Francisco Casas : vkd3d-shader/d3dbc: Check profiles before writing SLT and CMP.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 7b883eef531be97108afbbffd538cede2020940d
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/7b883eef531be97108afbbffd538ce...

Author: Francisco Casas 
Date:   Mon Feb 26 15:24:38 2024 -0300

vkd3d-shader/d3dbc: Check profiles before writing SLT and CMP.

---

libs/vkd3d-shader/d3dbc.c | 4 ++++
 libs/vkd3d-shader/hlsl.h  | 1 +
 2 files changed, 5 insertions(+)

diff --git a/libs/vkd3d-shader/d3dbc.c b/libs/vkd3d-shader/d3dbc.c
index 57dd0258..3a815dc5 100644
--- a/libs/vkd3d-shader/d3dbc.c
+++ b/libs/vkd3d-shader/d3dbc.c
@@ -2334,10 +2334,14 @@ static void write_sm1_expr(struct hlsl_ctx *ctx, struct vkd3d_bytecode_buffer *b
             break;

case HLSL_OP2_SLT:
+            if (ctx->profile->type == VKD3D_SHADER_TYPE_PIXEL)
+                hlsl_fixme(ctx, &instr->loc, "Lower SLT instructions for pixel shaders.");
             write_sm1_binary_op(ctx, buffer, D3DSIO_SLT, &instr->reg, &arg1->reg, &arg2->reg);
             break;

case HLSL_OP3_CMP:
+            if (ctx->profile->type == VKD3D_SHADER_TYPE_VERTEX)
+                hlsl_fixme(ctx, &instr->loc, "Lower CMP instructions for vertex shaders.");
             write_sm1_ternary_op(ctx, buffer, D3DSIO_CMP, &instr->reg, &arg1->reg, &arg2->reg, &arg3->reg);
             break;

diff --git a/libs/vkd3d-shader/hlsl.h b/libs/vkd3d-shader/hlsl.h
index 9781dd33..9aae913a 100644
--- a/libs/vkd3d-shader/hlsl.h
+++ b/libs/vkd3d-shader/hlsl.h
@@ -594,6 +594,7 @@ enum hlsl_ir_expr_op
     HLSL_OP2_MUL,
     HLSL_OP2_NEQUAL,
     HLSL_OP2_RSHIFT,
+    /* SLT(a, b) retrieves 1.0 if (a < b), else 0.0. Only used for SM1-SM3 target vertex shaders. */
     HLSL_OP2_SLT,

/* DP2ADD(a, b, c) computes the scalar product of a.xy and b.xy,