+++ /dev/null
-<html><head><title>Mesa fbdev/DRI Environment</title>
-
-
-
-<link rel="stylesheet" type="text/css" href="mesa.css"></head>
-
-<body>
-
-<center><h1>Mesa fbdev/DRI Drivers</h1></center>
-<br>
-
-<h1><center>NOTE: this information is obsolete and will be removed at
-a future date</center></h1>
-
-<h1>1. Introduction</h1>
-
-<p>
-The fbdev/DRI environment supports hardware-accelerated 3D rendering without
-the X window system. This is typically used for embedded applications.
-</p>
-
-<p>
-Contributors to this project include Jon Smirl, Keith Whitwell and Dave Airlie.
-</p>
-
-<p>
-Applications in the fbdev/DRI environment use
-the MiniGLX interface to choose pixel
-formats, create rendering contexts, etc. It's a subset of the GLX and
-Xlib interfaces allowing some degree of application portability between
-the X and X-less environments.
-</p>
-
-<p>
-Note that this environment is not well-supported and these instructions
-may not be completely up to date.
-</p>
-<br>
-
-
-
-<h1>2. Compilation</h1>
-<p>
-
-<h2>2.1 glxproto</h2>
-
-Get <a href="http://cvsweb.xfree86.org/cvsweb/*checkout*/xc/include/GL/glxproto.h?rev=1.9">glxproto.h</a>. Copy it to the /mesa/include/GL/ directory.
-</p>
-
-<h2>2.2 libpciaccess</h2>
-<p>
-Check if you have libpciaccess installed:
-</p>
-
-<pre>pkg-config --modversion pciaccess
-</pre>
-<p>
-If not you can download the latest code from:
-</p>
-<pre> git clone git://anongit.freedesktop.org/git/xorg/lib/libpciaccess
-</pre>
-<p>
-Run autogen.sh to generate a configure file. autogen.sh uses autoconf
-utility. This utility may not be installed with your linux distro,
-check if it is available. if not you can use your package manager or
-type:
-</p>
-<pre>sudo apt-get install autoconf
-</pre>
-The next step is to install the libpciaccess library.
-<pre>make
-make install
-</pre>
-<p> Now your libpciaccess.a file is saved into /usr/local/lib
-directory. If you have a libpciaccess.a in /usr/lib you may simply copy
-and overwrite these files. Don't forget to copy libpciaccess.pc file to
-/usr/lib/pkgconfig, which is also located in /usr/local/lib/pkgconfig/.
-Or you may use the following system variables:
-</p>
-<pre>export LD_LIBRARY_PATH=/usr/local/lib
-export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig
-</pre>
-
-<h2>2.3 drm</h2>
-
-<p>The next step is to compile the drm. DRM consists of two seperate parts,
-the DRM client library(lindrm.so) and kernel device module(such as
-radeon.ko). We need to make a small change in kernel device module. So
-you need to download the kernel source. You may choose the nearest
-mirror from www.kernel.org, or you are using Fedora Core 5, for
-example, you may need to install RPMs such as:
-kernel-smp-devel-2.16.15-1.2054_FC5.i686.rpm
-kernel-devel-2.6.15-1.2054_FC5.i686.rpm
-etc. You can find a detailed information <a href="http://www.howtoforge.com/kernel_compilation_fedora">here.</a>
-</p>
-
-<p>You will find drm_drv.c at /usr/src/LINUX-VERSION/drivers/char/drm/. Edit this code and comment out the following part:
-</p>
-
-<pre>
- /* ||
- ((ioctl->flags & DRM_MASTER) && !priv->master)*/
-</pre>
-Now you are ready to compile your kernel. If your kernel version is
-identical to the version you have compiled, you can simply over write
-your new "ko" files over older ones. If you have compiled a different
-kernel, you must configure your grub or lilo to be able to boot your
-new kernel. <p>
-You'll need fbdev header files. Check with:
-</p>
-<pre>
- ls -l /usr/include/linux/fb.
-</pre>
-<p>This file may be missing if you have not installed linux header files.
-
-
-<h2>2.4 Mesa</h2>
-
-</p><p>Get latest development Mesa sources from git repository
-(currently 7.1-prerelease)
-</p>
-<pre>
- git clone git://anongit.freedesktop.org/git/mesa/mesa
-</pre>
-
-<p>You will need the makedepend utility which is a part of mesa project
-to build your linux-solo. You probably wont have this utility. You can
-download its source from following git repulsitory:
-</p>
-<pre>
- git clone git://anongit.freedesktop.org/git/xorg/util/makedepend
-</pre>
-
-<p>Get the latest stable mesa version from SourceForge (currently 7.0.3)
-<a href="http://sourceforge.net/project/showfiles.php?group_id=3">http://sourceforge.net/project/showfiles.php?group_id=3</a>
-</p>
-
-<p>Copy the miniglx folder from 7.1-prerelease to 7.0.3.
-You may also extract GLUT to 7.0.3 version at this step.
-</p>
-
-<p>Edit linux-solo.conf at /conf directory, just only compile the
-graphics driver you need, delete the unwanted drivers names from the
-list(some drivers are causing problems...)
