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TINYGL: Optimized color keying and fixed a bug with conversion from different types of pixel formats..

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This commit is contained in:
Stefano Musumeci
2014-07-18 18:50:02 +02:00
parent 2c697350a9
commit d5b137b507
1 changed files with 9 additions and 7 deletions
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graphics/tinygl/zblit.cpp
+9 -7
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@@ -18,16 +18,18 @@ public:
_surface.create(surface.w, surface.h, textureFormat);
Graphics::PixelBuffer buffer(surface.format, (byte *)surface.getPixels());
Graphics::PixelBuffer dataBuffer(textureFormat, (byte *)_surface.getPixels());
for (int x = 0; x < surface.w; x++) {
for (int y = 0; y < surface.h; y++) {
uint32 pixel = buffer.getValueAt(y * surface.w + x);
if (applyColorKey && pixel == colorKey) {
dataBuffer.setPixelAt(y * surface.w + x, 0, 255, 255, 255); // Color keyed pixels become transparent white.
} else {
dataBuffer.setPixelAt(y * surface.w + x, pixel);
dataBuffer.copyBuffer(0, 0, surface.w * surface.h, buffer);
if (applyColorKey) {
for (int x = 0; x < surface.w; x++) {
for (int y = 0; y < surface.h; y++) {
uint32 pixel = dataBuffer.getValueAt(y * surface.w + x);
if (pixel == colorKey) {
dataBuffer.setPixelAt(y * surface.w + x, 0, 255, 255, 255); // Color keyed pixels become transparent white.
}
}
}
}
// Create opaque lines data.
// A line of pixels can not wrap more that one line of the image, since it would break
// blitting of bitmaps with a non-zero x position.