vc4: Clamp the shadow comparison value.
Fixes piglit glsl-fs-shadow2D-clamp-z. Cc: <mesa-stable@lists.freedesktop.org>
This commit is contained in:
parent
e887341d3f
commit
08d51487e3
|
@ -495,6 +495,15 @@ ntq_emit_tex(struct vc4_compile *c, nir_tex_instr *instr)
|
|||
struct qreg u0 = qir_uniform_f(c, 0.0f);
|
||||
struct qreg u1 = qir_uniform_f(c, 1.0f);
|
||||
if (c->key->tex[unit].compare_mode) {
|
||||
/* From the GL_ARB_shadow spec:
|
||||
*
|
||||
* "Let Dt (D subscript t) be the depth texture
|
||||
* value, in the range [0, 1]. Let R be the
|
||||
* interpolated texture coordinate clamped to the
|
||||
* range [0, 1]."
|
||||
*/
|
||||
compare = qir_SAT(c, compare);
|
||||
|
||||
switch (c->key->tex[unit].compare_func) {
|
||||
case PIPE_FUNC_NEVER:
|
||||
depth_output = qir_uniform_f(c, 0.0f);
|
||||
|
|
Loading…
Reference in New Issue