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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
internal void
Convert4x4Chunk(pixel_buffer *Buffer, uint8 Which)
{
uint8 *Src = (uint8 *)Buffer->OriginalBuffer;
uint8 *Temp = (uint8 *)Buffer->EffectBuffer;
uint32 RemainderPixels = Buffer->Width % 4;
for (uint32 Y = 0; Y < Buffer->Height; Y++) {
uint32 X = 0;
while (X < Buffer->Width - RemainderPixels) {
uint32 XLookup = (X >> 2)*16 + (X % 4);
uint32 YLookup = (Y >> 2)*(Buffer->FullWidth*4) + (Y % 4)*4;
uint32 PixelToSeek = XLookup + YLookup;
uint8 *DPixel, *Pixel;
if (Which == 0) {
DPixel = Temp + PixelToSeek*Buffer->BytesPerPixel;
Pixel = Src + Y*Buffer->Width*4 + X*Buffer->BytesPerPixel;
} else {
Pixel = Src + PixelToSeek*Buffer->BytesPerPixel;
DPixel = Temp + Y*Buffer->Width*4 + X*Buffer->BytesPerPixel;
}
if (InstructionMode == sse_enabled || InstructionMode == avx_enabled) {
__m128i Row = _mm_loadu_si128((__m128i *)Pixel);
_mm_storeu_si128((__m128i *)DPixel, Row);
X+=4;
} else {
*(uint32 *)DPixel = *(uint32 *)Pixel;
X++;
}
}
while (X < Buffer->Width) {
uint32 XLookup = (X >> 2)*16 + (X % 4);
uint32 YLookup = (Y >> 2)*(Buffer->FullWidth*4) + (Y % 4)*4;
uint32 PixelToSeek = XLookup + YLookup;
uint8 *DPixel, *Pixel;
if (Which == 0) {
DPixel = Temp + PixelToSeek*Buffer->BytesPerPixel;
Pixel = Src + Y*Buffer->Width*4 + X*Buffer->BytesPerPixel;
} else {
Pixel = Src + PixelToSeek*Buffer->BytesPerPixel;
DPixel = Temp + Y*Buffer->Width*4 + X*Buffer->BytesPerPixel;
}
*(uint32 *)DPixel = *(uint32 *)Pixel;
X++;
}
}
}
// TODO(fox): Replace this in the future.
internal void *
MoveImportToBitmap(memory *Memory, pixel_buffer *Raster, void *Input)
{
uint8 *Row = ((uint8 *)Input);
void *Output = AllocateMemory(Memory, Raster->FullWidth * Raster->FullHeight * Raster->BytesPerPixel, B_Scratch);
uint8 *Row2 = ((uint8 *)Output);
uint64 bytes = 0;
uint16 ByteOffset = Raster->BytesPerPixel;
if (InstructionMode == avx_enabled)
ByteOffset = 8*Raster->BytesPerPixel;
else if (InstructionMode == avx_enabled)
ByteOffset = 4*Raster->BytesPerPixel;
uint64 TotalBytes = Raster->Height*Raster->Width*Raster->BytesPerPixel;
uint64 RemainderBytes = TotalBytes % ByteOffset;
while (bytes <= TotalBytes - RemainderBytes) {
uint8 *Pixel = (uint8 *)Row + bytes;
uint8 *Pixel2 = (uint8 *)Row2 + bytes;
if (InstructionMode == sse_enabled || InstructionMode == avx_enabled) {
__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;
}
internal void
ClearBuffer(pixel_buffer *Raster, void *Buffer)
{
uint8 *Row = (uint8 *)Buffer;
__m256i Zero8 = _mm256_setzero_si256();
__m128i Zero = _mm_setzero_si128();
uint64 bytes = 0;
uint16 ByteOffset = Raster->BytesPerPixel;
if (InstructionMode == avx_enabled)
ByteOffset = 8*Raster->BytesPerPixel;
else if (InstructionMode == avx_enabled)
ByteOffset = 4*Raster->BytesPerPixel;
uint64 TotalBytes = Raster->FullHeight*Raster->FullWidth*Raster->BytesPerPixel;
while (bytes < TotalBytes) {
uint8 *Pixel = Row + bytes;
if (InstructionMode == avx_enabled) {
_mm256_storeu_si256((__m256i *)Pixel, Zero8);
} else if (InstructionMode == sse_enabled) {
_mm_storeu_si128((__m128i *)Pixel, Zero);
} else {
*(uint32 *)Pixel = 0x00000000;
}
bytes += ByteOffset;
}
}
// 0 - original -> effect
// 1 - effect -> original
internal void
CopyToBuffer(pixel_buffer *Raster, uint16 Which)
{
uint8 *Row, *Row2;
if (Which == 0) {
Row = ((uint8 *)Raster->OriginalBuffer);
Row2 = ((uint8 *)Raster->EffectBuffer);
} else {
Row = ((uint8 *)Raster->EffectBuffer);
Row2 = ((uint8 *)Raster->OriginalBuffer);
}
uint64 bytes = 0;
uint16 ByteOffset = Raster->BytesPerPixel;
if (InstructionMode == avx_enabled)
ByteOffset = 8*Raster->BytesPerPixel;
else if (InstructionMode == avx_enabled)
ByteOffset = 4*Raster->BytesPerPixel;
uint64 TotalBytes = Raster->FullHeight*Raster->FullWidth*Raster->BytesPerPixel;
uint64 RemainderBytes = TotalBytes % ByteOffset;
while (bytes <= TotalBytes - RemainderBytes) {
uint8 *Pixel = (uint8 *)Row + bytes;
uint8 *Pixel2 = (uint8 *)Row2 + bytes;
if (InstructionMode == sse_enabled || InstructionMode == avx_enabled) {
__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;
}
}
internal void
BitmapPackRGB(pixel_buffer *Buffer) {
Assert(Buffer->Pitch);
Convert4x4Chunk(Buffer, 0);
CopyToBuffer(Buffer, 1);
ClearBuffer(Buffer, Buffer->EffectBuffer);
}
internal void
OutputToViewport(pixel_buffer *CompBuffer, project_state *State, GLuint textureID) {
Convert4x4Chunk(CompBuffer, 1);
EndRenderState(State);
glBindTexture(GL_TEXTURE_2D, textureID);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, CompBuffer->Width, CompBuffer->Height, GL_RGBA, GL_UNSIGNED_BYTE,
CompBuffer->EffectBuffer);
}
internal 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 == avx_enabled)
ByteOffset = 8*Raster->BytesPerPixel;
else if (InstructionMode == avx_enabled)
ByteOffset = 4*Raster->BytesPerPixel;
uint64 TotalBytes = Raster->FullHeight*Raster->FullWidth*Raster->BytesPerPixel;
while (bytes < TotalBytes) {
uint8 *Pixel = Row + bytes;
if (InstructionMode == avx_enabled) {
_mm256_storeu_si256((__m256i *)Pixel, Col8);
} else if (InstructionMode == sse_enabled) {
_mm_storeu_si128((__m128i *)Pixel, Col);
} else {
*(uint32 *)Pixel = ColS;
}
bytes += ByteOffset;
}
}
internal 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))) );
}
}
}
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