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// NOTE(fox): Pay attention to how the Y pitch differs between the unpacked
// bitmaps and the 4x4 packed bitmaps, since odd-sized bitmaps are padded.
// TODO(fox): I could write an AVX version of this function, but it may not be
// that much faster since we have to do a bit of uninterleaving.
// 0 - store in 4x4 chunks
// 1 - unpack to 1xwidth
void Bitmap_ConvertPacking(void *Buffer, void *DestBuffer, uint16 Width, uint16 Height, uint16 BytesPerPixel, uint16 Which)
{
uint8 *Src = (uint8 *)Buffer;
uint8 *Temp = (uint8 *)DestBuffer;
uint32 RemainderPixels = Width % 4;
for (uint32 Y = 0; Y < Height; Y++) {
uint32 X = 0;
while (X < Width - RemainderPixels) {
uint16 WidthP, HeightP;
Bitmap_CalcPackedDimensions(Width, Height, &WidthP, &HeightP);
uint32 XLookup = (X >> 2)*16 + (X % 4);
uint32 YLookup = (Y >> 2)*(WidthP*4) + (Y % 4)*4;
uint32 PixelToSeek = XLookup + YLookup;
if (Y == 48 && X == 0)
uint8 war = 0;
// if (YLookup == 2500 && XLookup == 1)
uint8 *DPixel, *Pixel;
if (Which == 0) {
DPixel = Temp + PixelToSeek*BytesPerPixel;
Pixel = Src + Y*Width*4 + X*BytesPerPixel;
} else {
Pixel = Src + PixelToSeek*BytesPerPixel;
DPixel = Temp + Y*Width*4 + X*BytesPerPixel;
}
if (InstructionMode == instruction_mode_sse || InstructionMode == instruction_mode_avx) {
__m128i Row = _mm_loadu_si128((__m128i *)Pixel);
_mm_storeu_si128((__m128i *)DPixel, Row);
X+=4;
} else {
*(uint32 *)DPixel = *(uint32 *)Pixel;
X++;
}
}
while (X < Width) {
uint16 WidthP, HeightP;
Bitmap_CalcPackedDimensions(Width, Height, &WidthP, &HeightP);
uint32 XLookup = (X >> 2)*16 + (X % 4);
uint32 YLookup = (Y >> 2)*(WidthP*4) + (Y % 4)*4;
uint32 PixelToSeek = XLookup + YLookup;
uint8 *DPixel, *Pixel;
if (Which == 0) {
DPixel = Temp + PixelToSeek*BytesPerPixel;
Pixel = Src + Y*Width*4 + X*BytesPerPixel;
} else {
Pixel = Src + PixelToSeek*BytesPerPixel;
DPixel = Temp + Y*Width*4 + X*BytesPerPixel;
}
*(uint32 *)DPixel = *(uint32 *)Pixel;
X++;
}
}
}
// TODO(fox): Replace this in the future.
#if 0
static void *
MoveImportToBitmap(memory *Memory, pixel_buffer *Raster, void *Input)
{
uint8 *Row = ((uint8 *)Input);
// void *Output = AllocateMemory(Memory, Bitmap_CalcTotalBytes(Raster->Width, Raster->Height, Raster->BytesPerPixel), B_Layers);
uint8 *Row2 = ((uint8 *)Output);
uint64 bytes = 0;
uint16 ByteOffset = Bitmap_CalculateByteOffset(BytesPerPixel);
uint64 TotalBytes = Bitmap_CalculateTotalBytes(Width, Height, BytesPerPixel);
uint64 RemainderBytes = TotalBytes % ByteOffset;
while (bytes <= TotalBytes - RemainderBytes) {
uint8 *Pixel = (uint8 *)Row + bytes;
uint8 *Pixel2 = (uint8 *)Row2 + bytes;
if (InstructionMode == instruction_mode_sse || InstructionMode == instruction_mode_avx) {
__m128i OutputPixel = _mm_loadu_si128((__m128i *)Pixel);
_mm_storeu_si128((__m128i *)Pixel2, OutputPixel);
bytes += 4*Raster->BytesPerPixel;
} else {
*(uint32 *)Pixel2 = *(uint32 *)Pixel;
bytes += Raster->BytesPerPixel;
}
}
while (bytes <= TotalBytes) {
uint8 *Pixel = (uint8 *)Row + bytes;
