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[d3d11] Don't sample gamma texture if the gamma curve is identity

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Saves some GPU time in games that don't use DXGI gamma control at all.
This commit is contained in:
Philip Rebohle 2019-03-24 18:02:19 +01:00
parent 73bb0d8ae2
commit be1832a348
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GPG Key ID: C8CC613427A31C99
3 changed files with 32 additions and 19 deletions
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33
src/d3d11/d3d11_swapchain.cpp
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@ -35,8 +35,6 @@ namespace dxvk {
InitSamplers();
InitShaders();
SetGammaControl(0, nullptr);
// The present fence seems to introduce stutter on ANV
if (m_device->adapter()->matchesDriver(DxvkGpuVendor::Intel, VK_DRIVER_ID_INTEL_OPEN_SOURCE_MESA_KHR, 0, 0))
m_usePresentFence = false;
@ -135,31 +133,34 @@ namespace dxvk {
HRESULT STDMETHODCALLTYPE D3D11SwapChain::SetGammaControl(
UINT NumControlPoints,
const DXGI_RGB* pControlPoints) {
if (NumControlPoints > 0) {
bool isIdentity = true;
if (NumControlPoints > 1) {
std::array<D3D11_VK_GAMMA_CP, 1025> cp;
if (NumControlPoints > cp.size())
return E_INVALIDARG;
for (uint32_t i = 0; i < NumControlPoints; i++) {
uint16_t identity = MapGammaControlPoint(float(i) / float(NumControlPoints - 1));
cp[i].R = MapGammaControlPoint(pControlPoints[i].Red);
cp[i].G = MapGammaControlPoint(pControlPoints[i].Green);
cp[i].B = MapGammaControlPoint(pControlPoints[i].Blue);
cp[i].A = 0;
isIdentity &= cp[i].R == identity
&& cp[i].G == identity
&& cp[i].B == identity;
}
CreateGammaTexture(NumControlPoints, cp.data());
} else {
std::array<D3D11_VK_GAMMA_CP, 256> cp;
for (uint32_t i = 0; i < cp.size(); i++) {
const uint16_t value = 257 * i;
cp[i] = { value, value, value, 0 };
}
CreateGammaTexture(cp.size(), cp.data());
if (!isIdentity)
CreateGammaTexture(NumControlPoints, cp.data());
}
if (isIdentity)
DestroyGammaTexture();
return S_OK;
}
@ -570,6 +571,12 @@ namespace dxvk {
}
void D3D11SwapChain::DestroyGammaTexture() {
m_gammaTexture = nullptr;
m_gammaTextureView = nullptr;
}
void D3D11SwapChain::CreateHud() {
m_hud = hud::Hud::createHud(m_device);
}

2
src/d3d11/d3d11_swapchain.h
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@ -139,6 +139,8 @@ namespace dxvk {
UINT NumControlPoints,
const D3D11_VK_GAMMA_CP* pControlPoints);
void DestroyGammaTexture();
void CreateHud();
void InitRenderState();

16
src/dxgi/shaders/dxgi_presenter_frag.frag
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@ -1,5 +1,7 @@
#version 450
layout(constant_id = 3) const bool s_gamma_bound = false;
layout(binding = 0) uniform sampler s_sampler;
layout(binding = 1) uniform texture2D t_texture;
@ -10,11 +12,13 @@ layout(location = 0) in vec2 i_texcoord;
layout(location = 0) out vec4 o_color;
void main() {
vec4 color = texture(sampler2D(t_texture, s_sampler), i_texcoord);
o_color = texture(sampler2D(t_texture, s_sampler), i_texcoord);
o_color = vec4(
texture(sampler1D(t_gamma, s_gamma), color.r).r,
texture(sampler1D(t_gamma, s_gamma), color.g).g,
texture(sampler1D(t_gamma, s_gamma), color.b).b,
color.a);
if (s_gamma_bound) {
o_color = vec4(
texture(sampler1D(t_gamma, s_gamma), o_color.r).r,
texture(sampler1D(t_gamma, s_gamma), o_color.g).g,
texture(sampler1D(t_gamma, s_gamma), o_color.b).b,
o_color.a);
}
}