| /************************************************************************** |
| * |
| * Copyright 2007 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 ST_TEXTURE_H |
| #define ST_TEXTURE_H |
| |
| |
| #include "pipe/p_context.h" |
| #include "util/u_sampler.h" |
| |
| #include "main/mtypes.h" |
| |
| |
| struct pipe_resource; |
| |
| |
| struct st_texture_image_transfer { |
| struct pipe_transfer *transfer; |
| |
| /* For ETC fallback. */ |
| GLubyte *temp_data; /**< Temporary ETC texture storage. */ |
| unsigned temp_stride; /**< Stride of the ETC texture storage. */ |
| GLubyte *map; /**< Saved map pointer of the uncompressed transfer. */ |
| }; |
| |
| |
| /** |
| * Subclass of gl_texure_image. |
| */ |
| struct st_texture_image |
| { |
| struct gl_texture_image base; |
| |
| /* If stImage->pt != NULL, image data is stored here. |
| * Else there is no image data. |
| */ |
| struct pipe_resource *pt; |
| |
| /* List of transfers, allocated on demand. |
| * transfer[layer] is a mapping for that layer. |
| */ |
| struct st_texture_image_transfer *transfer; |
| unsigned num_transfers; |
| |
| /* For ETC images, keep track of the original data. This is necessary for |
| * mapping/unmapping, as well as image copies. |
| */ |
| GLubyte *etc_data; |
| }; |
| |
| |
| /** |
| * Subclass of gl_texure_object. |
| */ |
| struct st_texture_object |
| { |
| struct gl_texture_object base; /* The "parent" object */ |
| |
| /* The texture must include at levels [0..lastLevel] once validated: |
| */ |
| GLuint lastLevel; |
| |
| /* On validation any active images held in main memory or in other |
| * textures will be copied to this texture and the old storage freed. |
| */ |
| struct pipe_resource *pt; |
| |
| /* Number of views in sampler_views array */ |
| GLuint num_sampler_views; |
| |
| /* Array of sampler views (one per context) attached to this texture |
| * object. Created lazily on first binding in context. |
| */ |
| struct pipe_sampler_view **sampler_views; |
| |
| /* True if this texture comes from the window system. Such a texture |
| * cannot be reallocated and the format can only be changed with a sampler |
| * view or a surface. |
| */ |
| GLboolean surface_based; |
| |
| /* If surface_based is true, this format should be used for all sampler |
| * views and surfaces instead of pt->format. |
| */ |
| enum pipe_format surface_format; |
| |
| /* When non-zero, samplers should use this layer instead of the one |
| * specified by the GL state. |
| * |
| * This is used for VDPAU interop, where imported pipe_resources may be |
| * array textures (containing layers with different fields) even though the |
| * GL state describes one non-array texture per field. |
| */ |
| uint layer_override; |
| |
| /** The glsl version of the shader seen during the previous validation */ |
| unsigned prev_glsl_version; |
| /** The value of the sampler's sRGBDecode state at the previous validation */ |
| GLenum prev_sRGBDecode; |
| }; |
| |
| |
| static inline struct st_texture_image * |
| st_texture_image(struct gl_texture_image *img) |
| { |
| return (struct st_texture_image *) img; |
| } |
| |
| static inline const struct st_texture_image * |
| st_texture_image_const(const struct gl_texture_image *img) |
| { |
| return (const struct st_texture_image *) img; |
| } |
| |
| static inline struct st_texture_object * |
| st_texture_object(struct gl_texture_object *obj) |
| { |
| return (struct st_texture_object *) obj; |
| } |
| |
| static inline const struct st_texture_object * |
| st_texture_object_const(const struct gl_texture_object *obj) |
| { |
| return (const struct st_texture_object *) obj; |
| } |
| |
| |
| static inline struct pipe_resource * |
| st_get_texobj_resource(struct gl_texture_object *texObj) |
| { |
| struct st_texture_object *stObj = st_texture_object(texObj); |
| return stObj ? stObj->pt : NULL; |
| } |
| |
| |
| static inline struct pipe_resource * |
| st_get_stobj_resource(struct st_texture_object *stObj) |
| { |
| return stObj ? stObj->pt : NULL; |
| } |
| |
| |
| static inline struct st_texture_object * |
| st_get_texture_object(struct gl_context *ctx, |
| const struct gl_program *prog, |
| unsigned unit) |
| { |
| const GLuint texUnit = prog->SamplerUnits[unit]; |
| struct gl_texture_object *texObj = ctx->Texture.Unit[texUnit]._Current; |
| |
| if (!texObj) |
| return NULL; |
| |
| return st_texture_object(texObj); |
| } |
| |
| static inline enum pipe_format |
| st_get_view_format(struct st_texture_object *stObj) |
| { |
| if (!stObj) |
| return PIPE_FORMAT_NONE; |
| return stObj->surface_based ? stObj->surface_format : stObj->pt->format; |
| } |
| |
| |
| extern struct pipe_resource * |
| st_texture_create(struct st_context *st, |
| enum pipe_texture_target target, |
| enum pipe_format format, |
| GLuint last_level, |
| GLuint width0, |
| GLuint height0, |
| GLuint depth0, |
| GLuint layers, |
| GLuint nr_samples, |
| GLuint tex_usage ); |
| |
| |
| extern void |
| st_gl_texture_dims_to_pipe_dims(GLenum texture, |
| GLuint widthIn, |
| GLuint heightIn, |
| GLuint depthIn, |
| GLuint *widthOut, |
| GLuint *heightOut, |
| GLuint *depthOut, |
| GLuint *layersOut); |
| |
| /* Check if an image fits into an existing texture object. |
| */ |
| extern GLboolean |
| st_texture_match_image(struct st_context *st, |
| const struct pipe_resource *pt, |
| const struct gl_texture_image *image); |
| |
| /* Return a pointer to an image within a texture. Return image stride as |
| * well. |
| */ |
| extern GLubyte * |
| st_texture_image_map(struct st_context *st, struct st_texture_image *stImage, |
| enum pipe_transfer_usage usage, |
| GLuint x, GLuint y, GLuint z, |
| GLuint w, GLuint h, GLuint d, |
| struct pipe_transfer **transfer); |
| |
| extern void |
| st_texture_image_unmap(struct st_context *st, |
| struct st_texture_image *stImage, unsigned slice); |
| |
| |
| /* Return pointers to each 2d slice within an image. Indexed by depth |
| * value. |
| */ |
| extern const GLuint * |
| st_texture_depth_offsets(struct pipe_resource *pt, GLuint level); |
| |
| /* Copy an image between two textures |
| */ |
| extern void |
| st_texture_image_copy(struct pipe_context *pipe, |
| struct pipe_resource *dst, GLuint dstLevel, |
| struct pipe_resource *src, GLuint srcLevel, |
| GLuint face); |
| |
| |
| extern struct pipe_resource * |
| st_create_color_map_texture(struct gl_context *ctx); |
| |
| |
| bool |
| st_etc_fallback(struct st_context *st, struct gl_texture_image *texImage); |
| |
| #endif |