1 files changed, 97 insertions, 0 deletions
diff --git a/Source/Core/VideoCommon/GeometryShaderManager.cpp b/Source/Core/VideoCommon/GeometryShaderManager.cpp
new file mode 100644
index 0000000000..09adad56c0
--- /dev/null
+++ b/Source/Core/VideoCommon/GeometryShaderManager.cpp
@@ -0,0 +1,97 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <cfloat>
+#include <cmath>
+
+#include "VideoCommon/BPMemory.h"
+#include "VideoCommon/GeometryShaderGen.h"
+#include "VideoCommon/GeometryShaderManager.h"
+#include "VideoCommon/VideoCommon.h"
+#include "VideoCommon/VideoConfig.h"
+#include "VideoCommon/XFMemory.h"
+
+static const int LINE_PT_TEX_OFFSETS[8] = {
+	0, 16, 8, 4, 2, 1, 1, 1
+};
+
+GeometryShaderConstants GeometryShaderManager::constants;
+bool GeometryShaderManager::dirty;
+
+void GeometryShaderManager::Init()
+{
+	memset(&constants, 0, sizeof(constants));
+
+	Dirty();
+}
+
+void GeometryShaderManager::Shutdown()
+{
+}
+
+void GeometryShaderManager::Dirty()
+{
+	SetViewportChanged();
+	SetProjectionChanged();
+	SetLinePtWidthChanged();
+
+	for (int i = 0; i < 8; i++)
+		SetTexCoordChanged(i);
+
+	dirty = true;
+}
+
+void GeometryShaderManager::SetViewportChanged()
+{
+	constants.lineptparams[0] = 2.0f * xfmem.viewport.wd;
+	constants.lineptparams[1] = -2.0f * xfmem.viewport.ht;
+	dirty = true;
+}
+
+void GeometryShaderManager::SetProjectionChanged()
+{
+	if (g_ActiveConfig.iStereoMode > 0 && xfmem.projection.type == GX_PERSPECTIVE)
+	{
+		float offset = (g_ActiveConfig.iStereoSeparation / 1000.0f) * (g_ActiveConfig.iStereoSeparationPercent / 100.0f);
+		constants.stereoparams[0] = (g_ActiveConfig.bStereoSwapEyes) ? offset : -offset;
+		constants.stereoparams[1] = (g_ActiveConfig.bStereoSwapEyes) ? -offset : offset;
+		constants.stereoparams[2] = (g_ActiveConfig.iStereoConvergence / 10.0f) * (g_ActiveConfig.iStereoConvergencePercent / 100.0f);
+	}
+	else
+	{
+		constants.stereoparams[0] = constants.stereoparams[1] = 0;
+	}
+
+	dirty = true;
+}
+
+void GeometryShaderManager::SetLinePtWidthChanged()
+{
+	constants.lineptparams[2] = bpmem.lineptwidth.linesize / 6.f;
+	constants.lineptparams[3] = bpmem.lineptwidth.pointsize / 6.f;
+	constants.texoffset[2] = LINE_PT_TEX_OFFSETS[bpmem.lineptwidth.lineoff];
+	constants.texoffset[3] = LINE_PT_TEX_OFFSETS[bpmem.lineptwidth.pointoff];
+	dirty = true;
+}
+
+void GeometryShaderManager::SetTexCoordChanged(u8 texmapid)
+{
+	TCoordInfo& tc = bpmem.texcoords[texmapid];
+	int bitmask = 1 << texmapid;
+	constants.texoffset[0] &= ~bitmask;
+	constants.texoffset[0] |= tc.s.line_offset << texmapid;
+	constants.texoffset[1] &= ~bitmask;
+	constants.texoffset[1] |= tc.s.point_offset << texmapid;
+	dirty = true;
+}
+
+void GeometryShaderManager::DoState(PointerWrap &p)
+{
+	if (p.GetMode() == PointerWrap::MODE_READ)
+	{
+		// Reload current state from global GPU state
+		// NOTE: This requires that all GPU memory has been loaded already.
+		Dirty();
+	}
+}