Implement the source-in, destination-in, source-out, and destination-atop blend
modes to round out the assortment of Porter-Duff blend modes
This commit is contained in:
parent
02012431ca
commit
9b4217300f
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@ -524,11 +524,15 @@ pub enum LineJoin {
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#[derive(Clone, Copy, Debug, PartialEq)]
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#[derive(Clone, Copy, Debug, PartialEq)]
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pub enum CompositeOperation {
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pub enum CompositeOperation {
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SourceOver,
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SourceOver,
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DestinationOver,
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SourceIn,
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DestinationOut,
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SourceOut,
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SourceAtop,
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SourceAtop,
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Xor,
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DestinationOver,
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DestinationIn,
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DestinationOut,
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DestinationAtop,
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Lighter,
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Lighter,
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Xor,
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Multiply,
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Multiply,
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Screen,
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Screen,
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Overlay,
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Overlay,
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@ -547,9 +551,13 @@ impl CompositeOperation {
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fn to_blend_mode(self) -> BlendMode {
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fn to_blend_mode(self) -> BlendMode {
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match self {
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match self {
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CompositeOperation::SourceOver => BlendMode::SrcOver,
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CompositeOperation::SourceOver => BlendMode::SrcOver,
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CompositeOperation::DestinationOver => BlendMode::DestOver,
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CompositeOperation::SourceIn => BlendMode::SrcIn,
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CompositeOperation::DestinationOut => BlendMode::DestOut,
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CompositeOperation::SourceOut => BlendMode::SrcOut,
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CompositeOperation::SourceAtop => BlendMode::SrcAtop,
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CompositeOperation::SourceAtop => BlendMode::SrcAtop,
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CompositeOperation::DestinationOver => BlendMode::DestOver,
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CompositeOperation::DestinationIn => BlendMode::DestIn,
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CompositeOperation::DestinationOut => BlendMode::DestOut,
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CompositeOperation::DestinationAtop => BlendMode::DestAtop,
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CompositeOperation::Xor => BlendMode::Xor,
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CompositeOperation::Xor => BlendMode::Xor,
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CompositeOperation::Lighter => BlendMode::Lighter,
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CompositeOperation::Lighter => BlendMode::Lighter,
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CompositeOperation::Multiply => BlendMode::Multiply,
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CompositeOperation::Multiply => BlendMode::Multiply,
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@ -75,6 +75,12 @@ pub enum BlendMode {
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Lighten,
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Lighten,
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Darken,
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Darken,
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// Porter-Duff
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SrcIn,
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DestIn,
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SrcOut,
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DestAtop,
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// Overlay
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// Overlay
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Multiply,
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Multiply,
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Screen,
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Screen,
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@ -123,6 +129,10 @@ impl BlendMode {
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BlendMode::Lighter |
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BlendMode::Lighter |
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BlendMode::Lighten |
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BlendMode::Lighten |
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BlendMode::Darken |
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BlendMode::Darken |
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BlendMode::SrcIn |
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BlendMode::DestIn |
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BlendMode::SrcOut |
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BlendMode::DestAtop |
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BlendMode::Multiply |
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BlendMode::Multiply |
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BlendMode::Screen |
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BlendMode::Screen |
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BlendMode::HardLight |
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BlendMode::HardLight |
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@ -11,12 +11,13 @@
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use crate::gpu::debug::DebugUIPresenter;
