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ebiten: Merge DrawImage and DrawImageWithShader

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Updates #1168
This commit is contained in:
Hajime Hoshi 2020-07-23 17:08:33 +09:00
parent 283de9b847
commit 388e2623e8
1 changed files with 20 additions and 37 deletions
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57
image.go
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@ -205,7 +205,14 @@ func (i *Image) DrawImage(img *Image, options *DrawImageOptions) error {
sy1 := float32(bounds.Max.Y)
vs := graphics.QuadVertices(sx0, sy0, sx1, sy1, a, b, c, d, tx, ty, 1, 1, 1, 1, filter == driver.FilterScreen)
is := graphics.QuadIndices()
i.buffered.DrawTriangles([graphics.ShaderImageNum]*buffered.Image{img.buffered}, vs, is, options.ColorM.impl, mode, filter, driver.AddressUnsafe, driver.Region{}, nil, nil)
srcs := [graphics.ShaderImageNum]*buffered.Image{img.buffered}
if options.Shader == nil {
i.buffered.DrawTriangles(srcs, vs, is, options.ColorM.impl, mode, filter, driver.AddressUnsafe, driver.Region{}, nil, nil)
return nil
}
i.buffered.DrawTriangles(srcs, vs, is, nil, mode, driver.FilterNearest, driver.AddressUnsafe, driver.Region{}, options.Shader.shader, options.Uniforms)
return nil
}
@ -341,42 +348,6 @@ func (i *Image) DrawTriangles(vertices []Vertex, indices []uint16, img *Image, o
i.buffered.DrawTriangles([graphics.ShaderImageNum]*buffered.Image{img.buffered}, vs, is, options.ColorM.impl, mode, filter, driver.Address(options.Address), sr, nil, nil)
}
// DrawImageOptionsWithShaderOptions represents options for DrawImageOptionsWithShader
//
// This API is experimental.
type DrawImageWithShaderOptions struct {
// GeoM is a geometry matrix to draw.
// The default (zero) value is identify, which draws the rectangle at (0, 0).
GeoM GeoM
// CompositeMode is a composite mode to draw.
// The default (zero) value is regular alpha blending.
CompositeMode CompositeMode
// Uniforms is a set of uniform variables for the shader.
Uniforms []interface{}
}
// DrawImageWithShader draws the specified image with the specified shader.
//
// When the specified image is disposed, DrawImageWithShader panics.
//
// When the image i is disposed, DrawImageWithShader does nothing.
//
// This API is experimental.
func (i *Image) DrawImageWithShader(img *Image, shader *Shader, options *DrawImageWithShaderOptions) {
w, h := img.Size()
op := &DrawRectangleWithShaderOptions{
Images: [4]*Image{img},
}
if options != nil {
op.GeoM = options.GeoM
op.CompositeMode = options.CompositeMode
op.Uniforms = options.Uniforms
}
i.DrawRectangleWithShader(w, h, shader, op)
}
// DrawRectangleOptionsWithShaderOptions represents options for DrawRectangleOptionsWithShader
//
// This API is experimental.
@ -711,6 +682,8 @@ type DrawImageOptions struct {
// ColorM is a color matrix to draw.
// The default (zero) value is identity, which doesn't change any color.
//
// If Shader is not nil, ColorM is ignored.
ColorM ColorM
// CompositeMode is a composite mode to draw.
@ -727,8 +700,18 @@ type DrawImageOptions struct {
// FilterNearest is used.
// If either is FilterDefault and the other is not, the latter is used.
// Otherwise, Filter specified at DrawImageOptions is used.
//
// If Shader is not nil, Filter is ignored.
Filter Filter
// Shader is a shader.
Shader *Shader
// Uniforms is a set of uniform variables for the shader.
//
// Uniforms is used only when Shader is not nil.
Uniforms []interface{}
// Deprecated: (as of 1.5.0) Use SubImage instead.
ImageParts ImageParts