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r300-gallium: Be more Gallium-ish in some of the math.

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This commit is contained in:
Corbin Simpson 2009-02-28 09:12:16 -08:00
parent 3673fc35d6
commit d1559eac6d
1 changed files with 7 additions and 25 deletions
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32
src/gallium/drivers/r300/r300_state.c
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@ -32,21 +32,7 @@
#include "r300_state_shader.h"
/* r300_state: Functions used to intialize state context by translating
* Gallium state objects into semi-native r300 state objects.
*
* XXX break this file up into pieces if it gets too big! */
/* Pack a float into a dword. */
static uint32_t pack_float_32(float f)
{
union {
float f;
uint32_t u;
} u;
u.f = f;
return u.u;
}
* Gallium state objects into semi-native r300 state objects. */
/* Create a new blend state based on the CSO blend state.
*
@ -114,21 +100,17 @@ static void r300_set_blend_color(struct pipe_context* pipe,
const struct pipe_blend_color* color)
{
struct r300_context* r300 = r300_context(pipe);
uint32_t r, g, b, a;
ubyte ur, ug, ub, ua;
r = util_iround(color->color[0] * 1023.0f);
g = util_iround(color->color[1] * 1023.0f);
b = util_iround(color->color[2] * 1023.0f);
a = util_iround(color->color[3] * 1023.0f);
ur = float_to_ubyte(color->color[0]);
ug = float_to_ubyte(color->color[1]);
ub = float_to_ubyte(color->color[2]);
ua = float_to_ubyte(color->color[3]);
r300->blend_color_state->blend_color = (a << 24) | (r << 16) | (g << 8) | b;
util_pack_color(color->color, PIPE_FORMAT_A8R8G8B8_UNORM,
&r300->blend_color_state->blend_color);
/* XXX this is wrong */
r300->blend_color_state->blend_color_red_alpha = ur | (ua << 16);
r300->blend_color_state->blend_color_green_blue = ub | (ug << 16);
@ -391,15 +373,15 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
if (rs->polygon_offset_enable) {
rs->depth_offset_front = rs->depth_offset_back =
pack_float_32(state->offset_units);
fui(state->offset_units);
rs->depth_scale_front = rs->depth_scale_back =
pack_float_32(state->offset_scale);
fui(state->offset_scale);
}
if (state->line_stipple_enable) {
rs->line_stipple_config =
R300_GA_LINE_STIPPLE_CONFIG_LINE_RESET_LINE |
(pack_float_32((float)state->line_stipple_factor) &
(fui((float)state->line_stipple_factor) &
R300_GA_LINE_STIPPLE_CONFIG_STIPPLE_SCALE_MASK);
/* XXX this might need to be scaled up */
rs->line_stipple_value = state->line_stipple_pattern;