/* * Mesa 3-D graphics library * * Copyright (C) 2011 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, sublicense, * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS 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 texstorage.c * GL_ARB_texture_storage functions */ #include "glheader.h" #include "context.h" #include "enums.h" #include "imports.h" #include "macros.h" #include "teximage.h" #include "texobj.h" #include "texstorage.h" #include "mtypes.h" /** * Check if the given texture target is a legal texture object target * for a glTexStorage() command. * This is a bit different than legal_teximage_target() when it comes * to cube maps. */ static GLboolean legal_texobj_target(struct gl_context *ctx, GLuint dims, GLenum target) { switch (dims) { case 1: switch (target) { case GL_TEXTURE_1D: case GL_PROXY_TEXTURE_1D: return GL_TRUE; default: return GL_FALSE; } case 2: switch (target) { case GL_TEXTURE_2D: case GL_PROXY_TEXTURE_2D: return GL_TRUE; case GL_TEXTURE_CUBE_MAP: case GL_PROXY_TEXTURE_CUBE_MAP: return ctx->Extensions.ARB_texture_cube_map; case GL_TEXTURE_RECTANGLE: case GL_PROXY_TEXTURE_RECTANGLE: return ctx->Extensions.NV_texture_rectangle; case GL_TEXTURE_1D_ARRAY: case GL_PROXY_TEXTURE_1D_ARRAY: return (ctx->Extensions.MESA_texture_array || ctx->Extensions.EXT_texture_array); default: return GL_FALSE; } case 3: switch (target) { case GL_TEXTURE_3D: case GL_PROXY_TEXTURE_3D: return GL_TRUE; case GL_TEXTURE_2D_ARRAY: case GL_PROXY_TEXTURE_2D_ARRAY: return (ctx->Extensions.MESA_texture_array || ctx->Extensions.EXT_texture_array); case GL_TEXTURE_CUBE_MAP_ARRAY: case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY: return ctx->Extensions.ARB_texture_cube_map_array; default: return GL_FALSE; } default: _mesa_problem(ctx, "invalid dims=%u in legal_texobj_target()", dims); return GL_FALSE; } } /** * Compute the size of the next mipmap level. */ static void next_mipmap_level_size(GLenum target, GLint *width, GLint *height, GLint *depth) { if (*width > 1) { *width /= 2; } if ((*height > 1) && (target != GL_TEXTURE_1D_ARRAY)) { *height /= 2; } if ((*depth > 1) && (target != GL_TEXTURE_2D_ARRAY)) { *depth /= 2; } } /** Helper to get a particular texture image in a texture object */ static struct gl_texture_image * get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj, GLuint face, GLuint level) { const GLenum faceTarget = (texObj->Target == GL_TEXTURE_CUBE_MAP || texObj->Target == GL_PROXY_TEXTURE_CUBE_MAP) ? GL_TEXTURE_CUBE_MAP_POSITIVE_X + face : texObj->Target; return _mesa_get_tex_image(ctx, texObj, faceTarget, level); } static GLboolean initialize_texture_fields(struct gl_context *ctx, struct gl_texture_object *texObj, GLint levels, GLsizei width, GLsizei height, GLsizei depth, GLenum internalFormat, gl_format texFormat) { const GLenum target = texObj->Target; const GLuint numFaces = _mesa_num_tex_faces(target); GLint level, levelWidth = width, levelHeight = height, levelDepth = depth; GLuint face; /* Set up all the texture object's gl_texture_images */ for (level = 0; level < levels; level++) { for (face = 0; face < numFaces; face++) { struct gl_texture_image *texImage = get_tex_image(ctx, texObj, face, level); if (!texImage) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexStorage"); return GL_FALSE; } _mesa_init_teximage_fields(ctx, texImage, levelWidth, levelHeight, levelDepth, 0, internalFormat, texFormat); } next_mipmap_level_size(target, &levelWidth, &levelHeight, &levelDepth); } return GL_TRUE; } /** * Clear all fields of texture object to zeros. Used for proxy texture tests. * Used for proxy texture tests (and to clean up when a texture memory * allocation fails). */ static void clear_texture_fields(struct gl_context *ctx, struct gl_texture_object *texObj) { const GLenum target = texObj->Target; const GLuint numFaces = _mesa_num_tex_faces(target); GLint level; GLuint face; for (level = 0; level < Elements(texObj->Image[0]); level++) { for (face = 0; face < numFaces; face++) { struct gl_texture_image *texImage = get_tex_image(ctx, texObj, face, level); if (!texImage) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexStorage"); return; } _mesa_init_teximage_fields(ctx, texImage, 0, 0, 0, 0, /* w, h, d, border */ GL_NONE, MESA_FORMAT_NONE); } } } GLboolean _mesa_is_legal_tex_storage_format(struct gl_context *ctx, GLenum internalformat) { /* check internal format - note that only sized formats are allowed */ switch (internalformat) { case GL_ALPHA: case GL_LUMINANCE: case GL_LUMINANCE_ALPHA: case GL_INTENSITY: case GL_RED: case GL_RG: case GL_RGB: case GL_RGBA: case GL_BGRA: case GL_DEPTH_COMPONENT: case GL_DEPTH_STENCIL: case GL_COMPRESSED_ALPHA: case GL_COMPRESSED_LUMINANCE_ALPHA: case GL_COMPRESSED_LUMINANCE: case GL_COMPRESSED_INTENSITY: case GL_COMPRESSED_RGB: case GL_COMPRESSED_RGBA: case GL_COMPRESSED_SRGB: case GL_COMPRESSED_SRGB_ALPHA: case GL_COMPRESSED_SLUMINANCE: case GL_COMPRESSED_SLUMINANCE_ALPHA: case GL_RED_INTEGER: case GL_GREEN_INTEGER: case GL_BLUE_INTEGER: case GL_ALPHA_INTEGER: case GL_RGB_INTEGER: case GL_RGBA_INTEGER: case GL_BGR_INTEGER: case GL_BGRA_INTEGER: case GL_LUMINANCE_INTEGER_EXT: case GL_LUMINANCE_ALPHA_INTEGER_EXT: /* these unsized formats are illegal */ return GL_FALSE; default: return _mesa_base_tex_format(ctx, internalformat) > 0; } } /** * Do error checking for calls to glTexStorage1/2/3D(). * If an error is found, record it with _mesa_error(), unless the target * is a proxy texture. * \return GL_TRUE if any error, GL_FALSE otherwise. */ static GLboolean tex_storage_error_check(struct gl_context *ctx, GLuint dims, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth) { struct gl_texture_object *texObj; if (!