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Implement dual source blending to avoid unneeded alpha pass.

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this implementation does not work in windows xp (sorry no support for dual source blending there).
this should improve speed on older hardware or in newer hardware using super sampling.
disable partial fix for 4x supersampling as I'm interested in knowing the original issue with the implementation to fix it correctly.
remove the deprecation label from the plugin while I'm working on it.
This commit is contained in:
Rodolfo Bogado 2013-03-28 20:08:51 -03:00
commit 40d919b352
5 changed files with 92 additions and 44 deletions
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19
Source/Plugins/Plugin_VideoDX9/Src/main.cpp
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@ -89,7 +89,7 @@ std::string VideoBackend::GetName()
std::string VideoBackend::GetDisplayName()
{
return "Direct3D9 (deprecated)";
return "Direct3D9";
}
void InitBackendInfo()
@ -97,11 +97,24 @@ void InitBackendInfo()
DX9::D3D::Init();
const int shaderModel = ((DX9::D3D::GetCaps().PixelShaderVersion >> 8) & 0xFF);
const int maxConstants = (shaderModel < 3) ? 32 : ((shaderModel < 4) ? 224 : 65536);
g_Config.backend_info.APIType = shaderModel < 3 ? API_D3D9_SM20 :API_D3D9_SM30;
g_Config.backend_info.APIType = shaderModel < 3 ? API_D3D9_SM20 : API_D3D9_SM30;
g_Config.backend_info.bUseRGBATextures = false;
g_Config.backend_info.bUseMinimalMipCount = true;
g_Config.backend_info.bSupports3DVision = true;
g_Config.backend_info.bSupportsDualSourceBlend = false;
OSVERSIONINFO info;
ZeroMemory(&info, sizeof(OSVERSIONINFO));
info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (GetVersionEx(&info))
{
// dual source blending is only supported in windows 7 o newer. sorry xp users
g_Config.backend_info.bSupportsDualSourceBlend = info.dwPlatformId == VER_PLATFORM_WIN32_NT && info.dwMajorVersion > 5;
}
else
{
g_Config.backend_info.bSupportsDualSourceBlend = false;
}
g_Config.backend_info.bSupportsFormatReinterpretation = true;
g_Config.backend_info.bSupportsPixelLighting = C_PLIGHTS + 40 <= maxConstants && C_PMATERIALS + 4 <= maxConstants;