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lovr
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TextureData:paste;

This commit is contained in:
bjorn 2019-06-20 23:36:18 -07:00
parent 7ebee200ea
commit 9f3638b018
3 changed files with 30 additions and 0 deletions
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14
src/api/l_textureData.c
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@ -34,6 +34,19 @@ static int l_lovrTextureDataGetFormat(lua_State* L) {
return 1;
}
static int l_lovrTextureDataPaste(lua_State* L) {
TextureData* textureData = luax_checktype(L, 1, TextureData);
TextureData* source = luax_checktype(L, 2, TextureData);
uint32_t dx = luaL_optinteger(L, 3, 0);
uint32_t dy = luaL_optinteger(L, 4, 0);
uint32_t sx = luaL_optinteger(L, 5, 0);
uint32_t sy = luaL_optinteger(L, 6, 0);
uint32_t w = luaL_optinteger(L, 7, source->width);
uint32_t h = luaL_optinteger(L, 8, source->height);
lovrTextureDataPaste(textureData, source, dx, dy, sx, sy, w, h);
return 0;
}
static int l_lovrTextureDataGetPixel(lua_State* L) {
TextureData* textureData = luax_checktype(L, 1, TextureData);
int x = luaL_checkinteger(L, 2);
@ -72,6 +85,7 @@ const luaL_Reg lovrTextureData[] = {
{ "getHeight", l_lovrTextureDataGetHeight },
{ "getDimensions", l_lovrTextureDataGetDimensions },
{ "getFormat", l_lovrTextureDataGetFormat },
{ "paste", l_lovrTextureDataPaste },
{ "getPixel", l_lovrTextureDataGetPixel },
{ "setPixel", l_lovrTextureDataSetPixel },
{ "getPointer", l_lovrTextureDataGetPointer },

15
src/modules/data/textureData.c
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@ -563,6 +563,21 @@ bool lovrTextureDataEncode(TextureData* textureData, const char* filename) {
return success;
}
void lovrTextureDataPaste(TextureData* textureData, TextureData* source, uint32_t dx, uint32_t dy, uint32_t sx, uint32_t sy, uint32_t w, uint32_t h) {
lovrAssert(textureData->format == source->format, "Currently TextureData must have the same format to paste");
lovrAssert(textureData->format < FORMAT_DXT1, "Compressed TextureData cannot be pasted");
size_t pixelSize = getPixelSize(textureData->format);
lovrAssert(dx + w <= textureData->width && dy + h <= textureData->height, "Attempt to paste outside of destination TextureData bounds");
lovrAssert(sx + w <= source->width && sy + h <= source->height, "Attempt to paste from outside of source TextureData bounds");
uint8_t* src = (uint8_t*) source->blob.data + ((source->height - 1 - sy) * source->width + sx) * pixelSize;
uint8_t* dst = (uint8_t*) textureData->blob.data + ((textureData->height - 1 - dy) * textureData->width + sx) * pixelSize;
for (uint32_t y = 0; y < h; y++) {
memcpy(dst, src, w * pixelSize);
src -= source->width * pixelSize;
dst -= textureData->width * pixelSize;
}
}
void lovrTextureDataDestroy(void* ref) {
TextureData* textureData = ref;
lovrRelease(Blob, textureData->source);

1
src/modules/data/textureData.h
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@ -64,4 +64,5 @@ TextureData* lovrTextureDataInitFromBlob(TextureData* textureData, Blob* blob, b
Color lovrTextureDataGetPixel(TextureData* textureData, uint32_t x, uint32_t y);
void lovrTextureDataSetPixel(TextureData* textureData, uint32_t x, uint32_t y, Color color);
bool lovrTextureDataEncode(TextureData* textureData, const char* filename);
void lovrTextureDataPaste(TextureData* textureData, TextureData* source, uint32_t dx, uint32_t dy, uint32_t sx, uint32_t sy, uint32_t w, uint32_t h);
void lovrTextureDataDestroy(void* ref);