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use crate::gpu::debug::DebugUIPresenter;
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use crate::gpu::options::{DestFramebuffer, RendererOptions};
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use crate::gpu::options::{DestFramebuffer, RendererOptions};
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use crate::gpu::shaders::{AlphaTileDodgeBurnProgram, AlphaTileHSLProgram, AlphaTileOverlayProgram};
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use crate::gpu::shaders::{AlphaTileDodgeBurnProgram, AlphaTileHSLProgram, AlphaTileOverlayProgram};
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use crate::gpu::shaders::{AlphaTileProgram, AlphaTileVertexArray, CopyTileProgram};
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use crate::gpu::shaders::{AlphaTilePorterDuffProgram, AlphaTileProgram, AlphaTileVertexArray};
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use crate::gpu::shaders::{CopyTileVertexArray, FillProgram, FillVertexArray, FilterBasicProgram};
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use crate::gpu::shaders::{CopyTileProgram, CopyTileVertexArray, FillProgram, FillVertexArray};
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use crate::gpu::shaders::{FilterBasicVertexArray, FilterTextProgram, FilterTextVertexArray};
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use crate::gpu::shaders::{FilterBasicProgram, FilterBasicVertexArray, FilterTextProgram};
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use crate::gpu::shaders::{MAX_FILLS_PER_BATCH, MaskTileProgram, MaskTileVertexArray};
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use crate::gpu::shaders::{FilterTextVertexArray, MAX_FILLS_PER_BATCH, MaskTileProgram};
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use crate::gpu::shaders::{ReprojectionProgram, ReprojectionVertexArray, SolidTileProgram};
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use crate::gpu::shaders::{MaskTileVertexArray, ReprojectionProgram, ReprojectionVertexArray};
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use crate::gpu::shaders::{SolidTileVertexArray, StencilProgram, StencilVertexArray};
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use crate::gpu::shaders::{SolidTileProgram, SolidTileVertexArray};
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use crate::gpu::shaders::{StencilProgram, StencilVertexArray};
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use crate::gpu_data::{AlphaTile, FillBatchPrimitive, MaskTile, PaintData, PaintPageContents};
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use crate::gpu_data::{AlphaTile, FillBatchPrimitive, MaskTile, PaintData, PaintPageContents};
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use crate::gpu_data::{PaintPageId, RenderCommand, SolidTileVertex};
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use crate::gpu_data::{PaintPageId, RenderCommand, SolidTileVertex};
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use crate::options::BoundingQuad;
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use crate::options::BoundingQuad;
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@ -61,6 +62,11 @@ const OVERLAY_BLEND_MODE_SCREEN: i32 = 1;
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const OVERLAY_BLEND_MODE_HARD_LIGHT: i32 = 2;
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const OVERLAY_BLEND_MODE_HARD_LIGHT: i32 = 2;
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const OVERLAY_BLEND_MODE_OVERLAY: i32 = 3;
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const OVERLAY_BLEND_MODE_OVERLAY: i32 = 3;
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const PORTER_DUFF_FACTOR_ZERO: i32 = 0;
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const PORTER_DUFF_FACTOR_DEST_ALPHA: i32 = 1;
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const PORTER_DUFF_FACTOR_SRC_ALPHA: i32 = 2;
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const PORTER_DUFF_FACTOR_ONE_MINUS_DEST_ALPHA: i32 = 3;
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pub struct Renderer<D>
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pub struct Renderer<D>
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where
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where
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D: Device,
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D: Device,
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@ -77,6 +83,7 @@ where
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copy_tile_program: CopyTileProgram<D>,
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copy_tile_program: CopyTileProgram<D>,
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solid_tile_program: SolidTileProgram<D>,
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solid_tile_program: SolidTileProgram<D>,
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alpha_tile_program: AlphaTileProgram<D>,
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alpha_tile_program: AlphaTileProgram<D>,
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alpha_tile_porterduff_program: AlphaTilePorterDuffProgram<D>,
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alpha_tile_overlay_program: AlphaTileOverlayProgram<D>,
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alpha_tile_overlay_program: AlphaTileOverlayProgram<D>,
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alpha_tile_dodgeburn_program: AlphaTileDodgeBurnProgram<D>,
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alpha_tile_dodgeburn_program: AlphaTileDodgeBurnProgram<D>,
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alpha_tile_hsl_program: AlphaTileHSLProgram<D>,
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alpha_tile_hsl_program: AlphaTileHSLProgram<D>,
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@ -85,6 +92,7 @@ where
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copy_tile_vertex_array: CopyTileVertexArray<D>,
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copy_tile_vertex_array: CopyTileVertexArray<D>,
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solid_tile_vertex_array: SolidTileVertexArray<D>,
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solid_tile_vertex_array: SolidTileVertexArray<D>,
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alpha_tile_vertex_array: AlphaTileVertexArray<D>,
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alpha_tile_vertex_array: AlphaTileVertexArray<D>,
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alpha_tile_porterduff_vertex_array: AlphaTileVertexArray<D>,
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alpha_tile_overlay_vertex_array: AlphaTileVertexArray<D>,
