WebSVN – Kolibri OS – Blame – /contrib/sdk/sources/Mesa/src/mesa/state_tracker/st_texture.h

Rev	Author	Line No.	Line
4358	Serge	1	/**************************************************************************
		2	*
		3	* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
		4	* All Rights Reserved.
		5	*
		6	* Permission is hereby granted, free of charge, to any person obtaining a
		7	* copy of this software and associated documentation files (the
		8	* "Software"), to deal in the Software without restriction, including
		9	* without limitation the rights to use, copy, modify, merge, publish,
		10	* distribute, sub license, and/or sell copies of the Software, and to
		11	* permit persons to whom the Software is furnished to do so, subject to
		12	* the following conditions:
		13	*
		14	* The above copyright notice and this permission notice (including the
		15	* next paragraph) shall be included in all copies or substantial portions
		16	* of the Software.
		17	*
		18	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
		19	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
		20	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
		21	* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
		22	* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
		23	* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
		24	* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
		25	*
		26	**************************************************************************/
		27
		28	#ifndef ST_TEXTURE_H
		29	#define ST_TEXTURE_H
		30
		31
		32	#include "pipe/p_context.h"
		33	#include "util/u_sampler.h"
		34
		35	#include "main/mtypes.h"
		36
		37
		38	struct pipe_resource;
		39
		40
		41	/**
		42	* Subclass of gl_texure_image.
		43	*/
		44	struct st_texture_image
		45	{
		46	struct gl_texture_image base;
		47
		48	/** Used to store texture data that doesn't fit in the parent
		49	* object's mipmap buffer.
		50	*/
		51	GLubyte *TexData;
		52
		53	/* If stImage->pt != NULL, image data is stored here.
		54	* Else if stImage->TexData != NULL, image is stored there.
		55	* Else there is no image data.
		56	*/
		57	struct pipe_resource *pt;
		58
		59	struct pipe_transfer *transfer;
		60	};
		61
		62
		63	/**
		64	* Subclass of gl_texure_object.
		65	*/
		66	struct st_texture_object
		67	{
		68	struct gl_texture_object base; /* The "parent" object */
		69
		70	/* The texture must include at levels [0..lastLevel] once validated:
		71	*/
		72	GLuint lastLevel;
		73
		74	/** The size of the level=0 mipmap image.
		75	* Note that the number of 1D array layers will be in height0 and the
		76	* number of 2D array layers will be in depth0, as in GL.
		77	*/
		78	GLuint width0, height0, depth0;
		79
		80	/* On validation any active images held in main memory or in other
		81	* textures will be copied to this texture and the old storage freed.
		82	*/
		83	struct pipe_resource *pt;
		84
		85	/* Default sampler view attached to this texture object. Created lazily
		86	* on first binding.
		87	*/
		88	struct pipe_sampler_view *sampler_view;
		89
		90	/* True if this texture comes from the window system. Such a texture
		91	* cannot be reallocated and the format can only be changed with a sampler
		92	* view or a surface.
		93	*/
		94	GLboolean surface_based;
		95
		96	/* If surface_based is true, this format should be used for all sampler
		97	* views and surfaces instead of pt->format.
		98	*/
		99	enum pipe_format surface_format;
		100	};
		101
		102
		103	static INLINE struct st_texture_image *
		104	st_texture_image(struct gl_texture_image *img)
		105	{
		106	return (struct st_texture_image *) img;
		107	}
		108
		109	static INLINE struct st_texture_object *
		110	st_texture_object(struct gl_texture_object *obj)
		111	{
		112	return (struct st_texture_object *) obj;
		113	}
		114
		115
		116	static INLINE struct pipe_resource *
		117	st_get_texobj_resource(struct gl_texture_object *texObj)
		118	{
		119	struct st_texture_object *stObj = st_texture_object(texObj);
		120	return stObj ? stObj->pt : NULL;
		121	}
		122
		123
		124	static INLINE struct pipe_resource *
		125	st_get_stobj_resource(struct st_texture_object *stObj)
		126	{
		127	return stObj ? stObj->pt : NULL;
		128	}
		129
		130
		131	static INLINE struct pipe_sampler_view *
		132	st_create_texture_sampler_view_format(struct pipe_context *pipe,
		133	struct pipe_resource *texture,
		134	enum pipe_format format)
		135	{
		136	struct pipe_sampler_view templ;
		137
		138	u_sampler_view_default_template(&templ, texture, format);
		139
		140	return pipe->create_sampler_view(pipe, texture, &templ);
		141	}
		142
		143	static INLINE struct pipe_sampler_view *
		144	st_create_texture_sampler_view(struct pipe_context *pipe,
		145	struct pipe_resource *texture)
		146	{
		147	return st_create_texture_sampler_view_format(pipe, texture,
		148	texture->format);
		149	}
		150
		151
		152
		153	extern struct pipe_resource *
		154	st_texture_create(struct st_context *st,
		155	enum pipe_texture_target target,
		156	enum pipe_format format,
		157	GLuint last_level,
		158	GLuint width0,
		159	GLuint height0,
		160	GLuint depth0,
		161	GLuint layers,
		162	GLuint nr_samples,
		163	GLuint tex_usage );
		164
		165
		166	extern void
		167	st_gl_texture_dims_to_pipe_dims(GLenum texture,
		168	GLuint widthIn,
		169	GLuint heightIn,
		170	GLuint depthIn,
		171	GLuint *widthOut,
		172	GLuint *heightOut,
		173	GLuint *depthOut,
		174	GLuint *layersOut);
		175
		176	/* Check if an image fits into an existing texture object.
		177	*/
		178	extern GLboolean
		179	st_texture_match_image(const struct pipe_resource *pt,
		180	const struct gl_texture_image *image);
		181
		182	/* Return a pointer to an image within a texture. Return image stride as
		183	* well.
		184	*/
		185	extern GLubyte *
		186	st_texture_image_map(struct st_context st, struct st_texture_image stImage,
		187	enum pipe_transfer_usage usage,
		188	GLuint x, GLuint y, GLuint z,
		189	GLuint w, GLuint h, GLuint d);
		190
		191	extern void
		192	st_texture_image_unmap(struct st_context *st,
		193	struct st_texture_image *stImage);
		194
		195
		196	/* Return pointers to each 2d slice within an image. Indexed by depth
		197	* value.
		198	*/
		199	extern const GLuint *
		200	st_texture_depth_offsets(struct pipe_resource *pt, GLuint level);
		201
		202
		203	/* Upload an image into a texture
		204	*/
		205	extern void
		206	st_texture_image_data(struct st_context *st,
		207	struct pipe_resource *dst,
		208	GLuint face, GLuint level, void *src,
		209	GLuint src_row_pitch, GLuint src_image_pitch);
		210
		211
		212	/* Copy an image between two textures
		213	*/
		214	extern void
		215	st_texture_image_copy(struct pipe_context *pipe,
		216	struct pipe_resource *dst, GLuint dstLevel,
		217	struct pipe_resource *src, GLuint srcLevel,
		218	GLuint face);
		219
		220
		221	extern struct pipe_resource *
		222	st_create_color_map_texture(struct gl_context *ctx);
		223
		224	#endif

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(root)/contrib/sdk/sources/Mesa/src/mesa/state_tracker/st_texture.h – Rev 4826