--- /dev/null
+/*
+ * Copyright 2003 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 (including the
+ * next paragraph) 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 VMWARE AND/OR ITS SUPPLIERS 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.
+ */
+
+#include "main/mtypes.h"
+#include "main/enums.h"
+#include "main/image.h"
+#include "main/teximage.h"
+#include "main/texobj.h"
+#include "main/texstate.h"
+#include "main/fbobject.h"
+
+#include "drivers/common/meta.h"
+
+#include "intel_screen.h"
+#include "intel_mipmap_tree.h"
+#include "intel_fbo.h"
+#include "intel_tex.h"
+#include "intel_blit.h"
+#include "brw_context.h"
+
+#define FILE_DEBUG_FLAG DEBUG_TEXTURE
+
+
+static bool
+intel_copy_texsubimage(struct brw_context *brw,
+ struct intel_texture_image *intelImage,
+ GLint dstx, GLint dsty, GLint slice,
+ struct intel_renderbuffer *irb,
+ GLint x, GLint y, GLsizei width, GLsizei height)
+{
+ const GLenum internalFormat = intelImage->base.Base.InternalFormat;
+ bool ret;
+
+ /* No pixel transfer operations (zoom, bias, mapping), just a blit */
+ if (brw->ctx._ImageTransferState)
+ return false;
+
+ intel_prepare_render(brw);
+
+ /* glCopyTexSubImage() can be called on a multisampled renderbuffer (if
+ * that renderbuffer is associated with the window system framebuffer),
+ * however the hardware blitter can't handle this case, so fall back to
+ * meta (which can, since it uses ReadPixels).
+ */
+ if (irb->Base.Base.NumSamples != 0)
+ return false;
+
+ /* glCopyTexSubImage() can't be called on a multisampled texture. */
+ assert(intelImage->base.Base.NumSamples == 0);
+
+ if (!intelImage->mt || !irb || !irb->mt) {
+ if (unlikely(INTEL_DEBUG & DEBUG_PERF))
+ fprintf(stderr, "%s fail %p %p (0x%08x)\n",
+ __func__, intelImage->mt, irb, internalFormat);
+ return false;
+ }
+
+ /* account for view parameters and face index */
+ int dst_level = intelImage->base.Base.Level +
+ intelImage->base.Base.TexObject->MinLevel;
+ int dst_slice = slice + intelImage->base.Base.Face +
+ intelImage->base.Base.TexObject->MinLayer;
+
+ _mesa_unlock_texture(&brw->ctx, intelImage->base.Base.TexObject);
+
+ /* blit from src buffer to texture */
+ ret = intel_miptree_blit(brw,
+ irb->mt, irb->mt_level, irb->mt_layer,
+ x, y, irb->Base.Base.Name == 0,
+ intelImage->mt, dst_level, dst_slice,
+ dstx, dsty, false,
+ width, height, GL_COPY);
+
+ _mesa_lock_texture(&brw->ctx, intelImage->base.Base.TexObject);
+
+ return ret;
+}
+
+
+static void
+intelCopyTexSubImage(struct gl_context *ctx, GLuint dims,
+ struct gl_texture_image *texImage,
+ GLint xoffset, GLint yoffset, GLint slice,
+ struct gl_renderbuffer *rb,
+ GLint x, GLint y,
+ GLsizei width, GLsizei height)
+{
+ struct brw_context *brw = brw_context(ctx);
+
+ /* Try BLORP first. It can handle almost everything. */
+ if (brw_blorp_copytexsubimage(brw, rb, texImage, slice, x, y,
+ xoffset, yoffset, width, height))
+ return;
+
+ /* Next, try the BLT engine. */
+ if (intel_copy_texsubimage(brw,
+ intel_texture_image(texImage),
+ xoffset, yoffset, slice,
+ intel_renderbuffer(rb), x, y, width, height)) {
+ return;
+ }
+
+ /* Finally, fall back to meta. This will likely be slow. */
+ perf_debug("%s - fallback to swrast\n", __func__);
+ _mesa_meta_CopyTexSubImage(ctx, dims, texImage,
+ xoffset, yoffset, slice,
+ rb, x, y, width, height);
+}
+
+
+void
+intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
+{
+ functions->CopyTexSubImage = intelCopyTexSubImage;
+}
projects / mesa.git / blobdiff