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alpha_tile_overlay_vertex_array: AlphaTileVertexArray<D>,
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alpha_tile_dodgeburn_vertex_array: AlphaTileVertexArray<D>,
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alpha_tile_dodgeburn_vertex_array: AlphaTileVertexArray<D>,
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alpha_tile_hsl_vertex_array: AlphaTileVertexArray<D>,
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alpha_tile_hsl_vertex_array: AlphaTileVertexArray<D>,
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@ -158,6 +166,7 @@ where
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let copy_tile_program = CopyTileProgram::new(&device, resources);
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let copy_tile_program = CopyTileProgram::new(&device, resources);
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let solid_tile_program = SolidTileProgram::new(&device, resources);
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let solid_tile_program = SolidTileProgram::new(&device, resources);
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let alpha_tile_program = AlphaTileProgram::new(&device, resources);
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let alpha_tile_program = AlphaTileProgram::new(&device, resources);
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let alpha_tile_porterduff_program = AlphaTilePorterDuffProgram::new(&device, resources);
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let alpha_tile_overlay_program = AlphaTileOverlayProgram::new(&device, resources);
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let alpha_tile_overlay_program = AlphaTileOverlayProgram::new(&device, resources);
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let alpha_tile_dodgeburn_program = AlphaTileDodgeBurnProgram::new(&device, resources);
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let alpha_tile_dodgeburn_program = AlphaTileDodgeBurnProgram::new(&device, resources);
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let alpha_tile_hsl_program = AlphaTileHSLProgram::new(&device, resources);
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let alpha_tile_hsl_program = AlphaTileHSLProgram::new(&device, resources);
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@ -214,6 +223,12 @@ where
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&alpha_tile_vertex_buffer,
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&alpha_tile_vertex_buffer,
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&quads_vertex_indices_buffer,
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&quads_vertex_indices_buffer,
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);
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);
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let alpha_tile_porterduff_vertex_array = AlphaTileVertexArray::new(
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&device,
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&alpha_tile_porterduff_program.alpha_tile_program,
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&alpha_tile_vertex_buffer,
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&quads_vertex_indices_buffer,
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);
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let alpha_tile_overlay_vertex_array = AlphaTileVertexArray::new(
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let alpha_tile_overlay_vertex_array = AlphaTileVertexArray::new(
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&device,
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&device,
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&alpha_tile_overlay_program.alpha_tile_program,
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&alpha_tile_overlay_program.alpha_tile_program,
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@ -293,6 +308,7 @@ where
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copy_tile_program,
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copy_tile_program,
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solid_tile_program,
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solid_tile_program,
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alpha_tile_program,
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alpha_tile_program,
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alpha_tile_porterduff_program,
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alpha_tile_overlay_program,
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alpha_tile_overlay_program,
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alpha_tile_dodgeburn_program,
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alpha_tile_dodgeburn_program,
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alpha_tile_hsl_program,
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alpha_tile_hsl_program,
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@ -301,6 +317,7 @@ where
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copy_tile_vertex_array,
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copy_tile_vertex_array,
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solid_tile_vertex_array,
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solid_tile_vertex_array,
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alpha_tile_vertex_array,
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alpha_tile_vertex_array,
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alpha_tile_porterduff_vertex_array,
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alpha_tile_overlay_vertex_array,
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alpha_tile_overlay_vertex_array,
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alpha_tile_dodgeburn_vertex_array,
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alpha_tile_dodgeburn_vertex_array,
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alpha_tile_hsl_vertex_array,
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alpha_tile_hsl_vertex_array,
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@ -735,6 +752,10 @@ where
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let (alpha_tile_program, alpha_tile_vertex_array) = match blend_mode_program {
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let (alpha_tile_program, alpha_tile_vertex_array) = match blend_mode_program {
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BlendModeProgram::Regular => (&self.alpha_tile_program, &self.alpha_tile_vertex_array),
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BlendModeProgram::Regular => (&self.alpha_tile_program, &self.alpha_tile_vertex_array),
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BlendModeProgram::PorterDuff => {
