[PATCH v6 2/3] vkd3d-shader/tpf: Add support for emitting sample_l instructions

[Ethan Lee]

From: Ethan Lee

This gets the SampleLevel() HLSL test to pass.

Signed-off-by: Ethan Lee 
---
 libs/vkd3d-shader/tpf.c   | 12 +++++++-----
 tests/sampler.shader_test |  6 +++---
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/libs/vkd3d-shader/tpf.c b/libs/vkd3d-shader/tpf.c
index 38d5c180..f39491e2 100644
--- a/libs/vkd3d-shader/tpf.c
+++ b/libs/vkd3d-shader/tpf.c
@@ -3708,6 +3708,10 @@ static void write_sm4_sample(struct hlsl_ctx *ctx, struct vkd3d_bytecode_buffer
             instr.opcode = VKD3D_SM4_OP_SAMPLE;
             break;

+        case HLSL_RESOURCE_SAMPLE_LOD:
+            instr.opcode = VKD3D_SM4_OP_SAMPLE_LOD;
+            break;
+
         case HLSL_RESOURCE_SAMPLE_LOD_BIAS:
             instr.opcode = VKD3D_SM4_OP_SAMPLE_B;
             break;
@@ -3734,7 +3738,8 @@ static void write_sm4_sample(struct hlsl_ctx *ctx, struct vkd3d_bytecode_buffer
     sm4_src_from_deref(ctx, &instr.srcs[2], sampler, sampler->var->data_type, VKD3DSP_WRITEMASK_ALL);
     instr.src_count = 3;

-    if (load->load_type == HLSL_RESOURCE_SAMPLE_LOD_BIAS)
+    if (load->load_type == HLSL_RESOURCE_SAMPLE_LOD
+           || load->load_type == HLSL_RESOURCE_SAMPLE_LOD_BIAS)
     {
         sm4_src_from_node(&instr.srcs[3], load->lod.node, VKD3DSP_WRITEMASK_ALL);
         ++instr.src_count;
@@ -4540,6 +4545,7 @@ static void write_sm4_resource_load(struct hlsl_ctx *ctx,
             break;

case HLSL_RESOURCE_SAMPLE:
+        case HLSL_RESOURCE_SAMPLE_LOD:
         case HLSL_RESOURCE_SAMPLE_LOD_BIAS:
             if (!load->sampler.var)
             {
@@ -4568,10 +4574,6 @@ static void write_sm4_resource_load(struct hlsl_ctx *ctx,
             write_sm4_gather(ctx, buffer, resource_type, &load->node, &load->resource,
                     &load->sampler, coords, HLSL_SWIZZLE(W, W, W, W), texel_offset);
             break;
-
-        case HLSL_RESOURCE_SAMPLE_LOD:
-            hlsl_fixme(ctx, &load->node.loc, "SM4 sample-LOD expression.");
-            break;
     }
 }

diff --git a/tests/sampler.shader_test b/tests/sampler.shader_test
index 81b0d2d0..f03d050d 100644
--- a/tests/sampler.shader_test
+++ b/tests/sampler.shader_test
@@ -33,7 +33,7 @@ float4 main() : sv_target
 draw quad
 probe all rgba (0.25, 0, 0.25, 0)

-[pixel shader todo]
+[pixel shader]
 SamplerState s;
 Texture2D t;

@@ -43,8 +43,8 @@ float4 main() : sv_target
 }

[test]
-todo draw quad
-todo probe all rgba (0.25, 0, 0.25, 0)
+draw quad
+probe all rgba (0.25, 0, 0.25, 0)

[pixel shader]
 SamplerState s;