Revert "Revert "converted vertex shaders to device coords""

This reverts commit 29b3434e48ca41672266ac40f5b9e8f8a0405cb5.

Reason for revert: The Chrome perf regression is suspect & the Nexus 5 is broken w/o this CL.

Original change's description:
> Revert "converted vertex shaders to device coords"
> 
> This reverts commit e7e81c15c144b8133f696d0744ed9f7e8d06e936.
> 
> Reason for revert: Chrome perf regressions
> 
> Bug: skia:
> Change-Id: I17fadc97c4b8e80bfdccbf123554614a00c58473
> Reviewed-on: https://skia-review.googlesource.com/99040
> Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

TBR=csmartdalton@google.com,ethannicholas@google.com

Change-Id: Iff3c9fce65beeca16028ae59d4d08b1413b90530
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/99241
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/src/gpu/gl/GrGLUniformHandler.cpp b/src/gpu/gl/GrGLUniformHandler.cpp
index b3b4b9f6b5..39392f996b 100644
--- a/src/gpu/gl/GrGLUniformHandler.cpp
+++ b/src/gpu/gl/GrGLUniformHandler.cpp
@@ -10,10 +10,19 @@
 #include "gl/GrGLCaps.h"
 #include "gl/GrGLGpu.h"
 #include "gl/builders/GrGLProgramBuilder.h"
+#include "SkSLCompiler.h"
 
 #define GL_CALL(X) GR_GL_CALL(this->glGpu()->glInterface(), X)
 #define GL_CALL_RET(R, X) GR_GL_CALL_RET(this->glGpu()->glInterface(), R, X)
 
+bool valid_name(const char* name) {
+    // disallow unknown names that start with "sk_"
+    if (!strncmp(name, GR_NO_MANGLE_PREFIX, strlen(GR_NO_MANGLE_PREFIX))) {
+        return !strcmp(name, SkSL::Compiler::RTADJUST_NAME);
+    }
+    return true;
+}
+
 GrGLSLUniformHandler::UniformHandle GrGLUniformHandler::internalAddUniformArray(
                                                                             uint32_t visibility,
                                                                             GrSLType type,
@@ -23,6 +32,7 @@ GrGLSLUniformHandler::UniformHandle GrGLUniformHandler::internalAddUniformArray(
                                                                             int arrayCount,
                                                                             const char** outName) {
     SkASSERT(name && strlen(name));
+    SkASSERT(valid_name(name));
     SkASSERT(0 != visibility);
     SkASSERT(kDefault_GrSLPrecision == precision || GrSLTypeTemporarilyAcceptsPrecision(type));
 
@@ -36,7 +46,7 @@ GrGLSLUniformHandler::UniformHandle GrGLUniformHandler::internalAddUniformArray(
     // uniform view matrix, they should upload the view matrix in their setData along with regular
     // uniforms.
     char prefix = 'u';
-    if ('u' == name[0]) {
+    if ('u' == name[0] || !strncmp(name, GR_NO_MANGLE_PREFIX, strlen(GR_NO_MANGLE_PREFIX))) {
         prefix = '\0';
     }
     fProgramBuilder->nameVariable(uni.fVariable.accessName(), prefix, name, mangleName);