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LoadTGA纹理24位转565改为24位转32位

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This commit is contained in:
hyzboy 2019-07-08 17:50:06 +08:00
parent 43a85ba309
commit 9f8171f8c0
1 changed files with 16 additions and 5 deletions
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21
example/Vulkan/TGATexture.cpp
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@ -54,6 +54,17 @@ namespace
} }
} }
void RGBtoRGBA(uint8 *tar,uint8 *src,uint size)
{
for(uint i=0;i<size;i++)
{
*tar++=*src++;
*tar++=*src++;
*tar++=*src++;
*tar++=255;
}
}
void SwapRow(uint8 *data,uint line_size,uint height) void SwapRow(uint8 *data,uint line_size,uint height)
{ {
uint8 *top=data; uint8 *top=data;
@ -112,8 +123,8 @@ Texture2D *LoadTGATexture(const OSString &filename,Device *device)
if(header.image_type==2) if(header.image_type==2)
{ {
if(header.bit==24)format=FMT_RGB8UN;else if(header.bit==24)format=FMT_BGR8UN;else
if(header.bit==32)format=FMT_RGBA8UN; if(header.bit==32)format=FMT_BGRA8UN;
} }
else if(header.image_type==3&&header.bit==8) else if(header.image_type==3&&header.bit==8)
format=FMT_R8UN; format=FMT_R8UN;
@ -135,11 +146,11 @@ Texture2D *LoadTGATexture(const OSString &filename,Device *device)
if(image_desc.direction==0) if(image_desc.direction==0)
SwapRow((uint8 *)pixel_data,header.width*header.bit/8,header.height); SwapRow((uint8 *)pixel_data,header.width*header.bit/8,header.height);
buf=device->CreateBuffer(VK_BUFFER_USAGE_TRANSFER_SRC_BIT,header.width*header.height*2); buf=device->CreateBuffer(VK_BUFFER_USAGE_TRANSFER_SRC_BIT,header.width*header.height*4);
RGB8to565((uint16 *)buf->Map(),pixel_data,header.width*header.height); RGBtoRGBA((uint8 *)buf->Map(),pixel_data,header.width*header.height);
buf->Unmap(); buf->Unmap();
format=FMT_RGB565; format=FMT_BGRA8UN;
} }
else else
{ {