OpenCascade/occt
1
0
Fork 0
mirror of https://git.dev.opencascade.org/repos/occt.git synced 2025-08-19 13:40:49 +03:00
Code Activity

0026081: Visualization, TKOpenGl - rebuild vertex attributes in order to not render large index arrays in OpenGL ES

Browse Source
This commit is contained in:
dbp
2015-04-16 16:03:55 +03:00
committed by bugmaster
parent 6ca1fa7070
commit e99a2f7cae
4 changed files with 63 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/OpenGl/OpenGl_Context.cxx
View File

@@ -83,9 +83,11 @@ OpenGl_Context::OpenGl_Context (const Handle(OpenGl_Caps)& theCaps)
caps (!theCaps.IsNull() ? theCaps : new OpenGl_Caps()),
#if defined(GL_ES_VERSION_2_0)
hasHighp (Standard_False),
hasUintIndex(Standard_False),
hasTexRGBA8(Standard_False),
#else
hasHighp (Standard_True),
hasUintIndex(Standard_True),
hasTexRGBA8(Standard_True),
#endif
arbNPTW (Standard_False),
@@ -1057,7 +1059,9 @@ void OpenGl_Context::init (const Standard_Boolean theIsCoreProfile)
arbFBOBlit = (OpenGl_ArbFBOBlit* )(&(*myFuncs));
}
hasHighp = CheckExtension ("GL_OES_fragment_precision_high");
hasUintIndex = IsGlGreaterEqual (3, 0)
|| CheckExtension ("GL_OES_element_index_uint");
hasHighp = CheckExtension ("GL_OES_fragment_precision_high");
GLint aRange[2] = {0, 0};
GLint aPrec = 0;
::glGetShaderPrecisionFormat (GL_FRAGMENT_SHADER, GL_HIGH_FLOAT, aRange, &aPrec);