+++ /dev/null
-/*
- * 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 <precomp.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;
- 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) {
- *height /= 2;
- }
-
- if (*depth > 1) {
- *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, 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, 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, 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_select_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_select_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 */
-}