Add OpenGL core profile support to QtMultimediaQuickTools

When requesting a OGL Core profile via QSurfaceFormat::setDefaultFormat (e.g. to use Qt3D advanced features),
it is no longer possible to render QML Video items. This is because the requested shaders should be _core versions.
This patch adds the core shaders so QtMultimedia stops whining, and bind textures with the proper
format, since GL_LUMINANCE and GL_LUMINANCE_ALPHA are no longer valid in OGL 4.

Task-number: QTBUG-51064
Change-Id: I909e01e7dc7be07549e9ecf0a6425b309af38ea1
Reviewed-by: VaL Doroshchuk <valentyn.doroshchuk@qt.io>
Reviewed-by: Christian Stromme <christian.stromme@qt.io>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/qtmultimediaquicktools/shaders/uyvyvideo_core.frag b/src/qtmultimediaquicktools/shaders/uyvyvideo_core.frag
new file mode 100644
index 000000000..75c7de5a6
--- /dev/null
+++ b/src/qtmultimediaquicktools/shaders/uyvyvideo_core.frag
@@ -0,0 +1,13 @@
+#version 150 core
+uniform sampler2D yTexture; // Y component passed as GL_LUMINANCE_ALPHA, in uyvy Y = a
+uniform sampler2D uvTexture; // UV component passed as RGBA macropixel, in uyvy U = r, V = b
+uniform mat4 colorMatrix;
+uniform float opacity;
+in vec2 qt_TexCoord;
+out vec4 fragColor;
+
+void main()
+{
+    vec3 YUV = vec3(texture(yTexture, qt_TexCoord).a, texture2D(uvTexture, qt_TexCoord).rb);
+    fragColor = colorMatrix * vec4(YUV, 1.0) * opacity;
+}