uint8 *Pixel2 = (uint8 *)Row2 + bytes;
*(uint32 *)Pixel2 = *(uint32 *)Pixel;
bytes += Raster->BytesPerPixel;
}
return Output;
}
#endif
static void
Bitmap_Clear(void *Buffer, uint16 Width, uint16 Height, uint16 BytesPerPixel)
{
uint8 *Row = (uint8 *)Buffer;
__m256i Zero8 = _mm256_setzero_si256();
__m128i Zero = _mm_setzero_si128();
uint64 bytes = 0;
uint16 ByteOffset = Bitmap_CalcByteOffset(BytesPerPixel);
uint64 TotalBytes = Bitmap_CalcTotalBytes(Width, Height, BytesPerPixel);
while (bytes < TotalBytes) {
uint8 *Pixel = Row + bytes;
if (InstructionMode == instruction_mode_avx) {
_mm256_storeu_si256((__m256i *)Pixel, Zero8);
} else if (InstructionMode == instruction_mode_sse) {
_mm_storeu_si128((__m128i *)Pixel, Zero);
} else {
*(uint32 *)Pixel = 0x00000000;
}
bytes += ByteOffset;
}
}
static void
Bitmap_CalcPackedDimensions(uint16 Width, uint16 Height, uint16 *WidthP, uint16 *HeightP) {
uint16 ExtraWidth = 4 - (Width % 4);
if (ExtraWidth == 4)
ExtraWidth = 0;
uint16 ExtraHeight = 4 - (Height % 4);
if (ExtraHeight == 4)
ExtraHeight = 0;
*WidthP = Width + ExtraWidth;
*HeightP = Height + ExtraHeight;
}
static uint16
Bitmap_CalcByteOffset(uint16 BytesPerPixel) {
uint16 ByteOffset = BytesPerPixel;
if (InstructionMode == instruction_mode_avx)
ByteOffset = 8*BytesPerPixel;
if (InstructionMode == instruction_mode_sse)
ByteOffset = 4*BytesPerPixel;
return ByteOffset;
}
static uint64
Bitmap_CalcUnpackedBytes(uint16 Width, uint16 Height, uint16 BytesPerPixel) {
uint64 TotalBytes = (uint64)Width*Height*BytesPerPixel;
return TotalBytes;
}
static uint64
Bitmap_CalcTotalBytes(uint16 Width, uint16 Height, uint16 BytesPerPixel) {
uint16 WidthP, HeightP;
Bitmap_CalcPackedDimensions(Width, Height, &WidthP, &HeightP);
uint64 TotalBytes = (uint64)WidthP*HeightP*BytesPerPixel;
return TotalBytes;
}
// TODO(fox): Maybe turn this into a generic memory copy; we don't need to care
// about pixels for any particular reason here.
static void
Bitmap_CopyToPointer(void *Input, void *Output, uint16 BytesPerPixel, uint64 TotalBytes)
{
uint8 *Row = (uint8 *)Input;
uint8 *Row2 = (uint8 *)Output;
uint64 bytes = 0;
uint16 ByteOffset = Bitmap_CalcByteOffset(BytesPerPixel);
uint64 RemainderBytes = TotalBytes % ByteOffset;
while (bytes <= TotalBytes - RemainderBytes) {
if (bytes > 2496*4)
int pp = 0;
uint8 *Pixel = (uint8 *)Row + bytes;
uint8 *Pixel2 = (uint8 *)Row2 + bytes;
if (InstructionMode == instruction_mode_avx) {
__m256i OutputPixel = _mm256_loadu_si256((__m256i *)Pixel);
_mm256_storeu_si256((__m256i *)Pixel2, OutputPixel);
} else if (InstructionMode == instruction_mode_sse) {
__m128i OutputPixel = _mm_loadu_si128((__m128i *)Pixel);
_mm_storeu_si128((__m128i *)Pixel2, OutputPixel);
} else {
*(uint32 *)Pixel2 = *(uint32 *)Pixel;
}
bytes += ByteOffset;
}
while (bytes <= TotalBytes) {
uint8 *Pixel = (uint8 *)Row + bytes;
uint8 *Pixel2 = (uint8 *)Row2 + bytes;
*(uint32 *)Pixel2 = *(uint32 *)Pixel;
bytes += BytesPerPixel;
}
}
// This would be an easy SIMD if only AVX had a scatter call...
