X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fdrivers%2Fallegro%2Famesa.c;h=c12d42148b61da707b953894f02eafde7fc27fc9;hb=3e0797f3b702a1363bf238eb4826385860346137;hp=cb46efa56aca715ba8d4e4bbe2556051420b7636;hpb=65a66f5bc37383c00423c21baf8ba9d6771e0259;p=mesa.git diff --git a/src/mesa/drivers/allegro/amesa.c b/src/mesa/drivers/allegro/amesa.c index cb46efa56ac..c12d42148b6 100644 --- a/src/mesa/drivers/allegro/amesa.c +++ b/src/mesa/drivers/allegro/amesa.c @@ -1,404 +1,414 @@ -/* - * Mesa 3-D graphics library - * Version: 3.0 - * Copyright (C) 1995-1998 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. - */ - -#include -#include -#include -#include "buffers.h" -#include "context.h" -#include "imports.h" -#include "matrix.h" +/* + * Mesa 3-D graphics library + * Version: 3.0 + * Copyright (C) 1995-1998 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. + */ + +#include +#include +#include +#include "buffers.h" +#include "context.h" +#include "imports.h" +#include "matrix.h" #include "mtypes.h" -#include "GL/amesa.h" - - -struct amesa_visual - { - GLvisual *GLVisual; /* inherit from GLvisual */ - GLboolean DBFlag; /* double buffered? */ - GLuint Depth; /* bits per pixel ( >= 15 ) */ - }; - - -struct amesa_buffer - { - GLframebuffer *GLBuffer; /* inherit from GLframebuffer */ - GLuint Width, Height; - BITMAP *Screen; - BITMAP *Background; - BITMAP *Active; - }; - - -struct amesa_context - { - GLcontext *GLContext; /* inherit from GLcontext */ - AMesaVisual Visual; - AMesaBuffer Buffer; - GLuint ClearColor; - GLuint CurrentColor; - }; - - -static void setup_dd_pointers(GLcontext *ctx); - - -/**********************************************************************/ -/***** drawing functions *****/ -/**********************************************************************/ - -#define FLIP(context, y) (context->Buffer->Height - (y) - 1) - -#include "allegro/generic.h" -#include "allegro/direct.h" - - -/**********************************************************************/ -/***** 15-bit accelerated drawing funcs *****/ -/**********************************************************************/ - -IMPLEMENT_WRITE_RGBA_SPAN(15, unsigned short) -IMPLEMENT_WRITE_RGB_SPAN(15, unsigned short) -IMPLEMENT_WRITE_MONO_RGBA_SPAN(15, unsigned short) -IMPLEMENT_READ_RGBA_SPAN(15, unsigned short) -IMPLEMENT_WRITE_RGBA_PIXELS(15, unsigned short) -IMPLEMENT_WRITE_MONO_RGBA_PIXELS(15, unsigned short) -IMPLEMENT_READ_RGBA_PIXELS(15, unsigned short) - - -/**********************************************************************/ -/***** 16-bit accelerated drawing funcs *****/ -/**********************************************************************/ - -IMPLEMENT_WRITE_RGBA_SPAN(16, unsigned short) -IMPLEMENT_WRITE_RGB_SPAN(16, unsigned short) -IMPLEMENT_WRITE_MONO_RGBA_SPAN(16, unsigned short) -IMPLEMENT_READ_RGBA_SPAN(16, unsigned short) -IMPLEMENT_WRITE_RGBA_PIXELS(16, unsigned short) -IMPLEMENT_WRITE_MONO_RGBA_PIXELS(16, unsigned short) -IMPLEMENT_READ_RGBA_PIXELS(16, unsigned short) - - -/**********************************************************************/ -/***** 32-bit accelerated drawing funcs *****/ -/**********************************************************************/ - -IMPLEMENT_WRITE_RGBA_SPAN(32, unsigned long) -IMPLEMENT_WRITE_RGB_SPAN(32, unsigned long) -IMPLEMENT_WRITE_MONO_RGBA_SPAN(32, unsigned long) -IMPLEMENT_READ_RGBA_SPAN(32, unsigned long) -IMPLEMENT_WRITE_RGBA_PIXELS(32, unsigned long) -IMPLEMENT_WRITE_MONO_RGBA_PIXELS(32, unsigned