microsoft/compiler: Add a max shader model option

Reviewed-by: Enrico Galli <enrico.galli@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17603>

src/gallium/drivers/d3d12/d3d12_compiler.cpp

@@ -148,6 +148,7 @@ compile_nir(struct d3d12_context *ctx, struct d3d12_shader_selector *sel,
    opts.provoking_vertex = key->fs.provoking_vertex;
    opts.input_clip_size = key->input_clip_size;
    opts.environment = DXIL_ENVIRONMENT_GL;
+   opts.shader_model_max = SHADER_MODEL_6_2;
 
    struct blob tmp;
    if (!nir_to_dxil(nir, &opts, &tmp)) {

src/microsoft/clc/clc_compiler.c

@@ -1113,6 +1113,7 @@ clc_spirv_to_dxil(struct clc_libclc *lib,
       .disable_math_refactoring = true,
       .num_kernel_globals = num_global_inputs,
       .environment = DXIL_ENVIRONMENT_CL,
+      .shader_model_max = SHADER_MODEL_6_2,
    };
 
    for (unsigned i = 0; i < out_dxil->kernel->num_args; i++) {

src/microsoft/compiler/nir_to_dxil.c

@@ -5703,6 +5703,11 @@ nir_to_dxil(struct nir_shader *s, const struct nir_to_dxil_options *opts,
    debug_dxil = (int)debug_get_option_debug_dxil();
    blob_init(blob);
 
+   if (opts->shader_model_max < SHADER_MODEL_6_1) {
+      debug_printf("D3D12: cannot support emitting shader model 6.0 or lower\n");
+      return false;
+   }
+
    struct ntd_context *ctx = calloc(1, sizeof(*ctx));
    if (!ctx)
       return false;
@@ -5775,6 +5780,13 @@ nir_to_dxil(struct nir_shader *s, const struct nir_to_dxil_options *opts,
       goto out;
    }
 
+   assert(ctx->mod.major_version == 6 && ctx->mod.minor_version >= 1);
+   if ((ctx->mod.major_version << 16 | ctx->mod.minor_version) > opts->shader_model_max) {
+      debug_printf("D3D12: max shader model exceeded\n");
+      retval = false;
+      goto out;
+   }
+
    if (debug_dxil & DXIL_DEBUG_DUMP_MODULE) {
       struct dxil_dumper *dumper = dxil_dump_create();
       dxil_dump_module(dumper, &ctx->mod);

src/microsoft/compiler/nir_to_dxil.h

@@ -80,6 +80,12 @@ enum dxil_environment {
    DXIL_ENVIRONMENT_VULKAN,
 };
 
+enum dxil_shader_model {
+   SHADER_MODEL_6_0 = 0x60000,
+   SHADER_MODEL_6_1,
+   SHADER_MODEL_6_2,
+};
+
 struct nir_to_dxil_options {
    bool interpolate_at_vertex;
    bool lower_int16;
@@ -90,6 +96,7 @@ struct nir_to_dxil_options {
    unsigned num_kernel_globals;
    unsigned input_clip_size;
    enum dxil_environment environment;
+   uint32_t shader_model_max;
 };
 
 bool

src/microsoft/spirv_to_dxil/spirv_to_dxil.c

@@ -145,6 +145,7 @@ spirv_to_dxil(const uint32_t *words, size_t word_count,
 
    struct nir_to_dxil_options opts = {
       .environment = DXIL_ENVIRONMENT_VULKAN,
+      .shader_model_max = SHADER_MODEL_6_2,
    };
    struct blob dxil_blob;
    if (!nir_to_dxil(nir, &opts, &dxil_blob)) {

src/microsoft/vulkan/dzn_meta.c

@@ -43,7 +43,10 @@ dzn_meta_compile_shader(struct dzn_device *device, nir_shader *nir,
        (instance->debug_flags & DZN_DEBUG_INTERNAL))
       nir_print_shader(nir, stderr);
 
-   struct nir_to_dxil_options opts = { .environment = DXIL_ENVIRONMENT_VULKAN };
+   struct nir_to_dxil_options opts = {
+      .environment = DXIL_ENVIRONMENT_VULKAN,
+      .shader_model_max = SHADER_MODEL_6_2,
+   };
    struct blob dxil_blob;
    ASSERTED bool ret = nir_to_dxil(nir, &opts, &dxil_blob);
    assert(ret);

src/microsoft/vulkan/dzn_pipeline.c

@@ -347,6 +347,7 @@ dzn_pipeline_compile_shader(struct dzn_device *device,
       container_of(device->vk.physical->instance, struct dzn_instance, vk);
    struct nir_to_dxil_options opts = {
       .environment = DXIL_ENVIRONMENT_VULKAN,
+      .shader_model_max = SHADER_MODEL_6_2,
    };
    struct blob dxil_blob;
    VkResult result = VK_SUCCESS;