Remove gamma code

The gamma value is always 2.2, which means the table entries all point
to themselves. Remove the usage of the gamma table.

Change-Id: Idbb06015e8acd9f106f4bd1da5ef06563fb26296
Reviewed-on: https://pdfium-review.googlesource.com/5352
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 0 insertions, 13 deletions

diff --git a/core/fxge/ge/cfx_gemodule.cpp b/core/fxge/ge/cfx_gemodule.cpp
index 2cd1e31144..d7ae098f31 100644
--- a/core/fxge/ge/cfx_gemodule.cpp
+++ b/core/fxge/ge/cfx_gemodule.cpp
@@ -47,7 +47,6 @@ void CFX_GEModule::Init(const char** userFontPaths) {
   ASSERT(g_pGEModule);
   m_pUserFontPaths = userFontPaths;
   InitPlatform();
-  SetTextGamma(2.2f);
 }
 
 CFX_FontCache* CFX_GEModule::GetFontCache() {
@@ -55,15 +54,3 @@ CFX_FontCache* CFX_GEModule::GetFontCache() {
     m_pFontCache = pdfium::MakeUnique<CFX_FontCache>();
   return m_pFontCache.get();
 }
-
-void CFX_GEModule::SetTextGamma(float gammaValue) {
-  gammaValue /= 2.2f;
-  for (int i = 0; i < 256; ++i) {
-    m_GammaValue[i] = static_cast<uint8_t>(
-        FXSYS_pow(static_cast<float>(i) / 255, gammaValue) * 255.0f + 0.5f);
-  }
-}
-
-const uint8_t* CFX_GEModule::GetTextGammaTable() const {
-  return m_GammaValue;
-}