diff options
Diffstat (limited to 'src/mesa/drivers/svga/svgamesa.c')
| -rw-r--r-- | src/mesa/drivers/svga/svgamesa.c | 516 |
1 files changed, 0 insertions, 516 deletions
diff --git a/src/mesa/drivers/svga/svgamesa.c b/src/mesa/drivers/svga/svgamesa.c deleted file mode 100644 index 5afa8e188bb..00000000000 --- a/src/mesa/drivers/svga/svgamesa.c +++ /dev/null @@ -1,516 +0,0 @@ - -/* - * Mesa 3-D graphics library - * Version: 5.0 - * Copyright (C) 1995-2002 Brian Paul - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the Free - * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - - -/* - * SVGA driver for Mesa. - * Original author: Brian Paul - * Additional authors: Slawomir Szczyrba <[email protected]> (Mesa 3.2) - */ - - -#ifdef HAVE_CONFIG_H -#include "conf.h" -#endif - -#ifdef SVGA - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <vga.h> -#include "GL/svgamesa.h" -#include "main/buffers.h" -#include "main/context.h" -#include "main/extensions.h" -#include "main/imports.h" -#include "main/matrix.h" -#include "main/mtypes.h" -#include "swrast/swrast.h" -#include "svgapix.h" -#include "svgamesa8.h" -#include "svgamesa15.h" -#include "svgamesa16.h" -#include "svgamesa24.h" -#include "svgamesa32.h" - -struct svga_buffer SVGABuffer; -vga_modeinfo * SVGAInfo; -SVGAMesaContext SVGAMesa; /* the current context */ - -#ifdef SVGA_DEBUG - -#include <sys/types.h> -#include <signal.h> - -FILE * logfile; -char cbuf[1024]={0}; - -void SVGAlog(char * what) -{ - logfile=fopen("svgamesa.log","a"); - if (!logfile) return; - fprintf(logfile,"%s\n",what); - fclose(logfile); -} -#endif - -/**********************************************************************/ -/***** Init stuff... *****/ -/**********************************************************************/ - -int SVGAMesaInit( int GraphMode ) -{ - vga_init(); - if (!vga_hasmode(GraphMode)) - { - fprintf(stderr,"GraphMode %d unavailable...",GraphMode); -#ifdef SVGA_DEBUG - SVGAlog("SVGAMesaInit: invalid GraphMode (doesn't exist)"); -#endif - return(1); - } - SVGAInfo=vga_getmodeinfo(GraphMode); - if (SVGAInfo->flags & IS_MODEX) - { - fprintf(stderr,"ModeX not implemented..."); -#ifdef SVGA_DEBUG - SVGAlog("SVGAMesaInit: invalid GraphMode (ModeX)"); -#endif - return(2); - } - if (!SVGAInfo->bytesperpixel) - { - fprintf(stderr,"1 / 4 bit color not implemented..."); -#ifdef SVGA_DEBUG - SVGAlog("SVGAMesaInit: invalid GraphMode (1 or 4 bit)"); -#endif - return(3); - } - switch (SVGAInfo->colors) { - case 256: SVGABuffer.Depth = 8; break; - case 32768: SVGABuffer.Depth = 15; break; - case 65536: SVGABuffer.Depth = 16; break; - default: SVGABuffer.Depth = SVGAInfo->bytesperpixel<<3; break; - } - SVGABuffer.BufferSize=SVGAInfo->linewidth*SVGAInfo->height; -#ifdef SVGA_DEBUG - sprintf(cbuf,"SVGAMesaInit: double buffer info.\n" \ - " depth : %d\n" \ - " mode : %d\n" \ - " width : %d\n" \ - " height : %d\n" \ - " bufsize: %d\n", \ - SVGABuffer.Depth,GraphMode,SVGAInfo->linewidth, \ - SVGAInfo->height,SVGABuffer.BufferSize); - SVGAlog(cbuf); -#endif - SVGABuffer.FrontBuffer=(void*)malloc(SVGABuffer.BufferSize + 4); - if (!SVGABuffer.FrontBuffer) { - { - fprintf(stderr,"Not enough RAM for FRONT_LEFT_BUFFER..."); -#ifdef SVGA_DEBUG - SVGAlog("SVGAMesaInit: Not enough RAM (front buffer)"); -#endif - return(4); - } - } -#ifdef SVGA_DEBUG - sprintf(cbuf,"SVGAMesaInit: