summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_mipmap_tree.c')
-rw-r--r--src/mesa/drivers/dri/intel/intel_mipmap_tree.c492
1 files changed, 492 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_mipmap_tree.c b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
new file mode 100644
index 00000000000..bf1c3f03f0e
--- /dev/null
+++ b/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
@@ -0,0 +1,492 @@
+/**************************************************************************
+ *
+ * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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 "intel_context.h"
+#include "intel_mipmap_tree.h"
+#include "intel_regions.h"
+#include "intel_chipset.h"
+#include "main/enums.h"
+
+#define FILE_DEBUG_FLAG DEBUG_MIPTREE
+
+static GLenum
+target_to_target(GLenum target)
+{
+ switch (target) {
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
+ return GL_TEXTURE_CUBE_MAP_ARB;
+ default:
+ return target;
+ }
+}
+
+static struct intel_mipmap_tree *
+intel_miptree_create_internal(struct intel_context *intel,
+ GLenum target,
+ GLenum internal_format,
+ GLuint first_level,
+ GLuint last_level,
+ GLuint width0,
+ GLuint height0,
+ GLuint depth0, GLuint cpp, GLuint compress_byte)
+{
+ GLboolean ok;
+ struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
+
+ DBG("%s target %s format %s level %d..%d\n", __FUNCTION__,
+ _mesa_lookup_enum_by_nr(target),
+ _mesa_lookup_enum_by_nr(internal_format), first_level, last_level);
+
+ mt->target = target_to_target(target);
+ mt->internal_format = internal_format;
+ mt->first_level = first_level;
+ mt->last_level = last_level;
+ mt->width0 = width0;
+ mt->height0 = height0;
+ mt->depth0 = depth0;
+ mt->cpp = compress_byte ? compress_byte : cpp;
+ mt->compressed = compress_byte ? 1 : 0;
+ mt->refcount = 1;
+ mt->pitch = 0;
+
+#ifdef I915
+ if (IS_945(intel->intelScreen->deviceID))
+ ok = i945_miptree_layout(intel, mt);
+ else
+ ok = i915_miptree_layout(intel, mt);
+#else
+ ok = brw_miptree_layout(intel, mt);
+#endif
+
+ if (!ok) {
+ free(mt);
+ return NULL;
+ }
+
+ return mt;
+}
+
+struct intel_mipmap_tree *
+intel_miptree_create(struct intel_context *intel,
+ GLenum target,
+ GLenum internal_format,
+ GLuint first_level,
+ GLuint last_level,
+ GLuint width0,
+ GLuint height0,
+ GLuint depth0, GLuint cpp, GLuint compress_byte)
+{
+ struct intel_mipmap_tree *mt;
+
+ mt = intel_miptree_create_internal(intel, target, internal_format,
+ first_level, last_level, width0,
+ height0, depth0, cpp, compress_byte);
+ /*
+ * pitch == 0 || height == 0 indicates the null texture
+ */
+ if (!mt || !mt->pitch || !mt->total_height)
+ return NULL;
+
+ mt->region = intel_region_alloc(intel,
+ mt->cpp,
+ mt->pitch,
+ mt->total_height,
+ mt->pitch);
+
+ if (!mt->region) {
+ free(mt);
+ return NULL;
+ }
+
+ return mt;
+}
+
+struct intel_mipmap_tree *
+intel_miptree_create_for_region(struct intel_context *intel,
+ GLenum target,
+ GLenum internal_format,
+ GLuint first_level,
+ GLuint last_level,
+ struct intel_region *region,
+ GLuint depth0,
+ GLuint compress_byte)
+{
+ struct intel_mipmap_tree *mt;
+
+ mt = intel_miptree_create_internal(intel, target, internal_format,
+ first_level, last_level,
+ region->width, region->height, 1,
+ region->cpp, compress_byte);
+ if (!mt)
+ return mt;
+#if 0
+ if (mt->pitch != region->pitch) {
+ fprintf(stderr,
+ "region pitch (%d) doesn't match mipmap tree pitch (%d)\n",
+ region->pitch, mt->pitch);
+ free(mt);
+ return NULL;
+ }
+#else
+ /* The mipmap tree pitch is aligned to 64 bytes to make sure render
+ * to texture works, but we don't need that for texturing from a
+ * pixmap. Just override it here. */
+ mt->pitch = region->pitch;
+#endif
+
+ intel_region_reference(&mt->region, region);
+
+ return mt;
+ }
+
+/**
+ * intel_miptree_pitch_align:
+ *
+ * @intel: intel context pointer
+ *
+ * @mt: the miptree to compute pitch alignment for
+ *
+ * @pitch: the natural pitch value
+ *
+ * Given @pitch, compute a larger value which accounts for
+ * any necessary alignment required by the device
+ */
+
+int intel_miptree_pitch_align (struct intel_context *intel,
+ struct intel_mipmap_tree *mt,
+ int pitch)
+{
+#ifdef I915
+ GLcontext *ctx = &intel->ctx;
+#endif
+
+ if (!mt->compressed) {
+ int pitch_align;
+
+ if (intel->ttm) {
+ /* XXX: Align pitch to multiple of 64 bytes for now to allow
+ * render-to-texture to work in all cases. This should probably be
+ * replaced at some point by some scheme to only do this when really
+ * necessary.
