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-rw-r--r--src/opengl/qgl.cpp3
-rw-r--r--src/opengl/qgl_p.h3
-rw-r--r--src/opengl/qgl_win.cpp2
-rw-r--r--src/opengl/qglshaderprogram.cpp10
4 files changed, 14 insertions, 4 deletions
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index 532c724..f6ea6be 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -5246,6 +5246,8 @@ QGLExtensions::Extensions QGLExtensions::currentContextExtensions()
glExtensions |= FragmentProgram;
if (extensions.match("GL_ARB_fragment_shader"))
glExtensions |= FragmentShader;
+ if (extensions.match("GL_ARB_ES2_compatibility"))
+ glExtensions |= ES2Compatibility;
if (extensions.match("GL_ARB_texture_mirrored_repeat"))
glExtensions |= MirroredRepeat;
if (extensions.match("GL_EXT_framebuffer_object"))
@@ -5266,6 +5268,7 @@ QGLExtensions::Extensions QGLExtensions::currentContextExtensions()
glExtensions |= FramebufferObject;
glExtensions |= GenerateMipmap;
glExtensions |= FragmentShader;
+ glExtensions |= ES2Compatibility;
#endif
#if defined(QT_OPENGL_ES_1)
if (extensions.match("GL_OES_framebuffer_object"))
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h
index f86a848..78f888a 100644
--- a/src/opengl/qgl_p.h
+++ b/src/opengl/qgl_p.h
@@ -282,7 +282,8 @@ public:
DDSTextureCompression = 0x00008000,
ETC1TextureCompression = 0x00010000,
PVRTCTextureCompression = 0x00020000,
- FragmentShader = 0x00040000
+ FragmentShader = 0x00040000,
+ ES2Compatibility = 0x00080000
};
Q_DECLARE_FLAGS(Extensions, Extension)
diff --git a/src/opengl/qgl_win.cpp b/src/opengl/qgl_win.cpp
index 3f13ac4..5f7d4e2 100644
--- a/src/opengl/qgl_win.cpp
+++ b/src/opengl/qgl_win.cpp
@@ -1042,7 +1042,7 @@ int QGLContext::choosePixelFormat(void* dummyPfd, HDC pdc)
iAttributes[i++] = WGL_DRAW_TO_WINDOW_ARB;
iAttributes[i++] = TRUE;
iAttributes[i++] = WGL_COLOR_BITS_ARB;
- iAttributes[i++] = 32;
+ iAttributes[i++] = 24;
iAttributes[i++] = WGL_DOUBLE_BUFFER_ARB;
iAttributes[i++] = d->glFormat.doubleBuffer();
if (d->glFormat.stereo()) {
diff --git a/src/opengl/qglshaderprogram.cpp b/src/opengl/qglshaderprogram.cpp
index 74382b0..bc1c009 100644
--- a/src/opengl/qglshaderprogram.cpp
+++ b/src/opengl/qglshaderprogram.cpp
@@ -97,6 +97,10 @@ QT_BEGIN_NAMESPACE
to just features that are present in GLSL/ES, and avoid
standard variable names that only work on the desktop.
+ If the \c{GL_ARB_ES2_compatibility} extension is present,
+ then the above prefix is not added because the desktop OpenGL
+ implementation supports precision qualifiers.
+
\section1 Simple shader example
\snippet doc/src/snippets/code/src_opengl_qglshaderprogram.cpp 1
@@ -394,8 +398,10 @@ bool QGLShader::compileSourceCode(const char *source)
srclen.append(GLint(headerLen));
}
#ifdef QGL_DEFINE_QUALIFIERS
- src.append(qualifierDefines);
- srclen.append(GLint(sizeof(qualifierDefines) - 1));
+ if (!(QGLExtensions::glExtensions() & QGLExtensions::ES2Compatibility)) {
+ src.append(qualifierDefines);
+ srclen.append(GLint(sizeof(qualifierDefines) - 1));
+ }
#endif
#ifdef QGL_REDEFINE_HIGHP
if (d->shaderType == Fragment) {