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gltexture: Only use glGetFramebufferParameter() when available

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Fixes #4678
This commit is contained in:
Benjamin Otte 2022-02-08 01:32:44 +01:00
parent 14bdf82e33
commit 2c71825324
1 changed files with 13 additions and 4 deletions
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17
gdk/gdkgltexture.c
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@ -175,10 +175,19 @@ gdk_gl_texture_do_download (gpointer texture_,
glGenFramebuffers (1, &fbo);
glBindFramebuffer (GL_FRAMEBUFFER, fbo);
glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, self->id, 0);
glGetFramebufferParameteriv (GL_FRAMEBUFFER, GL_IMPLEMENTATION_COLOR_READ_FORMAT, &gl_read_format);
glGetFramebufferParameteriv (GL_FRAMEBUFFER, GL_IMPLEMENTATION_COLOR_READ_TYPE, &gl_read_type);
if (!gdk_gl_texture_find_format (gdk_gl_context_get_use_es (self->context), gl_read_format, gl_read_type, &actual_format))
actual_format = GDK_MEMORY_R8G8B8A8_PREMULTIPLIED; /* pray */
if (gdk_gl_context_check_version (self->context, 4, 3, 3, 1))
{
glGetFramebufferParameteriv (GL_FRAMEBUFFER, GL_IMPLEMENTATION_COLOR_READ_FORMAT, &gl_read_format);
glGetFramebufferParameteriv (GL_FRAMEBUFFER, GL_IMPLEMENTATION_COLOR_READ_TYPE, &gl_read_type);
if (!gdk_gl_texture_find_format (gdk_gl_context_get_use_es (self->context), gl_read_format, gl_read_type, &actual_format))
actual_format = GDK_MEMORY_R8G8B8A8_PREMULTIPLIED; /* pray */
}
else
{
gl_read_format = GL_RGBA;
gl_read_type = GL_UNSIGNED_BYTE;
actual_format = GDK_MEMORY_R8G8B8A8_PREMULTIPLIED;
}
if (download->format == actual_format &&
(download->stride == expected_stride))