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[d3d9] Optimize NV12 conversion to use a macropixel of [2, 1]
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@ -37,7 +37,7 @@ namespace dxvk {
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}
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}
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case D3D9ConversionFormat_NV12:
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case D3D9ConversionFormat_NV12:
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ConvertGenericFormat(conversionFormat, dstImage, dstSubresource, srcBuffer, VK_FORMAT_R8_UINT, 0, { 1u, 1u });
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ConvertGenericFormat(conversionFormat, dstImage, dstSubresource, srcBuffer, VK_FORMAT_R16_UINT, 0, { 2u, 1u });
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break;
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break;
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case D3D9ConversionFormat_L6V5U5:
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case D3D9ConversionFormat_L6V5U5:
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@ -16,6 +16,11 @@ float unpackUnorm(uint p) {
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return float(p) / 255.0;
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return float(p) / 255.0;
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}
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}
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vec2 unpackUnorm2x8(uint p) {
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uvec2 value = uvec2(p & 0xFF, p >> 8);
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return vec2(unpackUnorm(value.x), unpackUnorm(value.y));
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}
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mat3x4 g_yuv_to_rgb = {
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mat3x4 g_yuv_to_rgb = {
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{ 298 / 256, 0, 409 / 256, 0.5 },
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{ 298 / 256, 0, 409 / 256, 0.5 },
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{ 298 / 256, -100 / 256, -208 / 256, 0.5 },
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{ 298 / 256, -100 / 256, -208 / 256, 0.5 },
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@ -18,39 +18,46 @@ uniform u_info_t {
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uvec2 extent;
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uvec2 extent;
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} u_info;
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} u_info;
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float fetchUnorm(usamplerBuffer source, uint offset) {
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vec2 fetchUnorm2x8(usamplerBuffer source, uint offset) {
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return unpackUnorm(texelFetch(src, int(offset)).r);
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return unpackUnorm2x8(texelFetch(src, int(offset)).r);
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}
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}
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// Format is:
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// YYYYYYYYYYYYYYY...
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// YYYYYYYYYYYYYYY...
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// UVUVUVUVUVUVUVU...
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void main() {
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void main() {
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ivec3 thread_id = ivec3(gl_GlobalInvocationID);
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ivec3 thread_id = ivec3(gl_GlobalInvocationID);
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if (all(lessThan(thread_id.xy, u_info.extent))) {
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if (all(lessThan(thread_id.xy, u_info.extent))) {
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uvec2 pitch = uvec2(u_info.extent.x, u_info.extent.y);
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uvec2 pitch = uvec2(u_info.extent.x, u_info.extent.y);
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// Format is:
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// YYYYYYYYYYYYYYY...
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// UVUVUVUVUVUVUVU...
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uint offset = thread_id.x
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uint offset = thread_id.x
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+ thread_id.y * pitch.x;
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+ thread_id.y * pitch.x;
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float c0 = fetchUnorm(src, offset) - (16 / 255.0);
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// Fetch 2 luminance samples.
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vec2 y = fetchUnorm2x8(src, offset) - (16 / 255.0);
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// Floor .x to the nearest 2, because
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// Go into the second plane to get the chroma data.
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// UV data is in WORDs, and we want to get the color
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// UV data is subsampled as [2, 2]
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// for this pixel.
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// So we need to divide thread_id.y by 2.
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// Then divide thread_id.y by 2 because the macropixel
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// thread_id.x is already accounted for as we read uint16
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// layout for chroma data is [2, 2].
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offset = thread_id.x
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offset = (thread_id.x / 2) * 2
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+ thread_id.y / 2 * pitch.x
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+ thread_id.y / 2 * pitch.x
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+ pitch.x * pitch.y;
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+ pitch.x * pitch.y;
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float u = fetchUnorm(src, offset) - (128 / 255.0);
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vec2 uv = fetchUnorm2x8(src, offset) - (128 / 255.0);
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float v = fetchUnorm(src, offset + 1) - (128 / 255.0);
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// The NV12 format seems to use the BT.703 color space.
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// The NV12 format seems to use the BT.703 color space.
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vec4 color0 = convertBT_703(vec3(c0, u, v));
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vec4 color0 = convertBT_703(vec3(y.x, uv.x, uv.y));
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vec4 color1 = convertBT_703(vec3(y.y, uv.x, uv.y));
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imageStore(dst, thread_id.xy, color0);
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// We write as a macropixel of [2, 1]
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// So write out 2 pixels in this run.
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ivec2 writePos = thread_id.xy * ivec2(2, 1);
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imageStore(dst, ivec2(writePos.x, writePos.y), color0);
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imageStore(dst, ivec2(writePos.x + 1, writePos.y), color1);
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}
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}
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}
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}
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