038a3170bf
In future patches, we'll create additional CoglFramebuffers that will be shared via DMA-Buf with PipeWire. When recording frames, we'll blit the current onscreen framebuffer into the shared one. However, that presents a problem: cogl_framebuffer_blit() mimics glBlitFramebuffer() semantics, and doesn't do an implicit flush of the GPU command stream. As a consequence, clients may receive unblitted or incomplete framebuffers. We could use cogl_framebuffer_finish() to ensure the commands were submitted to the GPU, but it is too harsh -- it blocks the CPU completely until the commands are finished! Add cogl_framebuffer_flush(), which ensures the command stream is submitted to the GPU without blocking the CPU. Even though we don't use the framebuffer specifically, it may be useful in the future for e.g. a potential Vulkan backend to have access to the framebuffer. https://gitlab.gnome.org/GNOME/mutter/merge_requests/1086
106 lines
3.9 KiB
C
106 lines
3.9 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2008,2009,2010,2011 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*
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*
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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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*/
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#ifndef __COGL_FRAMEBUFFER_GL_PRIVATE_H__
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#define __COGL_FRAMEBUFFER_GL_PRIVATE_H__
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gboolean
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_cogl_offscreen_gl_allocate (CoglOffscreen *offscreen,
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GError **error);
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void
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_cogl_offscreen_gl_free (CoglOffscreen *offscreen);
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void
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_cogl_framebuffer_gl_flush_state (CoglFramebuffer *draw_buffer,
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CoglFramebuffer *read_buffer,
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CoglFramebufferState state);
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void
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_cogl_framebuffer_gl_clear (CoglFramebuffer *framebuffer,
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unsigned long buffers,
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float red,
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float green,
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float blue,
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float alpha);
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void
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_cogl_framebuffer_gl_query_bits (CoglFramebuffer *framebuffer,
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CoglFramebufferBits *bits);
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void
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_cogl_framebuffer_gl_finish (CoglFramebuffer *framebuffer);
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void
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_cogl_framebuffer_gl_flush (CoglFramebuffer *framebuffer);
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void
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_cogl_framebuffer_gl_discard_buffers (CoglFramebuffer *framebuffer,
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unsigned long buffers);
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void
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_cogl_framebuffer_gl_bind (CoglFramebuffer *framebuffer, GLenum target);
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void
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_cogl_framebuffer_gl_draw_attributes (CoglFramebuffer *framebuffer,
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CoglPipeline *pipeline,
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CoglVerticesMode mode,
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int first_vertex,
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int n_vertices,
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CoglAttribute **attributes,
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int n_attributes,
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CoglDrawFlags flags);
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void
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_cogl_framebuffer_gl_draw_indexed_attributes (CoglFramebuffer *framebuffer,
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CoglPipeline *pipeline,
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CoglVerticesMode mode,
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int first_vertex,
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int n_vertices,
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CoglIndices *indices,
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CoglAttribute **attributes,
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int n_attributes,
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CoglDrawFlags flags);
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gboolean
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_cogl_framebuffer_gl_read_pixels_into_bitmap (CoglFramebuffer *framebuffer,
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int x,
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int y,
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CoglReadPixelsFlags source,
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CoglBitmap *bitmap,
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GError **error);
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#endif /* __COGL_FRAMEBUFFER_GL_PRIVATE_H__ */
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