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Better grid texture.

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This commit is contained in:
leo 2015-05-25 23:26:03 +00:00
parent 6b86d13042
commit 8ed2c7bf0f
1 changed files with 85 additions and 50 deletions
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135
common/lc_texture.cpp
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@ -43,78 +43,113 @@ void lcTexture::CreateGridTexture()
{
const int NumLevels = 9;
Image GridImages[NumLevels];
lcuint8* Previous = NULL;
for (int ImageLevel = 0; ImageLevel < NumLevels; ImageLevel++)
{
Image& GridImage = GridImages[ImageLevel];
const int GridSize = 256 >> ImageLevel;
const float Radius1 = (80 >> ImageLevel) * (80 >> ImageLevel);
const float Radius2 = (72 >> ImageLevel) * (72 >> ImageLevel);
GridImage.Allocate(GridSize, GridSize, LC_PIXEL_FORMAT_A8);
lcuint8* BlurBuffer = new lcuint8[GridSize * GridSize];
for (int y = 0; y < GridSize; y++)
if (Previous)
{
lcuint8* Pixel = GridImage.mData + y * GridSize;
memset(Pixel, 0, GridSize);
int PreviousGridSize = 2 * GridSize;
const float y2 = (y - GridSize / 2) * (y - GridSize / 2);
if (Radius1 <= y2)
continue;
if (Radius2 <= y2)
for (int y = 0; y < GridSize - 1; y++)
{
int x1 = sqrtf(Radius1 - y2);
for (int x = 0; x < GridSize - 1; x++)
{
lcuint8 a = Previous[x * 2 + y * 2 * PreviousGridSize] > 64 ? 255 : 0;
lcuint8 b = Previous[x * 2 + 1 + y * 2 * PreviousGridSize] > 64 ? 255 : 0;
lcuint8 c = Previous[x * 2 + (y * 2 + 1) * PreviousGridSize] > 64 ? 255 : 0;
lcuint8 d = Previous[x * 2 + 1 + (y * 2 + 1) * PreviousGridSize] > 64 ? 255 : 0;
GridImage.mData[x + y * GridSize] = (a + b + c + d) / 4;
}
for (int x = GridSize / 2 - x1; x < GridSize / 2 + x1; x++)
Pixel[x] = 255;
int x = GridSize - 1;
lcuint8 a = Previous[x * 2 + y * 2 * PreviousGridSize];
lcuint8 c = Previous[x * 2 + (y * 2 + 1) * PreviousGridSize];
GridImage.mData[x + y * GridSize] = (a + c) / 2;
}
else
{
int x1 = sqrtf(Radius1 - y2);
int x2 = sqrtf(Radius2 - y2);
for (int x = GridSize / 2 - x1; x < GridSize / 2 - x2; x++)
Pixel[x] = 255;
for (int x = GridSize / 2 + x2; x < GridSize / 2 + x1; x++)
Pixel[x] = 255;
}
}
for (int y = 0; y < GridSize - 1; y++)
{
int y = GridSize - 1;
for (int x = 0; x < GridSize - 1; x++)
{
lcuint8 a = GridImage.mData[x + y * GridSize];
lcuint8 b = GridImage.mData[x + 1 + y * GridSize];
lcuint8 c = GridImage.mData[x + (y + 1) * GridSize];
lcuint8 d = GridImage.mData[x + 1 + (y + 1) * GridSize];
BlurBuffer[x + y * GridSize] = (a + b + c + d) / 4;
lcuint8 a = Previous[x * 2 + y * 2 * PreviousGridSize];
lcuint8 b = Previous[x * 2 + 1 + y * 2 * PreviousGridSize];
GridImage.mData[x + y * GridSize] = (a + b) / 2;
}
int x = GridSize - 1;
lcuint8 a = GridImage.mData[x + y * GridSize];
lcuint8 c = GridImage.mData[x + (y + 1) * GridSize];
BlurBuffer[x + y * GridSize] = (a + c) / 2;
GridImage.mData[x + y * GridSize] = Previous[x + y * PreviousGridSize];
}
int y = GridSize - 1;
for (int x = 0; x < GridSize - 1; x++)
else
{
lcuint8 a = GridImage.mData[x + y * GridSize];
lcuint8 b = GridImage.mData[x + 1 + y * GridSize];
BlurBuffer[x + y * GridSize] = (a + b) / 2;
const float Radius1 = (80 >> ImageLevel) * (80 >> ImageLevel);
const float Radius2 = (72 >> ImageLevel) * (72 >> ImageLevel);
lcuint8* TempBuffer = new lcuint8[GridSize * GridSize];
for (int y = 0; y < GridSize; y++)
{
lcuint8* Pixel = TempBuffer + y * GridSize;
memset(Pixel, 0, GridSize);
const float y2 = (y - GridSize / 2) * (y - GridSize / 2);
if (Radius1 <= y2)
continue;
if (Radius2 <= y2)
{
int x1 = sqrtf(Radius1 - y2);
for (int x = GridSize / 2 - x1; x < GridSize / 2 + x1; x++)
Pixel[x] = 255;
}
else
{
int x1 = sqrtf(Radius1 - y2);
int x2 = sqrtf(Radius2 - y2);
for (int x = GridSize / 2 - x1; x < GridSize / 2 - x2; x++)
Pixel[x] = 255;
for (int x = GridSize / 2 + x2; x < GridSize / 2 + x1; x++)
Pixel[x] = 255;
}
}
for (int y = 0; y < GridSize - 1; y++)
{
for (int x = 0; x < GridSize - 1; x++)
{
lcuint8 a = TempBuffer[x + y * GridSize];
lcuint8 b = TempBuffer[x + 1 + y * GridSize];
lcuint8 c = TempBuffer[x + (y + 1) * GridSize];
lcuint8 d = TempBuffer[x + 1 + (y + 1) * GridSize];
GridImage.mData[x + y * GridSize] = (a + b + c + d) / 4;
}
int x = GridSize - 1;
lcuint8 a = TempBuffer[x + y * GridSize];
lcuint8 c = TempBuffer[x + (y + 1) * GridSize];
GridImage.mData[x + y * GridSize] = (a + c) / 2;
}
int y = GridSize - 1;
for (int x = 0; x < GridSize - 1; x++)
{
lcuint8 a = TempBuffer[x + y * GridSize];
lcuint8 b = TempBuffer[x + 1 + y * GridSize];
GridImage.mData[x + y * GridSize] = (a + b) / 2;
}
int x = GridSize - 1;
GridImage.mData[x + y * GridSize] = TempBuffer[x + y * GridSize];
delete[] TempBuffer;
}
int x = GridSize - 1;
BlurBuffer[x + y * GridSize] = GridImage.mData[x + y * GridSize];
memcpy(GridImage.mData, BlurBuffer, GridSize * GridSize);
delete[] BlurBuffer;
Previous = GridImage.mData;
}
Load(GridImages, NumLevels, LC_TEXTURE_WRAPU | LC_TEXTURE_WRAPV | LC_TEXTURE_MIPMAPS | LC_TEXTURE_ANISOTROPIC);