--- /dev/null
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2014 Intel Corporation. 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 OR COPYRIGHT HOLDERS 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.
+ *
+ * Authors:
+ * Jason Ekstrand <jason.ekstrand@intel.com>
+ */
+
+#include "glheader.h"
+#include "errors.h"
+#include "enums.h"
+#include "copyimage.h"
+#include "teximage.h"
+#include "texobj.h"
+#include "fbobject.h"
+#include "textureview.h"
+
+static bool
+prepare_target(struct gl_context *ctx, GLuint name, GLenum *target, int level,
+ struct gl_texture_object **tex_obj,
+ struct gl_texture_image **tex_image, GLuint *tmp_tex,
+ const char *dbg_prefix)
+{
+ struct gl_renderbuffer *rb;
+
+ if (name == 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sName = %d)", dbg_prefix, name);
+ return false;
+ }
+
+ /*
+ * INVALID_ENUM is generated
+ * * if either <srcTarget> or <dstTarget>
+ * - is not RENDERBUFFER or a valid non-proxy texture target
+ * - is TEXTURE_BUFFER, or
+ * - is one of the cubemap face selectors described in table 3.17,
+ */
+ switch (*target) {
+ case GL_RENDERBUFFER:
+ /* Not a texture target, but valid */
+ case GL_TEXTURE_1D:
+ case GL_TEXTURE_1D_ARRAY:
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_3D:
+ case GL_TEXTURE_CUBE_MAP:
+ case GL_TEXTURE_RECTANGLE:
+ case GL_TEXTURE_2D_ARRAY:
+ case GL_TEXTURE_CUBE_MAP_ARRAY:
+ case GL_TEXTURE_2D_MULTISAMPLE:
+ case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+ /* These are all valid */
+ break;
+ case GL_TEXTURE_EXTERNAL_OES:
+ /* Only exists in ES */
+ case GL_TEXTURE_BUFFER:
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glCopyImageSubData(%sTarget = %s)", dbg_prefix,
+ _mesa_lookup_enum_by_nr(*target));
+ return false;
+ }
+
+ if (*target == GL_RENDERBUFFER) {
+ rb = _mesa_lookup_renderbuffer(ctx, name);
+ if (!rb) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sName = %u)", dbg_prefix, name);
+ return false;
+ }
+
+ if (!rb->Name) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glCopyImageSubData(%sName incomplete)", dbg_prefix);
+ return false;
+ }
+
+ if (level != 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sLevel = %u)", dbg_prefix, level);
+ return false;
+ }
+
+ if (rb->NumSamples > 1)
+ *target = GL_TEXTURE_2D_MULTISAMPLE;
+ else
+ *target = GL_TEXTURE_2D;
+
+ *tmp_tex = 0;
+ _mesa_GenTextures(1, tmp_tex);
+ if (*tmp_tex == 0)
+ return false; /* Error already set by GenTextures */
+
+ _mesa_BindTexture(*target, *tmp_tex);
+ *tex_obj = _mesa_lookup_texture(ctx, *tmp_tex);
+ *tex_image = _mesa_get_tex_image(ctx, *tex_obj, *target, 0);
+
+ if (!ctx->Driver.BindRenderbufferTexImage(ctx, rb, *tex_image)) {
+ _mesa_problem(ctx, "Failed to create texture from renderbuffer");
+ return false;
+ }
+
+ if (ctx->Driver.FinishRenderTexture && !rb->NeedsFinishRenderTexture) {
+ rb->NeedsFinishRenderTexture = true;
+ ctx->Driver.FinishRenderTexture(ctx, rb);
+ }
+ } else {
+ *tex_obj = _mesa_lookup_texture(ctx, name);
+ if (!*tex_obj) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sName = %u)", dbg_prefix, name);
+ return false;
+ }
+
+ _mesa_test_texobj_completeness(ctx, *tex_obj);
+ if (!(*tex_obj)->_BaseComplete ||
