VideoCommon: Merge LineGeometryShader into GeometryShaderGen.

This adds line-width emulation support to OpenGL.

1 files changed, 0 insertions, 239 deletions

diff --git a/Source/Core/VideoBackends/D3D/LineGeometryShader.cpp b/Source/Core/VideoBackends/D3D/LineGeometryShader.cpp
deleted file mode 100644
index 7fcb02ff8d..0000000000
--- a/Source/Core/VideoBackends/D3D/LineGeometryShader.cpp
+++ /dev/null
@@ -1,239 +0,0 @@
-// Copyright 2013 Dolphin Emulator Project
-// Licensed under GPLv2
-// Refer to the license.txt file included.
-
-#include <sstream>
-
-#include "VideoBackends/D3D/D3DBase.h"
-#include "VideoBackends/D3D/D3DShader.h"
-#include "VideoBackends/D3D/D3DState.h"
-#include "VideoBackends/D3D/LineGeometryShader.h"
-#include "VideoCommon/VertexShaderGen.h"
-
-namespace DX11
-{
-
-struct 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;
-	FLOAT TexOffsetEnable[8]; // For each tex coordinate, whether to apply offset to it (1 on, 0 off)
-};
-
-union LineGSParams_Padded
-{
-	LineGSParams params;
-	// Constant buffers must be a multiple of 16 bytes in size.
-	u8 pad[(sizeof(LineGSParams) + 15) & ~15];
-};
-
-static const char LINE_GS_COMMON[] =
-// The struct VS_OUTPUT used by the vertex shader goes here.
-"// dolphin-emu line geometry shader common part\n"
-
-"cbuffer cbParams : register(b0)\n"
-"{\n"
-	"struct\n" // Should match LineGSParams above
-	"{\n"
-		"float LineWidth;\n"
-		"float TexOffset;\n"
-		"float VpWidth;\n"
-		"float VpHeight;\n"
-		"float TexOffsetEnable[8];\n"
-	"} Params;\n"
-"}\n"
-
-"[maxvertexcount(4)]\n"
-"void main(line VS_OUTPUT input[2], inout TriangleStream<VS_OUTPUT> outStream)\n"
-"{\n"
-	// Pretend input[0] is on the bottom and input[1] is on top.
-	// We generate vertices to the left and right.
-
-	"VS_OUTPUT l0 = input[0];\n"
-	"VS_OUTPUT r0 = l0;\n"
-	"VS_OUTPUT l1 = input[1];\n"
-	"VS_OUTPUT r1 = l1;\n"
-
-	// GameCube/Wii's line drawing algorithm is a little quirky. It does not
-	// use the correct line caps. Instead, the line caps are vertical or
-	// horizontal depending the slope of the line.
-
-	"float2 offset;\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 (Params.VpHeight*to.y > Params.VpWidth*to.x) {\n"
-		// Line is more tall. Extend geometry left and right.
-		// 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..VpHeight] to [1..-1]
-		"offset = float2(0, -Params.LineWidth/Params.VpHeight);\n"
-	"}\n"
-
-	"l0.pos.xy -= offset * input[0].pos.w;\n"
-	"r0.pos.xy += offset * input[0].pos.w;\n"
-	"l1.pos.xy -= offset * input[1].pos.w;\n"
-	"r1.pos.xy += offset * input[1].pos.w;\n"
-
-"#ifndef NUM_TEXCOORDS\n"
-"#error NUM_TEXCOORDS not defined\n"
-"#endif\n"
-
-	// Apply TexOffset to all tex coordinates in the vertex.
-	// They can each be enabled separately.
-"#if NUM_TEXCOORDS >= 1\n"
-	"r0.tex0.x += Params.TexOffset * Params.TexOffsetEnable[0];\n"
-	"r1.tex0.x += Params.TexOffset * Params.TexOffsetEnable[0];\n"
-"#endif\n"
-"#if NUM_TEXCOORDS >= 2\n"
-	"r0.tex1.x += Params.TexOffset * Params.TexOffsetEnable[1];\n"
-	"r1.tex1.x += Params.TexOffset * Params.TexOffsetEnable[1];\n"
-"#endif\n"
-"#if NUM_TEXCOORDS >= 3\n"
-	"r0.tex2.x += Params.TexOffset * Params.TexOffsetEnable[2];\n"
-	"r1.tex2.x += Params.TexOffset * Params.TexOffsetEnable[2];\n"
-"#endif\n"
-"#if NUM_TEXCOORDS >= 4\n"
-	"r0.tex3.x += Params.TexOffset * Params.TexOffsetEnable[3];\n"
-	"r1.tex3.x += Params.TexOffset * Params.TexOffsetEnable[3];\n"
-"#endif\n"
-"#if NUM_TEXCOORDS >= 5\n"
-	"r0.tex4.x += Params.TexOffset * Params.TexOffsetEnable[4];\n"
-	"r1.tex4.x += Params.TexOffset * Params.TexOffsetEnable[4];\n"
-"#endif\n"
-"#if NUM_TEXCOORDS >= 6\n"
-	"r0.tex5.x += Params.TexOffset * Params.TexOffsetEnable[5];\n"
