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gloverlay: Apply updated overlay coordinates correctly

Browse source 
When overlay coordinates are updated, after the initial coordinates
are set, the shader indices are applied to the wrong buffer, resulting
in the background image appearing where the overlay should.

Bind the array buffer before applying subsequent coordinate
updates.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5901>
This commit is contained in:
Damian Hobson-Garcia 2023-12-19 12:01:30 -05:00 committed by GStreamer Marge Bot
parent 745197d386
commit fe64e68cc4
1 changed files with 2 additions and 2 deletions
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4
subprojects/gst-plugins-base/ext/gl/gstgloverlay.c
View file

@ -497,6 +497,8 @@ gst_gl_overlay_callback (GstGLFilter * filter, GstGLMemory * in_tex,
gl->BindVertexArray (overlay->overlay_vao);
}
_bind_buffer (overlay, overlay->overlay_vbo);
if (overlay->geometry_change) {
gint render_width, render_height;
gfloat x, y, image_width, image_height;
@ -536,8 +538,6 @@ gst_gl_overlay_callback (GstGLFilter * filter, GstGLMemory * in_tex,
GL_STATIC_DRAW);
}
_bind_buffer (overlay, overlay->overlay_vbo);
gl->BindTexture (GL_TEXTURE_2D, image_tex);
gst_gl_shader_set_uniform_1f (overlay->shader, "alpha", overlay->alpha);