From 3f69c2039de1c3d084ac2c9eb0aa9315490346bf Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Tue, 21 Jul 2015 19:38:59 -0400
Subject: Shader: Define a common interface for running vertex shader programs.

---
 src/video_core/pica.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

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

diff --git a/src/video_core/pica.h b/src/video_core/pica.h
index 34b02b2f8..6ce90f95a 100644
--- a/src/video_core/pica.h
+++ b/src/video_core/pica.h
@@ -1083,6 +1083,7 @@ private:
     // TODO: Perform proper arithmetic on this!
     float value;
 };
+static_assert(sizeof(float24) == sizeof(float), "Shader JIT assumes float24 is implemented as a 32-bit float");
 
 /// Struct used to describe current Pica state
 struct State {
@@ -1092,7 +1093,10 @@ struct State {
     /// Vertex shader memory
     struct ShaderSetup {
         struct {
-            Math::Vec4<float24> f[96];
+            // The float uniforms are accessed by the shader JIT using SSE instructions, and are
+            // therefore required to be 16-byte aligned.
+            Math::Vec4<float24> MEMORY_ALIGNED16(f[96]);
+
             std::array<bool, 16> b;
             std::array<Math::Vec4<u8>, 4> i;
         } uniforms;
-- 
cgit v1.2.3