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(&self.alpha_tile_porterduff_program.alpha_tile_program,
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&self.alpha_tile_porterduff_vertex_array)
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}
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BlendModeProgram::Overlay => {
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BlendModeProgram::Overlay => {
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(&self.alpha_tile_overlay_program.alpha_tile_program,
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(&self.alpha_tile_overlay_program.alpha_tile_program,
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&self.alpha_tile_overlay_vertex_array)
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&self.alpha_tile_overlay_vertex_array)
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@ -777,6 +798,11 @@ where
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match blend_mode_program {
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match blend_mode_program {
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BlendModeProgram::Regular => {}
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BlendModeProgram::Regular => {}
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BlendModeProgram::PorterDuff => {
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self.set_uniforms_for_porter_duff_blend_mode(&mut textures,
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&mut uniforms,
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blend_mode);
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}
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BlendModeProgram::Overlay => {
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BlendModeProgram::Overlay => {
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self.set_uniforms_for_overlay_blend_mode(&mut textures, &mut uniforms, blend_mode);
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self.set_uniforms_for_overlay_blend_mode(&mut textures, &mut uniforms, blend_mode);
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}
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}
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@ -809,6 +835,37 @@ where
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self.preserve_draw_framebuffer();
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self.preserve_draw_framebuffer();
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}
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}
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fn set_uniforms_for_porter_duff_blend_mode<'a>(
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&'a self,
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textures: &mut Vec<&'a D::Texture>,
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uniforms: &mut Vec<(&'a D::Uniform, UniformData)>,
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blend_mode: BlendMode) {
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let (src_factor, dest_factor) = match blend_mode {
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BlendMode::SrcIn => {
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(PORTER_DUFF_FACTOR_DEST_ALPHA, PORTER_DUFF_FACTOR_ZERO)
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}
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BlendMode::DestIn => {
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(PORTER_DUFF_FACTOR_ZERO, PORTER_DUFF_FACTOR_SRC_ALPHA)
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}
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BlendMode::SrcOut => {
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(PORTER_DUFF_FACTOR_ONE_MINUS_DEST_ALPHA, PORTER_DUFF_FACTOR_ZERO)
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}
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BlendMode::DestAtop => {
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(PORTER_DUFF_FACTOR_ONE_MINUS_DEST_ALPHA, PORTER_DUFF_FACTOR_SRC_ALPHA)
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}
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_ => unreachable!(),
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};
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uniforms.push((&self.alpha_tile_porterduff_program.src_factor_uniform,
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UniformData::Int(src_factor)));
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uniforms.push((&self.alpha_tile_porterduff_program.dest_factor_uniform,
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UniformData::Int(dest_factor)));
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textures.push(self.device.framebuffer_texture(&self.dest_blend_framebuffer));
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uniforms.push((&self.alpha_tile_porterduff_program.dest_uniform,
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UniformData::TextureUnit(textures.len() as u32 - 1)));
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}
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fn set_uniforms_for_overlay_blend_mode<'a>(&'a self,
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fn set_uniforms_for_overlay_blend_mode<'a>(&'a self,
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textures: &mut Vec<&'a D::Texture>,
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textures: &mut Vec<&'a D::Texture>,
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uniforms: &mut Vec<(&'a D::Uniform, UniformData)>,
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uniforms: &mut Vec<(&'a D::Uniform, UniformData)>,
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@ -1477,6 +1534,10 @@ impl BlendModeExt for BlendMode {
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op: BlendOp::Min,
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op: BlendOp::Min,
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})
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})
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}
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}
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BlendMode::SrcIn |
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BlendMode::DestIn |
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BlendMode::SrcOut |
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BlendMode::DestAtop |
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BlendMode::Multiply |
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BlendMode::Multiply |
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BlendMode::Screen |
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BlendMode::Screen |
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BlendMode::HardLight |
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BlendMode::HardLight |
