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authorBrian <brian.paul@tungstengraphics.com>2007-11-02 13:25:13 -0600
committerBrian <brian.paul@tungstengraphics.com>2007-11-05 08:04:48 -0700
commit01b71b8f7a77b3eb5ccc009342c1ebdc7b3dda80 (patch)
tree2fbe3de1880e0bea1316e9fc39f7e28d310ebf8a
parent794e03d3926614036d285f2033d8708c7667814a (diff)
new file for st_framebuffer stuff
-rw-r--r--src/mesa/state_tracker/st_framebuffer.c103
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 0000000000..3997681f36
--- /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;
+}
+
+