+ (level != 0 && !(*tex_obj)->_MipmapComplete)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glCopyImageSubData(%sName incomplete)", dbg_prefix);
+ return false;
+ }
+
+ if ((*tex_obj)->Target != *target) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glCopyImageSubData(%sTarget = %s)", dbg_prefix,
+ _mesa_lookup_enum_by_nr(*target));
+ return false;
+ }
+
+ if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sLevel = %d)", dbg_prefix, level);
+ return false;
+ }
+
+ *tex_image = _mesa_select_tex_image(ctx, *tex_obj, *target, level);
+ if (!*tex_image) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sLevel = %u)", dbg_prefix, level);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static bool
+check_region_bounds(struct gl_context *ctx, struct gl_texture_image *tex_image,
+ int x, int y, int z, int width, int height, int depth,
+ const char *dbg_prefix)
+{
+ if (width < 0 || height < 0 || depth < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sWidth, %sHeight, or %sDepth is negative)",
+ dbg_prefix, dbg_prefix, dbg_prefix);
+ return false;
+ }
+
+ if (x < 0 || y < 0 || z < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sX, %sY, or %sZ is negative)",
+ dbg_prefix, dbg_prefix, dbg_prefix);
+ return false;
+ }
+
+ if (x + width > tex_image->Width) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sX or %sWidth exceeds image bounds)",
+ dbg_prefix, dbg_prefix);
+ return false;
+ }
+
+ switch (tex_image->TexObject->Target) {
+ case GL_TEXTURE_1D:
+ case GL_TEXTURE_1D_ARRAY:
+ if (y != 0 || height != 1) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sY or %sHeight exceeds image bounds)",
+ dbg_prefix, dbg_prefix);
+ return false;
+ }
+ break;
+ default:
+ if (y + height > tex_image->Height) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sY or %sHeight exceeds image bounds)",
+ dbg_prefix, dbg_prefix);
+ return false;
+ }
+ break;
+ }
+
+ switch (tex_image->TexObject->Target) {
+ case GL_TEXTURE_1D:
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_2D_MULTISAMPLE:
+ case GL_TEXTURE_RECTANGLE:
+ if (z != 0 || depth != 1) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sZ or %sDepth exceeds image bounds)",
+ dbg_prefix, dbg_prefix);
+ return false;
+ }
+ break;
+ case GL_TEXTURE_CUBE_MAP:
+ if (z < 0 || z + depth > 6) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sZ or %sDepth exceeds image bounds)",
+ dbg_prefix, dbg_prefix);
+ return false;
+ }
+ break;
+ case GL_TEXTURE_1D_ARRAY:
+ if (z < 0 || z + depth > tex_image->Height) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sZ or %sDepth exceeds image bounds)",
+ dbg_prefix, dbg_prefix);
+ return false;
+ }
+ break;
+ case GL_TEXTURE_CUBE_MAP_ARRAY:
+ case GL_TEXTURE_2D_ARRAY:
+ case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+ case GL_TEXTURE_3D:
+ if (z < 0 || z + depth > tex_image->Depth) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(%sZ or %sDepth exceeds image bounds)",
+ dbg_prefix, dbg_prefix);
+ return false;
+ }
+ break;
+ }
+
+ return true;
+}
+
+void
+_mesa_CopyImageSubData(GLuint srcName, GLenum srcTarget, GLint srcLevel,
+ GLint srcX, GLint srcY, GLint srcZ,
+ GLuint dstName, GLenum dstTarget, GLint dstLevel,
