commit 5bff4059d646fbd296818d8d17fb38c8590de8a7
author Nicolas Capens <capn@google.com> Mon May 28 13:18:59 2018 -0400
committer Nicolas Capens <nicolascapens@google.com> Tue May 29 13:59:43 2018 +0000
tree 5fbd593d691def91eb553a8d1fb81dd880c8dc69
parent ac3f2faccda5a53f3003ff66b600ed4e4cec1800

Implement gather/scatter operations for shader register files.

This allows to address the registers with a vector of indices.

Also rename 'dynamic' register files to 'indirect addressable', to
disambiguate from 'dynamic indexing' at the shader level. Indexing with
a uniform does not require gather/scatter operations, but does require
indirect addressing.

Bug chromium:845103
Bug skia:7846

Change-Id: I3c42be33def66328688f2900c61c80246bf1e584
Reviewed-on: https://swiftshader-review.googlesource.com/18989
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

src/Shader/PixelRoutine.cpp

diff --git a/src/Shader/PixelRoutine.cpp b/src/Shader/PixelRoutine.cpp
index 1c300b0..146e42d 100644
--- a/src/Shader/PixelRoutine.cpp
+++ b/src/Shader/PixelRoutine.cpp
@@ -29,7 +29,8 @@
 	extern bool exactColorRounding;
 	extern bool forceClearRegisters;
 
-	PixelRoutine::PixelRoutine(const PixelProcessor::State &state, const PixelShader *shader) : QuadRasterizer(state, shader), v(shader && shader->dynamicallyIndexedInput)
+	PixelRoutine::PixelRoutine(const PixelProcessor::State &state, const PixelShader *shader)
+		: QuadRasterizer(state, shader), v(shader && shader->indirectAddressableInput)
 	{
 		if(!shader || shader->getShaderModel() < 0x0200 || forceClearRegisters)
 		{