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| 5564 | serge | 1 | /************************************************************************** |
| 2 | * |
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| 3 | * Copyright 2009 VMware, Inc. |
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| 4 | * All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 7 | * copy of this software and associated documentation files (the |
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| 8 | * "Software"), to deal in the Software without restriction, including |
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| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
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| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
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| 11 | * permit persons to whom the Software is furnished to do so, subject to |
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| 12 | * the following conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice (including the |
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| 15 | * next paragraph) shall be included in all copies or substantial portions |
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| 16 | * of the Software. |
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| 17 | * |
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| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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| 21 | * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
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| 22 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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| 23 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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| 24 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | **************************************************************************/ |
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| 27 | |||
| 28 | #include "main/glheader.h" |
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| 29 | #include "st_context.h" |
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| 30 | #include "st_cb_viewport.h" |
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| 31 | |||
| 32 | #include "pipe/p_state.h" |
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| 33 | #include "pipe/p_defines.h" |
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| 34 | #include "util/u_atomic.h" |
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| 35 | |||
| 36 | /** |
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| 37 | * Cast wrapper to convert a struct gl_framebuffer to an st_framebuffer. |
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| 38 | * Return NULL if the struct gl_framebuffer is a user-created framebuffer. |
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| 39 | * We'll only return non-null for window system framebuffers. |
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| 40 | * Note that this function may fail. |
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| 41 | */ |
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| 42 | static inline struct st_framebuffer * |
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| 43 | st_ws_framebuffer(struct gl_framebuffer *fb) |
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| 44 | { |
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| 45 | /* FBO cannot be casted. See st_new_framebuffer */ |
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| 46 | if (fb && _mesa_is_winsys_fbo(fb)) |
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| 47 | return (struct st_framebuffer *) fb; |
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| 48 | return NULL; |
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| 49 | } |
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| 50 | |||
| 51 | static void st_viewport(struct gl_context *ctx) |
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| 52 | { |
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| 53 | struct st_context *st = ctx->st; |
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| 54 | struct st_framebuffer *stdraw; |
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| 55 | struct st_framebuffer *stread; |
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| 56 | |||
| 57 | if (!st->invalidate_on_gl_viewport) |
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| 58 | return; |
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| 59 | |||
| 60 | /* |
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| 61 | * Normally we'd want the state tracker manager to mark the drawables |
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| 62 | * invalid only when needed. This will force the state tracker manager |
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| 63 | * to revalidate the drawable, rather than just update the context with |
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| 64 | * the latest cached drawable info. |
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| 65 | */ |
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| 66 | |||
| 67 | stdraw = st_ws_framebuffer(st->ctx->DrawBuffer); |
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| 68 | stread = st_ws_framebuffer(st->ctx->ReadBuffer); |
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| 69 | |||
| 70 | if (stdraw && stdraw->iface) |
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| 71 | stdraw->iface_stamp = p_atomic_read(&stdraw->iface->stamp) - 1; |
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| 72 | if (stread && stread != stdraw && stread->iface) |
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| 73 | stread->iface_stamp = p_atomic_read(&stread->iface->stamp) - 1; |
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| 74 | } |
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| 75 | |||
| 76 | void st_init_viewport_functions(struct dd_function_table *functions) |
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| 77 | { |
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| 78 | functions->Viewport = st_viewport; |
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| 79 | } |