-</p>
-<pre>
- while(build==0)
- {
- make linux-solo
-
- There will be some missing header files, copy them from 7.1-prerelease
- }
-</pre>
-
-<p>
-When complete you should have the following:
-</p>
-<ul>
-<li>lib/libGL.so - the GL library which applications link with
-</li><li>lib/*_dri_so - DRI drivers
-</li><li>lib/miniglx.conf - sample MiniGLX config file
-</li><li>progs/miniglx/* - several MiniGLX sample programs
-</li></ul>
-
-To install these files into appropriate locations in system:
-<pre>
- make install
-</pre>
-
-Now your openGL libraries are copied to /usr/local/lib and
-miniglx.conf is copied to /etc. You may copy them to /usr/lib and
-overwrite your old GL libraries. Or you may export following variable:
-
-<pre>
- export LIBGL_DRIVERS_PATH=/usr/local/lib
-</pre>
-<br>
-
-
-<h1>3. Using fbdev/DRI</h1>
-
-<p>
-If an X server currently running, exit/stop it so you're working from
-the console. Following command shuts down the x window and also the multi user support.
-</p>
-<pre>
- init 1
-</pre>
-
-<p>Also you may define the runlevel as 1 in "/etc/inittab". Your system
-will always start in single user mode and without x-window with this
-option set.
-</p><h2>3.1 Load Kernel Modules</h2>
-
-<p>
-You'll need to load the kernel modules specific to your graphics hardware.
-Typically, this consists of the agpgart module, an fbdev driver module
-and the DRM kernel module.
-</p>
-<p>
-As root, the kernel modules can be loaded as follows:
-</p>
-
-<p>
-If you have Intel i915/i945 hardware:
-</p>
-<pre> modprobe agpgart # the AGP GART module
- modprobe intelfb # the Intel fbdev driver
- modprobe i915 # the i915/945 DRI kernel module
-</pre>
-
-<p>
-If you have ATI Radeon/R200 hardware:
-</p>
-<pre> modprobe agpgart # the AGP GART module
- modprobe radeonfb # the Radeon fbdev driver
- modprobe radeon # the Radeon DRI kernel module
-</pre>
-
-<p>
-If you have ATI Rage 128 hardware:
-</p>
-<pre> modprobe agpgart # the AGP GART module
- modprobe aty128fb # the Rage 128 fbdev driver
- modprobe r128 # the Rage 128 DRI kernel module
-</pre>
-
-<p>
-If you have Matrox G200/G400 hardware:
-</p>
-<pre> modprobe agpgart # the AGP GART module
- modprobe mgafb # the Matrox fbdev driver
- modprobe mga # the Matrox DRI kernel module
-</pre>
-
-<p>
-To verify that the agpgart, fbdev and drm modules are loaded:
-</p>
-<pre> ls -l /dev/agpgart /dev/fb* /dev/dri
-</pre>
-<p>
-Alternately, use lsmod to inspect the currently installed modules.
-If you have problems, look at the output of dmesg.
-</p>
-
-
-<h2>3.2 Configuration File</h2>
-
-<p>
-review/edit /etc/miniglx.conf.
-Alternately, the MINIGLX_CONF environment variable can be used to
-indicate the location of miniglx.conf
-</p>
-
-To determine the pciBusID value, run lspci and examine the output.
-For example:
-<p></p>
-<pre> /sbin/lspci:
- 00:02.0 VGA compatible controller: Intel Corporation 82915G/GV/910GL Express Chipset Family Graphics Controller (rev 04)
-</pre>
-<p>
-00:02.0 indicates that pciBusID should be PCI:0:2:0
-</p>
-
-
-
-
-<h2>3.3 Running fbdev/DRI Programs</h2>
-
-<p>
-Make sure your LD_LIBRARY_PATH environment variable is set to the
-location of the libGL.so library. You may need to append other paths
-to LD_LIBRARY_PATH if libpciaccess.so is in a non-standard location,
-for example.
-</p>
-
-<p>
-Change to the <code>Mesa/progs/miniglx/</code> directory and
-start the sample_server program in the background:
-</p>
-<pre> ./sample_server &
-</pre>
-
-<p>
-Then try running the <code>miniglxtest</code> program:
-</p>
-<pre> ./miniglxtest
-</pre>
-<p>
-You should see a rotating quadrilateral which changes color as it rotates.
-It will exit automatically after a bit.
-</p>
-
-<p>
-If you run other tests in the miniglx/ directory, you may want to run
-them from a remote shell so that you can stop them with ctrl-C.
-</p>
-<br>
-
-
-<h1>4.0 Troubleshooting</h1>
-
-<ol>
-<li>
-If you try to run miniglxtest and get the following:
-<br>
-<pre> [miniglx] failed to probe chipset
- connect: Connection refused
- server connection lost
-</pre>
-It means that the sample_server process is not running.
-<br>
-<br>
-</li>
-</ol>
-
-
-<h1>5.0 Programming Information</h1>
-
-<p>
-OpenGL/Mesa is interfaced to fbdev via the MiniGLX interface.
-MiniGLX is a subset of Xlib and GLX API functions which provides just
-enough functionality to setup OpenGL rendering and respond to simple
-input events.
