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/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is 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 included
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* 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, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* Sample Usage:
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In addition to the usual X calls to select a visual, create a colormap
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and create a window, you must do the following to use the X/Mesa interface:
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1. Call XMesaCreateVisual() to make an XMesaVisual from an XVisualInfo.
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2. Call XMesaCreateContext() to create an X/Mesa rendering context, given
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the XMesaVisual.
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3. Call XMesaCreateWindowBuffer() to create an XMesaBuffer from an X window
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and XMesaVisual.
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4. Call XMesaMakeCurrent() to bind the XMesaBuffer to an XMesaContext and
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to make the context the current one.
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5. Make gl* calls to render your graphics.
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6. Use XMesaSwapBuffers() when double buffering to swap front/back buffers.
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7. Before the X window is destroyed, call XMesaDestroyBuffer().
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8. Before exiting, call XMesaDestroyVisual and XMesaDestroyContext.
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*/
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#ifndef XM_API_H
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#define XM_API_H
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#include <stdbool.h>
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#include "main/glconfig.h" /* for gl_config */
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#include "frontend/api.h"
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#include "util/u_thread.h"
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#include "frontend/xlibsw_api.h"
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# include <X11/Xlib.h>
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# include <X11/Xlibint.h>
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# include <X11/Xutil.h>
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struct st_context;
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struct hud_context;
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typedef struct xmesa_display *XMesaDisplay;
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typedef struct xmesa_buffer *XMesaBuffer;
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typedef struct xmesa_context *XMesaContext;
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typedef struct xmesa_visual *XMesaVisual;
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struct xmesa_display {
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mtx_t mutex;
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Display *display;
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struct pipe_screen *screen;
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struct pipe_frontend_screen *fscreen;
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struct pipe_context *pipe;
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};
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/*
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* Create a new X/Mesa visual.
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* Input: display - X11 display
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* visinfo - an XVisualInfo pointer
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* rgb_flag - GL_TRUE = RGB mode,
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* GL_FALSE = color index mode
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* alpha_flag - alpha buffer requested?
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* db_flag - GL_TRUE = double-buffered,
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* GL_FALSE = single buffered
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* stereo_flag - stereo visual?
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* ximage_flag - GL_TRUE = use an XImage for back buffer,
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* GL_FALSE = use an off-screen pixmap for back buffer
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* depth_size - requested bits/depth values, or zero
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* stencil_size - requested bits/stencil values, or zero
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* accum_red_size - requested bits/red accum values, or zero
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* accum_green_size - requested bits/green accum values, or zero
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* accum_blue_size - requested bits/blue accum values, or zero
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* accum_alpha_size - requested bits/alpha accum values, or zero
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* num_samples - number of samples/pixel if multisampling, or zero
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* level - visual level, usually 0
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* visualCaveat - ala the GLX extension, usually GLX_NONE_EXT
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* Return; a new XMesaVisual or 0 if error.
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*/
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extern XMesaVisual XMesaCreateVisual( Display *display,
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XVisualInfo * visinfo,
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GLboolean rgb_flag,
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GLboolean alpha_flag,
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GLboolean db_flag,
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GLboolean stereo_flag,
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GLboolean ximage_flag,
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GLint depth_size,
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GLint stencil_size,
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GLint accum_red_size,
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GLint accum_green_size,
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GLint accum_blue_size,
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GLint accum_alpha_size,
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GLint num_samples,
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GLint level,
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GLint visualCaveat );
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/*
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* Destroy an XMesaVisual, but not the associated XVisualInfo.
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*/
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extern void XMesaDestroyVisual( XMesaVisual v );
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/*
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* Create a new XMesaContext for rendering into an X11 window.
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*
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* Input: visual - an XMesaVisual
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* share_list - another XMesaContext with which to share display
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* lists or NULL if no sharing is wanted.
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* Return: an XMesaContext or NULL if error.
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*/
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extern XMesaContext XMesaCreateContext( XMesaVisual v,
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XMesaContext share_list,
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GLuint major, GLuint minor,
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GLuint profileMask,
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GLuint contextFlags);
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/*
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* Destroy a rendering context as returned by XMesaCreateContext()
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*/
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extern void XMesaDestroyContext( XMesaContext c );
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/*
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* Create an XMesaBuffer from an X window.
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*/
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extern XMesaBuffer XMesaCreateWindowBuffer( XMesaVisual v, Window w );
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/*
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* Create an XMesaBuffer from an X pixmap.
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*/
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extern XMesaBuffer XMesaCreatePixmapBuffer( XMesaVisual v,
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Pixmap p,
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Colormap cmap );
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/*
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* Destroy an XMesaBuffer, but not the corresponding window or pixmap.
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*/
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extern void XMesaDestroyBuffer( XMesaBuffer b );
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/*
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* Return the XMesaBuffer handle which corresponds to an X drawable, if any.
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*
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* New in Mesa 2.3.
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*/
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extern XMesaBuffer XMesaFindBuffer( Display *dpy,
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Drawable d );
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/*
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* Bind two buffers (read and draw) to a context and make the
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* context the current one.
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* New in Mesa 3.3
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*/
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extern GLboolean XMesaMakeCurrent2( XMesaContext c,
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XMesaBuffer drawBuffer,
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XMesaBuffer readBuffer );
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/*
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* Unbind the current context from its buffer.
