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add RgbaBitmap blending blit methods

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Gered 2023-03-25 19:09:01 -04:00
parent 050c2ac6e9
commit b38a4b55bc
1 changed files with 171 additions and 3 deletions
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174
ggdt/src/graphics/bitmap/rgb/blit.rs
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@ -1,6 +1,7 @@
use crate::graphics::bitmap::blit::clip_blit;
use crate::graphics::bitmap::blit::{clip_blit, per_pixel_blit, per_pixel_flipped_blit, per_pixel_rotozoom_blit};
use crate::graphics::bitmap::rgb::RgbaBitmap;
use crate::graphics::bitmapatlas::BitmapAtlas;
use crate::graphics::color::BlendFunction;
use crate::math::rect::Rect;
#[derive(Clone, PartialEq)]
@ -49,9 +50,156 @@ pub enum RgbaBlitMethod {
scale_y: f32,
transparent_color: u32,
},
SolidBlended(BlendFunction),
SolidFlippedBlended {
horizontal_flip: bool,
vertical_flip: bool,
blend: BlendFunction,
},
TransparentBlended {
transparent_color: u32,
blend: BlendFunction,
},
TransparentFlippedBlended {
transparent_color: u32,
horizontal_flip: bool,
vertical_flip: bool,
blend: BlendFunction,
},
RotoZoomBlended {
angle: f32,
scale_x: f32,
scale_y: f32,
blend: BlendFunction,
},
RotoZoomTransparentBlended {
angle: f32,
scale_x: f32,
scale_y: f32,
transparent_color: u32,
blend: BlendFunction,
},
}
impl RgbaBitmap {
pub unsafe fn solid_blended_blit(
&mut self,
src: &Self,
src_region: &Rect,
dest_x: i32,
dest_y: i32,
blend: BlendFunction,
) {
per_pixel_blit(
self, src, src_region, dest_x, dest_y,
|src_pixels, dest_pixels| {
*dest_pixels = blend.blend(*src_pixels, *dest_pixels);
},
);
}
pub unsafe fn solid_flipped_blended_blit(
&mut self,
src: &Self,
src_region: &Rect,
dest_x: i32,
dest_y: i32,
horizontal_flip: bool,
vertical_flip: bool,
blend: BlendFunction,
) {
per_pixel_flipped_blit(
self, src, src_region, dest_x, dest_y, horizontal_flip, vertical_flip,
|src_pixels, dest_pixels| {
*dest_pixels = blend.blend(*src_pixels, *dest_pixels);
},
);
}
pub unsafe fn transparent_blended_blit(
&mut self,
src: &Self,
src_region: &Rect,
dest_x: i32,
dest_y: i32,
transparent_color: u32,
blend: BlendFunction,
) {
per_pixel_blit(
self, src, src_region, dest_x, dest_y,
|src_pixels, dest_pixels| {
if *src_pixels != transparent_color {
*dest_pixels = blend.blend(*src_pixels, *dest_pixels);
}
},
);
}
pub unsafe fn transparent_flipped_blended_blit(
&mut self,
src: &Self,
src_region: &Rect,
dest_x: i32,
dest_y: i32,
transparent_color: u32,
horizontal_flip: bool,
vertical_flip: bool,
blend: BlendFunction,
) {
per_pixel_flipped_blit(
self, src, src_region, dest_x, dest_y, horizontal_flip, vertical_flip,
|src_pixels, dest_pixels| {
if *src_pixels != transparent_color {
*dest_pixels = blend.blend(*src_pixels, *dest_pixels);
}
},
);
}
pub unsafe fn rotozoom_blended_blit(
&mut self,
src: &Self,
src_region: &Rect,
dest_x: i32,
dest_y: i32,
angle: f32,
scale_x: f32,
scale_y: f32,
blend: BlendFunction,
) {
per_pixel_rotozoom_blit(
self, src, src_region, dest_x, dest_y, angle, scale_x, scale_y,
|src_pixel, dest_bitmap, draw_x, draw_y| {
if let Some(dest_pixel) = dest_bitmap.get_pixel(draw_x, draw_y) {
dest_bitmap.set_pixel(draw_x, draw_y, blend.blend(src_pixel, dest_pixel))
}
},
);
}
pub unsafe fn rotozoom_transparent_blended_blit(
&mut self,
src: &Self,
src_region: &Rect,
dest_x: i32,
dest_y: i32,
angle: f32,
scale_x: f32,
scale_y: f32,
transparent_color: u32,
blend: BlendFunction,
) {
per_pixel_rotozoom_blit(
self, src, src_region, dest_x, dest_y, angle, scale_x, scale_y,
|src_pixel, dest_bitmap, draw_x, draw_y| {
if transparent_color != src_pixel {
if let Some(dest_pixel) = dest_bitmap.get_pixel(draw_x, draw_y) {
dest_bitmap.set_pixel(draw_x, draw_y, blend.blend(src_pixel, dest_pixel))
}
}
},
);
}
pub fn blit_region(
&mut self,
method: RgbaBlitMethod,
@ -71,12 +219,16 @@ impl RgbaBitmap {
match method {
// rotozoom blits internally clip per-pixel right now ... and regardless, the normal
// clip_blit() function wouldn't handle a rotozoom blit destination region anyway ...
RotoZoom { .. } => {}
RotoZoomTransparent { .. } => {}
RotoZoom { .. } => {},
RotoZoomBlended { .. } => {},
RotoZoomTransparent { .. } => {},
RotoZoomTransparentBlended { .. } => {},
// set axis flip arguments
SolidFlipped { horizontal_flip, vertical_flip, .. } |
SolidFlippedBlended { horizontal_flip, vertical_flip, .. } |
TransparentFlipped { horizontal_flip, vertical_flip, .. } |
TransparentFlippedBlended { horizontal_flip, vertical_flip, .. } |
TransparentFlippedSingle { horizontal_flip, vertical_flip, .. } => {
if !clip_blit(
self.clip_region(),
@ -144,6 +296,22 @@ impl RgbaBitmap {
RotoZoomTransparent { angle, scale_x, scale_y, transparent_color } => {
self.rotozoom_transparent_blit(src, src_region, dest_x, dest_y, angle, scale_x, scale_y, transparent_color)
}
SolidBlended(blend) => self.solid_blended_blit(src, src_region, dest_x, dest_y, blend),
SolidFlippedBlended { horizontal_flip, vertical_flip, blend } => {
self.solid_flipped_blended_blit(src, src_region, dest_x, dest_y, horizontal_flip, vertical_flip, blend)
},
TransparentBlended { transparent_color, blend } => {
self.transparent_blended_blit(src, src_region, dest_x, dest_y, transparent_color, blend)
},
TransparentFlippedBlended { transparent_color, horizontal_flip, vertical_flip, blend } => {
self.transparent_flipped_blended_blit(src, src_region, dest_x, dest_y, transparent_color, horizontal_flip, vertical_flip, blend)
},
RotoZoomBlended { angle, scale_x, scale_y, blend } => {
self.rotozoom_blended_blit(src, src_region, dest_x, dest_y, angle, scale_x, scale_y, blend)
},
RotoZoomTransparentBlended { angle, scale_x, scale_y, transparent_color, blend } => {
self.rotozoom_transparent_blended_blit(src, src_region, dest_x, dest_y, angle, scale_x, scale_y, transparent_color, blend)
},
}
}