/**
* Helper function to set the fragment shaders.
*/
static inline void
set_fragment_shader(struct blit_state *ctx, uint writemask,
enum pipe_format format,
enum pipe_texture_target pipe_tex)
{
enum tgsi_return_type stype;
unsigned idx;
if (util_format_is_pure_uint(format)) {
stype = TGSI_RETURN_TYPE_UINT;
idx = 0;
} else if (util_format_is_pure_sint(format)) {
stype = TGSI_RETURN_TYPE_SINT;
idx = 1;
} else {
stype = TGSI_RETURN_TYPE_FLOAT;
idx = 2;
}
if (!ctx->fs[pipe_tex][writemask][idx]) {
unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(pipe_tex, 0);
/* OpenGL does not allow blits from signed to unsigned integer
* or vice versa. */
ctx->fs[pipe_tex][writemask][idx] =
util_make_fragment_tex_shader_writemask(ctx->pipe, tgsi_tex,
TGSI_INTERPOLATE_LINEAR,
writemask,
stype, stype);
}
cso_set_fragment_shader_handle(ctx->cso, ctx->fs[pipe_tex][writemask][idx]);
}
/**
* Make a simple fragment shader that sets the output color to a color
* taken from a texture.
* \param tex_target one of PIPE_TEXTURE_x
*/
void *
util_make_fragment_tex_shader(struct pipe_context *pipe, unsigned tex_target,
unsigned interp_mode)
{
return util_make_fragment_tex_shader_writemask( pipe,
tex_target,
interp_mode,
TGSI_WRITEMASK_XYZW );
}
/**
* Helper function to set the fragment shaders.
*/
static INLINE void
set_fragment_shader(struct blit_state *ctx, uint writemask,
enum pipe_texture_target pipe_tex)
{
if (!ctx->fs[pipe_tex][writemask]) {
unsigned tgsi_tex = util_pipe_tex_to_tgsi_tex(pipe_tex, 0);
ctx->fs[pipe_tex][writemask] =
util_make_fragment_tex_shader_writemask(ctx->pipe, tgsi_tex,
TGSI_INTERPOLATE_LINEAR,
writemask);
}
cso_set_fragment_shader_handle(ctx->cso, ctx->fs[pipe_tex][writemask]);
}
/**
* Make a simple fragment shader that sets the output color to a color
* taken from a texture.
* \param tex_target one of PIPE_TEXTURE_x
*/
void *
util_make_fragment_tex_shader(struct pipe_context *pipe, unsigned tex_target,
unsigned interp_mode,
enum tgsi_return_type stype,
enum tgsi_return_type dtype,
bool load_level_zero,
bool use_txf)
{
return util_make_fragment_tex_shader_writemask( pipe,
tex_target,
interp_mode,
TGSI_WRITEMASK_XYZW,
stype, dtype, load_level_zero,
use_txf);
}
