From 28d1e73d2f1eb5d77568303050d254fd3b4df853 Mon Sep 17 00:00:00 2001
From: wwylele
Date: Thu, 1 Jun 2017 16:56:46 +0300
Subject: pica/rasterizer: implement/stub texture wrap mode 4-7

---
 src/video_core/swrasterizer/rasterizer.cpp | 20 ++++++++++++++++----
 src/video_core/swrasterizer/texturing.cpp  | 19 +++++++++++++++----
 2 files changed, 31 insertions(+), 8 deletions(-)

(limited to 'src/video_core/swrasterizer')

diff --git a/src/video_core/swrasterizer/rasterizer.cpp b/src/video_core/swrasterizer/rasterizer.cpp
index e9edf0360..908c7bb9e 100644
--- a/src/video_core/swrasterizer/rasterizer.cpp
+++ b/src/video_core/swrasterizer/rasterizer.cpp
@@ -307,10 +307,22 @@ static void ProcessTriangleInternal(const Vertex& v0, const Vertex& v1, const Ve
                 int t = (int)(v * float24::FromFloat32(static_cast<float>(texture.config.height)))
                             .ToFloat32();
 
-                if ((texture.config.wrap_s == TexturingRegs::TextureConfig::ClampToBorder &&
-                     (s < 0 || static_cast<u32>(s) >= texture.config.width)) ||
-                    (texture.config.wrap_t == TexturingRegs::TextureConfig::ClampToBorder &&
-                     (t < 0 || static_cast<u32>(t) >= texture.config.height))) {
+                bool use_border_s = false;
+                bool use_border_t = false;
+
+                if (texture.config.wrap_s == TexturingRegs::TextureConfig::ClampToBorder) {
+                    use_border_s = s < 0 || s >= static_cast<int>(texture.config.width);
+                } else if (texture.config.wrap_s == TexturingRegs::TextureConfig::ClampToBorder2) {
+                    use_border_s = s >= static_cast<int>(texture.config.width);
+                }
+
+                if (texture.config.wrap_t == TexturingRegs::TextureConfig::ClampToBorder) {
+                    use_border_t = t < 0 || t >= static_cast<int>(texture.config.height);
+                } else if (texture.config.wrap_t == TexturingRegs::TextureConfig::ClampToBorder2) {
+                    use_border_t = t >= static_cast<int>(texture.config.height);
+                }
+
+                if (use_border_s || use_border_t) {
                     auto border_color = texture.config.border_color;
                     texture_color[i] = {border_color.r, border_color.g, border_color.b,
                                         border_color.a};
diff --git a/src/video_core/swrasterizer/texturing.cpp b/src/video_core/swrasterizer/texturing.cpp
index aeb6aeb8c..4f02b93f2 100644
--- a/src/video_core/swrasterizer/texturing.cpp
+++ b/src/video_core/swrasterizer/texturing.cpp
@@ -18,22 +18,33 @@ using TevStageConfig = TexturingRegs::TevStageConfig;
 
 int GetWrappedTexCoord(TexturingRegs::TextureConfig::WrapMode mode, int val, unsigned size) {
     switch (mode) {
+    case TexturingRegs::TextureConfig::ClampToEdge2:
+        // For negative coordinate, ClampToEdge2 behaves the same as Repeat
+        if (val < 0) {
+            return static_cast<int>(static_cast<unsigned>(val) % size);
+        }
+    // [[fallthrough]]
     case TexturingRegs::TextureConfig::ClampToEdge:
         val = std::max(val, 0);
-        val = std::min(val, (int)size - 1);
+        val = std::min(val, static_cast<int>(size) - 1);
         return val;
 
     case TexturingRegs::TextureConfig::ClampToBorder:
         return val;
 
+    case TexturingRegs::TextureConfig::ClampToBorder2:
+    // For ClampToBorder2, the case of positive coordinate beyond the texture size is already
+    // handled outside. Here we only handle the negative coordinate in the same way as Repeat.
+    case TexturingRegs::TextureConfig::Repeat2:
+    case TexturingRegs::TextureConfig::Repeat3:
     case TexturingRegs::TextureConfig::Repeat:
-        return (int)((unsigned)val % size);
+        return static_cast<int>(static_cast<unsigned>(val) % size);
 
     case TexturingRegs::TextureConfig::MirroredRepeat: {
-        unsigned int coord = ((unsigned)val % (2 * size));
+        unsigned int coord = (static_cast<unsigned>(val) % (2 * size));
         if (coord >= size)
             coord = 2 * size - 1 - coord;
-        return (int)coord;
+        return static_cast<int>(coord);
     }
 
     default:
-- 
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