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[rl_gputex] Correctly load mipmaps from DDS files (#4399)

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Nikolas
2024-10-21 01:25:33 +03:00
committed by GitHub
parent dc5e6e0ad0
commit 902d3c92e3
1 changed files with 10 additions and 3 deletions
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13
src/external/rl_gputex.h vendored
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@@ -185,6 +185,7 @@ void *rl_load_dds_from_memory(const unsigned char *file_data, unsigned int file_
if (header->ddspf.flags == 0x40) // No alpha channel
{
int data_size = image_pixel_size*sizeof(unsigned short);
if (header->mipmap_count > 1) data_size = data_size + data_size / 3;
image_data = RL_MALLOC(data_size);
memcpy(image_data, file_data_ptr, data_size);
@@ -196,6 +197,7 @@ void *rl_load_dds_from_memory(const unsigned char *file_data, unsigned int file_
if (header->ddspf.a_bit_mask == 0x8000) // 1bit alpha
{
int data_size = image_pixel_size*sizeof(unsigned short);
if (header->mipmap_count > 1) data_size = data_size + data_size / 3;
image_data = RL_MALLOC(data_size);
memcpy(image_data, file_data_ptr, data_size);
@@ -215,6 +217,7 @@ void *rl_load_dds_from_memory(const unsigned char *file_data, unsigned int file_
else if (header->ddspf.a_bit_mask == 0xf000) // 4bit alpha
{
int data_size = image_pixel_size*sizeof(unsigned short);
if (header->mipmap_count > 1) data_size = data_size + data_size / 3;
image_data = RL_MALLOC(data_size);
memcpy(image_data, file_data_ptr, data_size);
@@ -236,6 +239,7 @@ void *rl_load_dds_from_memory(const unsigned char *file_data, unsigned int file_
else if ((header->ddspf.flags == 0x40) && (header->ddspf.rgb_bit_count == 24)) // DDS_RGB, no compressed
{
int data_size = image_pixel_size*3*sizeof(unsigned char);
if (header->mipmap_count > 1) data_size = data_size + data_size / 3;
image_data = RL_MALLOC(data_size);
memcpy(image_data, file_data_ptr, data_size);
@@ -245,6 +249,7 @@ void *rl_load_dds_from_memory(const unsigned char *file_data, unsigned int file_
else if ((header->ddspf.flags == 0x41) && (header->ddspf.rgb_bit_count == 32)) // DDS_RGBA, no compressed
{
int data_size = image_pixel_size*4*sizeof(unsigned char);
if (header->mipmap_count > 1) data_size = data_size + data_size / 3;
image_data = RL_MALLOC(data_size);
memcpy(image_data, file_data_ptr, data_size);
@@ -265,9 +270,11 @@ void *rl_load_dds_from_memory(const unsigned char *file_data, unsigned int file_
}
else if (((header->ddspf.flags == 0x04) || (header->ddspf.flags == 0x05)) && (header->ddspf.fourcc > 0)) // Compressed
{
// NOTE: This forces only 1 mipmap to be loaded which is not really correct but it works
int data_size = (header->pitch_or_linear_size < file_size - 0x80) ? header->pitch_or_linear_size : file_size - 0x80;
*mips = 1;
int data_size = 0;
// Calculate data size, including all mipmaps
if (header->mipmap_count > 1) data_size = header->pitch_or_linear_size + header->pitch_or_linear_size / 3;
else data_size = header->pitch_or_linear_size;
image_data = RL_MALLOC(data_size*sizeof(unsigned char));