Merge remote-tracking branch 'origin/5.13' into dev

Change-Id: Ic6cfe08dbda1dc92b969e67063f805df63ba0fcf

3 files changed, 42 insertions, 3 deletions

diff --git a/src/gui/opengl/qopenglprogrambinarycache.cpp b/src/gui/opengl/qopenglprogrambinarycache.cpp
index 74b91086ee..1f1ac1fd80 100644
--- a/src/gui/opengl/qopenglprogrambinarycache.cpp
+++ b/src/gui/opengl/qopenglprogrambinarycache.cpp
@@ -168,12 +168,19 @@ bool QOpenGLProgramBinaryCache::verifyHeader(const QByteArray &buf) const
 
 bool QOpenGLProgramBinaryCache::setProgramBinary(uint programId, uint blobFormat, const void *p, uint blobSize)
 {
-    QOpenGLExtraFunctions *funcs = QOpenGLContext::currentContext()->extraFunctions();
+    QOpenGLContext *context = QOpenGLContext::currentContext();
+    QOpenGLExtraFunctions *funcs = context->extraFunctions();
     while (true) {
         GLenum error = funcs->glGetError();
         if (error == GL_NO_ERROR || error == GL_CONTEXT_LOST)
             break;
     }
+#if defined(QT_OPENGL_ES_2)
+    if (context->isOpenGLES() && context->format().majorVersion() < 3) {
+        initializeProgramBinaryOES(context);
+        programBinaryOES(programId, blobFormat, p, blobSize);
+    } else
+#endif
     funcs->glProgramBinary(programId, blobFormat, p, blobSize);
 
     GLenum err = funcs->glGetError();
@@ -347,7 +354,8 @@ void QOpenGLProgramBinaryCache::save(const QByteArray &cacheKey, uint programId)
 
     GLEnvInfo info;
 
-    QOpenGLExtraFunctions *funcs = QOpenGLContext::currentContext()->extraFunctions();
+    QOpenGLContext *context = QOpenGLContext::currentContext();
+    QOpenGLExtraFunctions *funcs = context->extraFunctions();
     GLint blobSize = 0;
     while (true) {
         GLenum error = funcs->glGetError();
@@ -390,6 +398,12 @@ void QOpenGLProgramBinaryCache::save(const QByteArray &cacheKey, uint programId)
         *p++ = 0;
 
     GLint outSize = 0;
+#if defined(QT_OPENGL_ES_2)
+    if (context->isOpenGLES() && context->format().majorVersion() < 3) {
+        initializeProgramBinaryOES(context);
+        getProgramBinaryOES(programId, blobSize, &outSize, &blobFormat, p);
+    } else
+#endif
     funcs->glGetProgramBinary(programId, blobSize, &outSize, &blobFormat, p);
     if (blobSize != outSize) {
         qCDebug(DBG_SHADER_CACHE, "glGetProgramBinary returned size %d instead of %d", outSize, blobSize);
@@ -414,4 +428,17 @@ void QOpenGLProgramBinaryCache::save(const QByteArray &cacheKey, uint programId)
     }
 }
 
+#if defined(QT_OPENGL_ES_2)
+void QOpenGLProgramBinaryCache::initializeProgramBinaryOES(QOpenGLContext *context)
+{
+    if (m_programBinaryOESInitialized)
+        return;
+    m_programBinaryOESInitialized = true;
+
+    Q_ASSERT(context);
+    getProgramBinaryOES = (void (QOPENGLF_APIENTRYP)(GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, GLvoid *binary))context->getProcAddress("glGetProgramBinaryOES");
+    programBinaryOES = (void (QOPENGLF_APIENTRYP)(GLuint program, GLenum binaryFormat, const GLvoid *binary, GLint length))context->getProcAddress("glProgramBinaryOES");
+}
+#endif
+
 QT_END_NAMESPACE
diff --git a/src/gui/opengl/qopenglprogrambinarycache_p.h b/src/gui/opengl/qopenglprogrambinarycache_p.h
index a0e1f91e25..9fade08e66 100644
--- a/src/gui/opengl/qopenglprogrambinarycache_p.h
+++ b/src/gui/opengl/qopenglprogrambinarycache_p.h
@@ -93,6 +93,12 @@ private:
         uint format;
     };
     QCache<QByteArray, MemCacheEntry> m_memCache;
+#if defined(QT_OPENGL_ES_2)
+    void (QOPENGLF_APIENTRYP programBinaryOES)(GLuint program, GLenum binaryFormat, const GLvoid *binary, GLsizei length);
+    void (QOPENGLF_APIENTRYP getProgramBinaryOES)(GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, GLvoid *binary);
+    void initializeProgramBinaryOES(QOpenGLContext *context);
+    bool m_programBinaryOESInitialized = false;
+#endif
 };
 
 QT_END_NAMESPACE
diff --git a/src/gui/opengl/qopenglshaderprogram.cpp b/src/gui/opengl/qopenglshaderprogram.cpp
index f225d5dc75..3c7bd4f90d 100644
--- a/src/gui/opengl/qopenglshaderprogram.cpp
+++ b/src/gui/opengl/qopenglshaderprogram.cpp
@@ -3755,8 +3755,14 @@ QOpenGLProgramBinarySupportCheck::QOpenGLProgramBinarySupportCheck(QOpenGLContex
     if (ctx) {
         if (ctx->isOpenGLES()) {
             qCDebug(DBG_SHADER_CACHE, "OpenGL ES v%d context", ctx->format().majorVersion());
-            if (ctx->format().majorVersion() >= 3)
+            if (ctx->format().majorVersion() >= 3) {
                 m_supported = true;
+            } else {
+                const bool hasExt = ctx->hasExtension("GL_OES_get_program_binary");
+                qCDebug(DBG_SHADER_CACHE, "GL_OES_get_program_binary support = %d", hasExt);
+                if (hasExt)
+                    m_supported = true;
+            }
         } else {
             const bool hasExt = ctx->hasExtension("GL_ARB_get_program_binary");
             qCDebug(DBG_SHADER_CACHE, "GL_ARB_get_program_binary support = %d", hasExt);