/************************************************************************** * * 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; unsigned int validated_first_level; unsigned int validated_last_level; /* 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 */ bool prev_glsl130_or_later; /** The value of the sampler's sRGBDecode state at the previous validation */ GLenum prev_sRGBDecode; /** * Set when the texture images of this texture object might not all be in * the pipe_resource *pt above. */ bool needs_validation; }; 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, unsigned widthIn, uint16_t heightIn, uint16_t depthIn, unsigned *widthOut, uint16_t *heightOut, uint16_t *depthOut, uint16_t *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); void st_destroy_bound_texture_handles(struct st_context *st); void st_destroy_bound_image_handles(struct st_context *st); bool st_etc_fallback(struct st_context *st, struct gl_texture_image *texImage); void st_convert_image(const struct st_context *st, const struct gl_image_unit *u, struct pipe_image_view *img); void st_convert_image_from_unit(const struct st_context *st, struct pipe_image_view *img, GLuint imgUnit); void st_convert_sampler(const struct st_context *st, const struct gl_texture_object *texobj, const struct gl_sampler_object *msamp, float tex_unit_lod_bias, struct pipe_sampler_state *sampler); void st_convert_sampler_from_unit(const struct st_context *st, struct pipe_sampler_state *sampler, GLuint texUnit); void st_update_single_texture(struct st_context *st, struct pipe_sampler_view **sampler_view, GLuint texUnit, bool glsl130_or_later); void st_make_bound_samplers_resident(struct st_context *st, struct gl_program *prog); void st_make_bound_images_resident(struct st_context *st, struct gl_program *prog); #endif