static void
xa_yuv_fs_constants(struct xa_context *r, const float conversion_matrix[])
{
const int param_bytes = 12 * sizeof(float);
renderer_set_constants(r, PIPE_SHADER_FRAGMENT,
conversion_matrix, param_bytes);
}
/* Set up framebuffer, viewport and vertex shader constant buffer
* state for a particular destinaton surface. In all our rendering,
* these concepts are linked.
*/
void
renderer_bind_destination(struct xa_context *r,
struct pipe_surface *surface)
{
int width = surface->width;
int height = surface->height;
struct pipe_framebuffer_state fb;
struct pipe_viewport_state viewport;
xa_scissor_reset(r);
/* Framebuffer uses actual surface width/height
*/
memset(&fb, 0, sizeof fb);
fb.width = surface->width;
fb.height = surface->height;
fb.nr_cbufs = 1;
fb.cbufs[0] = surface;
fb.zsbuf = 0;
/* Viewport just touches the bit we're interested in:
*/
viewport.scale[0] = width / 2.f;
viewport.scale[1] = height / 2.f;
viewport.scale[2] = 1.0;
viewport.scale[3] = 1.0;
viewport.translate[0] = width / 2.f;
viewport.translate[1] = height / 2.f;
viewport.translate[2] = 0.0;
viewport.translate[3] = 0.0;
/* Constant buffer set up to match viewport dimensions:
*/
if (r->fb_width != width || r->fb_height != height) {
float vs_consts[8] = {
2.f / width, 2.f / height, 1, 1,
-1, -1, 0, 0
};
r->fb_width = width;
r->fb_height = height;
renderer_set_constants(r, PIPE_SHADER_VERTEX,
vs_consts, sizeof vs_consts);
}
cso_set_framebuffer(r->cso, &fb);
cso_set_viewport(r->cso, &viewport);
}
