Mesa (main): r300: Print warning when stubbing derivatives
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Thu Apr 21 16:56:04 UTC 2022
Module: Mesa
Branch: main
Commit: d48c10fab38217264045064b3f48ecac0c24b7bb
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=d48c10fab38217264045064b3f48ecac0c24b7bb
Author: Filip Gawin <filip.gawin at zoho.com>
Date: Sun Jan 23 17:41:43 2022 +0100
r300: Print warning when stubbing derivatives
Fixes: e1c640c3a43d741719864b35cbf855aa82be0611
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14669>
---
src/gallium/drivers/r300/compiler/radeon_program_alu.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/gallium/drivers/r300/compiler/radeon_program_alu.c b/src/gallium/drivers/r300/compiler/radeon_program_alu.c
index 47fdd7885c9..7ea348dc5b9 100644
--- a/src/gallium/drivers/r300/compiler/radeon_program_alu.c
+++ b/src/gallium/drivers/r300/compiler/radeon_program_alu.c
@@ -38,6 +38,7 @@
#include "radeon_compiler.h"
#include "radeon_compiler_util.h"
+#include "util/log.h"
static struct rc_instruction *emit1(
struct radeon_compiler * c, struct rc_instruction * after,
@@ -1100,6 +1101,10 @@ int radeonStubDeriv(struct radeon_compiler* c,
inst->U.I.Opcode = RC_OPCODE_MOV;
inst->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_0000;
+ mesa_logw_once("r300: WARNING: Shader is trying to use derivatives, "
+ "but the hardware doesn't support it. "
+ "Expect possible misrendering (it's not a bug, do not report it).");
+
return 1;
}
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