FrontBuffer - %p",SVGABuffer.FrontBuffer); - SVGAlog(cbuf); -#endif - SVGABuffer.BackBuffer=(void*)malloc(SVGABuffer.BufferSize + 4); - if (!SVGABuffer.BackBuffer) { - { - free(SVGABuffer.FrontBuffer); - fprintf(stderr,"Not enough RAM for BACK_LEFT_BUFFER..."); -#ifdef SVGA_DEBUG - SVGAlog("SVGAMesaInit: Not enough RAM (back buffer)"); -#endif - return(5); - } - } -#ifdef SVGA_DEBUG - sprintf(cbuf,"SVGAMesaInit: BackBuffer - %p",SVGABuffer.BackBuffer); - SVGAlog(cbuf); -#endif - - vga_setmode(GraphMode); - SVGABuffer.VideoRam=vga_getgraphmem(); -#ifdef SVGA_DEBUG - sprintf(cbuf,"SVGAMesaInit: VRAM - %p",SVGABuffer.VideoRam); - SVGAlog(cbuf); - sprintf(cbuf,"SVGAMesaInit: done. (Mode %d)",GraphMode); - SVGAlog(cbuf); -#endif - - SVGABuffer.DrawBuffer = SVGABuffer.BackBuffer; - SVGABuffer.ReadBuffer = SVGABuffer.BackBuffer; - - return 0; -} - -int SVGAMesaClose( void ) -{ - vga_setmode(TEXT); - free(SVGABuffer.FrontBuffer); - free(SVGABuffer.BackBuffer); - return 0; -} - -void SVGAMesaSetCI(int ndx, GLubyte red, GLubyte green, GLubyte blue) -{ - if (ndx<256) - vga_setpalette(ndx, red>>2, green>>2, blue>>2); -} - -/**********************************************************************/ -/***** Miscellaneous functions *****/ -/**********************************************************************/ - -static void copy_buffer( const GLubyte * buffer) { - int size = SVGABuffer.BufferSize, page = 0; - -#ifdef SVGA_DEBUG - sprintf(cbuf,"copy_buffer: copy %p to %p",buffer,SVGABuffer.VideoRam); - SVGAlog(cbuf); -#endif - - while(size>0) { - vga_setpage(page++); - if (size>>16) { - memcpy(SVGABuffer.VideoRam,buffer,0x10000); - buffer+=0x10000; - }else{ - memcpy(SVGABuffer.VideoRam,buffer,size & 0xffff); - } - size-=0xffff; - } -} - -static void get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) -{ - *width = SVGAMesa->width = vga_getxdim(); - *height = SVGAMesa->height = vga_getydim(); -} - -/** - * We only implement this function as a mechanism to check if the - * framebuffer size has changed (and update corresponding state). - */ -static void viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h) -{ - GLuint newWidth, newHeight; - GLframebuffer *buffer = ctx->WinSysDrawBuffer; - get_buffer_size( buffer, &newWidth, &newHeight ); - if (buffer->Width != newWidth || buffer->Height != newHeight) { - _mesa_resize_framebuffer(ctx, buffer, newWidth, newHeight ); - } -} - -static void set_buffer( GLcontext *ctx, GLframebuffer *colorBuffer, - GLenum buffer ) -{ - /* We can ignore colorBuffer since we don't support a MakeCurrentRead() - * function. - */ - (void) colorBuffer; - - if (buffer == GL_FRONT_LEFT) { - SVGABuffer.ReadBuffer = SVGABuffer.FrontBuffer; - SVGABuffer.DrawBuffer = SVGABuffer.FrontBuffer; -#if 0 - void * tmpptr; - /* vga_waitretrace(); */ - copy_buffer(SVGABuffer.FrontBuffer); - tmpptr=SVGABuffer.BackBuffer; - SVGABuffer.BackBuffer=SVGABuffer.FrontBuffer; - SVGABuffer.FrontBuffer=tmpptr; -#endif - } - else if (buffer == GL_BACK_LEFT) { - SVGABuffer.ReadBuffer = SVGABuffer.BackBuffer; - SVGABuffer.DrawBuffer = SVGABuffer.BackBuffer; -#if 0 - /* vga_waitretrace(); */ - copy_buffer(SVGABuffer.BackBuffer); -#endif - } -} - -/**********************************************************************/ -/***** *****/ -/**********************************************************************/ - -static void