-</p>
-
-<p>
-Since MiniGLX is a subset of the usual Xlib and GLX APIs, programs written
-to the MiniGLX API can also be run on full Xlib/GLX implementations.
-This allows some degree of flexibility for software development and testing.
-</p>
-
-<p>
-However, the MiniGLX API is not binary-compatible with full Xlib/GLX.
-Some of the structures are different and some macros/functions work
-differently.
-See the GL/miniglx.h header file for details.
-</p>
-
-
-
-</body>
-</html>
+++ /dev/null
-/*
- * Mesa 3-D graphics library
- * Version: 7.1
- *
- * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-/*
- * OpenGL (Mesa) interface for fbdev.
- * For info about fbdev:
- * http://www.tldp.org/HOWTO/Framebuffer-HOWTO.html
- *
- * known VGA modes
- * Colours 640x400 640x480 800x600 1024x768 1152x864 1280x1024 1600x1200
- * --------+--------------------------------------------------------------
- * 4 bits | ? ? 0x302 ? ? ? ?
- * 8 bits | 0x300 0x301 0x303 0x305 0x161 0x307 0x31C
- * 15 bits | ? 0x310 0x313 0x316 0x162 0x319 0x31D
- * 16 bits | ? 0x311 0x314 0x317 0x163 0x31A 0x31E
- * 24 bits | ? 0x312 0x315 0x318 ? 0x31B 0x31F
- * 32 bits | ? ? ? ? 0x164 ?
- */
-
-#ifdef USE_GLFBDEV_DRIVER
-
-#include "GL/glfbdev.h"
-#include <linux/fb.h>
-#include "main/glheader.h"
-#include "main/buffers.h"
-#include "main/context.h"
-#include "main/extensions.h"
-#include "main/fbobject.h"
-#include "main/framebuffer.h"
-#include "main/imports.h"
-#include "main/renderbuffer.h"
-#include "main/texformat.h"
-#include "main/teximage.h"
-#include "main/texstore.h"
-#include "vbo/vbo.h"
-#include "swrast/swrast.h"
-#include "swrast_setup/swrast_setup.h"
-#include "tnl/tnl.h"
-#include "tnl/t_context.h"
-#include "tnl/t_pipeline.h"
-#include "drivers/common/driverfuncs.h"
-
-
-/**
- * Pixel formats we support:
- */
-#define PF_B8G8R8 1
-#define PF_B8G8R8A8 2
-#define PF_B5G6R5 3
-#define PF_B5G5R5 4
-
-
-/**
- * Derived from Mesa's struct gl_config class.
- */
-struct GLFBDevVisualRec {
- struct gl_config glvisual; /* base class */
- struct fb_fix_screeninfo fix;
- struct fb_var_screeninfo var;
- int pixelFormat;
-};
-
-/**
- * Derived from Mesa's struct gl_framebuffer class.
- */
-struct GLFBDevBufferRec {
- struct gl_framebuffer glframebuffer; /* base class */
- GLFBDevVisualPtr visual;
- struct fb_fix_screeninfo fix;
- struct fb_var_screeninfo var;
- size_t size; /* color buffer size in bytes */
- GLuint bytesPerPixel;
-};
-
-/**
- * Derived from Mesa's struct gl_context class.
- */
-struct GLFBDevContextRec {
- struct gl_context glcontext; /* base class */
- GLFBDevVisualPtr visual;
- GLFBDevBufferPtr drawBuffer;
- GLFBDevBufferPtr readBuffer;
- GLFBDevBufferPtr curBuffer;
-};
-
-/**
- * Derived from Mesa's gl_renderbuffer class.
- */
-struct GLFBDevRenderbufferRec {
- struct gl_renderbuffer Base;
- GLubyte *bottom; /* pointer to last row */
- GLuint rowStride; /* in bytes */
- GLboolean mallocedBuffer;
-};
-
-
-/**********************************************************************/
-/* Internal device driver functions */
-/**********************************************************************/
-
-
-static const GLubyte *
-get_string(struct gl_context *ctx, GLenum pname)
-{
- (void) ctx;
- switch (pname) {
- case GL_RENDERER:
- return (const GLubyte *) "Mesa glfbdev";
- default:
- return NULL;
- }
-}
-
-
-static void
-update_state( struct gl_context *ctx, GLuint new_state )
-{
- /* not much to do here - pass it on */
- _swrast_InvalidateState( ctx, new_state );
- _swsetup_InvalidateState( ctx, new_state );
- _vbo_InvalidateState( ctx, new_state );
- _tnl_InvalidateState( ctx, new_state );
-}
-
-
-static void
-get_buffer_size( struct gl_framebuffer *buffer, GLuint *width, GLuint *height )
-{
- const GLFBDevBufferPtr fbdevbuffer = (GLFBDevBufferPtr) buffer;
- *width = fbdevbuffer->var.xres;
- *height = fbdevbuffer->var.yres;
-}
-
-
-/**
- * We only implement this function as a mechanism to check if the
- * framebuffer size has changed (and update corresponding state).
