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Backport spatial shader built-ins
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Backport of this PR: godotengine#63597
This adds these as new Built-Ins to Spatial Shaders
* Object's Position in World Space
* Camera Position in World Space
* Camera Direction in World Space
* Object's Position in View Space
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@paddy-exe
paddy-exe committed Aug 5, 2022
1 parent ef7502e commit be3d331
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Showing 5 changed files with 32 additions and 0 deletions.
4 changes: 4 additions & 0 deletions drivers/gles2/shader_compiler_gles2.cpp
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Expand Up @@ -1158,6 +1158,10 @@ ShaderCompilerGLES2::ShaderCompilerGLES2() {
//actions[VS::SHADER_SPATIAL].renames["DEPTH"] = "gl_FragDepth";
actions[VS::SHADER_SPATIAL].renames["ALPHA_SCISSOR"] = "alpha_scissor";
actions[VS::SHADER_SPATIAL].renames["OUTPUT_IS_SRGB"] = "SHADER_IS_SRGB";
actions[VS::SHADER_SPATIAL].renames["NODE_POSITION_WORLD"] = "world_transform[3].xyz";
actions[VS::SHADER_SPATIAL].renames["CAMERA_POSITION_WORLD"] = "camera_matrix[3].xyz";
actions[VS::SHADER_SPATIAL].renames["CAMERA_DIRECTION_WORLD"] = "camera_inverse_matrix[3].xyz";
actions[VS::SHADER_SPATIAL].renames["NODE_POSITION_VIEW"] = "(world_transform * camera_inverse_matrix)[3].xyz";

//for light
actions[VS::SHADER_SPATIAL].renames["VIEW"] = "view";
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4 changes: 4 additions & 0 deletions drivers/gles3/shader_compiler_gles3.cpp
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Expand Up @@ -1216,6 +1216,10 @@ ShaderCompilerGLES3::ShaderCompilerGLES3() {
actions[VS::SHADER_SPATIAL].renames["DEPTH"] = "gl_FragDepth";
actions[VS::SHADER_SPATIAL].renames["ALPHA_SCISSOR"] = "alpha_scissor";
actions[VS::SHADER_SPATIAL].renames["OUTPUT_IS_SRGB"] = "SHADER_IS_SRGB";
actions[VS::SHADER_SPATIAL].renames["NODE_POSITION_WORLD"] = "world_transform[3].xyz";
actions[VS::SHADER_SPATIAL].renames["CAMERA_POSITION_WORLD"] = "camera_matrix[3].xyz";
actions[VS::SHADER_SPATIAL].renames["CAMERA_DIRECTION_WORLD"] = "camera_inverse_matrix[3].xyz";
actions[VS::SHADER_SPATIAL].renames["NODE_POSITION_VIEW"] = "(world_transform * camera_inverse_matrix)[3].xyz";

//for light
actions[VS::SHADER_SPATIAL].renames["VIEW"] = "view";
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8 changes: 8 additions & 0 deletions editor/plugins/visual_shader_editor_plugin.cpp
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Expand Up @@ -2623,6 +2623,10 @@ VisualShaderEditor::VisualShaderEditor() {
add_options.push_back(AddOption("UV2", "Input", "Fragment", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "uv2"), "uv2", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_FRAGMENT, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("Vertex", "Input", "Fragment", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "vertex"), "vertex", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_FRAGMENT, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("View", "Input", "Fragment", "VisualShaderNodeInput", vformat(input_param_for_fragment_and_light_shader_modes, "view"), "view", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_FRAGMENT, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("NodePositionWorld", "Input", "Fragment", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "node_position_world"), "node_position_world", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_FRAGMENT, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("CameraPositionWorld", "Input", "Fragment", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "camera_position_world"), "camera_position_world", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_FRAGMENT, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("CameraDirectionWorld", "Input", "Fragment", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "camera_direction_world"), "camera_direction_world", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_FRAGMENT, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("NodePositionView", "Input", "Fragment", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "node_position_view"), "node_position_view", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_FRAGMENT, Shader::MODE_SPATIAL));

add_options.push_back(AddOption("Albedo", "Input", "Light", "VisualShaderNodeInput", vformat(input_param_for_light_shader_mode, "albedo"), "albedo", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_LIGHT, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("Attenuation", "Input", "Light", "VisualShaderNodeInput", vformat(input_param_for_light_shader_mode, "attenuation"), "attenuation", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_LIGHT, Shader::MODE_SPATIAL));
Expand All @@ -2645,6 +2649,10 @@ VisualShaderEditor::VisualShaderEditor() {
add_options.push_back(AddOption("UV", "Input", "Vertex", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "uv"), "uv", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_VERTEX, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("UV2", "Input", "Vertex", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "uv2"), "uv2", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_VERTEX, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("Vertex", "Input", "Vertex", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "vertex"), "vertex", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_VERTEX, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("NodePositionWorld", "Input", "Vertex", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "node_position_world"), "node_position_world", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_VERTEX, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("CameraPositionWorld", "Input", "Vertex", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "camera_position_world"), "camera_position_world", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_VERTEX, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("CameraDirectionWorld", "Input", "Vertex", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "camera_direction_world"), "camera_direction_world", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_VERTEX, Shader::MODE_SPATIAL));
add_options.push_back(AddOption("NodePositionView", "Input", "Vertex", "VisualShaderNodeInput", vformat(input_param_for_vertex_and_fragment_shader_modes, "node_position_view"), "node_position_view", VisualShaderNode::PORT_TYPE_VECTOR, VisualShader::TYPE_VERTEX, Shader::MODE_SPATIAL));

