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Query GL version before using it

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Bug: 32984164
Test: manual testing of linear blending
Change-Id: Ie20bdc34d1b98e93eae22b15f3e2a7994d3b4ff7
This commit is contained in:
Romain Guy
2016-12-01 09:50:49 -08:00
parent 986af188b6
commit b136c8556e
1 changed files with 20 additions and 20 deletions
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40
libs/hwui/Extensions.cpp
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@@ -37,6 +37,26 @@ namespace uirenderer {
Extensions::Extensions() {
const char* version = (const char*) glGetString(GL_VERSION);
// Section 6.1.5 of the OpenGL ES specification indicates the GL version
// string strictly follows this format:
//
// OpenGL<space>ES<space><version number><space><vendor-specific information>
//
// In addition section 6.1.5 describes the version number thusly:
//
// "The version number is either of the form major number.minor number or
// major number.minor number.release number, where the numbers all have one
// or more digits. The release number and vendor specific information are
// optional."
if (sscanf(version, "OpenGL ES %d.%d", &mVersionMajor, &mVersionMinor) != 2) {
// If we cannot parse the version number, assume OpenGL ES 2.0
mVersionMajor = 2;
mVersionMinor = 0;
}
auto extensions = StringUtils::split((const char*) glGetString(GL_EXTENSIONS));
mHasNPot = extensions.has("GL_OES_texture_npot");
mHasFramebufferFetch = extensions.has("GL_NV_shader_framebuffer_fetch");
@@ -58,26 +78,6 @@ Extensions::Extensions() {
mHasSRGB = false;
mHasSRGBWriteControl = false;
#endif
const char* version = (const char*) glGetString(GL_VERSION);
// Section 6.1.5 of the OpenGL ES specification indicates the GL version
// string strictly follows this format:
//
// OpenGL<space>ES<space><version number><space><vendor-specific information>
//
// In addition section 6.1.5 describes the version number thusly:
//
// "The version number is either of the form major number.minor number or
// major number.minor number.release number, where the numbers all have one
// or more digits. The release number and vendor specific information are
// optional."
if (sscanf(version, "OpenGL ES %d.%d", &mVersionMajor, &mVersionMinor) != 2) {
// If we cannot parse the version number, assume OpenGL ES 2.0
mVersionMajor = 2;
mVersionMinor = 0;
}
}
}; // namespace uirenderer