diff options
Diffstat (limited to 'src/gallium/drivers')
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_program.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c index 86f71f68d82..abd20a5940b 100644 --- a/src/gallium/drivers/vc4/vc4_program.c +++ b/src/gallium/drivers/vc4/vc4_program.c @@ -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); |