long) -IMPLEMENT_READ_RGBA_PIXELS(32, unsigned long) - - -/**********************************************************************/ -/***** Miscellaneous device driver funcs *****/ -/**********************************************************************/ - -static GLboolean set_buffer(GLcontext *ctx, GLframebuffer *buffer, GLuint bit) - { - AMesaContext context = (AMesaContext)(ctx->DriverCtx); - GLboolean ok = GL_TRUE; - - if (bit == DD_FRONT_LEFT_BIT) - context->Buffer->Active = context->Buffer->Screen; - - else if (bit == DD_BACK_LEFT) - { - if (context->Buffer->Background) - context->Buffer->Active = context->Buffer->Background; - else - ok = GL_FALSE; - } - - else - ok = GL_FALSE; - - return ok; - } - - -static void get_buffer_size(GLcontext *ctx, GLuint *width, GLuint *height) - { - AMesaContext context = (AMesaContext)(ctx->DriverCtx); - - *width = context->Buffer->Width; - *height = context->Buffer->Height; - } - - -static void viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h) -{ - /* poll for window size change and realloc software Z/stencil/etc if needed */ - _mesa_ResizeBuffersMESA(); -} - - -/**********************************************************************/ -/**********************************************************************/ - -static void setup_dd_pointers(GLcontext *ctx) - { - AMesaContext context = (AMesaContext)(ctx->DriverCtx); - - /* Initialize all the pointers in the driver struct. Do this whenever */ - /* a new context is made current or we change buffers via set_buffer! */ - - ctx->Driver.UpdateState = setup_dd_pointers; - ctx->Driver.SetBuffer = set_buffer; - ctx->Driver.GetBufferSize = get_buffer_size; - ctx->Driver.Viewport = viewport; - - ctx->Driver.Color = set_color_generic; - ctx->Driver.ClearColor = clear_color_generic; - ctx->Driver.Clear = clear_generic; - ctx->Driver.WriteRGBASpan = write_rgba_span_generic; - ctx->Driver.WriteRGBSpan = write_rgb_span_generic; - ctx->Driver.WriteMonoRGBASpan = write_mono_rgba_span_generic; - ctx->Driver.WriteRGBAPixels = write_rgba_pixels_generic; - ctx->Driver.WriteMonoRGBAPixels = write_mono_rgba_pixels_generic; - ctx->Driver.ReadRGBASpan = read_rgba_span_generic; - ctx->Driver.ReadRGBAPixels = read_rgba_pixels_generic; - - if (context->Buffer->Active != screen) - { - switch (context->Visual->Depth) - { - case 15: - ctx->Driver.WriteRGBASpan = write_rgba_span_15; - ctx->Driver.WriteRGBSpan = write_rgb_span_15; - ctx->Driver.WriteMonoRGBASpan = write_mono_rgba_span_15; - ctx->Driver.WriteRGBAPixels = write_rgba_pixels_15; - ctx->Driver.WriteMonoRGBAPixels = write_mono_rgba_pixels_15; - ctx->Driver.ReadRGBASpan = read_rgba_span_15; - ctx->Driver.ReadRGBAPixels = read_rgba_pixels_15; - break; - - case 16: - ctx->Driver.WriteRGBASpan = write_rgba_span_16; - ctx->Driver.WriteRGBSpan = write_rgb_span_16; - ctx->Driver.WriteMonoRGBASpan = write_mono_rgba_span_16; - ctx->Driver.WriteRGBAPixels = write_rgba_pixels_16; - ctx->Driver.WriteMonoRGBAPixels = write_mono_rgba_pixels_16; - ctx->Driver.ReadRGBASpan = read_rgba_span_16; - ctx->Driver.ReadRGBAPixels = read_rgba_pixels_16; - break; - - case 32: - ctx->Driver.WriteRGBASpan = write_rgba_span_32; - ctx->Driver.WriteRGBSpan = write_rgb_span_32; - ctx->Driver.WriteMonoRGBASpan = write_mono_rgba_span_32; - ctx->Driver.WriteRGBAPixels = write_rgba_pixels_32; - ctx->Driver.WriteMonoRGBAPixels = write_mono_rgba_pixels_32; - ctx->Driver.ReadRGBASpan = read_rgba_span_32; - ctx->Driver.ReadRGBAPixels = read_rgba_pixels_32; - break; - } - } - } - - -/**********************************************************************/ -/***** AMesa Public API Functions *****/ -/**********************************************************************/ - - -AMesaVisual AMesaCreateVisual(GLboolean dbFlag, GLint depth, - GLint depthSize, GLint stencilSize, GLint accumSize) - { - AMesaVisual visual; - GLbyte redBits, greenBits, blueBits; - - visual = (AMesaVisual)calloc(1, sizeof(struct amesa_visual)); - if (!visual) - return NULL; - - switch (depth) - { - case 15: - redBits = 5; - greenBits = 5; - blueBits = 5; - break; - - case 16: - redBits = 5; - greenBits = 6; - blueBits = 5; - break; - - case 24: case 32: - redBits = 8; - greenBits = 8; - blueBits = 8; - break; - - default: - free(visual); - return NULL; - } - - visual->DBFlag = dbFlag; - visual->Depth = depth; - visual->GLVisual = _mesa_create_visual(GL_TRUE, /* rgb mode */ - dbFlag, /* db_flag */ - GL_FALSE, /* stereo */ - redBits, greenBits, blueBits, 8, - 0, /* index bits */ - depthSize, /* depth bits */ - stencilSize,/* stencil bits */ - accumSize, /* accum bits */ - accumSize, /* accum bits */ - accumSize, /* accum bits */ - accumSize, /* accum bits */ - 1 ); - if (!visual->GLVisual) - { - free(visual); - return NULL; - } - - return visual; - } - - -void AMesaDestroyVisual(AMesaVisual visual) - { - _mesa_destroy_visual(visual->GLVisual); - free(visual); - } - - -AMesaBuffer AMesaCreateBuffer(AMesaVisual visual, - GLint width, GLint height) - { - AMesaBuffer buffer; - - buffer = (AMesaBuffer)calloc(1, sizeof(struct amesa_buffer)); - if (!buffer) - return NULL; - - buffer->Screen = NULL; - buffer->Background = NULL; - buffer->Active = NULL; - buffer->Width = width; - buffer->Height = height; - - if (visual->DBFlag) - { - buffer->Background = create_bitmap_ex(visual->Depth, width, height); - if (!buffer->Background) - { - free(buffer); - return NULL; - } - } - - buffer->GLBuffer = _mesa_create_framebuffer(visual->GLVisual); - if (!buffer->GLBuffer) - { - if (buffer->Background) destroy_bitmap(buffer->Background); - free(buffer); - return NULL; - } - - return buffer; - } - - -void AMesaDestroyBuffer(AMesaBuffer buffer) -{ - if (buffer->Screen) destroy_bitmap(buffer->Screen); - if (buffer->Background) destroy_bitmap(buffer->Background); - _mesa_destroy_framebuffer(buffer->GLBuffer); - free(buffer); -} - - -AMesaContext AMesaCreateContext(AMesaVisual visual, - AMesaContext share) -{ - AMesaContext context; - GLboolean direct = GL_FALSE; - - context = (AMesaContext)calloc(1, sizeof(struct amesa_context)); - if (!context) - return NULL; - - context->Visual = visual; - context->Buffer = NULL; - context->ClearColor = 0; - context->CurrentColor = 0; - context->GLContext = _mesa_create_context(visual->GLVisual, - share ? share->GLContext : NULL, - (void *) context, GL_FALSE ); - if (!context->GLContext) - { - free(context); - return NULL; - } - - return context; -} - - -void AMesaDestroyContext(AMesaContext context) -{ - _mesa_destroy_context(context->GLContext); - free(context); -} - - -GLboolean AMesaMakeCurrent(AMesaContext context, AMesaBuffer buffer) -{ - if (context && buffer) { - set_color_depth(context->Visual->Depth); - if (set_gfx_mode(GFX_AUTODETECT, buffer->Width, buffer->Height, 0, 0) != 0) - return GL_FALSE; - - context->Buffer = buffer; - buffer->Screen = screen; - buffer->Active = buffer->Background ? buffer->Background : screen; - - setup_dd_pointers(context->GLContext); - _mesa_make_current(context->GLContext, buffer->GLBuffer); - } - else { +#include "GL/amesa.h" + + +struct amesa_visual + { + GLvisual *GLVisual; /* inherit from GLvisual */ + GLboolean DBFlag; /* double buffered? */ + GLuint Depth; /* bits per pixel ( >= 15 ) */ + }; + + +struct amesa_buffer + { + GLframebuffer *GLBuffer; /* inherit from GLframebuffer */ + GLuint Width, Height; + BITMAP *Screen; + BITMAP *Background; + BITMAP *Active; + }; + + +struct amesa_context + { + GLcontext *GLContext; /* inherit from GLcontext */ + AMesaVisual Visual; + AMesaBuffer Buffer; + GLuint ClearColor; + GLuint CurrentColor; + }; + + +static void setup_dd_pointers(GLcontext *ctx); + + +/**********************************************************************/ +/***** drawing functions *****/ +/**********************************************************************/ + +#define FLIP(context, y) (context->Buffer->Height - (y) - 1) + +#include "allegro/generic.h" +#include "allegro/direct.h" + + +/**********************************************************************/ +/***** 15-bit accelerated drawing funcs *****/ +/**********************************************************************/ + +IMPLEMENT_WRITE_RGBA_SPAN(15, unsigned short) +IMPLEMENT_WRITE_RGB_SPAN(15, unsigned short) +IMPLEMENT_WRITE_MONO_RGBA_SPAN(15, unsigned short) +IMPLEMENT_READ_RGBA_SPAN(15, unsigned short) +IMPLEMENT_WRITE_RGBA_PIXELS(15, unsigned short) +IMPLEMENT_WRITE_MONO_RGBA_PIXELS(15, unsigned short) +IMPLEMENT_READ_RGBA_PIXELS(15, unsigned short) + + +/**********************************************************************/ +/***** 16-bit accelerated drawing funcs *****/ +/**********************************************************************/ + +IMPLEMENT_WRITE_RGBA_SPAN(16, unsigned short) +IMPLEMENT_WRITE_RGB_SPAN(16, unsigned short) +IMPLEMENT_WRITE_MONO_RGBA_SPAN(16, unsigned short) +IMPLEMENT_READ_RGBA_SPAN(16, unsigned short) +IMPLEMENT_WRITE_RGBA_PIXELS(16, unsigned short) +IMPLEMENT_WRITE_MONO_RGBA_PIXELS(16, unsigned short) +IMPLEMENT_READ_RGBA_PIXELS(16, unsigned short) + + +/**********************************************************************/ +/***** 32-bit accelerated drawing funcs *****/ +/**********************************************************************/ + +IMPLEMENT_WRITE_RGBA_SPAN(32, unsigned long) +IMPLEMENT_WRITE_RGB_SPAN(32, unsigned long) +IMPLEMENT_WRITE_MONO_RGBA_SPAN(32, unsigned long) +IMPLEMENT_READ_RGBA_SPAN(32, unsigned long) +IMPLEMENT_WRITE_RGBA_PIXELS(32, unsigned long) +IMPLEMENT_WRITE_MONO_RGBA_PIXELS(32, unsigned long) +IMPLEMENT_READ_RGBA_PIXELS(32, unsigned long) + + +/**********************************************************************/ +/***** Miscellaneous device driver funcs *****/ +/**********************************************************************/ + +static GLboolean set_buffer(GLcontext *ctx, GLframebuffer *buffer, GLuint bit) + { + AMesaContext context = (AMesaContext)(ctx->DriverCtx); + GLboolean ok = GL_TRUE; + + if (bit == DD_FRONT_LEFT_BIT) + context->Buffer->Active = context->Buffer->Screen; + + else if (bit == DD_BACK_LEFT) + { + if (context->Buffer->Background) + context->Buffer->Active = context->Buffer->Background; + else + ok = GL_FALSE; + } + + else + ok = GL_FALSE; + + return ok; + } + + +static void get_buffer_size(GLcontext *ctx, GLuint *width, GLuint *height) + { + AMesaContext context = (AMesaContext)(ctx->DriverCtx); + + *width = context->Buffer->Width; + *height = context->Buffer->Height; + } + + +/** + * 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) +{ + /* poll for window size change and