- */
-static void
-viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
-{
- GLuint newWidth, newHeight;
- struct gl_framebuffer *buffer;
-
- buffer = ctx->WinSysDrawBuffer;
- get_buffer_size( buffer, &newWidth, &newHeight );
- if (buffer->Width != newWidth || buffer->Height != newHeight) {
- _mesa_resize_framebuffer(ctx, buffer, newWidth, newHeight );
- }
-
- buffer = ctx->WinSysReadBuffer;
- get_buffer_size( buffer, &newWidth, &newHeight );
- if (buffer->Width != newWidth || buffer->Height != newHeight) {
- _mesa_resize_framebuffer(ctx, buffer, newWidth, newHeight );
- }
-}
-
-
-/*
- * Generate code for span functions.
- */
-
-/* 24-bit BGR */
-#define NAME(PREFIX) PREFIX##_B8G8R8
-#define RB_TYPE GLubyte
-#define SPAN_VARS \
- struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
-#define INIT_PIXEL_PTR(P, X, Y) \
- GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X) * 3
-#define INC_PIXEL_PTR(P) P += 3
-#define STORE_PIXEL(DST, X, Y, VALUE) \
- DST[0] = VALUE[BCOMP]; \
- DST[1] = VALUE[GCOMP]; \
- DST[2] = VALUE[RCOMP]
-#define FETCH_PIXEL(DST, SRC) \
- DST[RCOMP] = SRC[2]; \
- DST[GCOMP] = SRC[1]; \
- DST[BCOMP] = SRC[0]; \
- DST[ACOMP] = CHAN_MAX
-
-#include "swrast/s_spantemp.h"
-
-
-/* 32-bit BGRA */
-#define NAME(PREFIX) PREFIX##_B8G8R8A8
-#define RB_TYPE GLubyte
-#define SPAN_VARS \
- struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
-#define INIT_PIXEL_PTR(P, X, Y) \
- GLubyte *P = frb->bottom - (Y) * frb->rowStride + (X) * 4
-#define INC_PIXEL_PTR(P) P += 4
-#define STORE_PIXEL(DST, X, Y, VALUE) \
- DST[0] = VALUE[BCOMP]; \
- DST[1] = VALUE[GCOMP]; \
- DST[2] = VALUE[RCOMP]; \
- DST[3] = VALUE[ACOMP]
-#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
- DST[0] = VALUE[BCOMP]; \
- DST[1] = VALUE[GCOMP]; \
- DST[2] = VALUE[RCOMP];
-#define FETCH_PIXEL(DST, SRC) \
- DST[RCOMP] = SRC[2]; \
- DST[GCOMP] = SRC[1]; \
- DST[BCOMP] = SRC[0]; \
- DST[ACOMP] = SRC[3]
-
-#include "swrast/s_spantemp.h"
-
-
-/* 16-bit BGR (XXX implement dithering someday) */
-#define NAME(PREFIX) PREFIX##_B5G6R5
-#define RB_TYPE GLubyte
-#define SPAN_VARS \
- struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
-#define INIT_PIXEL_PTR(P, X, Y) \
- GLushort *P = (GLushort *) (frb->bottom - (Y) * frb->rowStride + (X) * 2)
-#define INC_PIXEL_PTR(P) P += 1
-#define STORE_PIXEL(DST, X, Y, VALUE) \
- DST[0] = ( (((VALUE[RCOMP]) & 0xf8) << 8) | (((VALUE[GCOMP]) & 0xfc) << 3) | ((VALUE[BCOMP]) >> 3) )
-#define FETCH_PIXEL(DST, SRC) \
- DST[RCOMP] = ( (((SRC[0]) >> 8) & 0xf8) | (((SRC[0]) >> 11) & 0x7) ); \
- DST[GCOMP] = ( (((SRC[0]) >> 3) & 0xfc) | (((SRC[0]) >> 5) & 0x3) ); \
- DST[BCOMP] = ( (((SRC[0]) << 3) & 0xf8) | (((SRC[0]) ) & 0x7) ); \
- DST[ACOMP] = CHAN_MAX
-
-#include "swrast/s_spantemp.h"
-
-
-/* 15-bit BGR (XXX implement dithering someday) */
-#define NAME(PREFIX) PREFIX##_B5G5R5
-#define RB_TYPE GLubyte
-#define SPAN_VARS \
- struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
-#define INIT_PIXEL_PTR(P, X, Y) \
- GLushort *P = (GLushort *) (frb->bottom - (Y) * frb->rowStride + (X) * 2)
-#define INC_PIXEL_PTR(P) P += 1
-#define STORE_PIXEL(DST, X, Y, VALUE) \
- DST[0] = ( (((VALUE[RCOMP]) & 0xf8) << 7) | (((VALUE[GCOMP]) & 0xf8) << 2) | ((VALUE[BCOMP]) >> 3) )
-#define FETCH_PIXEL(DST, SRC) \
- DST[RCOMP] = ( (((SRC[0]) >> 7) & 0xf8) | (((SRC[0]) >> 10) & 0x7) ); \
- DST[GCOMP] = ( (((SRC[0]) >> 2) & 0xf8) | (((SRC[0]) >> 5) & 0x7) ); \
- DST[BCOMP] = ( (((SRC[0]) << 3) & 0xf8) | (((SRC[0]) ) & 0x7) ); \
- DST[ACOMP] = CHAN_MAX
-
-#include "swrast/s_spantemp.h"
-
-
-/**********************************************************************/
-/* Public API functions */