_mesa_is_legal_tex_storage_format(ctx, internalformat)) { _mesa_error(ctx, GL_INVALID_ENUM, "glTexStorage%uD(internalformat = %s)", dims, _mesa_lookup_enum_by_nr(internalformat)); return GL_TRUE; } /* size check */ if (width < 1 || height < 1 || depth < 1) { _mesa_error(ctx, GL_INVALID_VALUE, "glTexStorage%uD(width, height or depth < 1)", dims); return GL_TRUE; } /* target check */ if (!legal_texobj_target(ctx, dims, target)) { _mesa_error(ctx, GL_INVALID_ENUM, "glTexStorage%uD(illegal target=%s)", dims, _mesa_lookup_enum_by_nr(target)); return GL_TRUE; } /* levels check */ if (levels < 1) { _mesa_error(ctx, GL_INVALID_VALUE, "glTexStorage%uD(levels < 1)", dims); return GL_TRUE; } /* check levels against maximum (note different error than above) */ if (levels > (GLint) _mesa_max_texture_levels(ctx, target)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glTexStorage%uD(levels too large)", dims); return GL_TRUE; } /* check levels against width/height/depth */ if (levels > _mesa_get_tex_max_num_levels(target, width, height, depth)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glTexStorage%uD(too many levels for max texture dimension)", dims); return GL_TRUE; } /* non-default texture object check */ texObj = _mesa_get_current_tex_object(ctx, target); if (!texObj || (texObj->Name == 0)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glTexStorage%uD(texture object 0)", dims); return GL_TRUE; } /* Check if texObj->Immutable is set */ if (texObj->Immutable) { _mesa_error(ctx, GL_INVALID_OPERATION, "glTexStorage%uD(immutable)", dims); return GL_TRUE; } return GL_FALSE; } /** * Helper used by _mesa_TexStorage1/2/3D(). */ static void texstorage(GLuint dims, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth) { struct gl_texture_object *texObj; GLboolean sizeOK, dimensionsOK; gl_format texFormat; GET_CURRENT_CONTEXT(ctx); if (tex_storage_error_check(ctx, dims, target, levels, internalformat, width, height, depth)) { return; /* error was recorded */ } texObj = _mesa_get_current_tex_object(ctx, target); assert(texObj); texFormat = _mesa_choose_texture_format(ctx, texObj, target, 0, internalformat, GL_NONE, GL_NONE); assert(texFormat != MESA_FORMAT_NONE); /* check that width, height, depth are legal for the mipmap level */ dimensionsOK = _mesa_legal_texture_dimensions(ctx, target, 0, width, height, depth, 0); sizeOK = ctx->Driver.TestProxyTexImage(ctx, target, 0, texFormat, width, height, depth, 0); if (_mesa_is_proxy_texture(texObj->Target)) { if (dimensionsOK && sizeOK) { initialize_texture_fields(ctx, texObj, levels, width, height, depth, internalformat, texFormat); } else { /* clear all image fields for [levels] */ clear_texture_fields(ctx, texObj); } } else { if (!dimensionsOK) { _mesa_error(ctx, GL_INVALID_VALUE, "glTexStorage%uD(invalid width, height or depth)", dims); return; } if (!sizeOK) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexStorage%uD(texture too large)", dims); } assert(levels > 0); assert(width > 0); assert(height > 0); assert(depth > 0); if (!initialize_texture_fields(ctx, texObj, levels, width, height, depth, internalformat, texFormat)) { return; } /* Do actual texture memory allocation */ if (!ctx->Driver.AllocTextureStorage(ctx, texObj, levels, width, height, depth)) { /* Reset the texture images' info to zeros. * Strictly speaking, we probably don't have to do this since * generating GL_OUT_OF_MEMORY can leave things in an undefined * state but this puts things in a consistent state. */ clear_texture_fields(ctx, texObj); _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexStorage%uD", dims); return; } texObj->Immutable = GL_TRUE; texObj->ImmutableLevels = levels; } } void GLAPIENTRY _mesa_TexStorage1D(GLenum target, GLsizei levels, GLenum internalformat, GLsizei width) { texstorage(1, target, levels, internalformat, width, 1, 1); } void GLAPIENTRY _mesa_TexStorage2D(GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height) { texstorage(2, target, levels, internalformat, width, height, 1); } void GLAPIENTRY _mesa_TexStorage3D(GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth) { texstorage(3, target, levels, internalformat, width, height, depth); } /* * Note: we don't support GL_EXT_direct_state_access and the spec says * we don't need the following functions. However, glew checks for the * presence of all six functions and will say that GL_ARB_texture_storage * is not supported if these functions are missing. */ void GLAPIENTRY _mesa_TextureStorage1DEXT(GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width) { /* no-op */ } void GLAPIENTRY _mesa_TextureStorage2DEXT(GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height) { /* no-op */ } void GLAPIENTRY _mesa_TextureStorage3DEXT(GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth) { /* no-op */ }