/* * Mesa 3-D graphics library * Version: 6.3 * * Copyright (C) 1999-2004 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. */ /* * DOS/DJGPP device driver v1.7 for Mesa * * Copyright (c) 2003 - Daniel Borca * Email : dborca@users.sourceforge.net * Web : http://www.geocities.com/dborca */ #include "glheader.h" #include "context.h" #include "imports.h" #ifndef FX #include "bufferobj.h" #include "extensions.h" #include "macros.h" #include "matrix.h" #include "mtypes.h" #include "texformat.h" #include "teximage.h" #include "texstore.h" #include "array_cache/acache.h" #include "swrast/s_context.h" #include "swrast/s_depth.h" #include "swrast/s_lines.h" #include "swrast/s_triangle.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" #include "video.h" #else /* FX */ #include "GL/fxmesa.h" #endif /* FX */ #include "GL/dmesa.h" #define SWTC 1 /* SW texture compression */ /* * In C++ terms, this class derives from the GLvisual class. * Add system-specific fields to it. */ struct dmesa_visual { GLvisual gl_visual; GLboolean sw_alpha; /* use Mesa's alpha buffer? */ int z_buffer; /* Z=buffer: 0=no, 1=SW, -1=HW */ }; /* * In C++ terms, this class derives from the GLframebuffer class. * Add system-specific fields to it. */ struct dmesa_buffer { GLframebuffer gl_buffer; /* The depth, stencil, accum, etc buffers */ void *the_window; /* your window handle, etc */ int xpos, ypos; /* position */ int width, height; /* size in pixels */ }; /* * In C++ terms, this class derives from the GLcontext class. * Add system-specific fields to it. */ struct dmesa_context { GLcontext gl_ctx; /* the core library context */ DMesaVisual visual; DMesaBuffer buffer; GLuint ClearColor; GLuint ClearIndex; /* etc... */ }; #ifndef FX /**************************************************************************** * Read/Write pixels ***************************************************************************/ #define FLIP(y) (dmesa->buffer->height - (y) - 1) #define FLIP2(y) (_b_ - (y)) #define DSTRIDE dmesa->buffer->width /**************************************************************************** * RGB[A] ***************************************************************************/ static void write_rgba_span (const GLcontext *ctx, GLuint n, GLint x, GLint y, const GLubyte rgba[][4], const GLubyte mask[]) { const DMesaContext dmesa = (DMesaContext)ctx; GLuint i, offset; offset = DSTRIDE * FLIP(y) + x; if (mask) { /* draw some pixels */ for (i=0; ibuffer->height - 1; if (mask) { /* draw some pixels */ for (i=0; ibuffer->height - 1, rgba = vl_mixrgba(color); if (mask) { /* draw some pixels */ for (i=0; ibuffer->height - 1; if (mask) { /* read some pixels */ for (i=0; ibuffer->height - 1; if (mask) { /* draw some pixels */ for (i=0; ibuffer->height - 1; if (mask) { /* draw some pixels */ for (i=0; ibuffer->height - 1; if (mask) { /* read some pixels */ for (i=0; ibuffer->height - 1; \ GLuint _w_ = dmesa->buffer->width; \ GLuint rgb = vl_mixrgb(v2->color); #define RENDER_SPAN(span) \ GLuint i, offset = FLIP2(span.y)*_w_ + span.x; \ for (i = 0; i < span.end; i++, offset++) { \ vl_putpixel(offset, rgb); \ } #include "swrast/s_tritemp.h" /* * Z-less flat triangle. */ #define NAME tri_rgb_flat_zless #define INTERP_Z 1 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE #define SETUP_CODE \ const DMesaContext dmesa = (DMesaContext)ctx; \ GLuint _b_ = dmesa->buffer->height - 1; \ GLuint _w_ = dmesa->buffer->width; \ GLuint rgb = vl_mixrgb(v2->color); #define RENDER_SPAN(span) \ GLuint i, offset = FLIP2(span.y)*_w_ + span.x; \ for (i = 0; i < span.end; i++, offset++) { \ const DEPTH_TYPE z = FixedToDepth(span.z); \ if (z < zRow[i]) { \ vl_putpixel(offset, rgb); \ zRow[i] = z; \ } \ span.z += span.zStep; \ } #include "swrast/s_tritemp.h" /* * NON-depth-buffered iterated triangle. */ #define NAME tri_rgb_iter #define INTERP_RGB 1 #define SETUP_CODE \ const DMesaContext dmesa = (DMesaContext)ctx; \ GLuint _b_ = dmesa->buffer->height - 1; \ GLuint _w_ = dmesa->buffer->width; #define RENDER_SPAN(span) \ GLuint i, offset = FLIP2(span.y)*_w_ + span.x; \ for (i = 0; i < span.end; i++, offset++) { \ vl_putpixel(offset, vl_mixfix(span.red, span.green, span.blue)); \ span.red += span.redStep; \ span.green += span.greenStep; \ span.blue += span.blueStep; \ } #include "swrast/s_tritemp.h" /* * Z-less iterated triangle. */ #define NAME tri_rgb_iter_zless #define INTERP_Z 1 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE #define INTERP_RGB 1 #define SETUP_CODE \ const DMesaContext dmesa = (DMesaContext)ctx; \ GLuint _b_ = dmesa->buffer->height - 1; \ GLuint _w_ = dmesa->buffer->width; #define RENDER_SPAN(span) \ GLuint i, offset = FLIP2(span.y)*_w_ + span.x; \ for (i = 0; i < span.end; i++, offset++) { \ const DEPTH_TYPE z = FixedToDepth(span.z); \ if (z < zRow[i]) { \ vl_putpixel(offset, vl_mixfix(span.red, span.green, span.blue));\ zRow[i] = z; \ } \ span.red += span.redStep; \ span.green += span.greenStep; \ span.blue += span.blueStep; \ span.z += span.zStep; \ } #include "swrast/s_tritemp.h" /* * Analyze context state to see if we can provide a fast triangle function * Otherwise, return NULL. */ static swrast_tri_func dmesa_choose_tri_function (GLcontext *ctx) { const SWcontext *swrast = SWRAST_CONTEXT(ctx); if ((ctx->RenderMode != GL_RENDER) || (ctx->Polygon.SmoothFlag) || (ctx->Polygon.StippleFlag) || (ctx->Texture._EnabledUnits) || (swrast->_RasterMask & MULTI_DRAW_BIT) || (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)) { return (swrast_tri_func)NULL; } if (swrast->_RasterMask==DEPTH_BIT && ctx->Depth.Func==GL_LESS && ctx->Depth.Mask==GL_TRUE && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) { return (ctx->Light.ShadeModel==GL_SMOOTH) ? tri_rgb_iter_zless : tri_rgb_flat_zless; } if (swrast->_RasterMask==0) { /* no depth test */ return (ctx->Light.ShadeModel==GL_SMOOTH) ? tri_rgb_iter : tri_rgb_flat; } return (swrast_tri_func)NULL; } /* Override for the swrast triangle-selection function. Try to use one * of our internal triangle functions, otherwise fall back to the * standard swrast functions. */ static void dmesa_choose_tri (GLcontext *ctx) { SWcontext *swrast = SWRAST_CONTEXT(ctx); if (!(swrast->Triangle=dmesa_choose_tri_function(ctx))) _swrast_choose_triangle(ctx); } /**************************************************************************** * Optimized line rendering ***************************************************************************/ /* * NON-depth-buffered flat line. */ #define NAME line_rgb_flat #define INTERP_XY 1 #define CLIP_HACK 1 #define SETUP_CODE \ const DMesaContext dmesa = (DMesaContext)ctx; \ GLuint _b_ = dmesa->buffer->height - 1; \ GLuint _w_ = dmesa->buffer->width; \ GLuint rgb = vl_mixrgb(vert1->color); #define