thirdparty/scummvm
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OPENGL: Implement support for non CLUT8 cursor.

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Currently all the cursor data is converted to RGBA8888 to allow for
easy colorkeying.
This commit is contained in:
Johannes Schickel 2011-02-25 04:01:37 +01:00
parent 4f3a244f16
commit f1b16fe084
1 changed files with 43 additions and 2 deletions
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45
backends/graphics/opengl/opengl-graphics.cpp
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@ -754,6 +754,9 @@ void OpenGLGraphicsManager::refreshOverlay() {
void OpenGLGraphicsManager::refreshCursor() {
_cursorNeedsRedraw = false;
// Allocate a texture big enough for cursor
_cursorTexture->allocBuffer(_cursorState.w, _cursorState.h);
if (_cursorFormat.bytesPerPixel == 1) {
// Create a temporary RGBA8888 surface
byte *surface = new byte[_cursorState.w * _cursorState.h * 4];
@ -780,8 +783,46 @@ void OpenGLGraphicsManager::refreshCursor() {
dst += 4;
}
// Allocate a texture big enough for cursor
_cursorTexture->allocBuffer(_cursorState.w, _cursorState.h);
// Update the texture with new cursor
_cursorTexture->updateBuffer(surface, _cursorState.w * 4, 0, 0, _cursorState.w, _cursorState.h);
// Free the temp surface
delete[] surface;
} else {
// Create a temporary RGBA8888 surface
byte *surface = new byte[_cursorState.w * _cursorState.h * 4];
memset(surface, 0, _cursorState.w * _cursorState.h * 4);
// Convert the paletted cursor to RGBA8888
byte *dst = surface;
const bool gotNoAlpha = (_cursorFormat.aLoss == 8);
if (_cursorFormat.bytesPerPixel == 2) {
const uint16 *src = (uint16 *)_cursorData.pixels;
for (int i = 0; i < _cursorState.w * _cursorState.h; i++) {
// Check for keycolor
if (src[i] != _cursorKeyColor) {
_cursorFormat.colorToARGB(src[i], dst[3], dst[0], dst[1], dst[2]);
if (gotNoAlpha)
dst[3] = 255;
}
dst += 4;
}
} else if (_cursorFormat.bytesPerPixel == 4) {
const uint32 *src = (uint32 *)_cursorData.pixels;
for (int i = 0; i < _cursorState.w * _cursorState.h; i++) {
// Check for keycolor
if (src[i] != _cursorKeyColor) {
_cursorFormat.colorToARGB(src[i], dst[3], dst[0], dst[1], dst[2]);
if (gotNoAlpha)
dst[3] = 255;
}
dst += 4;
}
}
// Update the texture with new cursor
_cursorTexture->updateBuffer(surface, _cursorState.w * 4, 0, 0, _cursorState.w, _cursorState.h);