+ */
+ pitch_align = 64;
+ } else {
+ pitch_align = 4;
+ }
+
+ pitch = ALIGN(pitch * mt->cpp, pitch_align);
+
+#ifdef I915
+ /* XXX: At least the i915 seems very upset when the pitch is a multiple
+ * of 1024 and sometimes 512 bytes - performance can drop by several
+ * times. Go to the next multiple of the required alignment for now.
+ */
+ if (!(pitch & 511) &&
+ (pitch + pitch_align) < (1 << ctx->Const.MaxTextureLevels))
+ pitch += pitch_align;
+#endif
+
+ pitch /= mt->cpp;
+ }
+ return pitch;
+}
+
+void
+intel_miptree_reference(struct intel_mipmap_tree **dst,
+ struct intel_mipmap_tree *src)
+{
+ src->refcount++;
+ *dst = src;
+ DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
+}
+
+void
+intel_miptree_release(struct intel_context *intel,
+ struct intel_mipmap_tree **mt)
+{
+ if (!*mt)
+ return;
+
+ DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
+ if (--(*mt)->refcount <= 0) {
+ GLuint i;
+
+ DBG("%s deleting %p\n", __FUNCTION__, *mt);
+
+ intel_region_release(&((*mt)->region));
+
+ for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
+ if ((*mt)->level[i].image_offset)
+ free((*mt)->level[i].image_offset);
+
+ free(*mt);
+ }
+ *mt = NULL;
+}
+
+
+
+
+/* Can the image be pulled into a unified mipmap tree. This mirrors
+ * the completeness test in a lot of ways.
+ *
+ * Not sure whether I want to pass gl_texture_image here.
+ */
+GLboolean
+intel_miptree_match_image(struct intel_mipmap_tree *mt,
+ struct gl_texture_image *image,
+ GLuint face, GLuint level)
+{
+ /* Images with borders are never pulled into mipmap trees.
+ */
+ if (image->Border ||
+ ((image->_BaseFormat == GL_DEPTH_COMPONENT) &&
+ ((image->TexObject->WrapS == GL_CLAMP_TO_BORDER) ||
+ (image->TexObject->WrapT == GL_CLAMP_TO_BORDER))))
+ return GL_FALSE;
+
+ if (image->InternalFormat != mt->internal_format ||
+ image->IsCompressed != mt->compressed)
+ return GL_FALSE;
+
+ if (!image->IsCompressed &&
+ !mt->compressed &&
+ image->TexFormat->TexelBytes != mt->cpp)
+ return GL_FALSE;
+
+ /* Test image dimensions against the base level image adjusted for
+ * minification. This will also catch images not present in the
+ * tree, changed targets, etc.
+ */
+ if (image->Width != mt->level[level].width ||
+ image->Height != mt->level[level].height ||
+ image->Depth != mt->level[level].depth)
+ return GL_FALSE;
+
+ return GL_TRUE;
+}
+
+
+void
+intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
+ GLuint level,
+ GLuint nr_images,
+ GLuint x, GLuint y,
+ GLuint w, GLuint h, GLuint d)
+{
+ mt->level[level].width = w;
+ mt->level[level].height = h;
+ mt->level[level].depth = d;
+ mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
+ mt->level[level].nr_images = nr_images;
+
+ DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
+ level, w, h, d, x, y, mt->level[level].level_offset);
+
+ /* Not sure when this would happen, but anyway:
+ */
+ if (mt->level[level].image_offset) {
+ free(mt->level[level].image_offset);
+ mt->level[level].image_offset = NULL;
+ }
+
+ assert(nr_images);
+
+ mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
+ mt->level[level].image_offset[0] = 0;
+}
+
+
+
+void
+intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
+ GLuint level, GLuint img,
+ GLuint x, GLuint y)
+{
+ if (img == 0 && level == 0)
+ assert(x == 0 && y == 0);
+
+ assert(img < mt->level[level].nr_images);
+
+ mt->level[level].image_offset[img] = (x + y * mt->pitch) * mt->cpp;
+
+ DBG("%s level %d img %d pos %d,%d image_offset %x\n",
+ __FUNCTION__, level, img, x, y, mt->level[level].image_offset[img]);
+}
+
+
+/* Although we use the image_offset[] array to store relative offsets
+ * to cube faces, Mesa doesn't know anything about this and expects
+ * each cube face to be treated as a separate image.