-/**********************************************************************/
-
-
-const char *
-glFBDevGetString( int str )
-{
- switch (str) {
- case GLFBDEV_VENDOR:
- return "Mesa Project";
- case GLFBDEV_VERSION:
- return "1.0.1";
- default:
- return NULL;
- }
-}
-
-
-GLFBDevProc
-glFBDevGetProcAddress( const char *procName )
-{
- struct name_address {
- const char *name;
- const GLFBDevProc func;
- };
- static const struct name_address functions[] = {
- { "glFBDevGetString", (GLFBDevProc) glFBDevGetString },
- { "glFBDevGetProcAddress", (GLFBDevProc) glFBDevGetProcAddress },
- { "glFBDevCreateVisual", (GLFBDevProc) glFBDevCreateVisual },
- { "glFBDevDestroyVisual", (GLFBDevProc) glFBDevDestroyVisual },
- { "glFBDevGetVisualAttrib", (GLFBDevProc) glFBDevGetVisualAttrib },
- { "glFBDevCreateBuffer", (GLFBDevProc) glFBDevCreateBuffer },
- { "glFBDevDestroyBuffer", (GLFBDevProc) glFBDevDestroyBuffer },
- { "glFBDevGetBufferAttrib", (GLFBDevProc) glFBDevGetBufferAttrib },
- { "glFBDevGetCurrentDrawBuffer", (GLFBDevProc) glFBDevGetCurrentDrawBuffer },
- { "glFBDevGetCurrentReadBuffer", (GLFBDevProc) glFBDevGetCurrentReadBuffer },
- { "glFBDevSwapBuffers", (GLFBDevProc) glFBDevSwapBuffers },
- { "glFBDevCreateContext", (GLFBDevProc) glFBDevCreateContext },
- { "glFBDevDestroyContext", (GLFBDevProc) glFBDevDestroyContext },
- { "glFBDevGetContextAttrib", (GLFBDevProc) glFBDevGetContextAttrib },
- { "glFBDevGetCurrentContext", (GLFBDevProc) glFBDevGetCurrentContext },
- { "glFBDevMakeCurrent", (GLFBDevProc) glFBDevMakeCurrent },
- { NULL, NULL }
- };
- const struct name_address *entry;
- for (entry = functions; entry->name; entry++) {
- if (strcmp(entry->name, procName) == 0) {
- return entry->func;
- }
- }
- return _glapi_get_proc_address(procName);
-}
-
-
-GLFBDevVisualPtr
-glFBDevCreateVisual( const struct fb_fix_screeninfo *fixInfo,
- const struct fb_var_screeninfo *varInfo,
- const int *attribs )
-{
- GLFBDevVisualPtr vis;
- const int *attrib;
- GLboolean dbFlag = GL_FALSE, stereoFlag = GL_FALSE;
- GLint redBits = 0, greenBits = 0, blueBits = 0, alphaBits = 0;
- GLint depthBits = 0, stencilBits = 0;
- GLint accumRedBits = 0, accumGreenBits = 0;
- GLint accumBlueBits = 0, accumAlphaBits = 0;
- GLint numSamples = 0;
-
- ASSERT(fixInfo);
- ASSERT(varInfo);
-
- vis = CALLOC_STRUCT(GLFBDevVisualRec);
- if (!vis)
- return NULL;
-
- vis->fix = *fixInfo; /* struct assignment */
- vis->var = *varInfo; /* struct assignment */
-
- for (attrib = attribs; attrib && *attrib != GLFBDEV_NONE; attrib++) {
- switch (*attrib) {
- case GLFBDEV_DOUBLE_BUFFER:
- dbFlag = GL_TRUE;
- break;
- case GLFBDEV_DEPTH_SIZE:
- depthBits = attrib[1];
- attrib++;
- break;
- case GLFBDEV_STENCIL_SIZE:
- stencilBits = attrib[1];
- attrib++;
- break;
- case GLFBDEV_ACCUM_SIZE:
- accumRedBits = accumGreenBits = accumBlueBits = accumAlphaBits
- = attrib[1];
- attrib++;
- break;
- case GLFBDEV_LEVEL:
- /* ignored for now */
- break;
- case GLFBDEV_MULTISAMPLE:
- numSamples = attrib[1];
- attrib++;
- break;
- case GLFBDEV_COLOR_INDEX:
- /* Mesa no longer supports color-index rendering. */
- default:
- /* unexpected token */
- free(vis);
- return NULL;
- }
- }
-
- redBits = varInfo->red.length;
- greenBits = varInfo->green.length;
- blueBits = varInfo->blue.length;
- alphaBits = varInfo->transp.length;
-
- if (fixInfo->visual == FB_VISUAL_TRUECOLOR ||
- fixInfo->visual == FB_VISUAL_DIRECTCOLOR) {
- if (varInfo->bits_per_pixel == 24
- && varInfo->red.offset == 16
- && varInfo->green.offset == 8
- && varInfo->blue.offset == 0) {
- vis->pixelFormat = PF_B8G8R8;
- }
- else if (varInfo->bits_per_pixel == 32
- && varInfo->red.offset == 16
- && varInfo->green.offset == 8
- && varInfo->blue.offset == 0) {
