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Differential D317 Diff 1214 intern/cycles/kernel/svm/svm_image.h

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intern/cycles/kernel/svm/svm_image.h

Show First 20 Lines • Show All 54 Lines • ▼ Show 20 Lines if(id < TEX_NUM_FLOAT_IMAGES)
return make_float4(1.0f, 0.0f, 1.0f, 1.0f); return make_float4(1.0f, 0.0f, 1.0f, 1.0f);
id -= TEX_NUM_FLOAT_IMAGES; id -= TEX_NUM_FLOAT_IMAGES;
uint4 info = kernel_tex_fetch(__tex_image_packed_info, id); uint4 info = kernel_tex_fetch(__tex_image_packed_info, id);
uint width = info.x; uint width = info.x;
uint height = info.y; uint height = info.y;
uint offset = info.z; uint offset = info.z;
uint periodic = info.w; uint periodic = (info.w & 0x1);
uint interpolation = info.w >> 1;
int ix, iy, nix, niy; int ix, iy, nix, niy;
float tx = svm_image_texture_frac(x*width, &ix); float tx = svm_image_texture_frac(x*width, &ix);
float ty = svm_image_texture_frac(y*height, &iy); float ty = svm_image_texture_frac(y*height, &iy);
if(periodic) { if(periodic) {
ix = svm_image_texture_wrap_periodic(ix, width); ix = svm_image_texture_wrap_periodic(ix, width);
iy = svm_image_texture_wrap_periodic(iy, height); iy = svm_image_texture_wrap_periodic(iy, height);
nix = svm_image_texture_wrap_periodic(ix+1, width); nix = svm_image_texture_wrap_periodic(ix+1, width);
niy = svm_image_texture_wrap_periodic(iy+1, height); niy = svm_image_texture_wrap_periodic(iy+1, height);
} }
else { else {
ix = svm_image_texture_wrap_clamp(ix, width); ix = svm_image_texture_wrap_clamp(ix, width);
iy = svm_image_texture_wrap_clamp(iy, height); iy = svm_image_texture_wrap_clamp(iy, height);
nix = svm_image_texture_wrap_clamp(ix+1, width); nix = svm_image_texture_wrap_clamp(ix+1, width);
niy = svm_image_texture_wrap_clamp(iy+1, height); niy = svm_image_texture_wrap_clamp(iy+1, height);
} }
float4 r = (1.0f - ty)*(1.0f - tx)*svm_image_texture_read(kg, offset + ix + iy*width); float4 r;
if (interpolation == INTERPOLATION_CLOSEST){
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r = svm_image_texture_read(kg, offset + ix + iy*width);
}
else { /* We default to linear interpolation if it is not closest */
r = (1.0f - ty)*(1.0f - tx)*svm_image_texture_read(kg, offset + ix + iy*width);
r += (1.0f - ty)*tx*svm_image_texture_read(kg, offset + nix + iy*width); r += (1.0f - ty)*tx*svm_image_texture_read(kg, offset + nix + iy*width);
r += ty*(1.0f - tx)*svm_image_texture_read(kg, offset + ix + niy*width); r += ty*(1.0f - tx)*svm_image_texture_read(kg, offset + ix + niy*width);
r += ty*tx*svm_image_texture_read(kg, offset + nix + niy*width); r += ty*tx*svm_image_texture_read(kg, offset + nix + niy*width);
}
if(use_alpha && r.w != 1.0f && r.w != 0.0f) { if(use_alpha && r.w != 1.0f && r.w != 0.0f) {
float invw = 1.0f/r.w; float invw = 1.0f/r.w;
r.x *= invw; r.x *= invw;
r.y *= invw; r.y *= invw;
r.z *= invw; r.z *= invw;
if(id >= TEX_NUM_FLOAT_IMAGES) { if(id >= TEX_NUM_FLOAT_IMAGES) {
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