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@ -1497,6 +1558,7 @@ impl BlendModeExt for BlendMode {
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#[derive(Clone, Copy, Debug, PartialEq)]
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#[derive(Clone, Copy, Debug, PartialEq)]
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pub(crate) enum BlendModeProgram {
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pub(crate) enum BlendModeProgram {
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Regular,
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Regular,
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PorterDuff,
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Overlay,
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Overlay,
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DodgeBurn,
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DodgeBurn,
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HSL,
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HSL,
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@ -1514,6 +1576,10 @@ impl BlendModeProgram {
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BlendMode::Lighter |
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BlendMode::Lighter |
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BlendMode::Lighten |
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BlendMode::Lighten |
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BlendMode::Darken => BlendModeProgram::Regular,
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BlendMode::Darken => BlendModeProgram::Regular,
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BlendMode::SrcIn |
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BlendMode::DestIn |
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BlendMode::SrcOut |
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BlendMode::DestAtop => BlendModeProgram::PorterDuff,
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BlendMode::Multiply |
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BlendMode::Multiply |
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BlendMode::Screen |
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BlendMode::Screen |
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BlendMode::HardLight |
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BlendMode::HardLight |
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@ -1530,6 +1596,7 @@ impl BlendModeProgram {
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pub(crate) fn needs_readable_framebuffer(self) -> bool {
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pub(crate) fn needs_readable_framebuffer(self) -> bool {
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match self {
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match self {
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BlendModeProgram::Regular => false,
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BlendModeProgram::Regular => false,
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BlendModeProgram::PorterDuff |
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BlendModeProgram::Overlay |
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BlendModeProgram::Overlay |
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BlendModeProgram::DodgeBurn |
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BlendModeProgram::DodgeBurn |
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BlendModeProgram::HSL => true,
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BlendModeProgram::HSL => true,
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@ -450,6 +450,31 @@ impl<D> CopyTileProgram<D> where D: Device {
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}
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}
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}
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}
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pub struct AlphaTilePorterDuffProgram<D> where D: Device {
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pub alpha_tile_program: AlphaTileProgram<D>,
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pub dest_uniform: D::Uniform,
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pub dest_factor_uniform: D::Uniform,
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pub src_factor_uniform: D::Uniform,
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}
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impl<D> AlphaTilePorterDuffProgram<D> where D: Device {
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pub fn new(device: &D, resources: &dyn ResourceLoader) -> AlphaTilePorterDuffProgram<D> {
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let alpha_tile_program =
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AlphaTileProgram::from_fragment_shader_name(device,
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resources,
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"tile_alpha_porterduff");
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let dest_uniform = device.get_uniform(&alpha_tile_program.program, "Dest");
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let dest_factor_uniform = device.get_uniform(&alpha_tile_program.program, "DestFactor");
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let src_factor_uniform = device.get_uniform(&alpha_tile_program.program, "SrcFactor");
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AlphaTilePorterDuffProgram {
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alpha_tile_program,
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dest_uniform,
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dest_factor_uniform,
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src_factor_uniform,
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}
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}
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}
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pub struct AlphaTileHSLProgram<D> where D: Device {
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pub struct AlphaTileHSLProgram<D> where D: Device {
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pub alpha_tile_program: AlphaTileProgram<D>,
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pub alpha_tile_program: AlphaTileProgram<D>,
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pub dest_uniform: D::Uniform,
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pub dest_uniform: D::Uniform,
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@ -0,0 +1,96 @@
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#version {{version}}
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// Automatically generated from files in pathfinder/shaders/. Do not edit!