svgamesa_update_state( GLcontext *ctx, GLuint new_state ) -{ - struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference( ctx ); - - /* Initialize all the pointers in the DD struct. Do this whenever */ - /* a new context is made current or we change buffers via set_buffer! */ - - ctx->Driver.UpdateState = svgamesa_update_state; - - ctx->Driver.GetBufferSize = get_buffer_size; - ctx->Driver.Viewport = viewport; - - /* Fill in the swrast driver interface: - */ - swdd->SetBuffer = set_buffer; - - switch (SVGABuffer.Depth) { - case 8: ctx->Driver.ClearIndex = __clear_index8; - ctx->Driver.Clear = __clear8; - - swdd->ReadCI32Span = __read_ci32_span8; - swdd->ReadCI32Pixels = __read_ci32_pixels8; - swdd->WriteCI8Span = __write_ci8_span8; - swdd->WriteCI32Span = __write_ci32_span8; - swdd->WriteCI32Pixels = __write_ci32_pixels8; - swdd->WriteMonoCISpan = __write_mono_ci_span8; - swdd->WriteMonoCIPixels = __write_mono_ci_pixels8; -#ifdef SVGA_DEBUG - SVGAlog("SVGAUpdateState: 8 bit mode."); -#endif - - break; - case 15: ctx->Driver.ClearColor = __clear_color15; - ctx->Driver.Clear = __clear15; - - swdd->ReadRGBASpan = __read_rgba_span15; - swdd->ReadRGBAPixels = __read_rgba_pixels15; - swdd->WriteRGBASpan = __write_rgba_span15; - swdd->WriteRGBAPixels = __write_rgba_pixels15; - swdd->WriteMonoRGBASpan = __write_mono_rgba_span15; - swdd->WriteMonoRGBAPixels = __write_mono_rgba_pixels15; -#ifdef SVGA_DEBUG - SVGAlog("SVGAUpdateState: 15 bit mode."); -#endif - break; - case 16: ctx->Driver.ClearColor = __clear_color16; - ctx->Driver.Clear = __clear16; - - swdd->ReadRGBASpan = __read_rgba_span16; - swdd->ReadRGBAPixels = __read_rgba_pixels16; - swdd->WriteRGBASpan = __write_rgba_span16; - swdd->WriteRGBAPixels = __write_rgba_pixels16; - swdd->WriteMonoRGBASpan = __write_mono_rgba_span16; - swdd->WriteMonoRGBAPixels = __write_mono_rgba_pixels16; - break; -#ifdef SVGA_DEBUG - SVGAlog("SVGAUpdateState: 16 bit mode."); -#endif - case 24: ctx->Driver.ClearColor = __clear_color24; - ctx->Driver.Clear = __clear24; - - swdd->ReadRGBASpan = __read_rgba_span24; - swdd->ReadRGBAPixels = __read_rgba_pixels24; - swdd->WriteRGBASpan = __write_rgba_span24; - swdd->WriteRGBAPixels = __write_rgba_pixels24; - swdd->WriteMonoRGBASpan = __write_mono_rgba_span24; - swdd->WriteMonoRGBAPixels = __write_mono_rgba_pixels24; - break; -#ifdef SVGA_DEBUG - SVGAlog("SVGAUpdateState: 32 bit mode."); -#endif - case 32: ctx->Driver.ClearColor = __clear_color32; - ctx->Driver.Clear = __clear32; - - swdd->ReadRGBASpan = __read_rgba_span32; - swdd->ReadRGBAPixels = __read_rgba_pixels32; - swdd->WriteRGBASpan = __write_rgba_span32; - swdd->WriteRGBAPixels = __write_rgba_pixels32; - swdd->WriteMonoRGBASpan = __write_mono_rgba_span32; - swdd->WriteMonoRGBAPixels = __write_mono_rgba_pixels32; - } -} - -/* - * Create a new VGA/Mesa context and return a handle to it. - */ -SVGAMesaContext SVGAMesaCreateContext( GLboolean doubleBuffer ) -{ - SVGAMesaContext ctx; -#ifndef DEV - GLboolean rgb_flag; - GLfloat redscale, greenscale, bluescale, alphascale; - GLint index_bits; - GLint redbits, greenbits, bluebits, alphabits; - - /* determine if we're in RGB or color index mode */ - if ((SVGABuffer.Depth==32) || (SVGABuffer.Depth==24)) { - rgb_flag = GL_TRUE; - redscale = greenscale = bluescale = alphascale = 255.0; - redbits = greenbits = bluebits = 