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cogl-framebuffer: Use the FBO extension for color sizes

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OpenGL 3.0 deprecated querying of the GL_{RED,GREEN,BLUE}_BITS
constants, and the FBO extension provides a mechanism to query for the
color buffer sizes which *should* work even with the default
framebuffer. Unfortunately, this doesn't seem to hold for Mesa - so we
just use this for the offscreen CoglFramebuffer type, and we fall back
to glGetIntegerv() for the onscreen one.

http://bugzilla.openedhand.com/show_bug.cgi?id=2094
This commit is contained in:
Emmanuele Bassi
2010-05-26 17:14:53 +01:00
committed by Robert Bragg
parent 3c4451cd84
commit 7a7dedebd5
4 changed files with 87 additions and 5 deletions
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4
cogl/cogl-debug.c
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@ -50,7 +50,8 @@ static const GDebugKey cogl_log_debug_keys[] = {
{ "draw", COGL_DEBUG_DRAW },
{ "opengl", COGL_DEBUG_OPENGL },
{ "pango", COGL_DEBUG_PANGO },
{ "show-source", COGL_DEBUG_SHOW_SOURCE}
{ "show-source", COGL_DEBUG_SHOW_SOURCE},
{ "offscreen", COGL_DEBUG_OFFSCREEN }
};
static const int n_cogl_log_debug_keys =
G_N_ELEMENTS (cogl_log_debug_keys);
@ -124,6 +125,7 @@ _cogl_parse_debug_string (const char *value,
OPT ("disable-glsl:", "disable use of GLSL");
OPT ("show-source:", "show generated ARBfp/GLSL");
OPT ("opengl:", "traces some select OpenGL calls");
OPT ("offscreen:", "debug offscreen support");
g_printerr ("\n%28s\n", "Special debug values:");
OPT ("all:", "Enables all non-behavioural debug options");
OPT ("verbose:", "Enables all non-behavioural debug options");