// CANVASITEM INPUTS

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8 changes: 8 additions & 0 deletions scene/resources/visual_shader.cpp
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Expand Up @@ -1579,6 +1579,10 @@ const VisualShaderNodeInput::Port VisualShaderNodeInput::ports[] = {
{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_SCALAR, "time", "TIME" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_VECTOR, "viewport_size", "vec3(VIEWPORT_SIZE, 0)" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_BOOLEAN, "output_is_srgb", "OUTPUT_IS_SRGB" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_VECTOR, "node_position_world", "NODE_POSITION_WORLD" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_VECTOR, "camera_position_world", "CAMERA_POSITION_WORLD" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_VECTOR, "camera_direction_world", "CAMERA_DIRECTION_WORLD" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_VECTOR, "node_position_view", "NODE_POSITION_VIEW" },

// Spatial, Fragment
{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_VECTOR, "fragcoord", "FRAGCOORD.xyz" },
Expand Down Expand Up @@ -1607,6 +1611,10 @@ const VisualShaderNodeInput::Port VisualShaderNodeInput::ports[] = {
{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_BOOLEAN, "front_facing", "FRONT_FACING" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_SAMPLER, "screen_texture", "SCREEN_TEXTURE" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_SAMPLER, "depth_texture", "DEPTH_TEXTURE" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_VECTOR, "node_position_world", "NODE_POSITION_WORLD" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_VECTOR, "camera_position_world", "CAMERA_POSITION_WORLD" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_VECTOR, "camera_direction_world", "CAMERA_DIRECTION_WORLD" },
{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_VECTOR, "node_position_view", "NODE_POSITION_VIEW" },

// Spatial, Light
{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_VECTOR, "fragcoord", "FRAGCOORD.xyz" },
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8 changes: 8 additions & 0 deletions servers/visual/shader_types.cpp
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Expand Up @@ -81,6 +81,10 @@ ShaderTypes::ShaderTypes() {
shader_modes[VS::SHADER_SPATIAL].functions["vertex"].built_ins["VIEW_RIGHT"] = constt(ShaderLanguage::TYPE_INT);
shader_modes[VS::SHADER_SPATIAL].functions["vertex"].built_ins["VIEWPORT_SIZE"] = constt(ShaderLanguage::TYPE_VEC2);
shader_modes[VS::SHADER_SPATIAL].functions["vertex"].built_ins["OUTPUT_IS_SRGB"] = constt(ShaderLanguage::TYPE_BOOL);
shader_modes[VS::SHADER_SPATIAL].functions["vertex"].built_ins["NODE_POSITION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[VS::SHADER_SPATIAL].functions["vertex"].built_ins["CAMERA_POSITION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[VS::SHADER_SPATIAL].functions["vertex"].built_ins["CAMERA_DIRECTION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[VS::SHADER_SPATIAL].functions["vertex"].built_ins["NODE_POSITION_VIEW"] = ShaderLanguage::TYPE_VEC3;
shader_modes[VS::SHADER_SPATIAL].functions["vertex"].main_function = true;

shader_modes[VS::SHADER_SPATIAL].functions["fragment"].built_ins["VERTEX"] = constt(ShaderLanguage::TYPE_VEC3);
Expand Down Expand Up @@ -129,6 +133,10 @@ ShaderTypes::ShaderTypes() {
shader_modes[VS::SHADER_SPATIAL].functions["fragment"].built_ins["PROJECTION_MATRIX"] = constt(ShaderLanguage::TYPE_MAT4);
shader_modes[VS::SHADER_SPATIAL].functions["fragment"].built_ins["INV_PROJECTION_MATRIX"] = constt(ShaderLanguage::TYPE_MAT4);
shader_modes[VS::SHADER_SPATIAL].functions["fragment"].built_ins["VIEWPORT_SIZE"] = constt(ShaderLanguage::TYPE_VEC2);
shader_modes[VS::SHADER_SPATIAL].functions["fragment"].built_ins["NODE_POSITION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[VS::SHADER_SPATIAL].functions["fragment"].built_ins["CAMERA_POSITION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[VS::SHADER_SPATIAL].functions["fragment"].built_ins["CAMERA_DIRECTION_WORLD"] = ShaderLanguage::TYPE_VEC3;
shader_modes[VS::SHADER_SPATIAL].functions["fragment"].built_ins["NODE_POSITION_VIEW"] = ShaderLanguage::TYPE_VEC3;
shader_modes[VS::SHADER_SPATIAL].functions["fragment"].can_discard = true;
shader_modes[VS::SHADER_SPATIAL].functions["fragment"].main_function = true;

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