gfx/shader: Inlining, std::string_view and optimizations

CMakeLists.txt

@@ -845,6 +845,9 @@ if(REQUIRE_SHADER_CODE)
 		"source/gfx/shader/gfx-shader-param-texture.hpp"
 		"source/gfx/shader/gfx-shader-param-texture.cpp"
 	)
+	list(APPEND PROJECT_DATA
+		"data/examples/shaders/feature-test.effect"
+	)
 endif()
 
 # Combine it all

data/examples/shaders/feature-test.effect

@@ -0,0 +1,113 @@
+// --------------------------------------------------------------------------------
+// Uniforms set by libobs
+uniform float4x4 ViewProj<
+	bool automatic = true;
+>;
+
+// --------------------------------------------------------------------------------
+// Uniforms set by StreamFX
+uniform float4 Time<
+	bool automatic = true;
+>;
+uniform float4 ViewSize<
+	bool automatic = true;
+>;
+
+// Filters, Transitions
+uniform texture2d InputA<
+	bool automatic = true;
+>;
+
+// Transitions
+uniform texture2d InputB<
+	bool automatic = true;
+>;
+uniform float TransitionTime<
+	bool automatic = true;
+>;
+
+// --------------------------------------------------------------------------------
+// Parameters
+uniform bool BoolParameter = false;
+uniform float FloatParameter<
+	string name = "Float Parameter";
+	string description = "This is a 32-bit floating point value.";
+	string field_type = "input";
+	string suffix = " %";
+	float minimum = -100.;
+	float maximum = 100.;
+	float step = .5;
+	float scale = .01;
+> = 0.;
+uniform float2 Float2Parameter<
+	string name = "Float2 Parameter";
+	string description = "This is a 32-bit floating point value.";
+	string field_type = "input";
+	string suffix = " %";
+	float2 minimum = {-100., -100.};
+	float2 maximum = {100., 100.};
+	float2 step = {.5, .5};
+	float2 scale = {.01, .01};
+> = {0., 0.};
+uniform float3 Float3Parameter = {0., 0., 0.};
+uniform float4 Float4Parameter = {0., 0., 0., 0.};
+uniform int IntParameter<
+	string name = "Enum Parameter";
+	string description = "This parameter is an enumeration";
+	string field_type = "enum";
+	// Enumeration
+	int enum = 4;
+	int enum_0 = 0;
+	string enum_0_name = "Null";
+	int enum_1 = 1;
+	string enum_1_name = "One";
+	int enum_2 = 2;
+	string enum_2_name = "Two"; 
+	int enum_3 = 4;
+	string enum_3_name = "Four";
+> = 0;
+uniform int2 Int2Parameter = {0, 0};
+uniform int3 Int3Parameter = {0, 0, 0};
+uniform int4 Int4Parameter = {0, 0, 0, 0};
+
+// --------------------------------------------------------------------------------
+// Vertex Processing
+struct VertexData {
+	float4 pos : POSITION;
+	float2 uv  : TEXCOORD0;
+};
+
+VertexData VSDefault(VertexData vtx) {
+	vtx.pos = mul(float4(vtx.pos.xyz, 1.), ViewProj);
+	return vtx;
+};
+
+// --------------------------------------------------------------------------------
+// Default Technique
+float4 PSDefault(VertexData vtx) : TARGET {
+	if (BoolParameter)
+		vtx.uv += 1.;
+	vtx.uv += FloatParameter;
+	vtx.uv += Float2Parameter;
+	vtx.uv += Float3Parameter.xy * Float3Parameter.zz;
+	vtx.uv += Float4Parameter.xy * Float4Parameter.zz;
+	
+	if (IntParameter == 1) {
+		return float4(1., 0., 0., 1.);
+	} else if (IntParameter == 2)  {
+		return float4(0., 1., 0., 1.);
+	} else if (IntParameter == 4)  {
+		return float4(0., 0., 1., 1.);
+	}
+
+	return float4(0., 0., 0., 1.);
+}
+
+technique Draw
+{
+	pass
+	{
+		vertex_shader = VSDefault(vtx);
+		pixel_shader  = PSDefault(vtx); 
+	}
+}

source/gfx/shader/gfx-shader-param.cpp

@@ -175,61 +175,6 @@ void gfx::shader::parameter::update(obs_data_t* settings) {}
 