- vis->pixelFormat = PF_B8G8R8A8;
- }
- else if (varInfo->bits_per_pixel == 16
- && varInfo->red.offset == 11
- && varInfo->green.offset == 5
- && varInfo->blue.offset == 0) {
- vis->pixelFormat = PF_B5G6R5;
- }
- else if (varInfo->bits_per_pixel == 16
- && varInfo->red.offset == 10
- && varInfo->green.offset == 5
- && varInfo->blue.offset == 0) {
- vis->pixelFormat = PF_B5G5R5;
- }
- else {
- _mesa_problem(NULL, "Unsupported fbdev RGB visual/bitdepth!\n");
- free(vis);
- return NULL;
- }
- }
-
- if (!_mesa_initialize_visual(&vis->glvisual, dbFlag, stereoFlag,
- redBits, greenBits, blueBits, alphaBits,
- depthBits, stencilBits,
- accumRedBits, accumGreenBits,
- accumBlueBits, accumAlphaBits,
- numSamples)) {
- /* something was invalid */
- free(vis);
- return NULL;
- }
-
- return vis;
-}
-
-
-void
-glFBDevDestroyVisual( GLFBDevVisualPtr visual )
-{
- if (visual)
- free(visual);
-}
-
-
-int
-glFBDevGetVisualAttrib( const GLFBDevVisualPtr visual, int attrib)
-{
- /* XXX unfinished */
- (void) visual;
- (void) attrib;
- return -1;
-}
-
-
-static void
-delete_renderbuffer(struct gl_renderbuffer *rb)
-{
- struct GLFBDevRenderbufferRec *frb = (struct GLFBDevRenderbufferRec *) rb;
- if (frb->mallocedBuffer) {
- free(frb->Base.Data);
- }
- free(frb);
-}
-
-
-static GLboolean
-renderbuffer_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
- GLenum internalFormat, GLuint width, GLuint height)
-{
- /* no-op: the renderbuffer storage is allocated just once when it's
- * created. Never resized or reallocated.
- */
- return GL_TRUE;
-}
-
-
-static struct GLFBDevRenderbufferRec *
-new_glfbdev_renderbuffer(void *bufferStart, const GLFBDevVisualPtr visual)
-{
- struct GLFBDevRenderbufferRec *rb = CALLOC_STRUCT(GLFBDevRenderbufferRec);
- if (rb) {
- GLuint name = 0;
- int pixelFormat = visual->pixelFormat;
-
- _mesa_init_renderbuffer(&rb->Base, name);
-
- rb->Base.Delete = delete_renderbuffer;
- rb->Base.AllocStorage = renderbuffer_storage;
-
- if (pixelFormat == PF_B8G8R8) {
- rb->Base.GetRow = get_row_B8G8R8;
- rb->Base.GetValues = get_values_B8G8R8;
- rb->Base.PutRow = put_row_B8G8R8;
- rb->Base.PutRowRGB = put_row_rgb_B8G8R8;
- rb->Base.PutMonoRow = put_mono_row_B8G8R8;
- rb->Base.PutValues = put_values_B8G8R8;
- rb->Base.PutMonoValues = put_mono_values_B8G8R8;
- }
- else if (pixelFormat == PF_B8G8R8A8) {
- rb->Base.GetRow = get_row_B8G8R8A8;
- rb->Base.GetValues = get_values_B8G8R8A8;
- rb->Base.PutRow = put_row_B8G8R8A8;
- rb->Base.PutRowRGB = put_row_rgb_B8G8R8A8;
- rb->Base.PutMonoRow = put_mono_row_B8G8R8A8;
- rb->Base.PutValues = put_values_B8G8R8A8;
- rb->Base.PutMonoValues = put_mono_values_B8G8R8A8;
- }
- else if (pixelFormat == PF_B5G6R5) {
- rb->Base.GetRow = get_row_B5G6R5;
- rb->Base.GetValues = get_values_B5G6R5;
- rb->Base.PutRow = put_row_B5G6R5;
- rb->Base.PutRowRGB = put_row_rgb_B5G6R5;
- rb->Base.PutMonoRow = put_mono_row_B5G6R5;
- rb->Base.PutValues = put_values_B5G6R5;
- rb->Base.PutMonoValues = put_mono_values_B5G6R5;
- }
- else if (pixelFormat == PF_B5G5R5) {
- rb->Base.GetRow = get_row_B5G5R5;
- rb->Base.GetValues = get_values_B5G5R5;
- rb->Base.PutRow = put_row_B5G5R5;
- rb->Base.PutRowRGB = put_row_rgb_B5G5R5;
- rb->Base.PutMonoRow = put_mono_row_B5G5R5;
- rb->Base.PutValues = put_values_B5G5R5;
- rb->Base.PutMonoValues = put_mono_values_B5G5R5;
- }
-
- rb->Base.InternalFormat = GL_RGBA;
- rb->Base._BaseFormat = GL_RGBA;
- rb->Base.DataType = GL_UNSIGNED_BYTE;
- rb->Base.Data = bufferStart;
-
- rb->rowStride = visual->var.xres_virtual * visual->var.bits_per_pixel / 8;
- rb->bottom = (GLubyte *) bufferStart
- + (visual->var.yres - 1) * rb->rowStride;
-
- rb->Base.Width = visual->var.xres;
