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| 5564 | serge | 1 | /************************************************************************** |
| 2 | * |
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| 3 | * Copyright 2007 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 | /* Authors: Keith Whitwell |
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| 29 | */ |
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| 30 | |||
| 31 | #include "pipe/p_state.h" |
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| 32 | #include "util/u_inlines.h" |
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| 33 | #include "util/u_framebuffer.h" |
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| 34 | #include "util/u_surface.h" |
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| 35 | #include "lp_context.h" |
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| 36 | #include "lp_scene.h" |
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| 37 | #include "lp_state.h" |
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| 38 | #include "lp_setup.h" |
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| 39 | |||
| 40 | #include "draw/draw_context.h" |
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| 41 | |||
| 42 | #include "util/u_format.h" |
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| 43 | |||
| 44 | |||
| 45 | /** |
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| 46 | * Set the framebuffer surface info: color buffers, zbuffer, stencil buffer. |
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| 47 | */ |
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| 48 | void |
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| 49 | llvmpipe_set_framebuffer_state(struct pipe_context *pipe, |
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| 50 | const struct pipe_framebuffer_state *fb) |
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| 51 | { |
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| 52 | struct llvmpipe_context *lp = llvmpipe_context(pipe); |
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| 53 | |||
| 54 | boolean changed = !util_framebuffer_state_equal(&lp->framebuffer, fb); |
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| 55 | |||
| 56 | assert(fb->width <= LP_MAX_WIDTH); |
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| 57 | assert(fb->height <= LP_MAX_HEIGHT); |
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| 58 | |||
| 59 | if (changed) { |
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| 60 | /* |
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| 61 | * If no depth buffer is bound, send the utility function the default |
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| 62 | * format for no bound depth (PIPE_FORMAT_NONE). |
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| 63 | */ |
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| 64 | enum pipe_format depth_format = fb->zsbuf ? |
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| 65 | fb->zsbuf->format : PIPE_FORMAT_NONE; |
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| 66 | const struct util_format_description *depth_desc = |
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| 67 | util_format_description(depth_format); |
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| 68 | |||
| 69 | util_copy_framebuffer_state(&lp->framebuffer, fb); |
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| 70 | |||
| 71 | if (LP_PERF & PERF_NO_DEPTH) { |
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| 72 | pipe_surface_reference(&lp->framebuffer.zsbuf, NULL); |
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| 73 | } |
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| 74 | |||
| 75 | /* |
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| 76 | * Calculate the floating point depth sense and Minimum Resolvable Depth |
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| 77 | * value for the llvmpipe module. This is separate from the draw module. |
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| 78 | */ |
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| 79 | lp->floating_point_depth = |
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| 80 | (util_get_depth_format_type(depth_desc) == UTIL_FORMAT_TYPE_FLOAT); |
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| 81 | |||
| 82 | lp->mrd = util_get_depth_format_mrd(depth_desc); |
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| 83 | |||
| 84 | /* Tell the draw module how deep the Z/depth buffer is. */ |
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| 85 | draw_set_zs_format(lp->draw, depth_format); |
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| 86 | |||
| 87 | lp_setup_bind_framebuffer( lp->setup, &lp->framebuffer ); |
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| 88 | |||
| 89 | lp->dirty |= LP_NEW_FRAMEBUFFER; |
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| 90 | } |
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| 91 | } |