diff options
author | Oliver McFadden <[email protected]> | 2007-05-11 23:32:03 +0000 |
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committer | Oliver McFadden <[email protected]> | 2007-05-11 23:32:03 +0000 |
commit | dac5303692726582d2fac2d9e9b620e3105ff8c3 (patch) | |
tree | c016eab556e82c59cd4e2cf6753cd52a78aabd6d /src/mesa | |
parent | 64b03f33eeb2f57f1c7a528d011137c6f2612fb0 (diff) |
r300: Moved r300PackFloat24 near r300PackFloat32.
Diffstat (limited to 'src/mesa')
-rw-r--r-- | src/mesa/drivers/dri/r300/r300_context.h | 31 | ||||
-rw-r--r-- | src/mesa/drivers/dri/r300/r300_state.c | 31 |
2 files changed, 31 insertions, 31 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_context.h b/src/mesa/drivers/dri/r300/r300_context.h index c287871b370..2408497c483 100644 --- a/src/mesa/drivers/dri/r300/r300_context.h +++ b/src/mesa/drivers/dri/r300/r300_context.h @@ -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: diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c index 625797b4b9f..c45c571d7b3 100644 --- a/src/mesa/drivers/dri/r300/r300_state.c +++ b/src/mesa/drivers/dri/r300/r300_state.c @@ -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; |