From f9c859c8ba46113896f0e3be43b590a44d45692a Mon Sep 17 00:00:00 2001 From: riperiperi Date: Sun, 29 Mar 2020 17:24:54 +0100 Subject: [PATCH] Index constant buffer vec4s using ternary expressions. (#1015) * Index constant buffer vec4s using ternary expressions. * Remove indexed path. We determined that it had negligible impact. * Revert "Remove indexed path." This reverts commit 25ec4eddfa441e802bd957dfaabc83b23c6bae38. * Revert "Revert "Remove indexed path."" This reverts commit 7cd52fecb529dcb9e1a574533bd38531319f1268. --- .../CodeGen/Glsl/OperandManager.cs | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs b/Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs index 4c9d5b550..2de55b2dd 100644 --- a/Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs +++ b/Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs @@ -114,6 +114,16 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl return ubName + "." + GetSwizzleMask(offset & 3); } + private static string GetVec4Indexed(string vectorName, string indexExpr) + { + string result = $"{vectorName}.x"; + for (int i = 1; i < 4; i++) + { + result = $"(({indexExpr}) == {i}) ? ({vectorName}.{GetSwizzleMask(i)}) : ({result})"; + } + return $"({result})"; + } + public static string GetConstantBufferName(IAstNode slot, string offsetExpr, ShaderStage stage) { // Non-constant slots are not supported. @@ -124,9 +134,8 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl string ubName = GetUbName(stage, operand.Value); string index0 = "[" + offsetExpr + " >> 2]"; - string index1 = "[" + offsetExpr + " & 3]"; - return ubName + index0 + index1; + return GetVec4Indexed(ubName + index0, offsetExpr + " & 3"); } public static string GetOutAttributeName(AstOperand attr, ShaderStage stage)