realloc software Z/stencil/etc if needed */ + GLuint newWidth, newHeight; + GLframebuffer *buffer = ctx->WinSysDrawBuffer; + get_buffer_size( &newWidth, &newHeight ); + if (buffer->Width != newWidth || buffer->Height != newHeight) { + _mesa_resize_framebuffer(ctx, buffer, newWidth, newHeight ); + } + +} + + +/**********************************************************************/ +/**********************************************************************/ + +static void setup_dd_pointers(GLcontext *ctx) + { + AMesaContext context = (AMesaContext)(ctx->DriverCtx); + + /* Initialize all the pointers in the driver struct. Do this whenever */ + /* a new context is made current or we change buffers via set_buffer! */ + + ctx->Driver.UpdateState = setup_dd_pointers; + ctx->Driver.SetBuffer = set_buffer; + ctx->Driver.GetBufferSize = get_buffer_size; + ctx->Driver.Viewport = viewport; + + ctx->Driver.Color = set_color_generic; + ctx->Driver.ClearColor = clear_color_generic; + ctx->Driver.Clear = clear_generic; + ctx->Driver.WriteRGBASpan = write_rgba_span_generic; + ctx->Driver.WriteRGBSpan = write_rgb_span_generic; + ctx->Driver.WriteMonoRGBASpan = write_mono_rgba_span_generic; + ctx->Driver.WriteRGBAPixels = write_rgba_pixels_generic; + ctx->Driver.WriteMonoRGBAPixels = write_mono_rgba_pixels_generic; + ctx->Driver.ReadRGBASpan = read_rgba_span_generic; + ctx->Driver.ReadRGBAPixels = read_rgba_pixels_generic; + + if (context->Buffer->Active != screen) + { + switch (context->Visual->Depth) + { + case 15: + ctx->Driver.WriteRGBASpan = write_rgba_span_15; + ctx->Driver.WriteRGBSpan = write_rgb_span_15; + ctx->Driver.WriteMonoRGBASpan = write_mono_rgba_span_15; + ctx->Driver.WriteRGBAPixels = write_rgba_pixels_15; + ctx->Driver.WriteMonoRGBAPixels = write_mono_rgba_pixels_15; + ctx->Driver.ReadRGBASpan = read_rgba_span_15; + ctx->Driver.ReadRGBAPixels = read_rgba_pixels_15; + break; + + case 16: + ctx->Driver.WriteRGBASpan = write_rgba_span_16; + ctx->Driver.WriteRGBSpan = write_rgb_span_16; + ctx->Driver.WriteMonoRGBASpan = write_mono_rgba_span_16; + ctx->Driver.WriteRGBAPixels = write_rgba_pixels_16; + ctx->Driver.WriteMonoRGBAPixels = write_mono_rgba_pixels_16; + ctx->Driver.ReadRGBASpan = read_rgba_span_16; + ctx->Driver.ReadRGBAPixels = read_rgba_pixels_16; + break; + + case 32: + ctx->Driver.WriteRGBASpan = write_rgba_span_32; + ctx->Driver.WriteRGBSpan = write_rgb_span_32; + ctx->Driver.WriteMonoRGBASpan = write_mono_rgba_span_32; + ctx->Driver.WriteRGBAPixels = write_rgba_pixels_32; + ctx->Driver.WriteMonoRGBAPixels = write_mono_rgba_pixels_32; + ctx->Driver.ReadRGBASpan = read_rgba_span_32; + ctx->Driver.ReadRGBAPixels = read_rgba_pixels_32; + break; + } + } + } + + +/**********************************************************************/ +/***** AMesa Public API Functions *****/ +/**********************************************************************/ + + +AMesaVisual AMesaCreateVisual(GLboolean dbFlag, GLint depth, + GLint depthSize, GLint stencilSize, GLint accumSize) + { + AMesaVisual visual; + GLbyte redBits, greenBits, blueBits; + + visual = (AMesaVisual)calloc(1, sizeof(struct amesa_visual)); + if (!visual) + return NULL; + + switch (depth) + { + case 15: + redBits = 5; + greenBits = 5; + blueBits = 5; + break; + + case 16: + redBits = 5; + greenBits = 6; + blueBits = 5; + break; + + case 24: case 32: + redBits = 8; + greenBits = 8; + blueBits = 8; + break; + + default: + free(visual); + return NULL; + } + + visual->DBFlag = dbFlag; + visual->Depth = depth; + visual->GLVisual = _mesa_create_visual(GL_TRUE, /* rgb mode */ + dbFlag, /* db_flag */ + GL_FALSE, /* stereo */ + redBits, greenBits, blueBits, 8, + 0, /* index bits */ + depthSize, /* depth bits */ + stencilSize,/* stencil bits */ + accumSize, /* accum bits */ + accumSize, /* accum bits */ + accumSize, /* accum bits */ + accumSize, /* accum bits */ + 1 ); + if (!visual->GLVisual) + { + free(visual); + return NULL; + } + + return visual; + } + + +void AMesaDestroyVisual(AMesaVisual visual) + { + _mesa_destroy_visual(visual->GLVisual); + free(visual); + } + + +AMesaBuffer AMesaCreateBuffer(AMesaVisual visual, + GLint width, GLint height) + { + AMesaBuffer buffer; + + buffer = (AMesaBuffer)calloc(1, sizeof(struct amesa_buffer)); + if (!buffer) + return NULL; + + buffer->Screen = NULL; + buffer->Background = NULL; + buffer->Active = NULL; + buffer->Width = width; + buffer->Height = height; + + if (visual->DBFlag) + { + buffer->Background = create_bitmap_ex(visual->Depth, width, height); + if (!buffer->Background) + { + free(buffer); + return NULL; + } + } + + buffer->GLBuffer = _mesa_create_framebuffer(visual->GLVisual); + if (!buffer->GLBuffer) + { + if (buffer->Background) destroy_bitmap(buffer->Background); + free(buffer); + return NULL; + } + + return buffer; + } + + +void AMesaDestroyBuffer(AMesaBuffer buffer) +{ + if (buffer->Screen) destroy_bitmap(buffer->Screen); + if (buffer->Background) destroy_bitmap(buffer->Background); + _mesa_unreference_framebuffer(&buffer->GLBuffer); + free(buffer); +} + + +AMesaContext AMesaCreateContext(AMesaVisual visual, + AMesaContext share) +{ + AMesaContext context; + GLboolean direct = GL_FALSE; + + context = (AMesaContext)calloc(1, sizeof(struct amesa_context)); + if (!context) + return NULL; + + context->Visual = visual; + context->Buffer = NULL; + context->ClearColor = 0; + context->CurrentColor = 0; + context->GLContext = _mesa_create_context(visual->GLVisual, + share ? share->GLContext : NULL, + (void *) context, GL_FALSE ); + if (!context->GLContext) + { + free(context); + return NULL; + } + + return context; +} + + +void AMesaDestroyContext(AMesaContext context) +{ + _mesa_destroy_context(context->GLContext); + free(context); +} + + +GLboolean AMesaMakeCurrent(AMesaContext context, AMesaBuffer buffer) +{ + if (context && buffer) { + set_color_depth(context->Visual->Depth); + if (set_gfx_mode(GFX_AUTODETECT, buffer->Width, buffer->Height, 0, 0) != 0) + return GL_FALSE; + + context->Buffer = buffer; + buffer->Screen = screen; + buffer->Active = buffer->Background ? buffer->Background : screen; + + setup_dd_pointers(context->GLContext); + _mesa_make_current(context->GLContext, buffer->GLBuffer); + } + else { /* XXX I don't think you want to destroy anything here! */ - destroy_bitmap(context->Buffer->Screen); - context->Buffer->Screen = NULL; - context->Buffer->Active = NULL; - context->Buffer = NULL; - _mesa_make_current(NULL, NULL); - } - - return GL_TRUE; -} - - -void AMesaSwapBuffers(AMesaBuffer buffer) -{ - if (buffer->Background) { - blit(buffer->Background, buffer->Screen, - 0, 0, 0, 0, - buffer->Width, buffer->Height); - } -} + destroy_bitmap(context->Buffer->Screen); + context->Buffer->Screen = NULL; + context->Buffer->Active = NULL; + context->Buffer = NULL; + _mesa_make_current(NULL, NULL); + } + + return GL_TRUE; +} + + +void AMesaSwapBuffers(AMesaBuffer buffer) +{ + if (buffer->Background) { + blit(buffer->Background, buffer->Screen, + 0, 0, 0, 0, + buffer->Width, buffer->Height); + } +}