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fix and check pvr content size

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This commit is contained in:
Matvey Cherevko
2019-07-27 06:33:33 +07:00
parent 12d9bcc35a
commit c918f9f54b
2 changed files with 25 additions and 16 deletions
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28
sources/enduro2d/utils/image_impl/image_reader_dds.cpp
View File

@@ -69,7 +69,8 @@ namespace
bool get_dds_format(
const dds_header& hdr,
image_data_format& out_format,
u32& out_bytes_per_block) noexcept
u32& out_bytes_per_block,
v2u& out_block_size) noexcept
{
if ( math::check_all_flags(hdr.ddspf.dwFlags, ddsf_fourcc) ) {
switch ( hdr.ddspf.dwFourCC ) {
@@ -78,14 +79,17 @@ namespace
? image_data_format::rgba_dxt1
: image_data_format::rgb_dxt1;
out_bytes_per_block = 8;
out_block_size = v2u(4,4);
break;
case fourcc_dxt3:
out_format = image_data_format::rgba_dxt3;
out_bytes_per_block = 16;
out_block_size = v2u(4,4);
break;
case fourcc_dxt5:
out_format = image_data_format::rgba_dxt5;
out_bytes_per_block = 16;
out_block_size = v2u(4,4);
break;
default:
return false;
@@ -93,12 +97,14 @@ namespace
} else if ( math::check_all_flags(hdr.ddspf.dwFlags, ddsf_rgba) && (hdr.ddspf.dwRGBBitCount == 32) ) {
out_format = image_data_format::rgba8;
out_bytes_per_block = 4;
out_block_size = v2u(1,1);
if ( hdr.ddspf.dwRBitMask == 0x00FF0000 ) {
return false; // BGRA format is not supported
}
} else if ( math::check_all_flags(hdr.ddspf.dwFlags, ddsf_rgb) && (hdr.ddspf.dwRGBBitCount == 24) ) {
out_format = image_data_format::rgb8;
out_bytes_per_block = 3;
out_block_size = v2u(1,1);
if (hdr.ddspf.dwRBitMask == 0x00FF0000) {
return false; // BGRA format is not supported
}
@@ -107,6 +113,7 @@ namespace
} else if ( hdr.ddspf.dwRGBBitCount == 8 ) {
out_format = image_data_format::g8;
out_bytes_per_block = 1;
out_block_size = v2u(1,1);
} else {
return false;
}
@@ -123,6 +130,7 @@ namespace e2d::images::impl
const dds_header& hdr = *reinterpret_cast<const dds_header*>(src.data());
const u8* content = src.data() + sizeof(dds_header);
const std::size_t content_size = static_cast<std::size_t>(src.data() + src.size() - content);
if ( math::check_all_flags(hdr.dwCaps2, ddsf_cubemap) ||
math::check_all_flags(hdr.dwCaps2, ddsf_volume) ||
@@ -133,22 +141,18 @@ namespace e2d::images::impl
image_data_format format = image_data_format(-1);
u32 bytes_per_block = 0;
if ( !get_dds_format(hdr, format, bytes_per_block) ) {
v2u block_size = v2u(1,1);
if ( !get_dds_format(hdr, format, bytes_per_block, block_size) ) {
return false;
}
const v2u dimension = v2u(hdr.dwWidth, hdr.dwHeight);
std::size_t size;
const std::size_t size = bytes_per_block *
((dimension.x + block_size.x - 1) / block_size.x) *
((dimension.y + block_size.y - 1) / block_size.y);
switch ( format ) {
case image_data_format::rgb_dxt1:
case image_data_format::rgba_dxt3:
case image_data_format::rgba_dxt5:
size = ((dimension.x+3)/4) * ((dimension.y+3)/4) * bytes_per_block;
break;
default:
size = dimension.x * dimension.y * bytes_per_block;
break;
if ( content_size != size ) {
return false;
}
dst = image(dimension, format, buffer(content, size));

13
sources/enduro2d/utils/image_impl/image_reader_pvr.cpp
View File

@@ -210,6 +210,7 @@ namespace e2d::images::impl
const pvr_header& hdr = *reinterpret_cast<const pvr_header*>(src.data());
const u8* content = src.data() + sizeof(pvr_header) + hdr.metaDataSize;
const std::size_t content_size = static_cast<std::size_t>(src.data() + src.size() - content);
if ( hdr.numSurfaces != 1 || hdr.numFaces != 1 || hdr.depth > 1 ) {
return false; // cubemap and volume textures are not supported
@@ -222,10 +223,14 @@ namespace e2d::images::impl
return false;
}
v2u dimension = v2u(hdr.width, hdr.height);
std::size_t size = bytes_per_block *
(dimension.x + block_size.x - 1) / block_size.x *
(dimension.y + block_size.y - 1) / block_size.y;
const v2u dimension = v2u(hdr.width, hdr.height);
const std::size_t size = bytes_per_block *
((dimension.x + block_size.x - 1) / block_size.x) *
((dimension.y + block_size.y - 1) / block_size.y);
if ( content_size != size ) {
return false;
}
dst = image(dimension, format, buffer(content, size));
return true;