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Diffstat (limited to 'modules/dds/texture_loader_dds.cpp')
-rw-r--r--modules/dds/texture_loader_dds.cpp88
1 files changed, 29 insertions, 59 deletions
diff --git a/modules/dds/texture_loader_dds.cpp b/modules/dds/texture_loader_dds.cpp
index 294d594135..2f4f7d7a4c 100644
--- a/modules/dds/texture_loader_dds.cpp
+++ b/modules/dds/texture_loader_dds.cpp
@@ -29,14 +29,15 @@
/*************************************************************************/
#include "texture_loader_dds.h"
+
#include "core/os/file_access.h"
#define PF_FOURCC(s) ((uint32_t)(((s)[3] << 24U) | ((s)[2] << 16U) | ((s)[1] << 8U) | ((s)[0])))
+// Reference: https://docs.microsoft.com/en-us/windows/win32/direct3ddds/dds-header
+
enum {
DDS_MAGIC = 0x20534444,
- DDSD_CAPS = 0x00000001,
- DDSD_PIXELFORMAT = 0x00001000,
DDSD_PITCH = 0x00000008,
DDSD_LINEARSIZE = 0x00080000,
DDSD_MIPMAPCOUNT = 0x00020000,
@@ -47,7 +48,6 @@ enum {
};
enum DDSFormat {
-
DDS_DXT1,
DDS_DXT3,
DDS_DXT5,
@@ -95,18 +95,20 @@ static const DDSFormatInfo dds_format_info[DDS_MAX] = {
};
RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, bool p_no_cache) {
-
- if (r_error)
+ if (r_error) {
*r_error = ERR_CANT_OPEN;
+ }
Error err;
FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &err);
- if (!f)
+ if (!f) {
return RES();
+ }
FileAccessRef fref(f);
- if (r_error)
+ if (r_error) {
*r_error = ERR_FILE_CORRUPT;
+ }
ERR_FAIL_COND_V_MSG(err != OK, RES(), "Unable to open DDS texture file '" + p_path + "'.");
@@ -120,13 +122,15 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
uint32_t mipmaps = f->get_32();
//skip 11
- for (int i = 0; i < 11; i++)
+ for (int i = 0; i < 11; i++) {
f->get_32();
+ }
//validate
- if (magic != DDS_MAGIC || hsize != 124 || !(flags & DDSD_PIXELFORMAT) || !(flags & DDSD_CAPS)) {
-
+ // We don't check DDSD_CAPS or DDSD_PIXELFORMAT, as they're mandatory when writing,
+ // but non-mandatory when reading (as some writers don't set them)...
+ if (magic != DDS_MAGIC || hsize != 124) {
ERR_FAIL_V_MSG(RES(), "Invalid or unsupported DDS texture file '" + p_path + "'.");
}
@@ -157,70 +161,55 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
*/
//must avoid this later
- while (f->get_position() < 128)
+ while (f->get_position() < 128) {
f->get_8();
+ }
DDSFormat dds_format;
if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("DXT1")) {
-
dds_format = DDS_DXT1;
} else if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("DXT3")) {
-
dds_format = DDS_DXT3;
} else if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("DXT5")) {
-
dds_format = DDS_DXT5;
} else if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("ATI1")) {
-
dds_format = DDS_ATI1;
} else if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("ATI2")) {
-
dds_format = DDS_ATI2;
} else if (format_flags & DDPF_FOURCC && format_fourcc == PF_FOURCC("A2XY")) {
-
dds_format = DDS_A2XY;
} else if (format_flags & DDPF_RGB && format_flags & DDPF_ALPHAPIXELS && format_rgb_bits == 32 && format_red_mask == 0xff0000 && format_green_mask == 0xff00 && format_blue_mask == 0xff && format_alpha_mask == 0xff000000) {
-
dds_format = DDS_BGRA8;
} else if (format_flags & DDPF_RGB && !(format_flags & DDPF_ALPHAPIXELS) && format_rgb_bits == 24 && format_red_mask == 0xff0000 && format_green_mask == 0xff00 && format_blue_mask == 0xff) {
-
dds_format = DDS_BGR8;
