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OpenGL2: Replace R_MipMapsRGB() with faster version.

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This commit is contained in:
SmileTheory 2014-07-22 11:43:19 -07:00
parent 48738599a0
commit 3d01543e2c
2 changed files with 42 additions and 37 deletions
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3
code/renderergl2/tr_extramath.h
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@ -56,9 +56,6 @@ void Mat4SimpleInverse( const mat4_t in, mat4_t out);
#define ByteToFloat(a) ((float)(a) * 1.0f/255.0f)
#define FloatToByte(a) (byte)((a) * 255.0f)
#define RGBtosRGB(a) (((a) < 0.0031308f) ? (12.92f * (a)) : (1.055f * pow((a), 0.41666f) - 0.055f))
#define sRGBtoRGB(a) (((a) <= 0.04045f) ? ((a) / 12.92f) : (pow((((a) + 0.055f) / 1.055f), 2.4)) )
static ID_INLINE int VectorCompare4(const vec4_t v1, const vec4_t v2)
{
if(v1[0] != v2[0] || v1[1] != v2[1] || v1[2] != v2[2] || v1[3] != v2[3])

76
code/renderergl2/tr_image.c
View file

@ -1332,43 +1332,51 @@ static void R_MipMap2( byte *in, int inWidth, int inHeight ) {
static void R_MipMapsRGB( byte *in, int inWidth, int inHeight)
{
int i, j, k;
int outWidth, outHeight;
byte *temp;
int x, y, c, stride;
const byte *in2;
float total;
static float downmipSrgbLookup[256];
static int downmipSrgbLookupSet = 0;
byte *out = in;
outWidth = inWidth >> 1;
outHeight = inHeight >> 1;
temp = ri.Hunk_AllocateTempMemory( outWidth * outHeight * 4 );
for ( i = 0 ; i < outHeight ; i++ ) {
byte *outbyte = temp + ( i * outWidth ) * 4;
byte *inbyte1 = in + ( i * 2 * inWidth ) * 4;
byte *inbyte2 = in + ( (i * 2 + 1) * inWidth ) * 4;
for ( j = 0 ; j < outWidth ; j++ ) {
for ( k = 0 ; k < 3 ; k++ ) {
float total, current;
current = ByteToFloat(inbyte1[0]); total = sRGBtoRGB(current);
current = ByteToFloat(inbyte1[4]); total += sRGBtoRGB(current);
current = ByteToFloat(inbyte2[0]); total += sRGBtoRGB(current);
current = ByteToFloat(inbyte2[4]); total += sRGBtoRGB(current);
total *= 0.25f;
inbyte1++;
inbyte2++;
current = RGBtosRGB(total);
*outbyte++ = FloatToByte(current);
}
*outbyte++ = (inbyte1[0] + inbyte1[4] + inbyte2[0] + inbyte2[4]) >> 2;
inbyte1 += 5;
inbyte2 += 5;
}
if (!downmipSrgbLookupSet) {
for (x = 0; x < 256; x++)
downmipSrgbLookup[x] = ((x < 10) ? x / 3294.6f : powf((x / 255.0f + 0.055f) / 1.055f, 2.4f)) * 0.25f;
downmipSrgbLookupSet = 1;
}
Com_Memcpy( in, temp, outWidth * outHeight * 4 );
ri.Hunk_FreeTempMemory( temp );
if (inWidth == 1 && inHeight == 1)
return;
if (inWidth == 1 || inHeight == 1) {
for (x = (inWidth * inHeight) >> 1; x; x--) {
for (c = 3; c; c--, in++) {
total = (downmipSrgbLookup[*(in)] + downmipSrgbLookup[*(in + 4)]) * 2.0f;
*out++ = (byte)(powf(total, 1.0f / 2.2f) * 255.0f);
}
*out++ = (*(in) + *(in + 4)) >> 1; in += 5;
}
return;
}
stride = inWidth * 4;
inWidth >>= 1; inHeight >>= 1;
in2 = in + stride;
for (y = inHeight; y; y--, in += stride, in2 += stride) {
for (x = inWidth; x; x--) {
for (c = 3; c; c--, in++, in2++) {
total = downmipSrgbLookup[*(in)] + downmipSrgbLookup[*(in + 4)]
+ downmipSrgbLookup[*(in2)] + downmipSrgbLookup[*(in2 + 4)];
*out++ = (byte)(powf(total, 1.0f / 2.2f) * 255.0f);
}
*out++ = (*(in) + *(in + 4) + *(in2) + *(in2 + 4)) >> 2; in += 5, in2 += 5;
}
}
}
/*