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This commit is contained in:
Christian Semmler 2023-12-31 14:59:37 -05:00
parent 871f59bfa9
commit 7f61562ecd
2 changed files with 16 additions and 32 deletions
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7
LEGO1/mxbitmap.h
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@ -81,6 +81,13 @@ class MxBitmap : public MxCore {
MxLong alignedWidth = AlignToFourByte(m_bmiHeader->biWidth);
return alignedWidth * absHeight;
}
inline MxLong GetAdjustedStride()
{
if (m_bmiHeader->biCompression == BI_RGB_TOPDOWN || m_bmiHeader->biHeight < 0)
return GetBmiStride();
else
return -GetBmiStride();
}
private:
MxResult ImportColorsToPalette(RGBQUAD*, MxPalette*);

41
LEGO1/mxdisplaysurface.cpp
View File

@ -327,10 +327,9 @@ void MxDisplaySurface::VTable0x28(
}
if (hr == DD_OK) {
BITMAPINFOHEADER* biHeader = p_bitmap->GetBmiHeader();
MxU8* data;
switch (biHeader->biCompression) {
switch (p_bitmap->GetBmiHeader()->biCompression) {
case BI_RGB: {
MxS32 rowsBeforeTop;
if (p_bitmap->GetBmiHeight() < 0)
@ -360,16 +359,10 @@ void MxDisplaySurface::VTable0x28(
switch (m_surfaceDesc.ddpfPixelFormat.dwRGBBitCount) {
case 8: {
MxU8* surface = (MxU8*) ddsd.lpSurface + p_right + (p_bottom * ddsd.lPitch);
MxLong stride;
if (biHeader->biCompression == BI_RGB_TOPDOWN || p_bitmap->GetBmiHeight() < 0)
stride = p_bitmap->GetBmiStride();
else
stride = -p_bitmap->GetBmiStride();
MxLong stride = p_bitmap->GetAdjustedStride();
MxLong v22 = stride - p_width;
MxLong v55 = ddsd.lPitch - (2 * p_width);
MxLong length = ddsd.lPitch - (2 * p_width);
while (p_height--) {
MxU8* surfaceBefore = surface;
@ -381,7 +374,7 @@ void MxDisplaySurface::VTable0x28(
}
data += v22;
surface += v55;
surface += length;
memcpy(surface, surfaceBefore, 2 * p_width);
surface += ddsd.lPitch;
@ -390,12 +383,7 @@ void MxDisplaySurface::VTable0x28(
}
case 16: {
MxU8* surface = (MxU8*) ddsd.lpSurface + (2 * p_right) + (p_bottom * ddsd.lPitch);
MxLong stride;
if (biHeader->biCompression == BI_RGB_TOPDOWN || p_bitmap->GetBmiHeight() < 0)
stride = p_bitmap->GetBmiStride();
else
stride = -p_bitmap->GetBmiStride();
MxLong stride = p_bitmap->GetAdjustedStride();
stride -= p_width;
MxS32 length = p_width * 4;
@ -448,33 +436,22 @@ void MxDisplaySurface::VTable0x28(
switch (m_surfaceDesc.ddpfPixelFormat.dwRGBBitCount) {
case 8: {
MxU8* surface = (MxU8*) ddsd.lpSurface + p_right + (p_bottom * ddsd.lPitch);
MxLong stride;
MxLong stride = p_bitmap->GetAdjustedStride();
if (biHeader->biCompression == BI_RGB_TOPDOWN || p_bitmap->GetBmiHeight() < 0)
stride = p_bitmap->GetBmiStride();
else
stride = -p_bitmap->GetBmiStride();
MxLong v57 = ddsd.lPitch;
MxLong length = ddsd.lPitch;
while (p_height--) {
memcpy(surface, data, p_width);
data += stride;
surface += v57;
surface += length;
}
break;
}
case 16: {
MxU8* surface = (MxU8*) ddsd.lpSurface + (2 * p_right) + (p_bottom * ddsd.lPitch);
MxLong stride;
if (biHeader->biCompression == BI_RGB_TOPDOWN || p_bitmap->GetBmiHeight() < 0)
stride = p_bitmap->GetBmiStride();
else
stride = -p_bitmap->GetBmiStride();
MxLong stride = p_bitmap->GetAdjustedStride();
MxLong v50 = stride - p_width;
MxLong length = ddsd.lPitch - (2 * p_width);
for (MxS32 i = 0; p_height > i; i++) {
for (MxS32 j = 0; p_width > j; j++) {
*(MxU16*) surface = m_16bitPal[*data++];