mirror of
https://github.com/brl/mutter.git
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6b29371db3
The commit also moves certain functions from the private header as they are not used anywhere else and removes COGL_EXPORT when the function is supposed to be private and is not used outside of cogl Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3437>
284 lines
9.9 KiB
C
284 lines
9.9 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) 2007,2008,2009 Intel Corporation.
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* Copyright (C) 2019 DisplayLink (UK) Ltd.
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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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#pragma once
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#include "cogl/cogl-framebuffer-driver.h"
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#include "cogl/cogl-matrix-stack-private.h"
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#include "cogl/cogl-journal-private.h"
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#include "cogl/winsys/cogl-winsys-private.h"
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#include "cogl/cogl-attribute-private.h"
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#include "cogl/cogl-clip-stack.h"
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typedef enum
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{
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COGL_FRAMEBUFFER_DRIVER_TYPE_FBO,
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COGL_FRAMEBUFFER_DRIVER_TYPE_BACK,
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} CoglFramebufferDriverType;
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struct _CoglFramebufferDriverConfig
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{
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CoglFramebufferDriverType type;
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gboolean disable_depth_and_stencil;
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};
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typedef struct
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{
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CoglSwapChain *swap_chain;
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gboolean need_stencil;
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int samples_per_pixel;
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gboolean stereo_enabled;
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} CoglFramebufferConfig;
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/* XXX: The order of these indices determines the order they are
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* flushed.
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*
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* Flushing clip state may trash the modelview and projection matrices
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* so we must do it before flushing the matrices.
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*/
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typedef enum _CoglFramebufferStateIndex
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{
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COGL_FRAMEBUFFER_STATE_INDEX_BIND = 0,
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COGL_FRAMEBUFFER_STATE_INDEX_VIEWPORT = 1,
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COGL_FRAMEBUFFER_STATE_INDEX_CLIP = 2,
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COGL_FRAMEBUFFER_STATE_INDEX_DITHER = 3,
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COGL_FRAMEBUFFER_STATE_INDEX_MODELVIEW = 4,
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COGL_FRAMEBUFFER_STATE_INDEX_PROJECTION = 5,
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COGL_FRAMEBUFFER_STATE_INDEX_FRONT_FACE_WINDING = 6,
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COGL_FRAMEBUFFER_STATE_INDEX_DEPTH_WRITE = 7,
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COGL_FRAMEBUFFER_STATE_INDEX_STEREO_MODE = 8,
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COGL_FRAMEBUFFER_STATE_INDEX_MAX = 9
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} CoglFramebufferStateIndex;
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typedef enum _CoglFramebufferState
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{
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COGL_FRAMEBUFFER_STATE_BIND = 1<<0,
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COGL_FRAMEBUFFER_STATE_VIEWPORT = 1<<1,
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COGL_FRAMEBUFFER_STATE_CLIP = 1<<2,
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COGL_FRAMEBUFFER_STATE_DITHER = 1<<3,
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COGL_FRAMEBUFFER_STATE_MODELVIEW = 1<<4,
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COGL_FRAMEBUFFER_STATE_PROJECTION = 1<<5,
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COGL_FRAMEBUFFER_STATE_FRONT_FACE_WINDING = 1<<6,
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COGL_FRAMEBUFFER_STATE_DEPTH_WRITE = 1<<7,
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COGL_FRAMEBUFFER_STATE_STEREO_MODE = 1<<8
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} CoglFramebufferState;
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#define COGL_FRAMEBUFFER_STATE_ALL ((1<<COGL_FRAMEBUFFER_STATE_INDEX_MAX) - 1)
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/* Private flags that can internally be added to CoglReadPixelsFlags */
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typedef enum
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{
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/* If this is set then the data will not be flipped to compensate
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for GL's upside-down coordinate system but instead will be left
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in whatever order GL gives us (which will depend on whether the
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framebuffer is offscreen or not) */
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COGL_READ_PIXELS_NO_FLIP = 1L << 30
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} CoglPrivateReadPixelsFlags;
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typedef struct _CoglFramebufferBits
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{
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int red;
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int blue;
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int green;
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int alpha;
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int depth;
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int stencil;
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} CoglFramebufferBits;
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gboolean
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cogl_framebuffer_is_allocated (CoglFramebuffer *framebuffer);
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void
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cogl_framebuffer_init_config (CoglFramebuffer *framebuffer,
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const CoglFramebufferConfig *config);
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const CoglFramebufferConfig *
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cogl_framebuffer_get_config (CoglFramebuffer *framebuffer);
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void
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cogl_framebuffer_update_samples_per_pixel (CoglFramebuffer *framebuffer,
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int samples_per_pixel);
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void
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cogl_framebuffer_update_size (CoglFramebuffer *framebuffer,
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int width,
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int height);
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/* XXX: For a public api we might instead want a way to explicitly
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* set the _premult status of a framebuffer or what components we
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* care about instead of exposing the CoglPixelFormat
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* internal_format.