+ GLint dstX, GLint dstY, GLint dstZ,
+ GLsizei srcWidth, GLsizei srcHeight, GLsizei srcDepth)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLuint tmpTexNames[2] = { 0, 0 };
+ struct gl_texture_object *srcTexObj, *dstTexObj;
+ struct gl_texture_image *srcTexImage, *dstTexImage;
+ GLuint src_bw, src_bh, dst_bw, dst_bh;
+ int i, srcNewZ, dstNewZ, Bpt;
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glCopyImageSubData(%u, %s, %d, %d, %d, %d, "
+ "%u, %s, %d, %d, %d, %d, "
+ "%d, %d, %d)\n",
+ srcName, _mesa_lookup_enum_by_nr(srcTarget), srcLevel,
+ srcX, srcY, srcZ,
+ dstName, _mesa_lookup_enum_by_nr(dstTarget), dstLevel,
+ dstX, dstY, dstZ,
+ srcWidth, srcHeight, srcWidth);
+
+ if (!prepare_target(ctx, srcName, &srcTarget, srcLevel,
+ &srcTexObj, &srcTexImage, &tmpTexNames[0], "src"))
+ goto cleanup;
+
+ if (!prepare_target(ctx, dstName, &dstTarget, dstLevel,
+ &dstTexObj, &dstTexImage, &tmpTexNames[1], "dst"))
+ goto cleanup;
+
+ _mesa_get_format_block_size(srcTexImage->TexFormat, &src_bw, &src_bh);
+ if ((srcX % src_bw != 0) || (srcY % src_bh != 0) ||
+ (srcWidth % src_bw != 0) || (srcHeight % src_bh != 0)) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(unaligned src rectangle)");
+ goto cleanup;
+ }
+
+ _mesa_get_format_block_size(dstTexImage->TexFormat, &dst_bw, &dst_bh);
+ if ((dstX % dst_bw != 0) || (dstY % dst_bh != 0)) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(unaligned dst rectangle)");
+ goto cleanup;
+ }
+
+ /* Very simple sanity check. This is sufficient if one of the textures
+ * is compressed. */
+ Bpt = _mesa_get_format_bytes(srcTexImage->TexFormat);
+ if (_mesa_get_format_bytes(dstTexImage->TexFormat) != Bpt) {
+ _mesa_error(ctx, GL_INVALID_VALUE,
+ "glCopyImageSubData(internalFormat mismatch)");
+ goto cleanup;
+ }
+
+ if (!check_region_bounds(ctx, srcTexImage, srcX, srcY, srcZ,
+ srcWidth, srcHeight, srcDepth, "src"))
+ goto cleanup;
+
+ if (!check_region_bounds(ctx, dstTexImage, dstX, dstY, dstZ,
+ (srcWidth / src_bw) * dst_bw,
+ (srcHeight / src_bh) * dst_bh, srcDepth, "dst"))
+ goto cleanup;
+
+ if (_mesa_is_format_compressed(srcTexImage->TexFormat)) {
+ /* XXX: Technically, we should probaby do some more specific checking
+ * here. However, this should be sufficient for all compressed
+ * formats that mesa supports since it is a direct memory copy.
+ */
+ } else if (_mesa_is_format_compressed(dstTexImage->TexFormat)) {
+ } else if (_mesa_texture_view_compatible_format(ctx,
+ srcTexImage->InternalFormat,
+ dstTexImage->InternalFormat)) {
+ } else {
+ return; /* Error loged by _mesa_texture_view_compatible_format */
+ }
+
+ for (i = 0; i < srcDepth; ++i) {
+ if (srcTexObj->Target == GL_TEXTURE_CUBE_MAP) {
+ srcTexImage = srcTexObj->Image[i + srcZ][srcLevel];
+ srcNewZ = 0;
+ } else {
+ srcNewZ = srcZ + i;
+ }
+
+ if (dstTexObj->Target == GL_TEXTURE_CUBE_MAP) {
+ dstTexImage = dstTexObj->Image[i + dstZ][dstLevel];
+ dstNewZ = 0;
+ } else {
+ dstNewZ = dstZ + i;
+ }
+
+ ctx->Driver.CopyImageSubData(ctx, srcTexImage, srcX, srcY, srcNewZ,
+ dstTexImage, dstX, dstY, dstNewZ,
+ srcWidth, srcHeight);
+ }
+
+cleanup:
+ _mesa_DeleteTextures(2, tmpTexNames);
+}
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