- rb->Base.Height = visual->var.yres;
-
- /*
- rb->Base.RedBits = visual->var.red.length;
- rb->Base.GreenBits = visual->var.green.length;
- rb->Base.BlueBits = visual->var.blue.length;
- rb->Base.AlphaBits = visual->var.transp.length;
- */
-
- rb->Base.InternalFormat = pixelFormat;
- }
- return rb;
-}
-
-GLFBDevBufferPtr
-glFBDevCreateBuffer( const struct fb_fix_screeninfo *fixInfo,
- const struct fb_var_screeninfo *varInfo,
- const GLFBDevVisualPtr visual,
- void *frontBuffer, void *backBuffer, size_t size )
-{
- struct GLFBDevRenderbufferRec *frontrb, *backrb;
- GLFBDevBufferPtr buf;
-
- ASSERT(visual);
- ASSERT(frontBuffer);
- ASSERT(size > 0);
-
- /* this is to update the visual if there was a resize and the
- buffer is created again */
- visual->var = *varInfo;
- visual->fix = *fixInfo;
-
- if (visual->fix.visual != fixInfo->visual ||
- visual->fix.type != fixInfo->type ||
- visual->var.bits_per_pixel != varInfo->bits_per_pixel ||
- visual->var.grayscale != varInfo->grayscale ||
- visual->var.red.offset != varInfo->red.offset ||
- visual->var.green.offset != varInfo->green.offset ||
- visual->var.blue.offset != varInfo->blue.offset ||
- visual->var.transp.offset != varInfo->transp.offset) {
- /* visual mismatch! */
- return NULL;
- }
-
- buf = CALLOC_STRUCT(GLFBDevBufferRec);
- if (!buf)
- return NULL;
-
- /* basic framebuffer setup */
- _mesa_initialize_window_framebuffer(&buf->glframebuffer, &visual->glvisual);
- /* add front renderbuffer */
- frontrb = new_glfbdev_renderbuffer(frontBuffer, visual);
- _mesa_add_renderbuffer(&buf->glframebuffer, BUFFER_FRONT_LEFT,
- &frontrb->Base);
- /* add back renderbuffer */
- if (visual->glvisual.doubleBufferMode) {
- const int malloced = !backBuffer;
- if (malloced) {
- /* malloc a back buffer */
- backBuffer = malloc(size);
- if (!backBuffer) {
- _mesa_free_framebuffer_data(&buf->glframebuffer);
- free(buf);
- return NULL;
- }
- }
-
- backrb = new_glfbdev_renderbuffer(backBuffer, visual);
- if (!backrb) {
- /* out of mem */
- return NULL;
- }
- backrb->mallocedBuffer = malloced;
-
- _mesa_add_renderbuffer(&buf->glframebuffer, BUFFER_BACK_LEFT,
- &backrb->Base);
- }
- /* add software renderbuffers */
- _mesa_add_soft_renderbuffers(&buf->glframebuffer,
- GL_FALSE, /* color */
- visual->glvisual.haveDepthBuffer,
- visual->glvisual.haveStencilBuffer,
- visual->glvisual.haveAccumBuffer,
- GL_FALSE, /* alpha */
- GL_FALSE /* aux bufs */);
-
- buf->fix = *fixInfo; /* struct assignment */
- buf->var = *varInfo; /* struct assignment */
- buf->visual = visual; /* ptr assignment */
- buf->size = size;
- buf->bytesPerPixel = visual->var.bits_per_pixel / 8;
-
- return buf;
-}
-
-
-void
-glFBDevDestroyBuffer( GLFBDevBufferPtr buffer )
-{
- if (buffer) {
- /* check if destroying the current buffer */
- GLFBDevBufferPtr curDraw = glFBDevGetCurrentDrawBuffer();
- GLFBDevBufferPtr curRead = glFBDevGetCurrentReadBuffer();
- if (buffer == curDraw || buffer == curRead) {
- glFBDevMakeCurrent( NULL, NULL, NULL);
- }
- {
- struct gl_framebuffer *fb = &buffer->glframebuffer;
- _mesa_reference_framebuffer(&fb, NULL);
- }
- }
-}
-
-
-int
-glFBDevGetBufferAttrib( const GLFBDevBufferPtr buffer, int attrib)
-{
- (void) buffer;
- (void) attrib;
- return -1;
-}
-
-
-GLFBDevBufferPtr
-glFBDevGetCurrentDrawBuffer( void )
-{
- GLFBDevContextPtr fbdevctx = glFBDevGetCurrentContext();
- if (fbdevctx)
- return fbdevctx->drawBuffer;
- else
- return NULL;
-}
-
-
-GLFBDevBufferPtr
-glFBDevGetCurrentReadBuffer( void )
-{
- GLFBDevContextPtr fbdevctx = glFBDevGetCurrentContext();
- if (fbdevctx)
- return fbdevctx->readBuffer;
- else
- return NULL;
-}
-
-
-void
-glFBDevSwapBuffers( GLFBDevBufferPtr buffer )
-{
