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libobs: Add Planar444 conversion to effect

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jp9000 2015-04-16 22:43:46 -07:00
parent 95d96f043b
commit 7bc8dc3471
1 changed files with 54 additions and 0 deletions
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54
libobs/data/format_conversion.effect
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@ -190,6 +190,51 @@ float4 PSPlanar420(VertInOut vert_in) : TARGET
return out_val[2];
}
float4 PSPlanar444(VertInOut vert_in) : TARGET
{
float v_mul = floor(vert_in.uv.y * input_height);
float byte_offset = floor((v_mul + vert_in.uv.x) * width) * 4.0;
byte_offset += PRECISION_OFFSET;
float new_byte_offset = byte_offset;
if (byte_offset >= v_plane_offset)
new_byte_offset -= v_plane_offset;
else if (byte_offset >= u_plane_offset)
new_byte_offset -= u_plane_offset;
float2 sample_pos[4];
float u_val = floor(fmod(new_byte_offset, width)) * width_i;
float v_val = floor(new_byte_offset * width_i) * height_i;
/* move to texel centers to sample the 4 pixels properly */
u_val += width_i * 0.5;
v_val += height_i * 0.5;
sample_pos[0] = float2(u_val, v_val);
sample_pos[1] = float2(u_val += width_i, v_val);
sample_pos[2] = float2(u_val += width_i, v_val);
sample_pos[3] = float2(u_val + width_i, v_val);
float4x4 out_val = float4x4(
image.Sample(def_sampler, sample_pos[0]),
image.Sample(def_sampler, sample_pos[1]),
image.Sample(def_sampler, sample_pos[2]),
image.Sample(def_sampler, sample_pos[3])
);
out_val = transpose(out_val);
if (byte_offset < u_plane_offset)
return out_val[1];
else if (byte_offset < v_plane_offset)
return out_val[0];
else
return out_val[2];
}
float4 PSPacked422_Reverse(VertInOut vert_in, int u_pos, int v_pos,
int y0_pos, int y1_pos) : TARGET
{
@ -271,6 +316,15 @@ technique Planar420
}
}
technique Planar444
{
pass
{
vertex_shader = VSDefault(vert_in);
pixel_shader = PSPlanar444(vert_in);
}
}
technique NV12
{
pass