+ *
+ * These functions present that view to mesa:
+ */
+const GLuint *
+intel_miptree_depth_offsets(struct intel_mipmap_tree *mt, GLuint level)
+{
+ static const GLuint zero = 0;
+
+ if (mt->target != GL_TEXTURE_3D || mt->level[level].nr_images == 1)
+ return &zero;
+ else
+ return mt->level[level].image_offset;
+}
+
+
+GLuint
+intel_miptree_image_offset(struct intel_mipmap_tree *mt,
+ GLuint face, GLuint level)
+{
+ if (mt->target == GL_TEXTURE_CUBE_MAP_ARB)
+ return (mt->level[level].level_offset +
+ mt->level[level].image_offset[face]);
+ else
+ return mt->level[level].level_offset;
+}
+
+
+
+/**
+ * Map a teximage in a mipmap tree.
+ * \param row_stride returns row stride in bytes
+ * \param image_stride returns image stride in bytes (for 3D textures).
+ * \param image_offsets pointer to array of pixel offsets from the returned
+ * pointer to each depth image
+ * \return address of mapping
+ */
+GLubyte *
+intel_miptree_image_map(struct intel_context * intel,
+ struct intel_mipmap_tree * mt,
+ GLuint face,
+ GLuint level,
+ GLuint * row_stride, GLuint * image_offsets)
+{
+ DBG("%s \n", __FUNCTION__);
+
+ if (row_stride)
+ *row_stride = mt->pitch * mt->cpp;
+
+ if (mt->target == GL_TEXTURE_3D) {
+ int i;
+
+ for (i = 0; i < mt->level[level].depth; i++)
+ image_offsets[i] = mt->level[level].image_offset[i] / mt->cpp;
+ } else {
+ assert(mt->level[level].depth == 1);
+ assert(mt->target == GL_TEXTURE_CUBE_MAP ||
+ mt->level[level].image_offset[0] == 0);
+ image_offsets[0] = 0;
+ }
+
+ return (intel_region_map(intel, mt->region) +
+ intel_miptree_image_offset(mt, face, level));
+}
+
+void
+intel_miptree_image_unmap(struct intel_context *intel,
+ struct intel_mipmap_tree *mt)
+{
+ DBG("%s\n", __FUNCTION__);
+ intel_region_unmap(intel, mt->region);
+}
+
+
+
+/* Upload data for a particular image.
+ */
+void
+intel_miptree_image_data(struct intel_context *intel,
+ struct intel_mipmap_tree *dst,
+ GLuint face,
+ GLuint level,
+ void *src,
+ GLuint src_row_pitch,
+ GLuint src_image_pitch)
+{
+ GLuint depth = dst->level[level].depth;
+ GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
+ const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
+ GLuint i;
+ GLuint height = 0;
+
+ DBG("%s: %d/%d\n", __FUNCTION__, face, level);
+ for (i = 0; i < depth; i++) {
+ height = dst->level[level].height;
+ if(dst->compressed)
+ height = (height + 3) / 4;
+ intel_region_data(intel,
+ dst->region,
+ dst_offset + dst_depth_offset[i], /* dst_offset */
+ 0, 0, /* dstx, dsty */
+ src,
+ src_row_pitch,
+ 0, 0, /* source x, y */
+ dst->level[level].width, height); /* width, height */
+
+ src += src_image_pitch * dst->cpp;
+ }
+}
+
+extern GLuint intel_compressed_alignment(GLenum);
+/* Copy mipmap image between trees
+ */
+void
+intel_miptree_image_copy(struct intel_context *intel,
+ struct intel_mipmap_tree *dst,
+ GLuint face, GLuint level,
+ struct intel_mipmap_tree *src)
+{
+ GLuint width = src->level[level].width;
+ GLuint height = src->level[level].height;
+ GLuint depth = src->level[level].depth;
+ GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
+ GLuint src_offset = intel_miptree_image_offset(src, face, level);
+ const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
+ const GLuint *src_depth_offset = intel_miptree_depth_offsets(src, level);
+ GLuint i;
+
+ if (dst->compressed) {
+ GLuint alignment = intel_compressed_alignment(dst->internal_format);
+ height = (height + 3) / 4;
+ width = ((width + alignment - 1) & ~(alignment - 1));
+ }
+
+ for (i = 0; i < depth; i++) {
+ intel_region_copy(intel,
+ dst->region, dst_offset + dst_depth_offset[i],
+ 0,
+ 0,
+ src->region, src_offset + src_depth_offset[i],
+ 0, 0, width, height);
+ }
+
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-27 03:17:22 +0000