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Flat (pre-packed int) palettes in deferred mode.

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This commit is contained in:
Steven Robertson
2011-12-08 20:44:02 -05:00
parent b76208078f
commit d3ee6f36c2
4 changed files with 147 additions and 98 deletions
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55
cuburn/code/interp.py
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@ -254,10 +254,34 @@ void interp_{{tname}}({{tname}}* out, float *times, float *knots,
{{endfor}}
}
__global__
void interp_palette_hsv_flat(mwc_st *rctxs,
const float *times, const float4 *sources,
float tstart, float tstep) {
int gid = blockIdx.x * blockDim.x + threadIdx.x;
mwc_st rctx = rctxs[gid];
float time = tstart + blockIdx.x * tstep;
float4 rgba = interp_color_hsv(times, sources, time);
// TODO: use YUV; pack Y at full precision, UV at quarter
uint2 out;
uint32_t r = min(255, (uint32_t) (rgba.x * 255.0f + 0.49f * mwc_next_11(rctx)));
uint32_t g = min(255, (uint32_t) (rgba.y * 255.0f + 0.49f * mwc_next_11(rctx)));
uint32_t b = min(255, (uint32_t) (rgba.z * 255.0f + 0.49f * mwc_next_11(rctx)));
out.x = (1 << 22) | (r << 4);
out.y = (g << 18) | b;
surf2Dwrite(out, flatpal, 8 * threadIdx.x, blockIdx.x);
rctxs[gid] = rctx;
}
""")
_decls = Template(r"""
surface<void, cudaSurfaceType2D> flatpal;
typedef struct {
{{for name in packed}}
float {{'_'.join(name)}};
@ -314,18 +338,15 @@ void test_cr(const float *times, const float *knots, const float *t, float *r) {
r[i] = catmull_rom(times, knots, t[i]);
}
__global__
void interp_palette_hsv(uchar4 *outs, const float *times, const float4 *sources,
float tstart, float tstep) {
float time = tstart + blockIdx.x * tstep;
__device__
float4 interp_color_hsv(const float *times, const float4 *sources, float time) {
int idx = fmaxf(bitwise_binsearch(times, time) + 1, 1);
float lf = (times[idx] - time) / (times[idx] - times[idx-1]);
float rf = 1.0f - lf;
float4 left = sources[blockDim.x * (idx - 1) + threadIdx.x];
float4 right = sources[blockDim.x * (idx) + threadIdx.x];
float lf = (times[idx] - time) / (times[idx] - times[idx-1]);
float rf = 1.0f - lf;
float3 lhsv = rgb2hsv(make_float3(left.x, left.y, left.z));
float3 rhsv = rgb2hsv(make_float3(right.x, right.y, right.z));
@ -344,15 +365,25 @@ void interp_palette_hsv(uchar4 *outs, const float *times, const float4 *sources,
hsv.x -= 6.0f;
if (hsv.x < 0.0f)
hsv.x += 6.0f;
float3 rgb = hsv2rgb(hsv);
return make_float4(rgb.x, rgb.y, rgb.z, left.w * lf + right.w * rf);
}
__global__
void interp_palette_hsv(uchar4 *outs,
const float *times, const float4 *sources,
float tstart, float tstep) {
float time = tstart + blockIdx.x * tstep;
float4 rgba = interp_color_hsv(times, sources, time);
uchar4 out;
out.x = rgb.x * 255.0f;
out.y = rgb.y * 255.0f;
out.z = rgb.z * 255.0f;
out.w = 255.0f * (left.z * lf + right.z * rf);
out.x = rgba.x * 255.0f;
out.y = rgba.y * 255.0f;
out.z = rgba.z * 255.0f;
out.w = rgba.w * 255.0f;
outs[blockDim.x * blockIdx.x + threadIdx.x] = out;
}
""")