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*/
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extern GLboolean XMesaUnbindContext( XMesaContext c );
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/*
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* Return a handle to the current context.
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*/
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extern XMesaContext XMesaGetCurrentContext( void );
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/*
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* Swap the front and back buffers for the given buffer. No action is
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* taken if the buffer is not double buffered.
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*/
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extern void XMesaSwapBuffers( XMesaBuffer b );
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/*
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* Copy a sub-region of the back buffer to the front buffer.
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*
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* New in Mesa 2.6
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*/
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extern void XMesaCopySubBuffer( XMesaBuffer b,
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int x,
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int y,
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int width,
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int height );
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/*
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* Flush/sync a context
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*/
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extern void XMesaFlush( XMesaContext c );
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/*
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* Scan for XMesaBuffers whose window/pixmap has been destroyed, then free
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* any memory used by that buffer.
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*
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* New in Mesa 2.3.
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*/
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extern void XMesaGarbageCollect( void );
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/*
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* Create a pbuffer.
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* New in Mesa 4.1
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*/
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extern XMesaBuffer XMesaCreatePBuffer(XMesaVisual v, Colormap cmap,
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unsigned int width, unsigned int height);
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/*
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* Texture from Pixmap
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* New in Mesa 7.1
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*/
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extern void
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XMesaBindTexImage(Display *dpy, XMesaBuffer drawable, int buffer,
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const int *attrib_list);
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extern void
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XMesaReleaseTexImage(Display *dpy, XMesaBuffer drawable, int buffer);
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extern XMesaBuffer
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XMesaCreatePixmapTextureBuffer(XMesaVisual v, Pixmap p,
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Colormap cmap,
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int format, int target, int mipmap);
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extern void
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XMesaCopyContext(XMesaContext src, XMesaContext dst, unsigned long mask);
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/***********************************************************************
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*/
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/**
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* Visual inforation, derived from GLvisual.
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* Basically corresponds to an XVisualInfo.
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*/
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struct xmesa_visual {
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struct gl_config mesa_visual;/* Device independent visual parameters */
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int screen, visualID, visualType;
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Display *display; /* The X11 display */
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XVisualInfo * visinfo; /* X's visual info (pointer to private copy) */
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GLint BitsPerPixel; /* True bits per pixel for XImages */
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GLboolean ximage_flag; /* Use XImage for back buffer (not pixmap)? */
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struct st_visual stvis;
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};
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/**
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* Context info, derived from st_context.
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* Basically corresponds to a GLXContext.
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*/
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struct xmesa_context {
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struct st_context *st;
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XMesaVisual xm_visual; /** pixel format info */
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XMesaBuffer xm_buffer; /** current drawbuffer */
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XMesaBuffer xm_read_buffer; /** current readbuffer */
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struct hud_context *hud;
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};
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/**
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* Types of X/GLX drawables we might render into.
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*/
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typedef enum {
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WINDOW, /* An X window */
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GLXWINDOW, /* GLX window */
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PIXMAP, /* GLX pixmap */
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PBUFFER /* GLX Pbuffer */
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} BufferType;
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/**
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* Framebuffer information, derived from.
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* Basically corresponds to a GLXDrawable.
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*/
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struct xmesa_buffer {
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struct pipe_frontend_drawable *drawable;
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struct xlib_drawable ws;
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GLboolean wasCurrent; /* was ever the current buffer? */
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XMesaVisual xm_visual; /* the X/Mesa visual */
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Colormap cmap; /* the X colormap */
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BufferType type; /* window, pixmap, pbuffer or glxwindow */
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GLboolean largestPbuffer; /**< for pbuffers */
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GLboolean preservedContents; /**< for pbuffers */
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XImage *tempImage;
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unsigned long selectedEvents;/* for pbuffers only */
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GC gc; /* scratch GC for span, line, tri drawing */
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/* GLX_EXT_texture_from_pixmap */
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GLint TextureTarget; /** GLX_TEXTURE_1D_EXT, for example */
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GLint TextureFormat; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */
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GLint TextureMipmap; /** 0 or 1 */
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struct xmesa_buffer *Next; /* Linked list pointer: */
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unsigned width, height;
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};
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extern const char *
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xmesa_get_name(void);
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extern int
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xmesa_init(Display *dpy);
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extern XMesaBuffer
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xmesa_find_buffer(Display *dpy, Colormap cmap, XMesaBuffer notThis);
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extern void
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xmesa_get_window_size(Display *dpy, XMesaBuffer b,
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GLuint *width, GLuint *height);
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extern void
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xmesa_notify_invalid_buffer(XMesaBuffer b);
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extern void
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xmesa_check_buffer_size(XMesaBuffer b);
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extern void
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xmesa_destroy_buffers_on_display(Display *dpy);
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extern void
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xmesa_close_display(Display *dpy);
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static inline GLuint
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xmesa_buffer_width(XMesaBuffer b)
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{
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return b->width;
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}
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static inline GLuint
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xmesa_buffer_height(XMesaBuffer b)
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{
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return b->height;
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}
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bool xmesa_strict_invalidate(void);
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#endif
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