diff options
Diffstat (limited to 'mesalib/src/mesa/main/texstorage.c')
| -rw-r--r-- | mesalib/src/mesa/main/texstorage.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/texstorage.c b/mesalib/src/mesa/main/texstorage.c new file mode 100644 index 000000000..241a940cc --- /dev/null +++ b/mesalib/src/mesa/main/texstorage.c @@ -0,0 +1,402 @@ +/* + * 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 "mfeatures.h" +#include "teximage.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); + 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; + } +} + + +/** + * Do actual memory allocation for glTexStorage1/2/3D(). + */ +static void +setup_texstorage(struct gl_context *ctx, + struct gl_texture_object *texObj, + GLuint dims, + GLsizei levels, GLenum internalFormat, + GLsizei width, GLsizei height, GLsizei depth) +{ + const GLenum target = texObj->Target; + const GLuint numFaces = (target == GL_TEXTURE_CUBE_MAP) ? 6 : 1; + gl_format texFormat; + GLint level, levelWidth = width, levelHeight = height, levelDepth = depth; + GLuint face; + + assert(levels > 0); + assert(width > 0); + assert(height > 0); + assert(depth > 0); + + texFormat = _mesa_choose_texture_format(ctx, texObj, target, 0, + internalFormat, GL_NONE, GL_NONE); + + /* Set up all the texture object's gl_texture_images */ + for (level = 0; level < levels; level++) { + for (face = 0; face < numFaces; face++) { + const GLenum faceTarget = + (target == GL_TEXTURE_CUBE_MAP) + ? GL_TEXTURE_CUBE_MAP_POSITIVE_X + face : target; + struct gl_texture_image *texImage = + _mesa_get_tex_image(ctx, texObj, faceTarget, level); + + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims); + return; + } + + _mesa_init_teximage_fields(ctx, target, texImage, + levelWidth, levelHeight, levelDepth, + 0, internalFormat, texFormat); + } + + next_mipmap_level_size(target, &levelWidth, &levelHeight, &levelDepth); + } + + assert(levelWidth > 0); + assert(levelHeight > 0); + assert(levelDepth > 0); + + if (!_mesa_is_proxy_texture(texObj->Target)) { + /* 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. + */ + for (level = 0; level < levels; level++) { + for (face = 0; face < numFaces; face++) { + struct gl_texture_image *texImage = texObj->Image[face][level]; + if (texImage) { + _mesa_init_teximage_fields(ctx, target, texImage, + 0, 0, 0, 0, + GL_NONE, MESA_FORMAT_NONE); + } + } + } + + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexStorage%uD", dims); + + return; + } + } + + texObj->Immutable = GL_TRUE; +} + + +/** + * Clear all fields of texture object to zeros. Used for proxy texture tests. + */ +static void +clear_image_fields(struct gl_context *ctx, + GLuint dims, + struct gl_texture_object *texObj) +{ + const GLenum target = texObj->Target; + const GLuint numFaces = (target == GL_TEXTURE_CUBE_MAP) ? 6 : 1; + GLint level; + GLuint face; + + for (level = 0; level < Elements(texObj->Image[0]); level++) { + for (face = 0; face < numFaces; face++) { + const GLenum faceTarget = + (target == GL_TEXTURE_CUBE_MAP) + ? GL_TEXTURE_CUBE_MAP_POSITIVE_X + face : target; + struct gl_texture_image *texImage = + _mesa_get_tex_image(ctx, texObj, faceTarget, level); + + if (!texImage) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexStorage%uD", dims); + return; + } + + _mesa_init_teximage_fields(ctx, target, texImage, + 0, 0, 0, 0, GL_NONE, MESA_FORMAT_NONE); + } + } +} + + +/** + * 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) +{ + const GLboolean isProxy = _mesa_is_proxy_texture(target); + struct gl_texture_object *texObj; + GLuint maxDim; + + /* size check */ + if (width < 1 || height < 1 || depth < 1) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glTexStorage%uD(width, height or depth < 1)", dims); + } + return GL_TRUE; + } + + /* levels check */ + if (levels < 1 || height < 1 || depth < 1) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexStorage%uD(levels < 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; + } + + /* check levels against maximum */ + if (levels > _mesa_max_texture_levels(ctx, target)) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexStorage%uD(levels too large)", dims); + } + return GL_TRUE; + } + + /* check levels against width/height/depth */ + maxDim = MAX3(width, height, depth); + if (levels > _mesa_logbase2(maxDim) + 1) { + if (!isProxy) { + _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 && !isProxy)) { + if (!isProxy) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glTexStorage%uD(texture object 0)", dims); + } + return GL_TRUE; + } + + /* Check if texObj->Immutable is set */ + if (texObj->Immutable) { + if (!isProxy) { + _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 error; + + GET_CURRENT_CONTEXT(ctx); + + texObj = _mesa_get_current_tex_object(ctx, target); + + error = tex_storage_error_check(ctx, dims, target, levels, + internalformat, width, height, depth); + if (!error) { + setup_texstorage(ctx, texObj, dims, levels, internalformat, + width, height, depth); + } + else if (_mesa_is_proxy_texture(target)) { + /* clear all image fields for [levels] */ + clear_image_fields(ctx, dims, texObj); + } +} + + +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 */ +} |