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|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
#extension GL_GOOGLE_include_directive : enable
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
precision highp float;
|
||||||
|
|
||||||
|
uniform int uDestFactor;
|
||||||
|
uniform int uSrcFactor;
|
||||||
|
|
||||||
|
out vec4 oFragColor;
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
uniform sampler2D uStencilTexture;
|
||||||
|
uniform sampler2D uPaintTexture;
|
||||||
|
uniform sampler2D uDest;
|
||||||
|
uniform vec2 uFramebufferSize;
|
||||||
|
|
||||||
|
in vec2 vColorTexCoord;
|
||||||
|
in vec2 vMaskTexCoord;
|
||||||
|
|
||||||
|
|
||||||
|
vec4 sampleSrcColor(){
|
||||||
|
float coverage = texture(uStencilTexture, vMaskTexCoord). r;
|
||||||
|
vec4 srcRGBA = texture(uPaintTexture, vColorTexCoord);
|
||||||
|
return vec4(srcRGBA . rgb, srcRGBA . a * coverage);
|
||||||
|
}
|
||||||
|
|
||||||
|
vec4 sampleDestColor(){
|
||||||
|
vec2 destTexCoord = gl_FragCoord . xy / uFramebufferSize;
|
||||||
|
return texture(uDest, destTexCoord);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
vec4 blendColors(vec4 destRGBA, vec4 srcRGBA, vec3 blendedRGB){
|
||||||
|
return vec4(srcRGBA . a *(1.0 - destRGBA . a)* srcRGBA . rgb +
|
||||||
|
srcRGBA . a * destRGBA . a * blendedRGB +
|
||||||
|
(1.0 - srcRGBA . a)* destRGBA . a * destRGBA . rgb,
|
||||||
|
1.0);
|
||||||
|
}
|
||||||
|
|
||||||
|
vec3 select3(bvec3 cond, vec3 a, vec3 b){
|
||||||
|
return vec3(cond . x ? a . x : b . x, cond . y ? a . y : b . y, cond . z ? a . z : b . z);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
vec4 getFactor(int factor, vec4 destRGBA, vec4 srcRGBA){
|
||||||
|
if(factor == 0)
|
||||||
|
return vec4(0.0);
|
||||||
|
if(factor == 1)
|
||||||
|
return vec4(destRGBA . a);
|
||||||
|
if(factor == 2)
|
||||||
|
return vec4(srcRGBA . a);
|
||||||
|
return vec4(1.0 - destRGBA . a);
|
||||||
|
}
|
||||||
|
|
||||||
|
void main(){
|
||||||
|
vec4 srcRGBA = sampleSrcColor();
|
||||||
|
vec4 destRGBA = sampleDestColor();
|
||||||
|
|
||||||
|
vec4 destFactor = getFactor(uDestFactor, destRGBA, srcRGBA);
|
||||||
|
vec4 srcFactor = getFactor(uSrcFactor, destRGBA, srcRGBA);
|
||||||
|
|
||||||
|
vec4 blended = destFactor * destRGBA * vec4(destRGBA . aaa, 1.0)+
|
||||||
|
srcFactor * srcRGBA * vec4(srcRGBA . aaa, 1.0);
|
||||||
|
oFragColor = blended;
|
||||||
|
}
|
||||||
|
|
|
@ -0,0 +1,80 @@
|
||||||
|
// Automatically generated from files in pathfinder/shaders/. Do not edit!
