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gpu: fix opacity layer rendering on OpenGL

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Fixes: https://todo.sr.ht/~eliasnaur/gio/536
Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2023-10-01 21:00:59 +00:00
parent 27193ae8e8
commit 526db27c75
4 changed files with 23 additions and 14 deletions
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gpu/gpu.go
+12 -7
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@@ -297,7 +297,8 @@ type blitUniforms struct {
uvTransformR1 [4]float32
uvTransformR2 [4]float32
opacity float32
_ [3]float32
fbo float32
_ [2]float32
}
type colorUniforms struct {
@@ -429,7 +430,7 @@ func (g *gpu) frame(target RenderTarget) error {
}
g.ctx.BeginRenderPass(defFBO, d)
g.ctx.Viewport(0, 0, viewport.X, viewport.Y)
g.renderer.drawOps(g.cache, image.Point{}, g.renderer.blitter.viewport, g.drawOps.imageOps)
g.renderer.drawOps(g.cache, false, image.Point{}, g.renderer.blitter.viewport, g.drawOps.imageOps)
g.coverTimer.end()
g.ctx.EndRenderPass()
g.cleanupTimer.begin()
@@ -846,7 +847,7 @@ func (r *renderer) drawLayers(cache *resourceCache, layers []opacityLayer, ops [
}
r.ctx.Viewport(v.Min.X, v.Min.Y, v.Max.X, v.Max.Y)
f := r.layerFBOs.fbos[fbo]
r.drawOps(cache, l.clip.Min.Mul(-1), l.clip.Size(), ops[l.opStart:l.opEnd])
r.drawOps(cache, true, l.clip.Min.Mul(-1), l.clip.Size(), ops[l.opStart:l.opEnd])
sr := f32.FRect(v)
uvScale, uvOffset := texSpaceTransform(sr, f.size)
uvTrans := f32.Affine2D{}.Scale(f32.Point{}, uvScale).Offset(uvOffset)
@@ -1212,7 +1213,7 @@ func (r *renderer) prepareDrawOps(cache *resourceCache, ops []imageOp) {
}
}
func (r *renderer) drawOps(cache *resourceCache, opOff image.Point, viewport image.Point, ops []imageOp) {
func (r *renderer) drawOps(cache *resourceCache, isFBO bool, opOff image.Point, viewport image.Point, ops []imageOp) {
var coverTex driver.Texture
for i := 0; i < len(ops); i++ {
img := ops[i]
@@ -1231,7 +1232,7 @@ func (r *renderer) drawOps(cache *resourceCache, opOff image.Point, viewport ima
p := r.blitter.pipelines[m.material]
r.ctx.BindPipeline(p.pipeline)
r.ctx.BindVertexBuffer(r.blitter.quadVerts, 0)
r.blitter.blit(m.material, m.color, m.color1, m.color2, scale, off, m.opacity, m.uvTrans)
r.blitter.blit(m.material, isFBO, m.color, m.color1, m.color2, scale, off, m.opacity, m.uvTrans)
continue
case clipTypePath:
fbo = r.pather.stenciler.cover(img.place.Idx)
@@ -1250,11 +1251,11 @@ func (r *renderer) drawOps(cache *resourceCache, opOff image.Point, viewport ima
p := r.pather.coverer.pipelines[m.material]
r.ctx.BindPipeline(p.pipeline)
r.ctx.BindVertexBuffer(r.blitter.quadVerts, 0)
r.pather.cover(m.material, m.color, m.color1, m.color2, scale, off, m.uvTrans, coverScale, coverOff)
r.pather.cover(m.material, isFBO, m.color, m.color1, m.color2, scale, off, m.uvTrans, coverScale, coverOff)
}
}
func (b *blitter) blit(mat materialType, col f32color.RGBA, col1, col2 f32color.RGBA, scale, off f32.Point, opacity float32, uvTrans f32.Affine2D) {
func (b *blitter) blit(mat materialType, fbo bool, col f32color.RGBA, col1, col2 f32color.RGBA, scale, off f32.Point, opacity float32, uvTrans f32.Affine2D) {
p := b.pipelines[mat]
b.ctx.BindPipeline(p.pipeline)
var uniforms *blitUniforms
@@ -1276,6 +1277,10 @@ func (b *blitter) blit(mat materialType, col f32color.RGBA, col1, col2 f32color.
uniforms.uvTransformR1 = [4]float32{t1, t2, t3, 0}
uniforms.uvTransformR2 = [4]float32{t4, t5, t6, 0}
}
uniforms.fbo = 0
if fbo {
uniforms.fbo = 1
}
uniforms.opacity = opacity
uniforms.transform = [4]float32{scale.X, scale.Y, off.X, off.Y}
p.UploadUniforms(b.ctx)