const GLuint ATTRIBUTE_LOCATION_POSITIONS = 0; const GLuint ATTRIBUTE_LOCATION_TEXTUREUV = 1; const GLuint ATTRIBUTE_LOCATION_NORMALS = 2; // Bind shader program, uniforms and textures // ... // Bind the vertex buffer glBindBuffer( GL_ARRAY_BUFFER, vertex_buffer_object ); // Set the vertex attributes glEnableVertexAttribArray( ATTRIBUTE_LOCATION_POSITIONS ); glVertexAttribPointer( ATTRIBUTE_LOCATION_POSITIONS, 3, GL_FLOAT, GL_FALSE, 32, 0 ); glEnableVertexAttribArray( ATTRIBUTE_LOCATION_TEXTUREUV ); glVertexAttribPointer( ATTRIBUTE_LOCATION_TEXTUREUV, 2, GL_FLOAT, GL_FALSE, 32, 12 ); glEnableVertexAttribArray( ATTRIBUTE_LOCATION_NORMALS ); glVertexAttribPointer( ATTRIBUTE_LOCATION_NORMALS, 3, GL_FLOAT, GL_FALSE, 32, 20 ); // Draw elements glDrawElements( GL_TRIANGLES, count, GL_UNSIGNED_SHORT, 0 );
const GLuint ATTRIBUTE_LOCATION_POSITIONS = 0; const GLuint ATTRIBUTE_LOCATION_TEXTUREUV = 1; const GLuint ATTRIBUTE_LOCATION_NORMALS = 2; // Bind the vertex buffer object glBindBuffer( GL_ARRAY_BUFFER, vertex_buffer_object ); // Create a VAO GLuint vao; glGenVertexArrays( 1, &vao ); glBindVertexArray( vao ); // Set the vertex attributes as usual glEnableVertexAttribArray( ATTRIBUTE_LOCATION_POSITIONS ); glVertexAttribPointer( ATTRIBUTE_LOCATION_POSITIONS, 3, GL_FLOAT, GL_FALSE, 32, 0 ); glEnableVertexAttribArray( ATTRIBUTE_LOCATION_TEXTUREUV ); glVertexAttribPointer( ATTRIBUTE_LOCATION_TEXTUREUV, 2, GL_FLOAT, GL_FALSE, 32, 12 ); glEnableVertexAttribArray( ATTRIBUTE_LOCATION_NORMALS ); glVertexAttribPointer( ATTRIBUTE_LOCATION_NORMALS, 3, GL_FLOAT, GL_FALSE, 32, 20 ); // Unbind the VAO to avoid accidentally overwriting the state // Skip this if you are confident your code will not do so glBindVertexArray( 0 );
// Create a vertex array object GLuint vao; glGenVertexArrays( 1, &vao ); glBindVertexArray( vao );
// Bind shader program, uniforms and textures // ... // Bind Vertex Array Object glBindVertexArray( vao ); // Draw elements glDrawElements( GL_TRIANGLES, count, GL_UNSIGNED_SHORT, 0 );
