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-rw-r--r--src/gallium/drivers/svga/svga_tgsi_insn.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/src/gallium/drivers/svga/svga_tgsi_insn.c b/src/gallium/drivers/svga/svga_tgsi_insn.c
index f5842eff3d2..99600cf5c00 100644
--- a/src/gallium/drivers/svga/svga_tgsi_insn.c
+++ b/src/gallium/drivers/svga/svga_tgsi_insn.c
@@ -1704,6 +1704,10 @@ static boolean emit_deriv(struct svga_shader_emitter *emit,
}
else {
unsigned opcode;
+ const struct tgsi_full_src_register *reg = &insn->Src[0];
+ SVGA3dShaderInstToken inst;
+ SVGA3dShaderDestToken dst;
+ struct src_register src0;
switch (insn->Instruction.Opcode) {
case TGSI_OPCODE_DDX:
@@ -1716,7 +1720,21 @@ static boolean emit_deriv(struct svga_shader_emitter *emit,
return FALSE;
}
- return emit_simple_instruction( emit, opcode, insn );
+ inst = inst_token( opcode );
+ dst = translate_dst_register( emit, insn, 0 );
+ src0 = translate_src_register( emit, reg );
+
+ /* We cannot use negate or abs on source to dsx/dsy instruction.
+ */
+ if (reg->Register.Absolute ||
+ reg->Register.Negate) {
+ SVGA3dShaderDestToken temp = get_temp( emit );
+
+ if (!emit_repl( emit, temp, &src0 ))
+ return FALSE;
+ }
+
+ return submit_op1( emit, inst, dst, src0 );
}
}