kiss-lang/lime
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

speed up copyPixels for c++

Browse Source
This commit is contained in:
Lars Doucet
2017-03-22 15:40:12 -05:00
committed by Joshua Granick
parent d21d1b6056
commit 75bdc7e248
3 changed files with 46 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
project/include/graphics/ImageBuffer.h
View File

@@ -20,6 +20,7 @@ namespace lime {
~ImageBuffer ();
void Blit (const unsigned char *data, int x, int y, int width, int height);
void BlitRow (const unsigned char *data, int sourcePosition, int destPosition, int sourceW, int destX, int destY);
void Resize (int width, int height, int bitsPerPixel = 32);
int Stride ();
value Value ();

18
project/src/graphics/ImageBuffer.cpp
View File

@@ -97,6 +97,24 @@ namespace lime {
}
void ImageBuffer::BlitRow (const unsigned char *data, int sourcePosition, int destPosition, int sourceW, int destX, int destY) {
if (destX < 0 || destX + sourceW > this->width || destY < 0 || destY + 1 > this->height) {
return;
}
int stride = (sourceW * (((bitsPerPixel + 3) & ~0x3) >> 3));
unsigned char *bytes = this->data->Data ();
memcpy (&bytes[destPosition], &data[sourcePosition], stride);
}
void ImageBuffer::Resize (int width, int height, int bitsPerPixel) {
this->bitsPerPixel = bitsPerPixel;

37
project/src/graphics/utils/ImageDataUtil.cpp
View File

@@ -118,26 +118,43 @@ namespace lime {
PixelFormat sourceFormat = sourceImage->buffer->format;
PixelFormat destFormat = image->buffer->format;
bool sourcePremultiplied = sourceImage->buffer->premultiplied;
bool destPremultiplied = image->buffer->premultiplied;
int sourcePosition, destPosition;
RGBA sourcePixel;
bool sourcePremultiplied = sourceImage->buffer->premultiplied;
bool destPremultiplied = image->buffer->premultiplied;
if (!mergeAlpha || !sourceImage->buffer->transparent) {
for (int y = 0; y < destView.height; y++) {
if(sourceFormat == destFormat && sourcePremultiplied == destPremultiplied) {
sourcePosition = sourceView.Row (y);
destPosition = destView.Row (y);
for (int y = 0; y < destView.height; y++) {
sourcePosition = sourceView.Row (y);
destPosition = destView.Row (y);
image->buffer->BlitRow(sourceData, sourcePosition, destPosition, sourceView.width, destView.x, destView.y+y);
}
for (int x = 0; x < destView.width; x++) {
}
else {
for (int y = 0; y < destView.height; y++) {
sourcePixel.ReadUInt8 (sourceData, sourcePosition, sourceFormat, sourcePremultiplied);
sourcePixel.WriteUInt8 (destData, destPosition, destFormat, destPremultiplied);
sourcePosition = sourceView.Row (y);
destPosition = destView.Row (y);
sourcePosition += 4;
destPosition += 4;
for (int x = 0; x < destView.width; x++) {
sourcePixel.ReadUInt8 (sourceData, sourcePosition, sourceFormat, sourcePremultiplied);
sourcePixel.WriteUInt8 (destData, destPosition, destFormat, destPremultiplied);
sourcePosition += 4;
destPosition += 4;
}
}