+++ /dev/null
-/**************************************************************************
- *
- * 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 "mtypes.h"
-#include "macros.h"
-
-#include "intel_context.h"
-#include "intel_mipmap_tree.h"
-#include "intel_tex.h"
-#include "bufmgr.h"
-
-/**
- * Compute which mipmap levels that really need to be sent to the hardware.
- * This depends on the base image size, GL_TEXTURE_MIN_LOD,
- * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
- */
-static void intel_calculate_first_last_level( struct intel_texture_object *intelObj )
-{
- struct gl_texture_object *tObj = &intelObj->base;
- const struct gl_texture_image * const baseImage =
- tObj->Image[0][tObj->BaseLevel];
-
- /* These must be signed values. MinLod and MaxLod can be negative numbers,
- * and having firstLevel and lastLevel as signed prevents the need for
- * extra sign checks.
- */
- int firstLevel;
- int lastLevel;
-
- /* Yes, this looks overly complicated, but it's all needed.
- */
- switch (tObj->Target) {
- case GL_TEXTURE_1D:
- case GL_TEXTURE_2D:
- case GL_TEXTURE_3D:
- case GL_TEXTURE_CUBE_MAP:
- if (tObj->MinFilter == GL_NEAREST || tObj->MinFilter == GL_LINEAR) {
- /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.
- */
- firstLevel = lastLevel = tObj->BaseLevel;
- }
- else {
- /* Currently not taking min/max lod into account here, those
- * values are programmed as sampler state elsewhere and we
- * upload the same mipmap levels regardless. Not sure if
- * this makes sense as it means it isn't possible for the app
- * to use min/max lod to reduce texture memory pressure:
- */
- firstLevel = tObj->BaseLevel;
- lastLevel = MIN2(tObj->BaseLevel + baseImage->MaxLog2,
- tObj->MaxLevel);
- lastLevel = MAX2(firstLevel, lastLevel); /* need at least one level */
- }
- break;
- case GL_TEXTURE_RECTANGLE_NV:
- case GL_TEXTURE_4D_SGIS:
- firstLevel = lastLevel = 0;
- break;
- default:
- return;
- }
-
- /* save these values */
- intelObj->firstLevel = firstLevel;
- intelObj->lastLevel = lastLevel;
-}
-
-static GLboolean copy_image_data_to_tree( struct intel_context *intel,
- struct intel_texture_object *intelObj,
- struct gl_texture_image *texImage,
- GLuint face,
- GLuint level)
-{
- return intel_miptree_image_data(intel,
- intelObj->mt,
- face,
- level,
- texImage->Data,
- texImage->RowStride,
- (texImage->RowStride *
- texImage->Height *
- texImage->TexFormat->TexelBytes));
-}
-
-static void intel_texture_invalidate( struct intel_texture_object *intelObj )
-{
- GLint nr_faces, face;
- intelObj->dirty = ~0;
-
- nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
- for (face = 0; face < nr_faces; face++)
- intelObj->dirty_images[face] = ~0;
-}
-
-static void intel_texture_invalidate_cb( struct intel_context *intel,
- void *ptr )
-{
- intel_texture_invalidate( (struct intel_texture_object *) ptr );
-}
-
-#include "texformat.h"
-static GLuint intel_compressed_num_bytes(GLenum mesaFormat)
-{
- GLuint bytes = 0;
-
- switch (mesaFormat) {
- case MESA_FORMAT_RGB_FXT1:
- case MESA_FORMAT_RGBA_FXT1:
- case MESA_FORMAT_RGB_DXT1:
- case MESA_FORMAT_RGBA_DXT1:
- bytes = 2;
- break;
-
- case MESA_FORMAT_RGBA_DXT3:
- case MESA_FORMAT_RGBA_DXT5:
- bytes = 4;
-
- default:
- break;
- }
-
- return bytes;
-}
-
-/*
- */
-GLuint intel_finalize_mipmap_tree( struct intel_context *intel,
- struct gl_texture_object *tObj )
-{
- struct intel_texture_object *intelObj = intel_texture_object(tObj);
- GLuint face, i;
- GLuint nr_faces = 0;
- struct gl_texture_image *firstImage;
- GLuint cpp = 0;
-
- if( tObj == intel->frame_buffer_texobj )
- return GL_FALSE;
-
- /* We know/require this is true by now:
- */
- assert(intelObj->base._Complete);
-
- /* What levels must the tree include at a minimum?
