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mesa: add missing RGB9_E5 format in _mesa_base_fbo_format 

RGB9_E5 should be accepted by RenderbufferStorage if the
EXT_texture_shared_exponent is exposed. It is left to the
implementations to return GL_FRAMEBUFFER_UNSUPPORTED_EXT
when checking the framebuffer completeness if they do not
support rendering in this format.

Discussed in:
https://github.com/KhronosGroup/OpenGL-API/issues/32

This fixes KHR-GL45.internalformat.renderbuffer.rgb9_e5

v2: Added more info to the commit message (Antia)

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Antia Puentes <apuentes@igalia.com>
This commit is contained in:
Juan A. Suarez Romero 2018-01-15 10:58:50 +00:00 committed by Antia Puentes
parent e72062b66d
commit e1623b303c
1 changed files with 3 additions and 0 deletions
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3
src/mesa/main/fbobject.c
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@ -1976,6 +1976,9 @@ _mesa_base_fbo_format(const struct gl_context *ctx, GLenum internalFormat)
ctx->Extensions.ARB_texture_float) ||
_mesa_is_gles3(ctx) /* EXT_color_buffer_float */ )
? GL_RGBA : 0;
case GL_RGB9_E5:
return (_mesa_is_desktop_gl(ctx) && ctx->Extensions.EXT_texture_shared_exponent)
? GL_RGB: 0;
case GL_ALPHA16F_ARB:
case GL_ALPHA32F_ARB:
return ctx->API == API_OPENGL_COMPAT &&