From 74987977a36a7111281e8fb53568dc05dbd3a8b4 Mon Sep 17 00:00:00 2001 From: Kevin Rogovin Date: Wed, 17 Jun 2015 13:29:53 +0300 Subject: [PATCH] mesa: add helper functions for geometry of gl_framebuffer Add convenience helper functions for fetching geometry of gl_framebuffer that return the geometry of the gl_framebuffer instead of the geometry of the buffers of the gl_framebuffer when then the gl_framebuffer has no attachments. Reviewed-by: Ian Romanick Signed-off-by: Kevin Rogovin --- src/mesa/main/framebuffer.h | 28 ++++++++++++++++++++++++++++ src/mesa/main/mtypes.h | 8 +++++++- 2 files changed, 35 insertions(+), 1 deletion(-) diff --git a/src/mesa/main/framebuffer.h b/src/mesa/main/framebuffer.h index d02b86f..ca286e9 100644 --- a/src/mesa/main/framebuffer.h +++ b/src/mesa/main/framebuffer.h @@ -76,6 +76,34 @@ _mesa_scissor_bounding_box(const struct gl_context *ctx, const struct gl_framebuffer *buffer, unsigned idx, int *bbox); +static inline GLuint +_mesa_geometric_width(const struct gl_framebuffer *buffer) +{ + return buffer->_HasAttachments ? + buffer->Width : buffer->DefaultGeometry.Width; +} + +static inline GLuint +_mesa_geometric_height(const struct gl_framebuffer *buffer) +{ + return buffer->_HasAttachments ? + buffer->Height : buffer->DefaultGeometry.Height; +} + +static inline GLuint +_mesa_geometric_samples(const struct gl_framebuffer *buffer) +{ + return buffer->_HasAttachments ? + buffer->Visual.samples : buffer->DefaultGeometry.NumSamples; +} + +static inline GLuint +_mesa_geometric_layers(const struct gl_framebuffer *buffer) +{ + return buffer->_HasAttachments ? + buffer->MaxNumLayers : buffer->DefaultGeometry.Layers; +} + extern void _mesa_update_draw_buffer_bounds(struct gl_context *ctx, struct gl_framebuffer *drawFb); diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index e9f70e2..a10e494 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -3174,7 +3174,13 @@ struct gl_framebuffer * GL_ARB_framebuffer_no_attachments must check for the flag _HasAttachments * and if GL_FALSE, must then use the values in DefaultGeometry to initialize * its viewport, scissor and so on (in particular _Xmin, _Xmax, _Ymin and - * _Ymax do NOT take into account _HasAttachments being false) + * _Ymax do NOT take into account _HasAttachments being false). To get the + * geometry of the framebuffer, the helper functions + * _mesa_geometric_width(), + * _mesa_geometric_height(), + * _mesa_geometric_samples() and + * _mesa_geometric_layers() + * are available that check _HasAttachments. */ bool _HasAttachments; -- 2.7.4