diff options
Diffstat (limited to 'src/gallium/auxiliary/util')
| -rw-r--r-- | src/gallium/auxiliary/util/Makefile | 1 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/SConscript | 1 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_surface.c | 113 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_surface.h | 52 |
4 files changed, 167 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/Makefile b/src/gallium/auxiliary/util/Makefile index 5035e9cc133..2995aba1b91 100644 --- a/src/gallium/auxiliary/util/Makefile +++ b/src/gallium/auxiliary/util/Makefile @@ -23,6 +23,7 @@ C_SOURCES = \ u_snprintf.c \ u_stream_stdc.c \ u_stream_wd.c \ + u_surface.c \ u_tile.c \ u_time.c \ u_timed_winsys.c \ diff --git a/src/gallium/auxiliary/util/SConscript b/src/gallium/auxiliary/util/SConscript index 8317263bb8b..d3ac7f747fd 100644 --- a/src/gallium/auxiliary/util/SConscript +++ b/src/gallium/auxiliary/util/SConscript @@ -24,6 +24,7 @@ util = env.ConvenienceLibrary( 'u_snprintf.c', 'u_stream_stdc.c', 'u_stream_wd.c', + 'u_surface.c', 'u_tile.c', 'u_time.c', 'u_timed_winsys.c', diff --git a/src/gallium/auxiliary/util/u_surface.c b/src/gallium/auxiliary/util/u_surface.c new file mode 100644 index 00000000000..85e443204e3 --- /dev/null +++ b/src/gallium/auxiliary/util/u_surface.c @@ -0,0 +1,113 @@ +/************************************************************************** + * + * Copyright 2009 VMware, Inc. 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 VMWARE 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. + * + **************************************************************************/ + +/** + * @file + * Surface utility functions. + * + * @author Brian Paul + */ + + +#include "pipe/p_screen.h" +#include "pipe/p_state.h" +#include "pipe/p_defines.h" + +#include "util/u_surface.h" + + +/** + * Helper to quickly create an RGBA rendering surface of a certain size. + * \param textureOut returns the new texture + * \param surfaceOut returns the new surface + * \return TRUE for success, FALSE if failure + */ +boolean +util_create_rgba_surface(struct pipe_screen *screen, + uint width, uint height, + struct pipe_texture **textureOut, + struct pipe_surface **surfaceOut) +{ + static const enum pipe_format rgbaFormats[] = { + PIPE_FORMAT_A8R8G8B8_UNORM, + PIPE_FORMAT_B8G8R8A8_UNORM, + PIPE_FORMAT_R8G8B8A8_UNORM, + PIPE_FORMAT_NONE + }; + const uint target = PIPE_TEXTURE_2D; + const uint usage = PIPE_TEXTURE_USAGE_RENDER_TARGET; + enum pipe_format format = PIPE_FORMAT_NONE; + struct pipe_texture templ; + uint i; + + /* Choose surface format */ + for (i = 0; rgbaFormats[i]; i++) { + if (screen->is_format_supported(screen, rgbaFormats[i], + target, usage, 0)) { + format = rgbaFormats[i]; + break; + } + } + if (format == PIPE_FORMAT_NONE) + return FALSE; /* unable to get an rgba format!?! */ + + /* create texture */ + memset(&templ, 0, sizeof(templ)); + templ.target = target; + templ.format = format; + templ.last_level = 0; + templ.width[0] = width; + templ.height[0] = height; + templ.depth[0] = 1; + pf_get_block(format, &templ.block); + templ.tex_usage = usage; + + *textureOut = screen->texture_create(screen, &templ); + if (!*textureOut) + return FALSE; + + /* create surface / view into texture */ + *surfaceOut = screen->get_tex_surface(screen, *textureOut, 0, 0, 0, PIPE_BUFFER_USAGE_GPU_WRITE); + if (!*surfaceOut) { + pipe_texture_reference(textureOut, NULL); + return FALSE; + } + + return TRUE; +} + + +/** + * Release the surface and texture from util_create_rgba_surface(). + */ +void +util_destroy_rgba_surface(struct pipe_texture *texture, + struct pipe_surface *surface) +{ + pipe_surface_reference(&surface, NULL); + pipe_texture_reference(&texture, NULL); +} + diff --git a/src/gallium/auxiliary/util/u_surface.h b/src/gallium/auxiliary/util/u_surface.h new file mode 100644 index 00000000000..a5b73cfc20a --- /dev/null +++ b/src/gallium/auxiliary/util/u_surface.h @@ -0,0 +1,52 @@ +/************************************************************************** + * + * Copyright 2009 VMware, Inc. 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 VMWARE 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. + * + **************************************************************************/ + + +#ifndef U_SURFACE_H +#define U_SURFACE_H + + +#include "pipe/p_compiler.h" + + +struct pipe_screen; +struct pipe_texture; +struct pipe_surface; + + +extern boolean +util_create_rgba_surface(struct pipe_screen *screen, + uint width, uint height, + struct pipe_texture **textureOut, + struct pipe_surface **surfaceOut); + + +extern void +util_destroy_rgba_surface(struct pipe_texture *texture, + struct pipe_surface *surface); + + +#endif /* U_SURFACE_H */ |