void
VertexArrayDrawingRequest::draw(int start, int end)
{
assert(!vertices.empty());
assert(texcoords.empty() || int(texcoords.size()/2) == num_vertices());
assert(colors.empty() || int(colors.size()/4) == num_vertices());
OpenGLState state;
glClear(GL_DEPTH_BUFFER_BIT);
state.disable(GL_DEPTH_TEST);
state.enable(GL_BLEND);
state.set_blend_func(blend_sfactor, blend_dfactor);
if (texture)
{
state.bind_texture(texture);
}
if (!colors.empty())
{
state.enable_client_state(GL_COLOR_ARRAY);
glColorPointer(4, GL_UNSIGNED_BYTE, 0, &*colors.begin());
}
else
{
state.disable_client_state(GL_COLOR_ARRAY);
state.color(Color(1.0f, 1.0f, 1.0f));
}
if (!texcoords.empty())
{
state.enable_client_state(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 0, &*texcoords.begin());
}
else
{
state.disable_client_state(GL_TEXTURE_COORD_ARRAY);
}
// FIXME: Might be worth to not use VertexArrays when we have a pretty small number of vertices
state.disable_client_state(GL_NORMAL_ARRAY);
state.enable_client_state(GL_VERTEX_ARRAY);
glVertexPointer (3, GL_FLOAT, 0, &*vertices.begin());
state.activate();
glPushMatrix();
glMultMatrixf(modelview.matrix);
glDrawArrays(mode, start, end);
glPopMatrix();
}
void render(unsigned int mask)
{
#if 0
Display::push_framebuffer(framebuffer);
glClear(GL_COLOR_BUFFER_BIT);
draw_particles();
Display::pop_framebuffer();
if (1) {
OpenGLState state;
glUseProgram(shader_program.get_handle());
shader_program.set_uniform1i("screen", 0);
shader_program.set_uniform1i("particles", 1);
state.bind_texture(tmp_texture, 0);
state.bind_texture(framebuffer.get_texture(), 1);
state.color(Color(1.0f, 1.0f, 1.0f, 1.0f));
state.activate();
glBegin(GL_QUADS);
glTexCoord2f(0,0);
glVertex2f(0,0);
glTexCoord2f(800,0);
glVertex2f(800,0);
glTexCoord2f(800,600);
glVertex2f(800, 600);
glTexCoord2f(0, 600);
glVertex2f(0,600);
glEnd();
glUseProgram(0);
}
#endif
}
