum type, const char *shaderSrc )
{
GLuint shader;
GLint compiled;
// Create the shader object
shader = glCreateShader ( type );
if ( shader == 0 )
return 0;
// Load the shader source
glShaderSource ( shader, 1, &shaderSrc, NULL );
// Compile the shader
glCompileShader ( shader );
// Check the compile status
glGetShaderiv ( shader, GL_COMPILE_STATUS, &compiled );
if ( !compiled )
{
GLint infoLen = 0;
glGetShaderiv ( shader, GL_INFO_LOG_LENGTH, &infoLen );
if ( infoLen > 1 )
{
char* infoLog = (char* )malloc (sizeof(char) * infoLen );
glGetShaderInfoLog ( shader, infoLen, NULL, infoLog );
printf ( "Error compiling shader:\n%s\n", infoLog );
free ( infoLog );
}
glDeleteShader ( shader );
return 0;
}
return shader;
}
void TestDraw()
{
GLfloat vVertices[] = { 0.0f, 0.5f, 0.0f,
-0.5f, -0.5f, 0.0f,
0.5f, -0.5f, 0.0f };
// Set the viewport
glViewport ( 0, 0, 670, 720 );
// Clear the color buffer
glClear ( GL_COLOR_BUFFER_BIT );
// Use the program object
glUseProgram (programObject );
// Load the vertex data
glVertexAttribPointer ( 0, 3, GL_FLOAT, GL_FALSE, 0, vVertices );
glEnableVertexAttribArray ( 0 );
glDrawArrays ( GL_TRIANGLES, 0, 3 );
}
GLuint LoadShader ( GLenum type, const char *shaderSrc )
{
GLuint shader;
GLint compiled;
// Create the shader object
shader = glCreateShader ( type );
if ( shader == 0 )
return 0;
// Load the shader source
glShaderSource ( shader, 1, &shaderSrc, NULL );
// Compile the shader
glCompileShader ( shader );
// Check the compile status
glGetShaderiv ( shader, GL_COMPILE_STATUS, &compiled );
if ( !compiled )
{
GLint infoLen = 0;
glGetShaderiv ( shader, GL_INFO_LOG_LENGTH, &infoLen );
if ( infoLen > 1 )
{
char* infoLog = (char* )malloc (sizeof(char) * infoLen );
glGetShaderInfoLog ( shader, infoLen, NULL, infoLog );
printf ( "Error compiling shader:\n%s\n", infoLog );
free ( infoLog );
}
glDeleteShader ( shader );
return 0;
}
return shader;
}
void TestDraw()
{
GLfloat vVertices[] = { 0.0f, 0.5f, 0.0f,
-0.5f, -0.5f, 0.0f,
0.5f, -0.5f, 0.0f };
// Set the viewport
glViewport ( 0, 0, 670, 720 );
// Clear the color buffer
glClear ( GL_COLOR_BUFFER_BIT );
// Use the program object
glUseProgram (programObject );
// Load the vertex data
glVertexAttribPointer ( 0, 3, GL_FLOAT, GL_FALSE, 0, vVertices );
glEnableVertexAttribArray ( 0 );
glDrawArrays ( GL_TRIANGLES, 0, 3 );
}
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