void App::render(GraphicContext &gc)
{
gc.clear(Colorf(0.0f, 0.0f, 0.0f, 1.0f));
Rect viewport_rect(0, 0, Size(gc.get_width(), gc.get_height()));
gc.set_viewport(viewport_rect);
gc.clear_depth(1.0f);
Mat4f modelview_matrix = scene.gs->camera_modelview;
scene.Draw(modelview_matrix, gc);
gc.reset_program_object();
}
void HSV::render_texture(Canvas &canvas, ProgramObject &program, Texture &texture, float hue_offset)
{
GraphicContext gc = canvas.get_gc();
Rectf rect(0.0f, 0.0f, (float)gc.get_width(), (float)gc.get_height());
Rectf texture_unit1_coords(0.0f, 0.0f, 1.0f, 1.0f);
Vec2f positions[6] =
{
Vec2f(rect.left, rect.top),
Vec2f(rect.right, rect.top),
Vec2f(rect.left, rect.bottom),
Vec2f(rect.right, rect.top),
Vec2f(rect.left, rect.bottom),
Vec2f(rect.right, rect.bottom)
};
Vec2f tex1_coords[6] =
{
Vec2f(texture_unit1_coords.left, texture_unit1_coords.top),
Vec2f(texture_unit1_coords.right, texture_unit1_coords.top),
Vec2f(texture_unit1_coords.left, texture_unit1_coords.bottom),
Vec2f(texture_unit1_coords.right, texture_unit1_coords.top),
Vec2f(texture_unit1_coords.left, texture_unit1_coords.bottom),
Vec2f(texture_unit1_coords.right, texture_unit1_coords.bottom)
};
PrimitivesArray primarray(gc);
VertexArrayVector<Vec2f> gpu_positions = VertexArrayVector<Vec2f>(gc, positions, 6);
VertexArrayVector<Vec2f> gpu_tex1_coords = VertexArrayVector<Vec2f>(gc, tex1_coords, 6);
primarray.set_attributes(0, gpu_positions);
primarray.set_attributes(1, gpu_tex1_coords);
ProgramUniforms buffer;
buffer.cl_ModelViewProjectionMatrix = canvas.get_projection() * canvas.get_modelview();
buffer.HueOffset0 = hue_offset;
UniformVector<ProgramUniforms> uniform_vector(gc, &buffer, 1);
gc.set_uniform_buffer(0, uniform_vector);
gc.set_texture(0, texture);
gc.set_program_object(program);
gc.draw_primitives(type_triangles, 6, primarray);
gc.reset_program_object();
gc.reset_texture(0);
}
void App::calculate_matricies(GraphicContext &gc)
{
scene.gs->camera_projection = Mat4f::perspective(45.0f, ((float) gc.get_width()) / ((float) gc.get_height()), 0.1f, 1000.0f, handed_left, clip_negative_positive_w);
float ortho_size = 60.0f / 2.0f;
scene.gs->light_projection = Mat4f::ortho(-ortho_size, ortho_size, -ortho_size, ortho_size, 0.1f, 1000.0f, handed_left, clip_negative_positive_w);
scene.gs->camera_modelview = Mat4f::identity();
camera->GetWorldMatrix(scene.gs->camera_modelview);
scene.gs->camera_modelview.inverse();
scene.gs->light_modelview = Mat4f::identity();
light_distant->GetWorldMatrix(scene.gs->light_modelview);
scene.gs->light_modelview.inverse();
}
