From f354cd5c69b0b1fe7db87473240a51ecc7369c03 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alejandro=20Pi=C3=B1eiro?= Date: Wed, 11 Jan 2017 18:11:55 -0200 Subject: [PATCH] main/buffers: take into account FRONT_AND_BACK on ReadBuffer From OpenGL 3.1 spec, section 4.3.1 "Reading Pixels", page 190 (203 PDF) "When READ FRAMEBUFFER BINDING is zero, i.e. the default framebuffer, src must be one of the values listed in table 4.4, including NONE . FRONT_AND_BACK , FRONT , and LEFT refer to the front left buffer." There is an equivalent text on OpenGL 4.5 spec, section 18.2.1 "Selecting Buffers for Reading", page 502 (524 PDF), so the behaviour is still the same. Part of the fix for: GL45-CTS.direct_state_access.framebuffers_draw_read_buffers_errors Reviewed-by: Anuj Phogat --- src/mesa/main/buffers.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c index bba5e7e701c..7d17ae92de2 100644 --- a/src/mesa/main/buffers.c +++ b/src/mesa/main/buffers.c @@ -204,6 +204,8 @@ read_buffer_enum_to_index(const struct gl_context *ctx, GLenum buffer) return BUFFER_FRONT_LEFT; case GL_AUX0: return BUFFER_AUX0; + case GL_FRONT_AND_BACK: + return BUFFER_FRONT_LEFT; case GL_AUX1: case GL_AUX2: case GL_AUX3: