wined3d: Use non-deprecated texture sample builtins in shaders on core profile.

dlls/wined3d/glsl_shader.c

@@ -66,6 +66,7 @@ struct glsl_sample_function
     struct wined3d_string_buffer *name;
     DWORD coord_mask;
     enum wined3d_data_type data_type;
+    BOOL output_single_component;
 };
 
 enum heap_node_op
@@ -2657,6 +2658,8 @@ static void shader_glsl_get_sample_function(const struct wined3d_shader_context
     if (resource_type == WINED3D_SHADER_RESOURCE_TEXTURE_CUBE)
         projected = FALSE;
 
+    if (needs_legacy_glsl_syntax(gl_info))
+    {
         if (shadow)
             base = "shadow";
 
@@ -2673,6 +2676,7 @@ static void shader_glsl_get_sample_function(const struct wined3d_shader_context
             else
                 FIXME("Unsupported grad function.\n");
         }
+    }
 
     sample_function->name = string_buffer_get(priv->string_buffers);
     string_buffer_sprintf(sample_function->name, "%s%s%s%s%s", base, type_part, projected ? "Proj" : "",
@@ -2682,6 +2686,7 @@ static void shader_glsl_get_sample_function(const struct wined3d_shader_context
     if (shadow)
         ++coord_size;
     sample_function->coord_mask = (1u << coord_size) - 1;
+    sample_function->output_single_component = shadow && !needs_legacy_glsl_syntax(gl_info);
 }
 
 static void shader_glsl_release_sample_function(const struct wined3d_shader_context *ctx,
@@ -2828,6 +2833,9 @@ static void PRINTF_ATTR(8, 9) shader_glsl_gen_sample_code(const struct wined3d_s
 
     shader_glsl_append_dst_ext(ins->ctx->buffer, ins, &ins->dst[0], sample_function->data_type);
 
+    if (sample_function->output_single_component)
+        shader_addline(ins->ctx->buffer, "vec4(");
+
     shader_addline(ins->ctx->buffer, "%s(%s_sampler%u, ",
             sample_function->name->buffer, shader_glsl_get_prefix(version->type), sampler);
 
@@ -2874,6 +2882,9 @@ static void PRINTF_ATTR(8, 9) shader_glsl_gen_sample_code(const struct wined3d_s
     else
         shader_addline(ins->ctx->buffer, ")");
 
+    if (sample_function->output_single_component)
+        shader_addline(ins->ctx->buffer, ")");
+
     shader_addline(ins->ctx->buffer, "%s);\n", dst_swizzle);
 
     if (!is_identity_fixup(fixup))