Module: Mesa
Branch: master
Commit: e7a6c544739a266bae02813da2fa775f146d5d72
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=e7a6c544739a266bae02813da2fa775f146d5d72
Author: Eric Anholt <e...@anholt.net>
Date: Sun Sep 7 12:53:03 2014 -0700
vc4: Add support for depth texturing.
---
src/gallium/drivers/vc4/vc4_program.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/src/gallium/drivers/vc4/vc4_program.c
b/src/gallium/drivers/vc4/vc4_program.c
index 2f85cc6..ba6ed3c 100644
--- a/src/gallium/drivers/vc4/vc4_program.c
+++ b/src/gallium/drivers/vc4/vc4_program.c
@@ -499,11 +499,21 @@ tgsi_to_qir_tex(struct vc4_compile *c,
c->num_texture_samples++;
struct qreg r4 = qir_TEX_RESULT(c);
+ enum pipe_format format = c->key->tex_format[unit];
+
struct qreg unpacked[4];
- for (int i = 0; i < 4; i++)
- unpacked[i] = qir_R4_UNPACK(c, r4, i);
+ if (util_format_is_depth_or_stencil(format)) {
+ struct qreg depthf = qir_ITOF(c, qir_SHR(c, r4,
+ qir_uniform_ui(c,
8)));
+ struct qreg normalized = qir_FMUL(c, depthf,
+ qir_uniform_f(c,
1.0f/0xffffff));
+ for (int i = 0; i < 4; i++)
+ unpacked[i] = normalized;
+ } else {
+ for (int i = 0; i < 4; i++)
+ unpacked[i] = qir_R4_UNPACK(c, r4, i);
+ }
- enum pipe_format format = c->key->tex_format[unit];
const uint8_t *swiz = vc4_get_format_swizzle(format);
for (int i = 0; i < 4; i++) {
if (!(tgsi_inst->Dst[0].Register.WriteMask & (1 << i)))
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