/* * Create a new X/Mesa visual. * Input: display - X11 display * visinfo - an XVisualInfo pointer * rgb_flag - GL_TRUE = RGB mode, * GL_FALSE = color index mode * alpha_flag - alpha buffer requested? * db_flag - GL_TRUE = double-buffered, * GL_FALSE = single buffered * stereo_flag - stereo visual? * ximage_flag - GL_TRUE = use an XImage for back buffer, * GL_FALSE = use an off-screen pixmap for back buffer * depth_size - requested bits/depth values, or zero * stencil_size - requested bits/stencil values, or zero * accum_red_size - requested bits/red accum values, or zero * accum_green_size - requested bits/green accum values, or zero * accum_blue_size - requested bits/blue accum values, or zero * accum_alpha_size - requested bits/alpha accum values, or zero * num_samples - number of samples/pixel if multisampling, or zero * level - visual level, usually 0 * visualCaveat - ala the GLX extension, usually GLX_NONE * Return; a new XMesaVisual or 0 if error. */ PUBLIC XMesaVisual XMesaCreateVisual( Display *display, XVisualInfo * visinfo, GLboolean rgb_flag, GLboolean alpha_flag, GLboolean db_flag, GLboolean stereo_flag, GLboolean ximage_flag, GLint depth_size, GLint stencil_size, GLint accum_red_size, GLint accum_green_size, GLint accum_blue_size, GLint accum_alpha_size, GLint num_samples, GLint level, GLint visualCaveat ) { XMesaDisplay xmdpy = xmesa_init_display(display); XMesaVisual v; GLint red_bits, green_bits, blue_bits, alpha_bits; if (!xmdpy) return NULL; /* For debugging only */ if (_mesa_getenv("MESA_XSYNC")) { /* This makes debugging X easier. * In your debugger, set a breakpoint on _XError to stop when an * X protocol error is generated. */ XSynchronize( display, 1 ); } v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual); if (!v) { return NULL; } v->display = display; /* Save a copy of the XVisualInfo struct because the user may Xfree() * the struct but we may need some of the information contained in it * at a later time. */ v->visinfo = (XVisualInfo *) malloc(sizeof(*visinfo)); if (!v->visinfo) { free(v); return NULL; } memcpy(v->visinfo, visinfo, sizeof(*visinfo)); v->ximage_flag = ximage_flag; v->mesa_visual.redMask = visinfo->red_mask; v->mesa_visual.greenMask = visinfo->green_mask; v->mesa_visual.blueMask = visinfo->blue_mask; v->visualID = visinfo->visualid; v->screen = visinfo->screen; #if !(defined(__cplusplus) || defined(c_plusplus)) v->visualType = xmesa_convert_from_x_visual_type(visinfo->class); #else v->visualType = xmesa_convert_from_x_visual_type(visinfo->c_class); #endif v->mesa_visual.visualRating = visualCaveat; if (alpha_flag) v->mesa_visual.alphaBits = 8; (void) initialize_visual_and_buffer( v, NULL, rgb_flag, 0, 0 ); { const int xclass = v->visualType; if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { red_bits = _mesa_bitcount(GET_REDMASK(v)); green_bits = _mesa_bitcount(GET_GREENMASK(v)); blue_bits = _mesa_bitcount(GET_BLUEMASK(v)); } else { /* this is an approximation */ int depth; depth = v->visinfo->depth; red_bits = depth / 3; depth -= red_bits; green_bits = depth / 2; depth -= green_bits; blue_bits = depth; alpha_bits = 0; assert( red_bits + green_bits + blue_bits == v->visinfo->depth ); } alpha_bits = v->mesa_visual.alphaBits; } /* initialize visual */ { struct gl_config *vis = &v->mesa_visual; vis->rgbMode = GL_TRUE; vis->doubleBufferMode = db_flag; vis->stereoMode = stereo_flag; vis->redBits = red_bits; vis->greenBits = green_bits; vis->blueBits = blue_bits; vis->alphaBits = alpha_bits; vis->rgbBits = red_bits + green_bits + blue_bits; vis->indexBits = 0; vis->depthBits = depth_size; vis->stencilBits = stencil_size; vis->accumRedBits = accum_red_size; vis->accumGreenBits = accum_green_size; vis->accumBlueBits = accum_blue_size; vis->accumAlphaBits = accum_alpha_size; vis->haveAccumBuffer = accum_red_size > 0; vis->haveDepthBuffer = depth_size > 0; vis->haveStencilBuffer = stencil_size > 0; vis->numAuxBuffers = 0; vis->level = 0; vis->sampleBuffers = 0; vis->samples = 0; } v->stvis.buffer_mask = ST_ATTACHMENT_FRONT_LEFT_MASK; if (db_flag) v->stvis.buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK; if (stereo_flag) { v->stvis.buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK; if (db_flag) v->stvis.buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK; } v->stvis.color_format = choose_pixel_format(v); if (v->stvis.color_format == PIPE_FORMAT_NONE) { free(v->visinfo); free(v); return NULL; } v->stvis.depth_stencil_format = choose_depth_stencil_format(xmdpy, depth_size, stencil_size); v->stvis.accum_format = (accum_red_size + accum_green_size + accum_blue_size + accum_alpha_size) ? PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE; v->stvis.samples = num_samples; v->stvis.render_buffer = ST_ATTACHMENT_INVALID; /* XXX minor hack */ v->mesa_visual.level = level; return v; }