} else if (format_flags & DDPF_RGB && format_flags & DDPF_ALPHAPIXELS && format_rgb_bits == 32 && format_red_mask == 0xff && format_green_mask == 0xff00 && format_blue_mask == 0xff0000 && format_alpha_mask == 0xff000000) {
-
dds_format = DDS_RGBA8;
} else if (format_flags & DDPF_RGB && !(format_flags & DDPF_ALPHAPIXELS) && format_rgb_bits == 24 && format_red_mask == 0xff && format_green_mask == 0xff00 && format_blue_mask == 0xff0000) {
-
dds_format = DDS_RGB8;
} else if (format_flags & DDPF_RGB && format_flags & DDPF_ALPHAPIXELS && format_rgb_bits == 16 && format_red_mask == 0x00007c00 && format_green_mask == 0x000003e0 && format_blue_mask == 0x0000001f && format_alpha_mask == 0x00008000) {
-
dds_format = DDS_BGR5A1;
} else if (format_flags & DDPF_RGB && format_flags & DDPF_ALPHAPIXELS && format_rgb_bits == 32 && format_red_mask == 0x3ff00000 && format_green_mask == 0xffc00 && format_blue_mask == 0x3ff && format_alpha_mask == 0xc0000000) {
-
dds_format = DDS_BGR10A2;
} else if (format_flags & DDPF_RGB && !(format_flags & DDPF_ALPHAPIXELS) && format_rgb_bits == 16 && format_red_mask == 0x0000f800 && format_green_mask == 0x000007e0 && format_blue_mask == 0x0000001f) {
-
dds_format = DDS_BGR565;
} else if (!(format_flags & DDPF_ALPHAPIXELS) && format_rgb_bits == 8 && format_red_mask == 0xff && format_green_mask == 0xff && format_blue_mask == 0xff) {
-
dds_format = DDS_LUMINANCE;
} else if ((format_flags & DDPF_ALPHAPIXELS) && format_rgb_bits == 16 && format_red_mask == 0xff && format_green_mask == 0xff && format_blue_mask == 0xff && format_alpha_mask == 0xff00) {
-
dds_format = DDS_LUMINANCE_ALPHA;
} else if (format_flags & DDPF_INDEXED && format_rgb_bits == 8) {
-
dds_format = DDS_BGR565;
} else {
-
printf("unrecognized fourcc %x format_flags: %x - rgbbits %i - red_mask %x green mask %x blue mask %x alpha mask %x\n", format_fourcc, format_flags, format_rgb_bits, format_red_mask, format_green_mask, format_blue_mask, format_alpha_mask);
ERR_FAIL_V_MSG(RES(), "Unrecognized or unsupported color layout in DDS '" + p_path + "'.");
}
- if (!(flags & DDSD_MIPMAPCOUNT))
+ if (!(flags & DDSD_MIPMAPCOUNT)) {
mipmaps = 1;
+ }
Vector<uint8_t> src_data;
@@ -236,7 +225,6 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
ERR_FAIL_COND_V(!(flags & DDSD_LINEARSIZE), RES());
for (uint32_t i = 1; i < mipmaps; i++) {
-
w = MAX(1, w >> 1);
h = MAX(1, h >> 1);
uint32_t bsize = MAX(info.divisor, w) / info.divisor * MAX(info.divisor, h) / info.divisor * info.block_size;
@@ -249,7 +237,6 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
f->get_buffer(wb, size);
} else if (info.palette) {
-
//indexed
ERR_FAIL_COND_V(!(flags & DDSD_PITCH), RES());
ERR_FAIL_COND_V(format_rgb_bits != 8, RES());
@@ -262,16 +249,15 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
int colsize = 3;
for (int i = 0; i < 256; i++) {
-
- if (palette[i * 4 + 3] < 255)
+ if (palette[i * 4 + 3] < 255) {
colsize = 4;
+ }
}
int w2 = width;
int h2 = height;
for (uint32_t i = 1; i < mipmaps; i++) {
-
w2 = (w2 + 1) >> 1;
h2 = (h2 + 1) >> 1;
size += w2 * h2 * info.block_size;
@@ -282,14 +268,14 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
f->get_buffer(wb, size);
for (int i = 0; i < 256; i++) {
-
int dst_ofs = size + i * colsize;
int src_ofs = i * 4;
wb[dst_ofs + 0] = palette[src_ofs + 2];
wb[dst_ofs + 1] = palette[src_ofs + 1];
wb[dst_ofs + 2] = palette[src_ofs + 0];
- if (colsize == 4)
+ if (colsize == 4) {
wb[dst_ofs + 3] = palette[src_ofs + 3];
+ }
}
} else {
//uncompressed generic...
