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Video Common: Add XFB decoding via the GPU

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This commit is contained in:
iwubcode
2017-08-08 00:09:25 -05:00
parent 4d13f69dc1
commit 76b775d5be
5 changed files with 51 additions and 1 deletions
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29
Source/Core/VideoCommon/TextureConversionShader.cpp
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@ -1262,12 +1262,41 @@ static const std::map<TextureFormat, DecodingShaderInfo> s_decoding_shader_info{
vec4 norm_color = GetPaletteColorNormalized(index);
imageStore(output_image, ivec3(ivec2(coords), 0), norm_color);
}
)"}},
// We do the inverse BT.601 conversion for YCbCr to RGB
// http://www.equasys.de/colorconversion.html#YCbCr-RGBColorFormatConversion
{ TextureFormat::XFB,
{ BUFFER_FORMAT_RGBA8_UINT, 0, 8, 8, false,
R"(
layout(local_size_x = 8, local_size_y = 8) in;
void main()
{
uvec2 uv = gl_GlobalInvocationID.xy;
int buffer_pos = int(u_src_offset + (uv.y * u_src_row_stride) + (uv.x / 2));
vec4 yuyv = texelFetch(s_input_buffer, buffer_pos);
float y = mix(yuyv.r, yuyv.b, (uv.x & 1u) == 1u);
float yComp = 1.164 * (y - 16);
float uComp = yuyv.g - 128;
float vComp = yuyv.a - 128;
vec4 rgb = vec4(yComp + (1.596 * vComp),
yComp - (0.813 * vComp) - (0.391 * uComp),
yComp + (2.018 * uComp),
255.0);
vec4 rgba_norm = rgb / 255.0;
imageStore(output_image, ivec3(ivec2(uv), 0), rgba_norm);
}
)"}}};
static const std::array<u32, BUFFER_FORMAT_COUNT> s_buffer_bytes_per_texel = {{
1, // BUFFER_FORMAT_R8_UINT
2, // BUFFER_FORMAT_R16_UINT
8, // BUFFER_FORMAT_R32G32_UINT
4, // BUFFER_FORMAT_RGBA8_UINT
}};
const DecodingShaderInfo* GetDecodingShaderInfo(TextureFormat format)