/* * Create a new X/Mesa visual. * Input: display - X11 display * visinfo - an XVisualInfo pointer * rgb_flag - GL_TRUE = RGB mode, * GL_FALSE = color index mode * alpha_flag - alpha buffer requested? * db_flag - GL_TRUE = double-buffered, * GL_FALSE = single buffered * stereo_flag - stereo visual? * ximage_flag - GL_TRUE = use an XImage for back buffer, * GL_FALSE = use an off-screen pixmap for back buffer * depth_size - requested bits/depth values, or zero * stencil_size - requested bits/stencil values, or zero * accum_red_size - requested bits/red accum values, or zero * accum_green_size - requested bits/green accum values, or zero * accum_blue_size - requested bits/blue accum values, or zero * accum_alpha_size - requested bits/alpha accum values, or zero * num_samples - number of samples/pixel if multisampling, or zero * level - visual level, usually 0 * visualCaveat - ala the GLX extension, usually GLX_NONE * Return; a new XMesaVisual or 0 if error. */ PUBLIC XMesaVisual XMesaCreateVisual( XMesaDisplay *display, XMesaVisualInfo visinfo, GLboolean rgb_flag, GLboolean alpha_flag, GLboolean db_flag, GLboolean stereo_flag, GLboolean ximage_flag, GLint depth_size, GLint stencil_size, GLint accum_red_size, GLint accum_green_size, GLint accum_blue_size, GLint accum_alpha_size, GLint num_samples, GLint level, GLint visualCaveat ) { char *gamma; XMesaVisual v; GLint red_bits, green_bits, blue_bits, alpha_bits; /* For debugging only */ if (_mesa_getenv("MESA_XSYNC")) { /* This makes debugging X easier. * In your debugger, set a breakpoint on _XError to stop when an * X protocol error is generated. */ XSynchronize( display, 1 ); } /* Color-index rendering not supported. */ if (!rgb_flag) return NULL; v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual); if (!v) { return NULL; } v->display = display; /* Save a copy of the XVisualInfo struct because the user may Xfree() * the struct but we may need some of the information contained in it * at a later time. */ v->visinfo = (XVisualInfo *) malloc(sizeof(*visinfo)); if(!v->visinfo) { free(v); return NULL; } memcpy(v->visinfo, visinfo, sizeof(*visinfo)); /* check for MESA_GAMMA environment variable */ gamma = _mesa_getenv("MESA_GAMMA"); if (gamma) { v->RedGamma = v->GreenGamma = v->BlueGamma = 0.0; sscanf( gamma, "%f %f %f", &v->RedGamma, &v->GreenGamma, &v->BlueGamma ); if (v->RedGamma<=0.0) v->RedGamma = 1.0; if (v->GreenGamma<=0.0) v->GreenGamma = v->RedGamma; if (v->BlueGamma<=0.0) v->BlueGamma = v->RedGamma; } else { v->RedGamma = v->GreenGamma = v->BlueGamma = 1.0; } v->ximage_flag = ximage_flag; v->mesa_visual.redMask = visinfo->red_mask; v->mesa_visual.greenMask = visinfo->green_mask; v->mesa_visual.blueMask = visinfo->blue_mask; v->visualID = visinfo->visualid; v->screen = visinfo->screen; #if !(defined(__cplusplus) || defined(c_plusplus)) v->visualType = xmesa_convert_from_x_visual_type(visinfo->class); #else v->visualType = xmesa_convert_from_x_visual_type(visinfo->c_class); #endif v->mesa_visual.visualRating = visualCaveat; if (alpha_flag) v->mesa_visual.alphaBits = 8; (void) initialize_visual_and_buffer( v, NULL, 0, 0 ); { const int xclass = v->visualType; if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { red_bits = _mesa_bitcount(GET_REDMASK(v)); green_bits = _mesa_bitcount(GET_GREENMASK(v)); blue_bits = _mesa_bitcount(GET_BLUEMASK(v)); } else { /* this is an approximation */ int depth; depth = GET_VISUAL_DEPTH(v); red_bits = depth / 3; depth -= red_bits; green_bits = depth / 2; depth -= green_bits; blue_bits = depth; alpha_bits = 0; assert( red_bits + green_bits + blue_bits == GET_VISUAL_DEPTH(v) ); } alpha_bits = v->mesa_visual.alphaBits; } if (!_mesa_initialize_visual(&v->mesa_visual, db_flag, stereo_flag, red_bits, green_bits, blue_bits, alpha_bits, depth_size, stencil_size, accum_red_size, accum_green_size, accum_blue_size, accum_alpha_size, 0)) { FREE(v); return NULL; } /* XXX minor hack */ v->mesa_visual.level = level; return v; }