8; - alphabits = 0; - index_bits = 0; - } - else if (SVGABuffer.Depth==8) { - rgb_flag = GL_FALSE; - redscale = greenscale = bluescale = alphascale = 0.0; - redbits = greenbits = bluebits = alphabits = 0; - index_bits = 8; - } - else if (SVGABuffer.Depth==15) { - rgb_flag = GL_TRUE; - redscale = greenscale = bluescale = alphascale = 31.0; - redbits = greenbits = bluebits = 5; - alphabits = 0; - index_bits = 0; - } - else if (SVGABuffer.Depth==16) { - rgb_flag = GL_TRUE; - redscale = bluescale = alphascale = 31.0; - greenscale = 63.0; - redbits = bluebits = 5; - greenbits = 6; - alphabits = 0; - index_bits = 0; - } - - ctx = (SVGAMesaContext) calloc( 1, sizeof(struct svgamesa_context) ); - if (!ctx) { - return NULL; - } - - ctx->gl_vis = _mesa_create_visual( rgb_flag, - doubleBuffer, - GL_FALSE, /* stereo */ - redbits, greenbits, - bluebits, alphabits, - index_bits, - 16, /* depth_size */ - 8, /* stencil_size */ - 16, 16, 16, 16, /* accum_size */ - 1 /* samples */ - ); - - ctx->gl_ctx = _mesa_create_context( ctx->gl_vis, - NULL, /* share list context */ - (void *) ctx, GL_FALSE ); - - _mesa_enable_sw_extensions(ctx->gl_ctx); - _mesa_enable_1_3_extensions(ctx->gl_ctx); - - _mesa_init_driver_functions(&ctx->Driver); - - ctx->gl_buffer = _mesa_create_framebuffer( ctx->gl_vis, - ctx->gl_vis->depthBits > 0, - ctx->gl_vis->stencilBits > 0, - ctx->gl_vis->accumRedBits > 0, - ctx->gl_vis->alphaBits > 0 ); - - ctx->width = ctx->height = 0; /* temporary until first "make-current" */ -#endif - return ctx; -} - -/* - * Destroy the given VGA/Mesa context. - */ -void SVGAMesaDestroyContext( SVGAMesaContext ctx ) -{ -#ifndef DEV - if (ctx) { - _mesa_destroy_visual( ctx->gl_vis ); - _mesa_destroy_context( ctx->gl_ctx ); - free( ctx ); - if (ctx==SVGAMesa) { - SVGAMesa = NULL; - } - } -#endif -} - -/* - * Make the specified VGA/Mesa context the current one. - */ -void SVGAMesaMakeCurrent( SVGAMesaContext ctx ) -{ -#ifndef DEV - SVGAMesa = ctx; - svgamesa_update_state( ctx->gl_ctx, ~0 ); - _mesa_make_current( ctx->gl_ctx, ctx->gl_buffer ); - - if (ctx->width==0 || ctx->height==0) { - ctx->width = vga_getxdim(); - ctx->height = vga_getydim(); - } -#endif -} - -/* - * Return a handle to the current VGA/Mesa context. - */ -SVGAMesaContext SVGAMesaGetCurrentContext( void ) -{ - return SVGAMesa; -} - -/* - * Swap front/back buffers for current context if double buffered. - */ -void SVGAMesaSwapBuffers( void ) -{ -#if 000 - void * tmpptr; -#endif - - /* vga_waitretrace(); */ - copy_buffer(SVGABuffer.BackBuffer); - -#ifndef DEV - _mesa_notifySwapBuffers( SVGAMesa->gl_ctx ); - if (SVGAMesa->gl_vis->doubleBufferMode) -#endif /* DEV */ - { -#ifdef SVGA_DEBUG - sprintf(cbuf,"SVGAMesaSwapBuffers : Swapping..."); - SVGAlog(cbuf); -#endif /* SVGA_DEBUG */ -#if 000 - tmpptr=SVGABuffer.BackBuffer; - SVGABuffer.BackBuffer=SVGABuffer.FrontBuffer; - SVGABuffer.FrontBuffer=tmpptr; -#endif -#ifdef SVGA_DEBUG - sprintf(cbuf,"SVGAMesaSwapBuffers : WriteBuffer : %p\n" - " Readbuffer : %p", \ - SVGABuffer.BackBuffer, SVGABuffer.FrontBuffer ); - SVGAlog(cbuf); -#endif /* SVGA_DEBUG */ - } -} - -#else /*SVGA*/ - -/* - * Need this to provide at least one external definition when SVGA is - * not defined on the compiler command line. - */ -extern int gl_svga_dummy_function(void); -int gl_svga_dummy_function(void) -{ - return 0; -} - -#endif /*SVGA*/ - |