-	"r1.tex5.x += Params.TexOffset * Params.TexOffsetEnable[5];\n"
-"#endif\n"
-"#if NUM_TEXCOORDS >= 7\n"
-	"r0.tex6.x += Params.TexOffset * Params.TexOffsetEnable[6];\n"
-	"r1.tex6.x += Params.TexOffset * Params.TexOffsetEnable[6];\n"
-"#endif\n"
-"#if NUM_TEXCOORDS >= 8\n"
-	"r0.tex7.x += Params.TexOffset * Params.TexOffsetEnable[7];\n"
-	"r1.tex7.x += Params.TexOffset * Params.TexOffsetEnable[7];\n"
-"#endif\n"
-
-	"outStream.Append(l0);\n"
-	"outStream.Append(r0);\n"
-	"outStream.Append(l1);\n"
-	"outStream.Append(r1);\n"
-"}\n"
-;
-
-LineGeometryShader::LineGeometryShader()
-	: m_ready(false), m_paramsBuffer(nullptr)
-{ }
-
-void LineGeometryShader::Init()
-{
-	m_ready = false;
-
-	HRESULT hr;
-
-	// Create constant buffer for uploading data to geometry shader
-
-	D3D11_BUFFER_DESC bd = CD3D11_BUFFER_DESC(sizeof(LineGSParams_Padded),
-		D3D11_BIND_CONSTANT_BUFFER, D3D11_USAGE_DYNAMIC, D3D11_CPU_ACCESS_WRITE);
-	hr = D3D::device->CreateBuffer(&bd, nullptr, &m_paramsBuffer);
-	CHECK(SUCCEEDED(hr), "create line geometry shader params buffer");
-	D3D::SetDebugObjectName(m_paramsBuffer, "line geometry shader params buffer");
-
-	m_ready = true;
-}
-
-void LineGeometryShader::Shutdown()
-{
-	m_ready = false;
-
-	for (auto& it : m_shaders)
-	{
-		SAFE_RELEASE(it.second);
-	}
-	m_shaders.clear();
-
-	SAFE_RELEASE(m_paramsBuffer);
-}
-
-bool LineGeometryShader::SetShader(u32 components, float lineWidth,
-	float texOffset, float vpWidth, float vpHeight, const bool* texOffsetEnable)
-{
-	if (!m_ready)
-		return false;
-
-	// Make sure geometry shader for "components" is available
-	ComboMap::iterator shaderIt = m_shaders.find(components);
-	if (shaderIt == m_shaders.end())
-	{
-		// Generate new shader. Warning: not thread-safe.
-		static char buffer[16384];
-		ShaderCode code;
-		code.SetBuffer(buffer);
-		GenerateVSOutputStruct<ShaderCode>(code, API_D3D);
-		code.Write("\n%s", LINE_GS_COMMON);
-
-		std::stringstream numTexCoordsStream;
-		numTexCoordsStream << xfmem.numTexGen.numTexGens;
-
-		INFO_LOG(VIDEO, "Compiling line geometry shader for components 0x%.08X (num texcoords %d)",
-			components, xfmem.numTexGen.numTexGens);
-
-		const std::string& numTexCoordsStr = numTexCoordsStream.str();
-		D3D_SHADER_MACRO macros[] = {
-			{ "NUM_TEXCOORDS", numTexCoordsStr.c_str() },
-			{ nullptr, nullptr }
-		};
-		ID3D11GeometryShader* newShader = D3D::CompileAndCreateGeometryShader(code.GetBuffer(), macros);
-		if (!newShader)
-		{
-			WARN_LOG(VIDEO, "Line geometry shader for components 0x%.08X failed to compile", components);
-			// Add dummy shader to prevent trying to compile again
-			m_shaders[components] = nullptr;
-			return false;
-		}
-
-		shaderIt = m_shaders.insert(std::make_pair(components, newShader)).first;
-	}
-
-	if (shaderIt != m_shaders.end())
-	{
-		if (shaderIt->second)
-		{
-			D3D11_MAPPED_SUBRESOURCE map;
-			HRESULT hr = D3D::context->Map(m_paramsBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &map);
-			if (SUCCEEDED(hr))
-			{
-				LineGSParams* params = (LineGSParams*)map.pData;
-				params->LineWidth = lineWidth;
-
-				params->TexOffset = texOffset;
-				params->VpWidth = vpWidth;
-				params->VpHeight = vpHeight;
-				for (int i = 0; i < 8; ++i)
-					params->TexOffsetEnable[i] = texOffsetEnable[i] ? 1.f : 0.f;
-
-				D3D::context->Unmap(m_paramsBuffer, 0);
-			}
-			else
-				ERROR_LOG(VIDEO, "Failed to map line gs params buffer");
-
-			DEBUG_LOG(VIDEO, "Line params: width %f, texOffset %f, vpWidth %f, vpHeight %f",
-				lineWidth, texOffset, vpWidth, vpHeight);
-
-			D3D::stateman->SetGeometryShader(shaderIt->second);
-			D3D::stateman->SetGeometryConstants(m_paramsBuffer);
-
-			return true;
-		}
-		else
-			return false;
-	}
-	else
-		return false;
-}
-
-}