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setRenderStates3DMode in ES1 and ES2 now use setBlendFunc with (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) instead of (GL_ONE, GL_ONE_MINUS_SRC_COLOR). 

This prevents color blending with background when we only want alpha blending (when EBO_ADD is set in materials).
It's something that was changed a few years ago in the OpenGL driver, but never made it into the ES drivers.
Note that transparency in ES1 _is_ currently broken - but it was broken before this patch already (so another bug to hunt).


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@5473 dfc29bdd-3216-0410-991c-e03cc46cb475
master
cutealien 2017-06-07 10:21:30 +00:00
parent e1c93e64fb
commit c3ed02c8d0
2 changed files with 2 additions and 2 deletions
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2
source/Irrlicht/COGLES2Driver.cpp
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@ -1684,7 +1684,7 @@ COGLES2Driver::~COGLES2Driver()
{
// Reset Texture Stages
CacheHandler->setBlend(false);
CacheHandler->setBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_COLOR);
CacheHandler->setBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
ResetRenderStates = true;
}

2
source/Irrlicht/COGLESDriver.cpp
View File

@ -1474,7 +1474,7 @@ void COGLES1Driver::setRenderStates3DMode()
// Reset Texture Stages
CacheHandler->setBlend(false);
glDisable(GL_ALPHA_TEST);
CacheHandler->setBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_COLOR);
CacheHandler->setBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// switch back the matrices
glMatrixMode(GL_MODELVIEW);