 void gfx::shader::parameter::assign() {}
 
-gs::effect_parameter gfx::shader::parameter::get_parameter()
-{
-	return _param;
-}
-
-gfx::shader::parameter_type gfx::shader::parameter::get_type()
-{
-	return _type;
-}
-
-std::size_t gfx::shader::parameter::get_size()
-{
-	return _size;
-}
-
-int32_t gfx::shader::parameter::get_order()
-{
-	return _order;
-}
-
-const std::string& gfx::shader::parameter::get_key()
-{
-	return _key;
-}
-
-bool gfx::shader::parameter::is_visible()
-{
-	return _visible && !is_automatic();
-}
-
-bool gfx::shader::parameter::is_automatic()
-{
-	return _automatic;
-}
-
-bool gfx::shader::parameter::has_name()
-{
-	return _name.length() > 0;
-}
-
-const std::string& gfx::shader::parameter::get_name()
-{
-	return _name;
-}
-
-bool gfx::shader::parameter::has_description()
-{
-	return _description.length() > 0;
-}
-
-const std::string& gfx::shader::parameter::get_description()
-{
-	return _description;
-}
-
 std::shared_ptr<gfx::shader::parameter> gfx::shader::parameter::make_parameter(gs::effect_parameter param,
 																			   std::string          prefix)
 {

source/gfx/shader/gfx-shader-param.hpp

@@ -81,27 +81,60 @@ namespace gfx {
 			virtual void assign();
 
 			public:
-			gs::effect_parameter get_parameter();
+			inline gs::effect_parameter get_parameter()
+			{
+				return _param;
+			}
 
-			parameter_type get_type();
+			inline parameter_type get_type()
+			{
+				return _type;
+			}
 
-			std::size_t get_size();
+			inline std::size_t get_size()
+			{
+				return _size;
+			}
 
-			int32_t get_order();
+			inline int32_t get_order()
+			{
+				return _order;
+			}
 
-			const std::string& get_key();
+			inline std::string_view get_key()
+			{
+				return _key;
+			}
 
-			bool is_visible();
+			inline bool is_visible()
+			{
+				return _visible && !_automatic;
+			}
 
-			bool is_automatic();
+			inline bool is_automatic()
+			{
+				return _automatic;
+			}
 
-			bool has_name();
+			inline bool has_name()
+			{
+				return _name.length() > 0;
+			}
 
-			const std::string& get_name();
+			inline std::string_view get_name()
+			{
+				return _name;
+			}
 
-			bool has_description();
+			inline bool has_description()
+			{
+				return _description.length() > 0;
+			}
 
-			const std::string& get_description();
+			inline std::string_view get_description()
+			{
+				return _description;
+			}
 
 			public:
 			static std::shared_ptr<parameter> make_parameter(gs::effect_parameter param, std::string prefix);

source/gfx/shader/gfx-shader.cpp

@@ -509,9 +509,17 @@ void gfx::shader::shader::set_input_a(std::shared_ptr<gs::texture> tex)
 	if (!_shader)
 		return;
 
-	if (gs::effect_parameter el = _shader.get_parameter("InputA"); el != nullptr) {
+	std::string_view params[] = {
+		"InputA",
+		"image",
+		"tex_a",
+	};
+	for (auto& name : params) {
+		if (gs::effect_parameter el = _shader.get_parameter(name.data()); el != nullptr) {
 			if (el.get_type() == gs::effect_parameter::type::Texture) {
 				el.set_texture(tex);
+				break;
+			}
 		}
 	}
 }
@@ -521,9 +529,17 @@ void gfx::shader::shader::set_input_b(std::shared_ptr<gs::texture> tex)
 	if (!_shader)
 		return;
 
-	if (gs::effect_parameter el = _shader.get_parameter("InputB"); el != nullptr) {
+	std::string_view params[] = {
+		"InputB",
+		"image2",
+		"tex_b",
+	};
+	for (auto& name : params) {
+		if (gs::effect_parameter el = _shader.get_parameter(name.data()); el != nullptr) {
 			if (el.get_type() == gs::effect_parameter::type::Texture) {
 				el.set_texture(tex);
+				break;
+			}
 		}
 	}
 }

source/gfx/shader/gfx-shader.hpp

@@ -38,7 +38,7 @@ namespace gfx {
 			Transition,
 		};
 
-		typedef std::map<std::string, std::shared_ptr<parameter>> shader_param_map_t;
+		typedef std::map<std::string_view, std::shared_ptr<parameter>> shader_param_map_t;
 
 		class shader {
 			obs_source_t* _self;