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authorFabio Battaglia2010-01-11 09:34:20 +0000
committerFabio Battaglia2010-01-11 09:34:20 +0000
commit5b043140ff0fdb621cde86c173621eab1f4556c8 (patch)
tree5cdddb3627c7e5cb4455ec0383f6c9bcbc4ed87c /backends/platform
parent009b86e8cba47fa60213a84a7456671c35c553c5 (diff)
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N64: a few optimizations in framebuffer drawing code
svn-id: r47242
Diffstat (limited to 'backends/platform')
-rw-r--r--backends/platform/n64/Makefile8
-rw-r--r--backends/platform/n64/osys_n64_base.cpp26
2 files changed, 23 insertions, 11 deletions
diff --git a/backends/platform/n64/Makefile b/backends/platform/n64/Makefile
index a016e39233..ffc785ea06 100644
--- a/backends/platform/n64/Makefile
+++ b/backends/platform/n64/Makefile
@@ -17,11 +17,11 @@ RANLIB = $(GCCN64PREFIX)ranlib
DEFINES += -D__N64__ -DLIMIT_FPS -DNONSTANDARD_PORT -DDISABLE_DEFAULT_SAVEFILEMANAGER -DDISABLE_TEXT_CONSOLE -DDISABLE_COMMAND_LINE -DDISABLE_FANCY_THEMES -DDISABLE_DOSBOX_OPL -DENABLE_VKEYBD -DUSE_ZLIB
LIBS += -lpakfs -lframfs -ln64 -ln64utils -lromfs
-DEFINES += -D_ENABLE_DEBUG_
+#DEFINES += -D_ENABLE_DEBUG_
#DEFINES += -D_NORMAL_N64_DELAY_
USE_LIBMAD=0
-USE_LIBOGG=1
+USE_LIBOGG=0
ifeq ($(USE_LIBMAD),1)
DEFINES += -DUSE_MAD
@@ -53,7 +53,7 @@ USE_RGB_COLOR=0
ENABLED=STATIC_PLUGIN
-ENABLE_SCUMM=$(ENABLED)
+#ENABLE_SCUMM=$(ENABLED)
#ENABLE_SKY=$(ENABLED)
#ENABLE_SCI=$(ENABLED)
#ENABLE_GOB=$(ENABLED)
@@ -64,6 +64,8 @@ ENABLE_SCUMM=$(ENABLED)
#ENABLE_QUEEN = $(ENABLED)
#ENABLE_MADE = $(ENABLED)
#ENABLE_SAGA = $(ENABLED)
+#ENABLE_TEENAGENT = $(ENABLED)
+#ENABLE_DRACI = $(ENABLED)
OBJS := nintendo64.o osys_n64_base.o osys_n64_events.o osys_n64_utilities.o pakfs_save_manager.o framfs_save_manager.o
diff --git a/backends/platform/n64/osys_n64_base.cpp b/backends/platform/n64/osys_n64_base.cpp
index 10c943b2cf..22f2df2df3 100644
--- a/backends/platform/n64/osys_n64_base.cpp
+++ b/backends/platform/n64/osys_n64_base.cpp
@@ -72,7 +72,7 @@ OSystem_N64::OSystem_N64() {
_frameBufferWidth = 340;
// Pixels to skip
- _offscrPixels = 15;
+ _offscrPixels = 16;
// Video clock
_viClockRate = VI_NTSC_CLOCK;
@@ -254,7 +254,7 @@ void OSystem_N64::switchGraphicModeId(int mode) {
_frameBufferWidth = 340;
_screenWidth = 320;
_screenHeight = 240;
- _offscrPixels = 15;
+ _offscrPixels = 16;
_graphicMode = OVERS_PAL_340X240;
enableAudioPlayback();
break;
@@ -280,7 +280,7 @@ void OSystem_N64::switchGraphicModeId(int mode) {
_frameBufferWidth = 340;
_screenWidth = 320;
_screenHeight = 240;
- _offscrPixels = 15;
+ _offscrPixels = 16;
_graphicMode = OVERS_MPAL_340X240;
enableAudioPlayback();
break;
@@ -307,7 +307,7 @@ void OSystem_N64::switchGraphicModeId(int mode) {
_frameBufferWidth = 340;
_screenWidth = 320;
_screenHeight = 240;
- _offscrPixels = 15;
+ _offscrPixels = 16;
_graphicMode = OVERS_NTSC_340X240;
enableAudioPlayback();
break;
@@ -470,6 +470,7 @@ void OSystem_N64::updateScreen() {
uint8 skip_lines = (_screenHeight - _gameHeight) / 4;
uint8 skip_pixels = (_screenWidth - _gameWidth) / 2; // Center horizontally the image
+ skip_pixels -= (skip_pixels % 8); // To keep aligned memory access
if (_dirtyPalette)
rebuildOffscreenGameBuffer();
@@ -479,7 +480,7 @@ void OSystem_N64::updateScreen() {
uint16 *overlay_framebuffer = (uint16*)_dc->conf.framebuffer; // Current screen framebuffer
uint16 *game_framebuffer = overlay_framebuffer + (_frameBufferWidth * skip_lines * 2); // Skip some lines to center the image vertically
- uint16 currentHeight;
+ uint16 currentHeight, currentWidth;
uint16 *tmpDst;
uint16 *tmpSrc;
@@ -488,7 +489,11 @@ void OSystem_N64::updateScreen() {
tmpDst = game_framebuffer;
tmpSrc = _offscreen_hic + (_shakeOffset * _screenWidth);
for (currentHeight = _shakeOffset; currentHeight < _gameHeight; currentHeight++) {
- memcpy((tmpDst + skip_pixels + _offscrPixels), tmpSrc, _screenWidth * 2);
+ uint64 *game_dest = (uint64*)(tmpDst + skip_pixels + _offscrPixels);
+ uint64 *game_src = (uint64*)tmpSrc;
+ for (currentWidth = 0; currentWidth < _gameWidth; currentWidth += 4) {
+ *game_dest++ = *game_src++;
+ }
tmpDst += _frameBufferWidth;
tmpSrc += _screenWidth;
}
@@ -502,7 +507,11 @@ void OSystem_N64::updateScreen() {
tmpDst = overlay_framebuffer;
tmpSrc = _overlayBuffer;
for (currentHeight = 0; currentHeight < _overlayHeight; currentHeight++) {
- memcpy((tmpDst + _offscrPixels), tmpSrc, _overlayWidth * 2);
+ uint64 *over_dest = (uint64*)(tmpDst + _offscrPixels);
+ uint64 *over_src = (uint64*)tmpSrc;
+ for (currentWidth = 0; currentWidth < _overlayWidth; currentWidth += 4) {
+ *over_dest++ = *over_src++;
+ }
tmpDst += _frameBufferWidth;
tmpSrc += _overlayWidth;
}
@@ -511,10 +520,11 @@ void OSystem_N64::updateScreen() {
// Draw mouse cursor
if ((_mouseVisible || _overlayVisible) && _cursorHeight > 0 && _cursorWidth > 0) {
uint16 *mouse_framebuffer;
- uint16 horiz_pix_skip = 0;
+ uint16 horiz_pix_skip;
if (_overlayVisible) {
mouse_framebuffer = overlay_framebuffer;
+ horiz_pix_skip = 0;
} else {
mouse_framebuffer = game_framebuffer;
horiz_pix_skip = skip_pixels;