@@ -297,30 +283,27 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
uint32_t size = width * height * info.block_size;
for (uint32_t i = 1; i < mipmaps; i++) {
-
w = (w + 1) >> 1;
h = (h + 1) >> 1;
size += w * h * info.block_size;
}
- if (dds_format == DDS_BGR565)
+ if (dds_format == DDS_BGR565) {
size = size * 3 / 2;
- else if (dds_format == DDS_BGR5A1)
+ } else if (dds_format == DDS_BGR5A1) {
size = size * 2;
+ }
src_data.resize(size);
uint8_t *wb = src_data.ptrw();
f->get_buffer(wb, size);
switch (dds_format) {
-
case DDS_BGR5A1: {
-
// TO RGBA
int colcount = size / 4;
for (int i = colcount - 1; i >= 0; i--) {
-
int src_ofs = i * 2;
int dst_ofs = i * 4;
@@ -335,11 +318,9 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
}
} break;
case DDS_BGR565: {
-
int colcount = size / 3;
for (int i = colcount - 1; i >= 0; i--) {
-
int src_ofs = i * 2;
int dst_ofs = i * 3;
@@ -353,12 +334,10 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
} break;
case DDS_BGR10A2: {
-
// TO RGBA
int colcount = size / 4;
for (int i = colcount - 1; i >= 0; i--) {
-
int ofs = i * 4;
uint32_t w32 = uint32_t(wb[ofs + 0]) | (uint32_t(wb[ofs + 1]) << 8) | (uint32_t(wb[ofs + 2]) << 16) | (uint32_t(wb[ofs + 3]) << 24);
@@ -375,26 +354,21 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
}
} break;
case DDS_BGRA8: {
-
int colcount = size / 4;
for (int i = 0; i < colcount; i++) {
-
SWAP(wb[i * 4 + 0], wb[i * 4 + 2]);
}
} break;
case DDS_BGR8: {
-
int colcount = size / 3;
for (int i = 0; i < colcount; i++) {
-
SWAP(wb[i * 3 + 0], wb[i * 3 + 2]);
}
} break;
case DDS_RGBA8: {
-
/* do nothing either
int colcount = size/4;
@@ -413,7 +387,6 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
*/
} break;
case DDS_RGB8: {
-
// do nothing
/*
int colcount = size/3;
@@ -424,12 +397,10 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
}*/
} break;
case DDS_LUMINANCE: {
-
// do nothing i guess?
} break;
case DDS_LUMINANCE_ALPHA: {
-
// do nothing i guess?
} break;
@@ -444,25 +415,24 @@ RES ResourceFormatDDS::load(const String &p_path, const String &p_original_path,
Ref<ImageTexture> texture = memnew(ImageTexture);
texture->create_from_image(img);
- if (r_error)
+ if (r_error) {
*r_error = OK;
+ }
return texture;
}
void ResourceFormatDDS::get_recognized_extensions(List<String> *p_extensions) const {
-
p_extensions->push_back("dds");
}
bool ResourceFormatDDS::handles_type(const String &p_type) const {
-
return ClassDB::is_parent_class(p_type, "Texture2D");
}
String ResourceFormatDDS::get_resource_type(const String &p_path) const {
-
- if (p_path.get_extension().to_lower() == "dds")
+ if (p_path.get_extension().to_lower() == "dds") {
return "ImageTexture";
+ }
return "";
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-01 21:18:36 +0000