PLOT(X,Y) vl_putpixel(FLIP2(Y) * _w_ + X, rgb); #include "swrast/s_linetemp.h" /* * Z-less flat line. */ #define NAME line_rgb_flat_zless #define INTERP_XY 1 #define INTERP_Z 1 #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE #define CLIP_HACK 1 #define SETUP_CODE \ const DMesaContext dmesa = (DMesaContext)ctx; \ GLuint _b_ = dmesa->buffer->height - 1; \ GLuint _w_ = dmesa->buffer->width; \ GLuint rgb = vl_mixrgb(vert1->color); #define PLOT(X,Y) \ if (Z < *zPtr) { \ *zPtr = Z; \ vl_putpixel(FLIP2(Y) * _w_ + X, rgb); \ } #include "swrast/s_linetemp.h" /* * NON-depth-buffered iterated line. */ #define line_rgb_iter NULL /* * Z-less iterated line. */ #define line_rgb_iter_zless NULL /* * Analyze context state to see if we can provide a fast line function * Otherwise, return NULL. */ static swrast_line_func dmesa_choose_line_function (GLcontext *ctx) { const SWcontext *swrast = SWRAST_CONTEXT(ctx); if ((ctx->RenderMode != GL_RENDER) || (ctx->Line.SmoothFlag) || (ctx->Texture._EnabledUnits) || (ctx->Line.StippleFlag) || (swrast->_RasterMask & MULTI_DRAW_BIT) || (ctx->Line.Width!=1.0F)) { return (swrast_line_func)NULL; } if (swrast->_RasterMask==DEPTH_BIT && ctx->Depth.Func==GL_LESS && ctx->Depth.Mask==GL_TRUE && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) { return (ctx->Light.ShadeModel==GL_SMOOTH) ? line_rgb_iter_zless : line_rgb_flat_zless; } if (swrast->_RasterMask==0) { /* no depth test */ return (ctx->Light.ShadeModel==GL_SMOOTH) ? line_rgb_iter : line_rgb_flat; } return (swrast_line_func)NULL; } /* Override for the swrast line-selection function. Try to use one * of our internal line functions, otherwise fall back to the * standard swrast functions. */ static void dmesa_choose_line (GLcontext *ctx) { SWcontext *swrast = SWRAST_CONTEXT(ctx); if (!(swrast->Line=dmesa_choose_line_function(ctx))) _swrast_choose_line(ctx); } /**************************************************************************** * Miscellaneous device driver funcs ***************************************************************************/ static const struct gl_texture_format * choose_tex_format( GLcontext *ctx, GLint internalFormat, GLenum format, GLenum type ) { switch (internalFormat) { case GL_COMPRESSED_RGB_ARB: return &_mesa_texformat_rgb; case GL_COMPRESSED_RGBA_ARB: return &_mesa_texformat_rgba; default: return _mesa_choose_tex_format(ctx, internalFormat, format, type); } } static void clear_index (GLcontext *ctx, GLuint index) { ((DMesaContext)ctx)->ClearIndex = index; } static void clear_color (GLcontext *ctx, const GLfloat color[4]) { GLubyte col[4]; CLAMPED_FLOAT_TO_UBYTE(col[0], color[0]); CLAMPED_FLOAT_TO_UBYTE(col[1], color[1]); CLAMPED_FLOAT_TO_UBYTE(col[2], color[2]); CLAMPED_FLOAT_TO_UBYTE(col[3], color[3]); ((DMesaContext)ctx)->ClearColor = vl_mixrgba(col); } static void clear (GLcontext *ctx, GLbitfield mask, GLboolean all, GLint x, GLint y, GLint width, GLint height) { const DMesaContext c = (DMesaContext)ctx; const GLuint *colorMask = (GLuint *)&ctx->Color.ColorMask; /* * Clear the specified region of the buffers indicated by 'mask' * using the clear color or index as specified by one of the two * functions above. * If all==GL_TRUE, clear whole buffer, else just clear region defined * by x,y,width,height */ /* we can't handle color or index masking */ if ((*colorMask == 0xffffffff) && (ctx->Color.IndexMask == 0xffffffff)) { if (mask & DD_BACK_LEFT_BIT) { int color = ((GLvisual *)(c->visual))->rgbMode ? c->ClearColor : c->ClearIndex; if (all) { vl_clear(color); } else { vl_rect(x, c->buffer->height - y - height, width, height, color); } mask &= ~DD_BACK_LEFT_BIT; } } if (mask) { _swrast_Clear(ctx, mask, all, x, y, width, height); } } /* * This function is called to specify which buffer to read and write * for software rasterization (swrast) fallbacks. This doesn't necessarily * correspond to glDrawBuffer() or glReadBuffer() calls. */ static void set_buffer (GLcontext *ctx, GLframebuffer *colorBuffer, GLuint bufferBit) { /* * XXX todo - examine bufferBit and set read/write pointers */ /* Normally, we would have * ctx->Driver.ReadBuffer == set_read_buffer * ctx->Driver.DrawBuffer == set_draw_buffer * and make sure set_draw_buffer calls _swrast_DrawBuffer, * which in turn will call this routine via dd->SetBuffer. */ } /* * Return the width and height of the current buffer. * If anything special has to been done when the buffer/window is * resized, do it now. */ static void get_buffer_size (GLframebuffer *buffer, GLuint *width, GLuint *height) { DMesaBuffer b = (DMesaBuffer)buffer; *width = b->width; *height = b->height; } static const GLubyte* get_string (GLcontext *ctx, GLenum name) { switch (name) { case GL_RENDERER: return (const GLubyte *)"Mesa DJGPP"; default: return NULL; } } static void finish (GLcontext *ctx) { /* * XXX todo - OPTIONAL FUNCTION: implements glFinish if possible */ } static void flush (GLcontext *ctx) { /* * XXX todo - OPTIONAL FUNCTION: implements glFlush if possible */ } /**************************************************************************** * State ***************************************************************************/ #define DMESA_NEW_LINE (_NEW_LINE | \ _NEW_TEXTURE | \ _NEW_LIGHT | \ _NEW_DEPTH | \ _NEW_RENDERMODE | \ _SWRAST_NEW_RASTERMASK) #define DMESA_NEW_TRIANGLE (_NEW_POLYGON | \ _NEW_TEXTURE | \ _NEW_LIGHT | \ _NEW_DEPTH | \ _NEW_RENDERMODE | \ _SWRAST_NEW_RASTERMASK) /* Extend the software rasterizer with our line and triangle * functions. */ static void dmesa_register_swrast_functions (GLcontext *ctx) { SWcontext *swrast = SWRAST_CONTEXT(ctx); swrast->choose_line = dmesa_choose_line; swrast->choose_triangle = dmesa_choose_tri; swrast->invalidate_line |= DMESA_NEW_LINE; swrast->invalidate_triangle |= DMESA_NEW_TRIANGLE; } static void dmesa_update_state (GLcontext *ctx, GLuint new_state) { /* Propagate statechange information to swrast and swrast_setup * modules. The DMesa driver has no internal GL-dependent state. */ _swrast_InvalidateState( ctx, new_state ); _ac_InvalidateState( ctx, new_state ); _tnl_InvalidateState( ctx, new_state ); _swsetup_InvalidateState( ctx, new_state ); } /* Initialize the device driver function table with the functions * we implement in this driver. */ static void dmesa_init_driver_functions (DMesaVisual visual, struct dd_function_table *driver) { driver->UpdateState = dmesa_update_state; driver->GetString = get_string; driver->GetBufferSize = get_buffer_size; driver->Flush = flush; driver->Finish = finish; driver->Clear = clear; driver->ClearColor = clear_color; driver->ClearIndex = clear_index; #if SWTC driver->ChooseTextureFormat = choose_tex_format; #endif } /* Setup pointers and other driver state that is constant