- */
- if (intelObj->dirty) {
- intel_calculate_first_last_level( intelObj );
-/* intel_miptree_destroy(intel, intelObj->mt); */
-/* intelObj->mt = NULL; */
- }
-
- firstImage = intelObj->base.Image[0][intelObj->firstLevel];
-
- /* Fallback case:
- */
- if (firstImage->Border) {
- if (intelObj->mt) {
- intel_miptree_destroy(intel, intelObj->mt);
- intelObj->mt = NULL;
- /* Set all images dirty:
- */
- intel_texture_invalidate(intelObj);
- }
- return GL_FALSE;
- }
-
-
-
- if (firstImage->IsCompressed) {
- cpp = intel_compressed_num_bytes(firstImage->TexFormat->MesaFormat);
- } else {
- cpp = firstImage->TexFormat->TexelBytes;
- }
-
- /* Check tree can hold all active levels. Check tree matches
- * target, imageFormat, etc.
- */
- if (intelObj->mt &&
- (intelObj->mt->target != intelObj->base.Target ||
- intelObj->mt->internal_format != firstImage->InternalFormat ||
- intelObj->mt->first_level != intelObj->firstLevel ||
- intelObj->mt->last_level != intelObj->lastLevel ||
- intelObj->mt->width0 != firstImage->Width ||
- intelObj->mt->height0 != firstImage->Height ||
- intelObj->mt->depth0 != firstImage->Depth ||
- intelObj->mt->cpp != cpp ||
- intelObj->mt->compressed != firstImage->IsCompressed))
- {
- intel_miptree_destroy(intel, intelObj->mt);
- intelObj->mt = NULL;
-
- /* Set all images dirty:
- */
- intel_texture_invalidate(intelObj);
- }
-
-
- /* May need to create a new tree:
- */
- if (!intelObj->mt) {
- intelObj->mt = intel_miptree_create(intel,
- intelObj->base.Target,
- firstImage->InternalFormat,
- intelObj->firstLevel,
- intelObj->lastLevel,
- firstImage->Width,
- firstImage->Height,
- firstImage->Depth,
- cpp,
- firstImage->IsCompressed);
-
- /* Tell the buffer manager that we will manage the backing
- * store, but we still want it to do fencing for us.
- */
- bmBufferSetInvalidateCB(intel,
- intelObj->mt->region->buffer,
- intel_texture_invalidate_cb,
- intelObj,
- GL_FALSE);
- }
-
- /* Pull in any images not in the object's tree:
- */
- if (intelObj->dirty) {
- nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
- for (face = 0; face < nr_faces; face++) {
- if (intelObj->dirty_images[face]) {
- for (i = intelObj->firstLevel; i <= intelObj->lastLevel; i++) {
- struct gl_texture_image *texImage = intelObj->base.Image[face][i];
-
- /* Need to import images in main memory or held in other trees.
- */
- if (intelObj->dirty_images[face] & (1<<i) &&
- texImage) {
-
- if (INTEL_DEBUG & DEBUG_TEXTURE)
- _mesa_printf("copy data from image %d (%p) into object miptree\n",
- i,
- texImage->Data);
-
- if (!copy_image_data_to_tree(intel,
- intelObj,
- texImage,
- face,
- i))
- return GL_FALSE;
-
- }
- }
- }
- }
-
- /* Only clear the dirty flags if everything went ok:
- */
- for (face = 0; face < nr_faces; face++) {
- intelObj->dirty_images[face] = 0;
- }
-
- intelObj->dirty = 0;
- }
-
- return GL_TRUE;
-}
projects / mesa.git / blobdiff