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r300: Moved r300PackFloat24 near r300PackFloat32.

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This commit is contained in:
Oliver McFadden 2007-05-11 23:32:03 +00:00
parent 64b03f33ee
commit dac5303692
2 changed files with 31 additions and 31 deletions
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31
src/mesa/drivers/dri/r300/r300_context.h
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@ -102,6 +102,37 @@ static __inline__ uint32_t r300PackFloat32(float fl)
return u.u;
}
/* This is probably wrong for some values, I need to test this
* some more. Range checking would be a good idea also..
*
* But it works for most things. I'll fix it later if someone
* else with a better clue doesn't
*/
static __inline__ uint32_t r300PackFloat24(float f)
{
float mantissa;
int exponent;
uint32_t float24 = 0;
if (f == 0.0)
return 0;
mantissa = frexpf(f, &exponent);
/* Handle -ve */
if (mantissa < 0) {
float24 |= (1 << 23);
mantissa = mantissa * -1.0;
}
/* Handle exponent, bias of 63 */
exponent += 62;
float24 |= (exponent << 16);
/* Kill 7 LSB of mantissa */
float24 |= (r300PackFloat32(mantissa) & 0x7FFFFF) >> 7;
return float24;
}
/************ DMA BUFFERS **************/
/* Need refcounting on dma buffers:

31
src/mesa/drivers/dri/r300/r300_state.c
View file

@ -1873,37 +1873,6 @@ void r300UpdateShaderStates(r300ContextPtr rmesa)
r300SetupRSUnit(ctx);
}
/* This is probably wrong for some values, I need to test this
* some more. Range checking would be a good idea also..
*
* But it works for most things. I'll fix it later if someone
* else with a better clue doesn't
*/
static unsigned int r300PackFloat24(float f)
{
float mantissa;
int exponent;
unsigned int float24 = 0;
if (f == 0.0)
return 0;
mantissa = frexpf(f, &exponent);
/* Handle -ve */
if (mantissa < 0) {
float24 |= (1 << 23);
mantissa = mantissa * -1.0;
}
/* Handle exponent, bias of 63 */
exponent += 62;
float24 |= (exponent << 16);
/* Kill 7 LSB of mantissa */
float24 |= (r300PackFloat32(mantissa) & 0x7FFFFF) >> 7;
return float24;
}
void r300SetupPixelShader(r300ContextPtr rmesa)
{
GLcontext *ctx = rmesa->radeon.glCtx;