From dcdffabfe69d0cecd2d8c0c1f217b884b20af643 Mon Sep 17 00:00:00 2001
From: Yuri Kunde Schlesner <yuriks@yuriks.net>
Date: Sun, 18 Dec 2016 23:43:37 -0800
Subject: VideoCore: Extract swrast-specific data from OutputVertex

---
 src/video_core/shader/shader.h | 49 +++++++++++-------------------------------
 1 file changed, 13 insertions(+), 36 deletions(-)

(limited to 'src/video_core/shader/shader.h')

diff --git a/src/video_core/shader/shader.h b/src/video_core/shader/shader.h
index 00bd723cf..b188d3edf 100644
--- a/src/video_core/shader/shader.h
+++ b/src/video_core/shader/shader.h
@@ -28,9 +28,6 @@ struct AttributeBuffer {
 };
 
 struct OutputVertex {
-    OutputVertex() = default;
-
-    // VS output attributes
     Math::Vec4<float24> pos;
     Math::Vec4<float24> quat;
     Math::Vec4<float24> color;
@@ -42,42 +39,22 @@ struct OutputVertex {
     INSERT_PADDING_WORDS(1);
     Math::Vec2<float24> tc2;
 
-    // Padding for optimal alignment
-    INSERT_PADDING_WORDS(4);
-
-    // Attributes used to store intermediate results
-
-    // position after perspective divide
-    Math::Vec3<float24> screenpos;
-    INSERT_PADDING_WORDS(1);
-
-    // Linear interpolation
-    // factor: 0=this, 1=vtx
-    void Lerp(float24 factor, const OutputVertex& vtx) {
-        pos = pos * factor + vtx.pos * (float24::FromFloat32(1) - factor);
-
-        // TODO: Should perform perspective correct interpolation here...
-        tc0 = tc0 * factor + vtx.tc0 * (float24::FromFloat32(1) - factor);
-        tc1 = tc1 * factor + vtx.tc1 * (float24::FromFloat32(1) - factor);
-        tc2 = tc2 * factor + vtx.tc2 * (float24::FromFloat32(1) - factor);
-
-        screenpos = screenpos * factor + vtx.screenpos * (float24::FromFloat32(1) - factor);
-
-        color = color * factor + vtx.color * (float24::FromFloat32(1) - factor);
-    }
-
-    // Linear interpolation
-    // factor: 0=v0, 1=v1
-    static OutputVertex Lerp(float24 factor, const OutputVertex& v0, const OutputVertex& v1) {
-        OutputVertex ret = v0;
-        ret.Lerp(factor, v1);
-        return ret;
-    }
-
     static OutputVertex FromAttributeBuffer(const Regs& regs, AttributeBuffer& output);
 };
+#define ASSERT_POS(var, pos)                                                                       \
+    static_assert(offsetof(OutputVertex, var) == pos * sizeof(float24), "Semantic at wrong "       \
+                                                                        "offset.")
+ASSERT_POS(pos, Regs::VSOutputAttributes::POSITION_X);
+ASSERT_POS(quat, Regs::VSOutputAttributes::QUATERNION_X);
+ASSERT_POS(color, Regs::VSOutputAttributes::COLOR_R);
+ASSERT_POS(tc0, Regs::VSOutputAttributes::TEXCOORD0_U);
+ASSERT_POS(tc1, Regs::VSOutputAttributes::TEXCOORD1_U);
+ASSERT_POS(tc0_w, Regs::VSOutputAttributes::TEXCOORD0_W);
+ASSERT_POS(view, Regs::VSOutputAttributes::VIEW_X);
+ASSERT_POS(tc2, Regs::VSOutputAttributes::TEXCOORD2_U);
+#undef ASSERT_POS
 static_assert(std::is_pod<OutputVertex>::value, "Structure is not POD");
-static_assert(sizeof(OutputVertex) == 32 * sizeof(float), "OutputVertex has invalid size");
+static_assert(sizeof(OutputVertex) == 24 * sizeof(float), "OutputVertex has invalid size");
 
 /**
  * This structure contains the state information that needs to be unique for a shader unit. The 3DS
-- 
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