|
||||||
|
#pragma clang diagnostic ignored "-Wmissing-prototypes"
|
||||||
|
|
||||||
|
#include <metal_stdlib>
|
||||||
|
#include <simd/simd.h>
|
||||||
|
|
||||||
|
using namespace metal;
|
||||||
|
|
||||||
|
struct spvDescriptorSetBuffer0
|
||||||
|
{
|
||||||
|
texture2d<float> uStencilTexture [[id(0)]];
|
||||||
|
sampler uStencilTextureSmplr [[id(1)]];
|
||||||
|
texture2d<float> uPaintTexture [[id(2)]];
|
||||||
|
sampler uPaintTextureSmplr [[id(3)]];
|
||||||
|
constant float2* uFramebufferSize [[id(4)]];
|
||||||
|
texture2d<float> uDest [[id(5)]];
|
||||||
|
sampler uDestSmplr [[id(6)]];
|
||||||
|
constant int* uDestFactor [[id(7)]];
|
||||||
|
constant int* uSrcFactor [[id(8)]];
|
||||||
|
};
|
||||||
|
|
||||||
|
struct main0_out
|
||||||
|
{
|
||||||
|
float4 oFragColor [[color(0)]];
|
||||||
|
};
|
||||||
|
|
||||||
|
struct main0_in
|
||||||
|
{
|
||||||
|
float2 vColorTexCoord [[user(locn0)]];
|
||||||
|
float2 vMaskTexCoord [[user(locn1)]];
|
||||||
|
};
|
||||||
|
|
||||||
|
float4 sampleSrcColor(thread texture2d<float> uStencilTexture, thread const sampler uStencilTextureSmplr, thread float2& vMaskTexCoord, thread texture2d<float> uPaintTexture, thread const sampler uPaintTextureSmplr, thread float2& vColorTexCoord)
|
||||||
|
{
|
||||||
|
float coverage = uStencilTexture.sample(uStencilTextureSmplr, vMaskTexCoord).x;
|
||||||
|
float4 srcRGBA = uPaintTexture.sample(uPaintTextureSmplr, vColorTexCoord);
|
||||||
|
return float4(srcRGBA.xyz, srcRGBA.w * coverage);
|
||||||
|
}
|
||||||
|
|
||||||
|
float4 sampleDestColor(thread float4& gl_FragCoord, thread float2 uFramebufferSize, thread texture2d<float> uDest, thread const sampler uDestSmplr)
|
||||||
|
{
|
||||||
|
float2 destTexCoord = gl_FragCoord.xy / uFramebufferSize;
|
||||||
|
return uDest.sample(uDestSmplr, destTexCoord);
|
||||||
|
}
|
||||||
|
|
||||||
|
float4 getFactor(thread const int& factor, thread const float4& destRGBA, thread const float4& srcRGBA)
|
||||||
|
{
|
||||||
|
if (factor == 0)
|
||||||
|
{
|
||||||
|
return float4(0.0);
|
||||||
|
}
|
||||||
|
if (factor == 1)
|
||||||
|
{
|
||||||
|
return float4(destRGBA.w);
|
||||||
|
}
|
||||||
|
if (factor == 2)
|
||||||
|
{
|
||||||
|
return float4(srcRGBA.w);
|
||||||
|
}
|
||||||
|
return float4(1.0 - destRGBA.w);
|
||||||
|
}
|
||||||
|
|
||||||
|
fragment main0_out main0(main0_in in [[stage_in]], constant spvDescriptorSetBuffer0& spvDescriptorSet0 [[buffer(0)]], float4 gl_FragCoord [[position]])
|
||||||
|
{
|
||||||
|
main0_out out = {};
|
||||||
|
float4 srcRGBA = sampleSrcColor(spvDescriptorSet0.uStencilTexture, spvDescriptorSet0.uStencilTextureSmplr, in.vMaskTexCoord, spvDescriptorSet0.uPaintTexture, spvDescriptorSet0.uPaintTextureSmplr, in.vColorTexCoord);
|
||||||
|
float4 destRGBA = sampleDestColor(gl_FragCoord, (*spvDescriptorSet0.uFramebufferSize), spvDescriptorSet0.uDest, spvDescriptorSet0.uDestSmplr);
|
||||||
|
int param = (*spvDescriptorSet0.uDestFactor);
|
||||||
|
float4 param_1 = destRGBA;