// NOTE(fox): Only works with unpacked bitmaps for now.
static void
Bitmap_CalcHistogram(void *Data, void *Input, uint16 BytesPerPixel, uint64 TotalBytes)
{
uint32 *Slot = (uint32 *)Data;
uint8 *Row = (uint8 *)Input;
uint64 bytes = 0;
uint16 ByteOffset = Bitmap_CalcByteOffset(BytesPerPixel);
uint64 RemainderBytes = TotalBytes % ByteOffset;
for (int i = 0; i < 256*5; i++) {
*(real32 *)((uint8 *)Slot + i*sizeof(real32)) = 0;
}
while (bytes <= TotalBytes) {
uint8 *Pixel = (uint8 *)Row + bytes;
uint8 A = (*(uint32 *)Pixel >> 24);
uint8 R = (*(uint32 *)Pixel >> 16);
uint8 G = (*(uint32 *)Pixel >> 8);
uint8 B = (*(uint32 *)Pixel >> 0);
uint8 Avg = (uint8)((real32)(R + G + B) / 3.0f);
*(real32 *)((uint8 *)Slot + Avg*sizeof(real32)) += 1;
*(real32 *)((uint8 *)Slot + (256 + R)*sizeof(real32)) += 1;
*(real32 *)((uint8 *)Slot + (256*2 + G)*sizeof(real32)) += 1;
*(real32 *)((uint8 *)Slot + (256*3 + B)*sizeof(real32)) += 1;
*(real32 *)((uint8 *)Slot + (256*4 + A)*sizeof(real32)) += 1;
bytes += BytesPerPixel;
}
}
#if 0
static void
BitmapPackRGB(pixel_buffer *Buffer) {
Assert(Buffer->Pitch);
Convert4x4Chunk(Buffer, 0);
CopyToBuffer(Buffer, 1);
ClearBuffer(Buffer, Buffer->EffectBuffer);
}
static void
DebugFillSolid(pixel_buffer *Raster, v4 Color)
{
uint32 ColS = ColToUint32(Color);
__m256i Col8 = _mm256_set1_epi32(ColS);
__m128i Col = _mm_set1_epi32(ColS);
uint8 *Row = (uint8 *)Raster->OriginalBuffer;
uint64 bytes = 0;
uint16 ByteOffset = Raster->BytesPerPixel;
if (InstructionMode == instruction_mode_avx)
ByteOffset = 8*Raster->BytesPerPixel;
else if (InstructionMode == instruction_mode_sse)
ByteOffset = 4*Raster->BytesPerPixel;
uint64 TotalBytes = Raster->FullHeight*Raster->FullWidth*Raster->BytesPerPixel;
while (bytes < TotalBytes) {
uint8 *Pixel = Row + bytes;
if (InstructionMode == instruction_mode_avx) {
_mm256_storeu_si256((__m256i *)Pixel, Col8);
} else if (InstructionMode == instruction_mode_sse) {
_mm_storeu_si128((__m128i *)Pixel, Col);
} else {
*(uint32 *)Pixel = ColS;
}
bytes += ByteOffset;
}
}
static void
DebugBitmap(pixel_buffer *Raster)
{
uint8 asda = 0x0;
uint8 *Row = ((uint8 *)Raster->OriginalBuffer);
real32 XInc = 255.0f / Raster->Width;
real32 YInc = 255.0f / Raster->Height;
for (uint8 Y = 0; Y < Raster->Height; Y++) {
for (uint8 X = 0; X < Raster->Width; X++) {
uint8 *Pixel = (uint8 *)Row + Raster->FullWidth*Y*4 + X*4;
// *(uint32 *)Pixel = 0xffffffff;
if (Y > 3) { asda = 0xff; }
*(uint32 *)Pixel = ((0xff << 24) |
(asda << 16) |
(RoundReal32ToInt32((YInc * Y)) << 8) |
(RoundReal32ToInt32((XInc * X))) );
}
}
}
#endif
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