From a6c989bc1ba3da2cd7fdf2f51c915b838af4a2aa Mon Sep 17 00:00:00 2001
From: Bastiaan Olij <mux213@gmail.com>
Date: Mon, 22 Mar 2021 21:04:55 +1100
Subject: Obtain supported Vulkan API

---
 servers/rendering/rendering_device.cpp |  2 +-
 servers/rendering/rendering_device.h   | 35 +++++++++++++++++++++++++++++++++-
 2 files changed, 35 insertions(+), 2 deletions(-)

(limited to 'servers/rendering')

diff --git a/servers/rendering/rendering_device.cpp b/servers/rendering/rendering_device.cpp
index 27a9353e4e..e6ad001807 100644
--- a/servers/rendering/rendering_device.cpp
+++ b/servers/rendering/rendering_device.cpp
@@ -59,7 +59,7 @@ Vector<uint8_t> RenderingDevice::shader_compile_from_source(ShaderStage p_stage,
 
 	ERR_FAIL_COND_V(!compile_function, Vector<uint8_t>());
 
-	return compile_function(p_stage, p_source_code, p_language, r_error);
+	return compile_function(p_stage, p_source_code, p_language, r_error, &device_capabilities);
 }
 
 RID RenderingDevice::_texture_create(const Ref<RDTextureFormat> &p_format, const Ref<RDTextureView> &p_view, const TypedArray<PackedByteArray> &p_data) {
diff --git a/servers/rendering/rendering_device.h b/servers/rendering/rendering_device.h
index 9fbf58d131..2de0549e8d 100644
--- a/servers/rendering/rendering_device.h
+++ b/servers/rendering/rendering_device.h
@@ -51,6 +51,13 @@ class RDPipelineColorBlendState;
 class RenderingDevice : public Object {
 	GDCLASS(RenderingDevice, Object)
 public:
+	enum DeviceFamily {
+		DEVICE_UNKNOWN,
+		DEVICE_OPENGL,
+		DEVICE_VULKAN,
+		DEVICE_DIRECTX
+	};
+
 	enum ShaderStage {
 		SHADER_STAGE_VERTEX,
 		SHADER_STAGE_FRAGMENT,
@@ -70,7 +77,29 @@ public:
 		SHADER_LANGUAGE_HLSL
 	};
 
-	typedef Vector<uint8_t> (*ShaderCompileFunction)(ShaderStage p_stage, const String &p_source_code, ShaderLanguage p_language, String *r_error);
+	enum SubgroupOperations {
+		SUBGROUP_BASIC_BIT = 1,
+		SUBGROUP_VOTE_BIT = 2,
+		SUBGROUP_ARITHMETIC_BIT = 4,
+		SUBGROUP_BALLOT_BIT = 8,
+		SUBGROUP_SHUFFLE_BIT = 16,
+		SUBGROUP_SHUFFLE_RELATIVE_BIT = 32,
+		SUBGROUP_CLUSTERED_BIT = 64,
+		SUBGROUP_QUAD_BIT = 128,
+	};
+
+	struct Capabilities {
+		// main device info
+		DeviceFamily device_family = DEVICE_UNKNOWN;
+		uint32_t version_major = 1.0;
+		uint32_t version_minor = 0.0;
+		// subgroup capabilities
+		uint32_t subgroup_size = 0;
+		uint32_t subgroup_in_shaders = 0; // Set flags using SHADER_STAGE_VERTEX_BIT, SHADER_STAGE_FRAGMENT_BIT, etc.
+		uint32_t subgroup_operations = 0; // Set flags, using SubgroupOperations
+	};
+
+	typedef Vector<uint8_t> (*ShaderCompileFunction)(ShaderStage p_stage, const String &p_source_code, ShaderLanguage p_language, String *r_error, const Capabilities *p_capabilities);
 	typedef Vector<uint8_t> (*ShaderCacheFunction)(ShaderStage p_stage, const String &p_source_code, ShaderLanguage p_language);
 
 private:
@@ -82,6 +111,8 @@ private:
 protected:
 	static void _bind_methods();
 
+	Capabilities device_capabilities;
+
 public:
 	//base numeric ID for all types
 	enum {
@@ -597,6 +628,8 @@ public:
 	/**** SHADER ****/
 	/****************/
 
+	const Capabilities *get_device_capabilities() const { return &device_capabilities; };
+
 	virtual Vector<uint8_t> shader_compile_from_source(ShaderStage p_stage, const String &p_source_code, ShaderLanguage p_language = SHADER_LANGUAGE_GLSL, String *r_error = nullptr, bool p_allow_cache = true);
 
 	static void shader_set_compile_function(ShaderCompileFunction p_function);
-- 
cgit v1.2.3