|
||||||
|
float4 param_2 = srcRGBA;
|
||||||
|
float4 destFactor = getFactor(param, param_1, param_2);
|
||||||
|
int param_3 = (*spvDescriptorSet0.uSrcFactor);
|
||||||
|
float4 param_4 = destRGBA;
|
||||||
|
float4 param_5 = srcRGBA;
|
||||||
|
float4 srcFactor = getFactor(param_3, param_4, param_5);
|
||||||
|
float4 blended = ((destFactor * destRGBA) * float4(destRGBA.www, 1.0)) + ((srcFactor * srcRGBA) * float4(srcRGBA.www, 1.0));
|
||||||
|
out.oFragColor = blended;
|
||||||
|
return out;
|
||||||
|
}
|
||||||
|
|
|
@ -26,6 +26,7 @@ SHADERS=\
|
||||||
tile_alpha_dodgeburn.fs.glsl \
|
tile_alpha_dodgeburn.fs.glsl \
|
||||||
tile_alpha_hsl.fs.glsl \
|
tile_alpha_hsl.fs.glsl \
|
||||||
tile_alpha_overlay.fs.glsl \
|
tile_alpha_overlay.fs.glsl \
|
||||||
|
tile_alpha_porterduff.fs.glsl \
|
||||||
tile_copy.fs.glsl \
|
tile_copy.fs.glsl \
|
||||||
tile_copy.vs.glsl \
|
tile_copy.vs.glsl \
|
||||||
tile_solid.fs.glsl \
|
tile_solid.fs.glsl \
|
||||||
|
|
|
@ -0,0 +1,51 @@
|
||||||
|
#version 330
|
||||||
|
|
||||||
|
// pathfinder/shaders/tile_alpha_porterduff.fs.glsl
|
||||||
|
//
|
||||||
|
// Copyright © 2020 The Pathfinder Project Developers.
|
||||||
|
//
|
||||||
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||||||
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
||||||
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||||||
|
// option. This file may not be copied, modified, or distributed
|
||||||
|
// except according to those terms.
|
||||||
|
|
||||||
|
// Porter-Duff blend modes not supported by the standard GPU blender.
|
||||||
|
|
||||||
|
#extension GL_GOOGLE_include_directive : enable
|
||||||
|
|
||||||
|
#define PORTER_DUFF_FACTOR_ZERO 0
|
||||||
|
#define PORTER_DUFF_FACTOR_DEST_ALPHA 1
|
||||||
|
#define PORTER_DUFF_FACTOR_SRC_ALPHA 2
|
||||||
|
#define PORTER_DUFF_FACTOR_ONE_MINUS_DEST_ALPHA 3
|
||||||
|
|
||||||
|
precision highp float;
|
||||||
|
|
||||||
|
uniform int uDestFactor;
|
||||||
|
uniform int uSrcFactor;
|
||||||
|
|
||||||
|
out vec4 oFragColor;
|
||||||
|
|
||||||
|
#include "tile_alpha_sample.inc.glsl"
|
||||||
|
|
||||||
|
vec4 getFactor(int factor, vec4 destRGBA, vec4 srcRGBA) {
|
||||||
|
if (factor == PORTER_DUFF_FACTOR_ZERO)
|
||||||
|
return vec4(0.0);
|
||||||
|
if (factor == PORTER_DUFF_FACTOR_DEST_ALPHA)
|
||||||
|
return vec4(destRGBA.a);
|
||||||
|
if (factor == PORTER_DUFF_FACTOR_SRC_ALPHA)
|
||||||
|
return vec4(srcRGBA.a);
|
||||||
|
return vec4(1.0 - destRGBA.a);
|
||||||
|
}
|
||||||
|
|
||||||
|
void main() {
|
||||||
|
vec4 srcRGBA = sampleSrcColor();
|
||||||
|
vec4 destRGBA = sampleDestColor();
|
||||||
|
|
||||||
|
vec4 destFactor = getFactor(uDestFactor, destRGBA, srcRGBA);
|
||||||
|
vec4 srcFactor = getFactor(uSrcFactor, destRGBA, srcRGBA);
|
||||||
|
|
||||||
|
vec4 blended = destFactor * destRGBA * vec4(destRGBA.aaa, 1.0) +
|
||||||
|
srcFactor * srcRGBA * vec4(srcRGBA.aaa, 1.0);
|
||||||
|
oFragColor = blended;
|
||||||
|
}
|
Loading…
Reference in New Issue