for the life * of a context. */ static void dmesa_init_pointers (GLcontext *ctx) { struct swrast_device_driver *dd = _swrast_GetDeviceDriverReference(ctx); dd->SetBuffer = set_buffer; /* The span functions should be in `dmesa_update_state', but I'm * pretty sure they will never change during the life of the Visual */ /* Index span/pixel functions */ dd->WriteCI32Span = write_index_span; dd->WriteCI8Span = write_index8_span; dd->WriteMonoCISpan = write_mono_index_span; dd->WriteCI32Pixels = write_index_pixels; dd->WriteMonoCIPixels = write_mono_index_pixels; dd->ReadCI32Span = read_index_span; dd->ReadCI32Pixels = read_index_pixels; /* RGB(A) span/pixel functions */ dd->WriteRGBASpan = write_rgba_span; dd->WriteRGBSpan = write_rgb_span; dd->WriteMonoRGBASpan = write_mono_rgba_span; dd->WriteRGBAPixels = write_rgba_pixels; dd->WriteMonoRGBAPixels = write_mono_rgba_pixels; dd->ReadRGBASpan = read_rgba_span; dd->ReadRGBAPixels = read_rgba_pixels; } #endif /* FX */ /**************************************************************************** * DMesa Public API Functions ***************************************************************************/ /* * The exact arguments to this function will depend on your window system */ DMesaVisual DMesaCreateVisual (GLint width, GLint height, GLint colDepth, GLint refresh, GLboolean dbFlag, GLboolean rgbFlag, GLint alphaSize, GLint depthSize, GLint stencilSize, GLint accumSize) { DMesaVisual v; GLint redBits, greenBits, blueBits, alphaBits, indexBits; GLboolean sw_alpha; alphaBits = 0; if (!rgbFlag) { indexBits = 8; redBits = 0; greenBits = 0; blueBits = 0; } else { indexBits = 0; switch (colDepth) { case 8: redBits = 8; greenBits = 8; blueBits = 8; break; case 15: alphaBits = 1; redBits = 5; greenBits = 5; blueBits = 5; break; case 16: redBits = 5; greenBits = 6; blueBits = 5; break; case 32: alphaBits = 8; case 24: redBits = 8; greenBits = 8; blueBits = 8; break; default: return NULL; } } /* Okay, * `alphaBits' is what we can provide * `alphaSize' is what app requests * * Note that alpha buffering is required only if destination alpha is used * in alpha blending; alpha blending modes that do not use destination alpha * can be used w/o alpha buffer. * * We will use whatever ALPHA app requests. Later, in `CreateBuffer' we'll * instruct Mesa to use its own ALPHA buffer, by passing a non-FALSE value * for ALPHA to `_mesa_initialize_framebuffer'. * * Basically, 32bit modes provide ALPHA storage, but can we rely on this? */ alphaBits = alphaSize; sw_alpha = (alphaBits > 0); #ifndef FX if (!dbFlag) { return NULL; } if ((colDepth=vl_video_init(width, height, colDepth, rgbFlag, refresh)) <= 0) { return NULL; } #else /* FX */ if (!rgbFlag) { return NULL; } else { char *env; if ((env = getenv("MESA_FX_INFO")) && (env[0] == 'r')) { freopen("MESA.LOG", "w", stderr); } if (refresh && (((env = getenv("FX_GLIDE_REFRESH")) == NULL) || !atoi(env))) { /* if we are passed non-zero value for refresh, we need to override * default refresh rate. However, if FX_GLIDE_REFRESH is already set * to 0, we won't override it, because it has a special meaning for * DJGPP Glide3x (switch via VESA, using BIOS default refresh). */ char tmp[32]; sprintf(tmp, "FX_GLIDE_REFRESH=%u", refresh); putenv(tmp); } } #endif /* FX */ if ((v=(DMesaVisual)CALLOC_STRUCT(dmesa_visual)) != NULL) { /* Create core visual */ _mesa_initialize_visual((GLvisual *)v, rgbFlag, /* rgb */ dbFlag, GL_FALSE, /* stereo */ redBits, greenBits, blueBits, alphaBits, indexBits, /* indexBits */ depthSize, stencilSize, accumSize, /* accumRed */ accumSize, /* accumGreen */ accumSize, /* accumBlue */ alphaBits?accumSize:0, /* accumAlpha */ 1); /* numSamples */ #ifndef FX v->sw_alpha = sw_alpha; v->z_buffer = (depthSize > 0) ? 