Fix OpenGL ES 3 shaders for QDebugOverlay

Change-Id: I72185e825d20aad7c05e4870074831efa199972d
Pick-to: 5.15
Reviewed-by: Mike Krus <mike.krus@kdab.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/src/plugins/renderers/opengl/debug/imguirenderer.cpp b/src/plugins/renderers/opengl/debug/imguirenderer.cpp
index 3d4e9e614..de8cf0a09 100644
--- a/src/plugins/renderers/opengl/debug/imguirenderer.cpp
+++ b/src/plugins/renderers/opengl/debug/imguirenderer.cpp
@@ -530,7 +530,7 @@ bool ImGuiRenderer::createDeviceObjects()
         "}\n";
 
     const GLchar *vertex_shader_es3 =
-        "#version 110\n"
+        "#version 300 es\n"
         "uniform mat4 ProjMtx;\n"
         "in vec2 Position;\n"
         "in vec2 UV;\n"
@@ -545,13 +545,15 @@ bool ImGuiRenderer::createDeviceObjects()
         "}\n";
 
     const GLchar* fragment_shader_es3 =
-        "#version 110\n"
+        "#version 300 es\n"
+        "precision highp float;\n"
         "uniform sampler2D Texture;\n"
         "in vec2 Frag_UV;\n"
         "in vec4 Frag_Color;\n"
+        "out vec4 Out_Color;\n"
         "void main()\n"
         "{\n"
-        "  gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV.st);\n"
+        "  Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n"
         "}\n";
 
     QString logs;