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Video Backends: Implement vertical scaling for xfb copies. This fixes the

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display of PAL games that run in 50hz mode.
This commit is contained in:
iwubcode
2017-07-02 21:24:20 -05:00
parent 5a372020ea
commit b285188de1
8 changed files with 65 additions and 34 deletions
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22
Source/Core/VideoBackends/Vulkan/TextureConverter.cpp
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@ -5,6 +5,7 @@
#include "VideoBackends/Vulkan/TextureConverter.h"
#include <algorithm>
#include <array>
#include <cstddef>
#include <cstring>
#include <string>
@ -32,6 +33,14 @@
namespace Vulkan
{
namespace
{
struct EFBEncodeParams
{
std::array<s32, 4> position_uniform;
float y_scale;
};
}
TextureConverter::TextureConverter()
{
}
@ -243,14 +252,19 @@ void TextureConverter::EncodeTextureToMemory(VkImageView src_texture, u8* dest_p
VK_NULL_HANDLE, shader);
// Uniform - int4 of left,top,native_width,scale
s32 position_uniform[4] = {src_rect.left, src_rect.top, static_cast<s32>(native_width),
scale_by_half ? 2 : 1};
draw.SetPushConstants(position_uniform, sizeof(position_uniform));
EFBEncodeParams encoder_params;
encoder_params.position_uniform[0] = src_rect.left;
encoder_params.position_uniform[1] = src_rect.top;
encoder_params.position_uniform[2] = static_cast<s32>(native_width);
encoder_params.position_uniform[3] = scale_by_half ? 2 : 1;
encoder_params.y_scale = params.y_scale;
draw.SetPushConstants(&encoder_params, sizeof(encoder_params));
// We also linear filtering for both box filtering and downsampling higher resolutions to 1x
// TODO: This only produces perfect downsampling for 2x IR, other resolutions will need more
// complex down filtering to average all pixels and produce the correct result.
bool linear_filter = (scale_by_half && !params.depth) || g_renderer->GetEFBScale() != 1;
bool linear_filter = (scale_by_half && !params.depth) || g_renderer->GetEFBScale() != 1 ||
params.y_scale > 1.0f;
draw.SetPSSampler(0, src_texture, linear_filter ? g_object_cache->GetLinearSampler() :
g_object_cache->GetPointSampler());