1 : 0; #endif } return v; } void DMesaDestroyVisual (DMesaVisual v) { #ifndef FX vl_video_exit(); #endif _mesa_destroy_visual((GLvisual *)v); } DMesaBuffer DMesaCreateBuffer (DMesaVisual visual, GLint xpos, GLint ypos, GLint width, GLint height) { #ifndef FX DMesaBuffer b; if ((b=(DMesaBuffer)CALLOC_STRUCT(dmesa_buffer)) != NULL) { _mesa_initialize_framebuffer((GLframebuffer *)b, (GLvisual *)visual, visual->z_buffer == 1, ((GLvisual *)visual)->stencilBits > 0, ((GLvisual *)visual)->accumRedBits > 0, visual->sw_alpha); b->xpos = xpos; b->ypos = ypos; b->width = width; b->height = height; } return b; #else /* FX */ GLvisual *v = (GLvisual *)visual; int i = 0, fx_attrib[32]; if (v->doubleBufferMode) fx_attrib[i++] = FXMESA_DOUBLEBUFFER; if (v->depthBits > 0) { fx_attrib[i++] = FXMESA_DEPTH_SIZE; fx_attrib[i++] = v->depthBits; } if (v->stencilBits > 0) { fx_attrib[i++] = FXMESA_STENCIL_SIZE; fx_attrib[i++] = v->stencilBits; } if (v->accumRedBits > 0) { fx_attrib[i++] = FXMESA_ACCUM_SIZE; fx_attrib[i++] = v->accumRedBits; } if (v->alphaBits) { fx_attrib[i++] = FXMESA_ALPHA_SIZE; fx_attrib[i++] = v->alphaBits; } fx_attrib[i++] = FXMESA_COLORDEPTH; fx_attrib[i++] = v->redBits + v->greenBits + v->blueBits; fx_attrib[i] = FXMESA_NONE; return (DMesaBuffer)fxMesaCreateBestContext(-1, width, height, fx_attrib); #endif /* FX */ } void DMesaDestroyBuffer (DMesaBuffer b) { #ifndef FX if (b->the_window != NULL) { free(b->the_window); } _mesa_destroy_framebuffer((GLframebuffer *)b); #else fxMesaDestroyContext((fxMesaContext)b); #endif } DMesaContext DMesaCreateContext (DMesaVisual visual, DMesaContext share) { GLcontext *c; #ifndef FX TNLcontext *tnl; struct dd_function_table functions; if ((c=(GLcontext *)CALLOC_STRUCT(dmesa_context)) != NULL) { /* Initialize device driver function table */ _mesa_init_driver_functions(&functions); /* override with our functions */ dmesa_init_driver_functions(visual, &functions); _mesa_initialize_context(c, (GLvisual *)visual, (GLcontext *)share, &functions, (void *)c); _mesa_enable_sw_extensions(c); _mesa_enable_1_3_extensions(c); _mesa_enable_1_4_extensions(c); _mesa_enable_1_5_extensions(c); _mesa_enable_2_0_extensions(c); #if SWTC if (c->Mesa_DXTn) { _mesa_enable_extension(c, "GL_EXT_texture_compression_s3tc"); _mesa_enable_extension(c, "GL_S3_s3tc"); } _mesa_enable_extension(c, "GL_3DFX_texture_compression_FXT1"); #endif /* you probably have to do a bunch of other initializations here. */ ((DMesaContext)c)->visual = visual; /* Initialize the software rasterizer and helper modules. */ _swrast_CreateContext(c); _ac_CreateContext(c); _tnl_CreateContext(c); _swsetup_CreateContext(c); /* tnl setup */ tnl = TNL_CONTEXT(c); tnl->Driver.RunPipeline = _tnl_run_pipeline; /* swrast setup */ if (((GLvisual *)visual)->rgbMode) dmesa_register_swrast_functions(c); dmesa_init_pointers(c); _swsetup_Wakeup(c); } #else /* FX */ c = (GLcontext *)0xdeadbeef; #endif /* FX */ return (DMesaContext)c; } void DMesaDestroyContext (DMesaContext c) { #ifndef FX if (c) { _swsetup_DestroyContext((GLcontext *)c); _swrast_DestroyContext((GLcontext *)c); _tnl_DestroyContext((GLcontext *)c); _ac_DestroyContext((GLcontext *)c); _mesa_destroy_context((GLcontext *)c); } #endif } GLboolean DMesaMoveBuffer (GLint xpos, GLint ypos) { #ifndef FX GET_CURRENT_CONTEXT(ctx); DMesaBuffer b = ((DMesaContext)ctx)->buffer; if (vl_sync_buffer(&b->the_window, xpos, ypos, b->width, b->height) == 0) { b->xpos = xpos; b->ypos = ypos; return GL_TRUE; } #endif return GL_FALSE; } GLboolean DMesaResizeBuffer (GLint width, GLint height) { #ifndef FX GET_CURRENT_CONTEXT(ctx); DMesaBuffer b = ((DMesaContext)ctx)->buffer; if (vl_sync_buffer(&b->the_window, b->xpos, b->ypos, width, height) == 0) { b->width = width; b->height = height; return GL_TRUE; } #endif return GL_FALSE; } /* * Make the specified context and buffer the current one. */ GLboolean DMesaMakeCurrent (DMesaContext c, DMesaBuffer b) { #ifndef FX if ((c != NULL) && (b != NULL)) { if (vl_sync_buffer(&b->the_window, b->xpos, b->ypos, b->width, b->height) != 0) { return GL_FALSE; } c->buffer = b; _mesa_make_current((GLcontext *)c, (GLframebuffer *)b); if (((GLcontext *)c)->Viewport.Width == 0) { /* initialize viewport to window size */ _mesa_Viewport(0, 0, b->width, b->height); } } else { /* Detach */ _mesa_make_current(NULL, NULL); } #else fxMesaMakeCurrent((fxMesaContext)b); #endif return GL_TRUE; } void DMesaSwapBuffers (DMesaBuffer b) { /* copy/swap back buffer to front if applicable */ #ifndef FX GET_CURRENT_CONTEXT(ctx); _mesa_notifySwapBuffers(ctx); vl_flip(); #else fxMesaSwapBuffers(); #endif } void DMesaSetCI (int ndx, GLfloat red, GLfloat green, GLfloat blue) { #ifndef FX vl_setCI(ndx, red, green, blue); #endif } DMesaContext DMesaGetCurrentContext (void) { GET_CURRENT_CONTEXT(ctx); #ifndef FX #else if (ctx != NULL) { ctx = (GLcontext *)0xdeadbeef; } #endif return (DMesaContext)ctx; } DMesaBuffer DMesaGetCurrentBuffer (void) { const DMesaContext dmesa = DMesaGetCurrentContext(); if (dmesa == NULL) { return NULL; } #ifndef FX return dmesa->buffer; #else return (DMesaBuffer)fxMesaGetCurrentContext(); #endif } void *DMesaGetProcAddress (const char *name) { void *p = (void *)_glapi_get_proc_address(name); /* TODO: handle DMesa* namespace if (p == NULL) { } */ return p; } int DMesaGetIntegerv (GLenum pname, GLint *params) { switch (pname) { case DMESA_GET_SCREEN_SIZE: #ifndef FX vl_get(VL_GET_SCREEN_SIZE, params); #else fxGetScreenGeometry(¶ms[0], ¶ms[1]); #endif break; case DMESA_GET_DRIVER_CAPS: #ifndef FX params[0] = DMESA_DRIVER_SWDB_BIT; #else params[0] = DMESA_DRIVER_LLWO_BIT; #endif break; case DMESA_GET_VIDEO_MODES: #ifndef FX return vl_get(VL_GET_VIDEO_MODES, params); #else return -1; /* TODO */ #endif case DMESA_GET_BUFFER_ADDR: #ifndef FX { DMesaContext c = (DMesaContext)DMesaGetCurrentContext(); if (c != NULL) { DMesaBuffer b = c->buffer; if (b != NULL) { params[0] = (GLint)b->the_window; } } } #else return -1; #endif break; default: return -1; } return 0; } #if (((__DJGPP__ << 8) | __DJGPP_MINOR__) >= 0x204) && USE_EXTERNAL_DXTN_LIB #include extern_asm(___dj_assert); extern_asm(_free); extern_asm(_malloc); extern_asm(_memset); DXE_EXPORT_TABLE_AUTO (___dxe_eta___dxtn) DXE_EXPORT_ASM (___dj_assert) DXE_EXPORT_ASM (_free) DXE_EXPORT_ASM (_malloc) DXE_EXPORT_ASM (_memset) DXE_EXPORT_END #endif