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| -rw-r--r-- | src/mesa/state_tracker/st_framebuffer.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_framebuffer.c b/src/mesa/state_tracker/st_framebuffer.c new file mode 100644 index 00000000000..3997681f360 --- /dev/null +++ b/src/mesa/state_tracker/st_framebuffer.c @@ -0,0 +1,103 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * 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, sub license, 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 (including the + * next paragraph) 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. + * + **************************************************************************/ + + +#include "main/imports.h" +#include "main/context.h" +#include "st_public.h" +#include "st_context.h" + + +struct st_framebuffer *st_create_framebuffer( const __GLcontextModes *visual ) +{ + struct st_framebuffer *stfb + = CALLOC_STRUCT(st_framebuffer); + if (stfb) { + +#if 0 + /* from intel driver... */ + + GLboolean swStencil = (mesaVis->stencilBits > 0 && + mesaVis->depthBits != 24); + GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8); + + struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer); + if (!intel_fb) + return GL_FALSE; + + _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis); + + /* + * XXX Create pipe_surfaces for front/back buffers, + * hand them to state tracker to create a framebuffer object. + */ + + { + /* fake frontbuffer */ + /* XXX allocation should only happen in the unusual case + it's actually needed */ + struct gl_renderbuffer *rb = st_new_renderbuffer_fb(rgbFormat); + _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT, rb); + } + + if (mesaVis->doubleBufferMode) { + struct gl_renderbuffer *rb = st_new_renderbuffer_fb(rgbFormat); + _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT, rb); + } + + if (mesaVis->depthBits == 24 && mesaVis->stencilBits == 8) { + /* combined depth/stencil buffer */ + struct gl_renderbuffer *depthStencilRb + = st_new_renderbuffer_fb(GL_DEPTH24_STENCIL8_EXT); + /* note: bind RB to two attachment points */ + _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, depthStencilRb); + _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,depthStencilRb); + } + else if (mesaVis->depthBits == 16) { + /* just 16-bit depth buffer, no hw stencil */ + struct gl_renderbuffer *depthRb + = st_new_renderbuffer_fb(GL_DEPTH_COMPONENT16); + _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, depthRb); + } + + + /* now add any/all software-based renderbuffers we may need */ + _mesa_add_soft_renderbuffers(&intel_fb->Base, + GL_FALSE, /* never sw color */ + GL_FALSE, /* never sw depth */ + swStencil, mesaVis->accumRedBits > 0, + GL_FALSE, /* never sw alpha */ + GL_FALSE /* never sw aux */ ); + driDrawPriv->driverPrivate = (void *) intel_fb; + +#endif + + } + return stfb; +} + + |