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OpenGL2: Store vertex colors and hdr lightmaps/lightgrid as RGBA16.

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This commit is contained in:
SmileTheory 2016-10-11 03:28:20 -07:00
parent 239f539702
commit aa79738c50
15 changed files with 240 additions and 184 deletions
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20
code/renderergl2/tr_extramath.c
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@ -201,7 +201,7 @@ int NextPowerOfTwo(int in)
union f32_u {
float f;
uint32_t i;
uint32_t ui;
struct {
unsigned int fraction:23;
unsigned int exponent:8;
@ -210,7 +210,7 @@ union f32_u {
};
union f16_u {
uint16_t i;
uint16_t ui;
struct {
unsigned int fraction:10;
unsigned int exponent:5;
@ -229,5 +229,19 @@ uint16_t FloatToHalf(float in)
f16.pack.fraction = f32.pack.fraction >> 13;
f16.pack.sign = f32.pack.sign;
return f16.i;
return f16.ui;
}
float HalfToFloat(uint16_t in)
{
union f32_u f32;
union f16_u f16;
f16.ui = in;
f32.pack.exponent = (int)(f16.pack.exponent) + 112;
f32.pack.fraction = f16.pack.fraction << 13;
f32.pack.sign = f16.pack.sign;
return f32.f;
}