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*
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* The current use case for this api is where we create an offscreen
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* framebuffer for a shared atlas texture that has a format of
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* RGBA_8888 disregarding the premultiplied alpha status for
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* individual atlased textures or whether the alpha component is being
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* discarded. We want to overried the internal_format that will be
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* derived from the texture.
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*/
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void
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_cogl_framebuffer_set_internal_format (CoglFramebuffer *framebuffer,
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CoglPixelFormat internal_format);
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CoglPixelFormat
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cogl_framebuffer_get_internal_format (CoglFramebuffer *framebuffer);
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void
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_cogl_framebuffer_clear_without_flush4f (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_mark_clear_clip_dirty (CoglFramebuffer *framebuffer);
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void
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cogl_framebuffer_set_depth_buffer_clear_needed (CoglFramebuffer *framebuffer);
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/*
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* _cogl_framebuffer_get_clip_stack:
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* @framebuffer: A #CoglFramebuffer
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*
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* Gets a pointer to the current clip stack. A reference is not taken on the
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* stack so if you want to keep it you should call
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* _cogl_clip_stack_ref().
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*
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* Return value: a pointer to the @framebuffer clip stack.
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*/
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CoglClipStack *
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_cogl_framebuffer_get_clip_stack (CoglFramebuffer *framebuffer);
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CoglMatrixStack *
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_cogl_framebuffer_get_modelview_stack (CoglFramebuffer *framebuffer);
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CoglMatrixStack *
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_cogl_framebuffer_get_projection_stack (CoglFramebuffer *framebuffer);
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void
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_cogl_framebuffer_add_dependency (CoglFramebuffer *framebuffer,
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CoglFramebuffer *dependency);
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COGL_EXPORT_TEST void
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_cogl_framebuffer_flush_journal (CoglFramebuffer *framebuffer);
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void
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_cogl_framebuffer_flush_dependency_journals (CoglFramebuffer *framebuffer);
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void
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cogl_context_flush_framebuffer_state (CoglContext *context,
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CoglFramebuffer *draw_buffer,
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CoglFramebuffer *read_buffer,
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CoglFramebufferState state);
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/* This can be called directly by the CoglJournal to draw attributes
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* skipping the implicit journal flush, the framebuffer flush and
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* pipeline validation. */
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void
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_cogl_framebuffer_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_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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void
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cogl_framebuffer_set_viewport4fv (CoglFramebuffer *framebuffer,
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float *viewport);
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void
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cogl_framebuffer_get_viewport4f (CoglFramebuffer *framebuffer,
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float *viewport_x,
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float *viewport_y,
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float *viewport_width,
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float *viewport_height);
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unsigned long
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_cogl_framebuffer_compare (CoglFramebuffer *a,
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CoglFramebuffer *b,
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unsigned long state);
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static inline CoglMatrixEntry *
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_cogl_framebuffer_get_modelview_entry (CoglFramebuffer *framebuffer)
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{
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CoglMatrixStack *modelview_stack =
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_cogl_framebuffer_get_modelview_stack (framebuffer);
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return modelview_stack->last_entry;
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}
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static inline CoglMatrixEntry *
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_cogl_framebuffer_get_projection_entry (CoglFramebuffer *framebuffer)
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{
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CoglMatrixStack *projection_stack =
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_cogl_framebuffer_get_projection_stack (framebuffer);
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return projection_stack->last_entry;
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}
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gboolean
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_cogl_framebuffer_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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CoglJournal *
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cogl_framebuffer_get_journal (CoglFramebuffer *framebuffer);
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CoglFramebufferDriver *
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cogl_framebuffer_get_driver (CoglFramebuffer *framebuffer);
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/**
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* cogl_framebuffer_is_y_flipped:
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* @framebuffer: a #CoglFramebuffer
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*
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* Returns %TRUE if the Y coordinate 0 means the bottom of the framebuffer, and
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* %FALSE if the Y coordinate means the top.
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*/
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gboolean
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cogl_framebuffer_is_y_flipped (CoglFramebuffer *framebuffer);
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