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semi opaque

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This commit is contained in:
Jorijn van der Graaf 2025-11-27 00:08:10 +01:00
commit 0329616148
6 changed files with 80 additions and 91 deletions
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56
implementations/Crafter.Graphics-Window_wayland.cpp
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@ -139,6 +139,7 @@ inline void blend_pixel_optimized(Pixel_BU8_GU8_RU8_AU8& dst, const Pixel_BU8_GU
if(src.a == 0) {
return;
}
float srcA = src.a / 255.0f;
float dstA = dst.a / 255.0f;
@ -173,26 +174,49 @@ void WindowWayland::RenderElement(Transform* transform) {
const Pixel_BU8_GU8_RU8_AU8* src_buffer = element->bufferScaled.data();
std::int_fast32_t src_width = element->scaled.width;
std::int_fast32_t src_height = element->scaled.height;
if (element->opaque) {
for (std::int_fast32_t y = dirty.top; y < dirty.bottom; y++) {
std::int_fast32_t src_y = y - element->scaled.y;
for (std::int_fast32_t x = dirty.left; x < dirty.right; x++) {
std::int_fast32_t src_x = x - element->scaled.x;
switch (element->opaque) {
case OpaqueType::FullyOpaque:
// For fully opaque, just copy pixels directly
for (std::int_fast32_t y = dirty.top; y < dirty.bottom; y++) {
std::int_fast32_t src_y = y - element->scaled.y;
framebuffer[y * width + x] = src_buffer[src_y * src_width + src_x];
for (std::int_fast32_t x = dirty.left; x < dirty.right; x++) {
std::int_fast32_t src_x = x - element->scaled.x;
framebuffer[y * width + x] = src_buffer[src_y * src_width + src_x];
}
}
}
} else {
for (std::int_fast32_t y = dirty.top; y < dirty.bottom; y++) {
std::int_fast32_t src_y = y - element->scaled.y;
break;
for (std::int_fast32_t x = dirty.left; x < dirty.right; x++) {
std::int_fast32_t src_x = x - element->scaled.x;
blend_pixel_optimized(framebuffer[y * width + x], src_buffer[src_y * src_width + src_x]);
case OpaqueType::SemiOpaque:
// For semi-opaque, we can avoid blending when alpha is 0 or 255
for (std::int_fast32_t y = dirty.top; y < dirty.bottom; y++) {
std::int_fast32_t src_y = y - element->scaled.y;
for (std::int_fast32_t x = dirty.left; x < dirty.right; x++) {
std::int_fast32_t src_x = x - element->scaled.x;
Pixel_BU8_GU8_RU8_AU8 src_pixel = src_buffer[src_y * src_width + src_x];
if (src_pixel.a == 0) {
continue;
}
framebuffer[y * width + x] = src_pixel;
}
}
}
break;
case OpaqueType::Transparent:
// For transparent, always perform blending
for (std::int_fast32_t y = dirty.top; y < dirty.bottom; y++) {
std::int_fast32_t src_y = y - element->scaled.y;
for (std::int_fast32_t x = dirty.left; x < dirty.right; x++) {
std::int_fast32_t src_x = x - element->scaled.x;
blend_pixel_optimized(framebuffer[y * width + x], src_buffer[src_y * src_width + src_x]);
}
}
break;
}
}