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DX11: Correct line width and point size by taking viewport rect into account. Twilight Princess map looks almost perfect except for the drop shadows around the borders: the lines are too skinny, but the corner points seem to be correct.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7418 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Nolan Check 2011-03-28 05:42:21 +00:00
parent 975ce523b6
commit 40b8db30e3
5 changed files with 40 additions and 14 deletions
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24
Source/Plugins/Plugin_VideoDX11/Src/LineGeometryShader.cpp
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@ -31,6 +31,8 @@ union LineGSParams
{
FLOAT LineWidth; // In units of 1/6 of an EFB pixel
FLOAT TexOffset;
FLOAT VpWidth; // Width and height of the viewport in EFB pixels
FLOAT VpHeight;
};
// Constant buffers must be a multiple of 16 bytes in size.
u8 pad[16]; // Pad to the next multiple of 16 bytes
@ -46,6 +48,8 @@ static const char LINE_GS_COMMON[] =
"{\n"
"float LineWidth;\n"
"float TexOffset;\n"
"float VpWidth;\n"
"float VpHeight;\n"
"} Params;\n"
"}\n"
@ -65,17 +69,17 @@ static const char LINE_GS_COMMON[] =
// horizontal depending the slope of the line.
"float2 offset;\n"
"float2 to = input[1].pos.xy - input[0].pos.xy;\n"
"float2 to = abs(input[1].pos.xy - input[0].pos.xy);\n"
// FIXME: What does real hardware do when line is at a 45-degree angle?
// FIXME: Lines aren't drawn at the correct width. See Twilight Princess map.
"if (abs(to.y) > abs(to.x)) {\n"
"if (Params.VpHeight*to.y > Params.VpWidth*to.x) {\n"
// Line is more tall. Extend geometry left and right.
// Lerp Params.LineWidth/2 from [0..640] to [-1..1]
"offset = float2(Params.LineWidth/640, 0);\n"
// Lerp Params.LineWidth/2 from [0..VpWidth] to [-1..1]
"offset = float2(Params.LineWidth/Params.VpWidth, 0);\n"
"} else {\n"
// Line is more wide. Extend geometry up and down.
// Lerp Params.LineWidth/2 from [0..528] to [1..-1]
"offset = float2(0, -Params.LineWidth/528);\n"
// Lerp Params.LineWidth/2 from [0..VpHeight] to [1..-1]
"offset = float2(0, -Params.LineWidth/Params.VpHeight);\n"
"}\n"
"l0.pos.xy -= offset * input[0].pos.w;\n"
@ -164,7 +168,8 @@ void LineGeometryShader::Shutdown()
SAFE_RELEASE(m_paramsBuffer);
}
bool LineGeometryShader::SetShader(u32 components, float lineWidth, float texOffset)
bool LineGeometryShader::SetShader(u32 components, float lineWidth,
float texOffset, float vpWidth, float vpHeight)
{
if (!m_ready)
return false;
@ -208,8 +213,13 @@ bool LineGeometryShader::SetShader(u32 components, float lineWidth, float texOff
LineGSParams params = { 0 };
params.LineWidth = lineWidth;
params.TexOffset = texOffset;
params.VpWidth = vpWidth;
params.VpHeight = vpHeight;
D3D::context->UpdateSubresource(m_paramsBuffer, 0, NULL, &params, 0, 0);
DEBUG_LOG(VIDEO, "Line params: width %f, texOffset %f, vpWidth %f, vpHeight %f",
lineWidth, texOffset, vpWidth, vpHeight);
D3D::context->GSSetShader(shaderIt->second, NULL, 0);
D3D::context->GSSetConstantBuffers(0, 1, &m_paramsBuffer);