void Renderer::init(GLSLProgram & shader)
{
setProjectionMatrix(30,1, 1, -100, projection);
shader.use();
shader.setUniformMatrix4fv("projectionMatrix", projection);
shader.unuse();
}
void draw() {
glClearDepth(1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glGenBuffers(1, &_vboID);
float vertexData[12];
float height = 1.0f;
float width = 1.0f;
float x = -1.0f;
float y = -1.0f;
//First Triangle
vertexData[0] = x + width;
vertexData[1] = y + height;
vertexData[2] = x;
vertexData[3] = y + height;
vertexData[4] = x;
vertexData[5] = y;
//Second Triangle
vertexData[6] = x;
vertexData[7] = y;
vertexData[8] = x + width;
vertexData[9] = y;
vertexData[10] = x + width;
vertexData[11] = y + height;
_Program.use();
glBindBuffer(GL_ARRAY_BUFFER, _vboID);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertexData), vertexData, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
glDrawArrays(GL_TRIANGLES, 0, 6);
glDisableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
_Program.unuse();
SDL_GL_SwapWindow(_window);
}