- GLFBDevContextPtr fbdevctx = glFBDevGetCurrentContext();
- struct GLFBDevRenderbufferRec *frontrb = (struct GLFBDevRenderbufferRec *)
- buffer->glframebuffer.Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
- struct GLFBDevRenderbufferRec *backrb = (struct GLFBDevRenderbufferRec *)
- buffer->glframebuffer.Attachment[BUFFER_BACK_LEFT].Renderbuffer;
-
- if (!buffer || !buffer->visual->glvisual.doubleBufferMode)
- return;
-
- /* check if swapping currently bound buffer */
- if (fbdevctx->drawBuffer == buffer) {
- /* flush pending rendering */
- _mesa_notifySwapBuffers(&fbdevctx->glcontext);
- }
-
- ASSERT(frontrb->Base.Data);
- ASSERT(backrb->Base.Data);
- memcpy(frontrb->Base.Data, backrb->Base.Data, buffer->size);
-}
-
-
-GLFBDevContextPtr
-glFBDevCreateContext( const GLFBDevVisualPtr visual, GLFBDevContextPtr share )
-{
- GLFBDevContextPtr ctx;
- struct gl_context *glctx;
- struct dd_function_table functions;
-
- ASSERT(visual);
-
- ctx = CALLOC_STRUCT(GLFBDevContextRec);
- if (!ctx)
- return NULL;
-
- /* build table of device driver functions */
- _mesa_init_driver_functions(&functions);
- functions.GetString = get_string;
- functions.UpdateState = update_state;
- functions.GetBufferSize = get_buffer_size;
- functions.Viewport = viewport;
-
- if (!_mesa_initialize_context(&ctx->glcontext, API_OPENGL, &visual->glvisual,
- share ? &share->glcontext : NULL,
- &functions, (void *) ctx)) {
- free(ctx);
- return NULL;
- }
-
- ctx->visual = visual;
-
- /* Create module contexts */
- glctx = (struct gl_context *) &ctx->glcontext;
- _swrast_CreateContext( glctx );
- _vbo_CreateContext( glctx );
- _tnl_CreateContext( glctx );
- _swsetup_CreateContext( glctx );
- _swsetup_Wakeup( glctx );
-
- /* use default TCL pipeline */
- {
- TNLcontext *tnl = TNL_CONTEXT(glctx);
- tnl->Driver.RunPipeline = _tnl_run_pipeline;
- }
-
- _mesa_enable_sw_extensions(glctx);
- _mesa_enable_1_3_extensions(glctx);
- _mesa_enable_1_4_extensions(glctx);
- _mesa_enable_1_5_extensions(glctx);
- _mesa_enable_2_0_extensions(glctx);
- _mesa_enable_2_1_extensions(glctx);
-
- return ctx;
-}
-
-
-void
-glFBDevDestroyContext( GLFBDevContextPtr context )
-{
- GLFBDevContextPtr fbdevctx = glFBDevGetCurrentContext();
-
- if (context) {
- struct gl_context *mesaCtx = &context->glcontext;
-
- _swsetup_DestroyContext( mesaCtx );
- _swrast_DestroyContext( mesaCtx );
- _tnl_DestroyContext( mesaCtx );
- _vbo_DestroyContext( mesaCtx );
-
- if (fbdevctx == context) {
- /* destroying current context */
- _mesa_make_current(NULL, NULL, NULL);
- }
- _mesa_free_context_data(&context->glcontext);
- free(context);
- }
-}
-
-
-int
-glFBDevGetContextAttrib( const GLFBDevContextPtr context, int attrib)
-{
- (void) context;
- (void) attrib;
- return -1;
-}
-
-
-GLFBDevContextPtr
-glFBDevGetCurrentContext( void )
-{
- GET_CURRENT_CONTEXT(ctx);
- return (GLFBDevContextPtr) ctx;
-}
-
-
-int
-glFBDevMakeCurrent( GLFBDevContextPtr context,
- GLFBDevBufferPtr drawBuffer,
- GLFBDevBufferPtr readBuffer )
-{
- if (context && drawBuffer && readBuffer) {
- /* Make sure the context's visual and the buffers' visuals match.
- * XXX we might do this by comparing specific fields like bits_per_pixel,
- * visual, etc. in the future.
- */
- if (context->visual != drawBuffer->visual ||
- context->visual != readBuffer->visual) {
- return 0;
- }
- _mesa_make_current( &context->glcontext,
- &drawBuffer->glframebuffer,
- &readBuffer->glframebuffer );
- context->drawBuffer = drawBuffer;
- context->readBuffer = readBuffer;
- context->curBuffer = drawBuffer;
- }
- else {
- /* unbind */
- _mesa_make_current( NULL, NULL, NULL );
- }
-
- return 1;
-}
-
-#endif /* USE_GLFBDEV_DRIVER */
projects / mesa.git / commitdiff