diff options
author | Fabio Battaglia | 2010-01-12 21:18:28 +0000 |
---|---|---|
committer | Fabio Battaglia | 2010-01-12 21:18:28 +0000 |
commit | 3138ac98ba76a4c18b9133112dae075297491956 (patch) | |
tree | 32cee2699e30bb49103e54e70197c3c7c063eb25 /backends/platform | |
parent | ac668291acf04128793cd8442e718b3e787fd25d (diff) | |
download | scummvm-rg350-3138ac98ba76a4c18b9133112dae075297491956.tar.gz scummvm-rg350-3138ac98ba76a4c18b9133112dae075297491956.tar.bz2 scummvm-rg350-3138ac98ba76a4c18b9133112dae075297491956.zip |
N64: some cleanup and optimization of video code
svn-id: r47282
Diffstat (limited to 'backends/platform')
-rw-r--r-- | backends/platform/n64/osys_n64_base.cpp | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/backends/platform/n64/osys_n64_base.cpp b/backends/platform/n64/osys_n64_base.cpp index f8c8a222bb..6f2be6baaf 100644 --- a/backends/platform/n64/osys_n64_base.cpp +++ b/backends/platform/n64/osys_n64_base.cpp @@ -356,24 +356,23 @@ void OSystem_N64::setPalette(const byte *colors, uint start, uint num) { void OSystem_N64::rebuildOffscreenGameBuffer(void) { // Regenerate hi-color offscreen buffer - uint32 two_col_hi; + uint64 four_col_hi; uint32 four_col_pal; - for (int h = 0; h < _gameHeight; h++) + + for (int h = 0; h < _gameHeight; h++) { for (int w = 0; w < _gameWidth; w += 4) { four_col_pal = *(uint32*)(_offscreen_pal + ((h * _screenWidth) + w)); - two_col_hi = 0; - two_col_hi = _screenPalette[((four_col_pal >> (8 * 3)) & 0xFF)] | (two_col_hi << (16 * 0)); - two_col_hi = _screenPalette[((four_col_pal >> (8 * 2)) & 0xFF)] | (two_col_hi << (16 * 1)); - - *(uint32*)(_offscreen_hic + (h * _screenWidth) + w + 0) = two_col_hi; - - two_col_hi = 0; - two_col_hi = _screenPalette[((four_col_pal >> (8 * 1)) & 0xFF)] | (two_col_hi << (16 * 0)); - two_col_hi = _screenPalette[((four_col_pal >> (8 * 0)) & 0xFF)] | (two_col_hi << (16 * 1)); + four_col_hi = 0; + four_col_hi |= (uint64)_screenPalette[((four_col_pal >> 24) & 0xFF)] << 48; + four_col_hi |= (uint64)_screenPalette[((four_col_pal >> 16) & 0xFF)] << 32; + four_col_hi |= (uint64)_screenPalette[((four_col_pal >> 8) & 0xFF)] << 16; + four_col_hi |= (uint64)_screenPalette[((four_col_pal >> 0) & 0xFF)] << 0; - *(uint32*)(_offscreen_hic + (h * _screenWidth) + w + 2) = two_col_hi; + // Save the converted pixels into hicolor buffer + *(uint64*)((_offscreen_hic) + (h * _screenWidth) + w) = four_col_hi; } + } } void OSystem_N64::rebuildOffscreenMouseBuffer(void) { @@ -511,6 +510,8 @@ void OSystem_N64::updateScreen() { for (currentHeight = _shakeOffset; currentHeight < _gameHeight; currentHeight++) { uint64 *game_dest = (uint64*)(tmpDst + skip_pixels + _offscrPixels); uint64 *game_src = (uint64*)tmpSrc; + + // With uint64 we copy 4 pixels at a time for (currentWidth = 0; currentWidth < _gameWidth; currentWidth += 4) { *game_dest++ = *game_src++; } @@ -529,6 +530,8 @@ void OSystem_N64::updateScreen() { for (currentHeight = 0; currentHeight < _overlayHeight; currentHeight++) { uint64 *over_dest = (uint64*)(tmpDst + _offscrPixels); uint64 *over_src = (uint64*)tmpSrc; + + // Copy 4 pixels at a time for (currentWidth = 0; currentWidth < _overlayWidth; currentWidth += 4) { *over_dest++ = *over_src++; } |