/**************************************************************************
- *
- * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ *
+ * Copyright 2008 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
* 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
+ * 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/imports.h"
+#include "main/errors.h"
+
#include "main/mipmap.h"
#include "main/teximage.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
-#include "util/u_format.h"
+#include "util/format/u_format.h"
#include "util/u_gen_mipmap.h"
#include "st_debug.h"
#include "st_context.h"
#include "st_texture.h"
+#include "st_util.h"
#include "st_gen_mipmap.h"
+#include "st_cb_bitmap.h"
#include "st_cb_texture.h"
-/**
- * one-time init for generate mipmap
- * XXX Note: there may be other times we need no-op/simple state like this.
- * In that case, some code refactoring would be good.
- */
-void
-st_init_generate_mipmap(struct st_context *st)
-{
- st->gen_mipmap = util_create_gen_mipmap(st->pipe, st->cso_context);
-}
-
-
-void
-st_destroy_generate_mipmap(struct st_context *st)
-{
- util_destroy_gen_mipmap(st->gen_mipmap);
- st->gen_mipmap = NULL;
-}
-
-
-/**
- * Generate mipmap levels using hardware rendering.
- * \return TRUE if successful, FALSE if not possible
- */
-static boolean
-st_render_mipmap(struct st_context *st,
- GLenum target,
- struct st_texture_object *stObj,
- uint baseLevel, uint lastLevel)
-{
- struct pipe_context *pipe = st->pipe;
- struct pipe_screen *screen = pipe->screen;
- struct pipe_sampler_view *psv = st_get_texture_sampler_view(stObj, pipe);
- const uint face = _mesa_tex_target_to_face(target);
-
- assert(psv->texture == stObj->pt);
-#if 0
- assert(target != GL_TEXTURE_3D); /* implemented but untested */
-#endif
-
- /* check if we can render in the texture's format */
- /* XXX should probably kill this and always use util_gen_mipmap
- since this implements a sw fallback as well */
- if (!screen->is_format_supported(screen, psv->format, psv->texture->target,
- 0, PIPE_BIND_RENDER_TARGET, 0)) {
- return FALSE;
- }
-
- util_gen_mipmap(st->gen_mipmap, psv, face, baseLevel, lastLevel,
- PIPE_TEX_FILTER_LINEAR);
-
- return TRUE;
-}
-
-
-/**
- * Helper function to decompress an image. The result is a 32-bpp RGBA
- * image with stride==width.
- */
-static void
-decompress_image(enum pipe_format format, int datatype,
- const uint8_t *src, void *dst,
- unsigned width, unsigned height, unsigned src_stride)
-{
- const struct util_format_description *desc = util_format_description(format);
- const uint bw = util_format_get_blockwidth(format);
- const uint bh = util_format_get_blockheight(format);
- uint dst_stride = 4 * MAX2(width, bw);
-
- if (datatype == GL_FLOAT) {
- desc->unpack_rgba_float((float *)dst, dst_stride * sizeof(GLfloat), src, src_stride, width, height);
- if (width < bw || height < bh) {
- float *dst_p = (float *)dst;
- /* We're decompressing an image smaller than the compression
- * block size. We don't want garbage pixel values in the region
- * outside (width x height) so replicate pixels from the (width
- * x height) region to fill out the (bw x bh) block size.
- */
- uint x, y;
- for (y = 0; y < bh; y++) {
- for (x = 0; x < bw; x++) {
- if (x >= width || y >= height) {
- uint p = (y * bw + x) * 4;
- dst_p[p + 0] = dst_p[0];
- dst_p[p + 1] = dst_p[1];
- dst_p[p + 2] = dst_p[2];
- dst_p[p + 3] = dst_p[3];
- }
- }
- }
- }
- } else {
- desc->unpack_rgba_8unorm((uint8_t *)dst, dst_stride, src, src_stride, width, height);
- if (width < bw || height < bh) {
- uint8_t *dst_p = (uint8_t *)dst;
- /* We're decompressing an image smaller than the compression
- * block size. We don't want garbage pixel values in the region
- * outside (width x height) so replicate pixels from the (width
- * x height) region to fill out the (bw x bh) block size.
- */
- uint x, y;
- for (y = 0; y < bh; y++) {
- for (x = 0; x < bw; x++) {
- if (x >= width || y >= height) {
- uint p = (y * bw + x) * 4;
- dst_p[p + 0] = dst_p[0];
- dst_p[p + 1] = dst_p[1];
- dst_p[p + 2] = dst_p[2];
- dst_p[p + 3] = dst_p[3];
- }
- }
- }
- }
- }
-}
-
-/**
- * Helper function to compress an image. The source is a 32-bpp RGBA image
- * with stride==width.
- */
-static void
-compress_image(enum pipe_format format, int datatype,
- const void *src, uint8_t *dst,
- unsigned width, unsigned height, unsigned dst_stride)
-{
- const struct util_format_description *desc = util_format_description(format);
- const uint src_stride = 4 * width;
-
- if (datatype == GL_FLOAT)
- desc->pack_rgba_float(dst, dst_stride, (GLfloat *)src, src_stride * sizeof(GLfloat), width, height);
- else
- desc->pack_rgba_8unorm(dst, dst_stride, (uint8_t *)src, src_stride, width, height);
-}
-
-
-/**
- * Software fallback for generate mipmap levels.
- */
-static void
-fallback_generate_mipmap(struct gl_context *ctx, GLenum target,
- struct gl_texture_object *texObj)
-{
- struct pipe_context *pipe = st_context(ctx)->pipe;
- struct pipe_resource *pt = st_get_texobj_resource(texObj);
- const uint baseLevel = texObj->BaseLevel;
- const uint lastLevel = pt->last_level;
- const uint face = _mesa_tex_target_to_face(target);
- uint dstLevel;
- GLenum datatype;
- GLuint comps;
- GLboolean compressed;
-
- if (ST_DEBUG & DEBUG_FALLBACK)
- debug_printf("%s: fallback processing\n", __FUNCTION__);
-
- assert(target != GL_TEXTURE_3D); /* not done yet */
-
- compressed =
- _mesa_is_format_compressed(texObj->Image[face][baseLevel]->TexFormat);
-
- if (compressed) {
- if (texObj->Image[face][baseLevel]->TexFormat == MESA_FORMAT_SIGNED_RED_RGTC1 ||
- texObj->Image[face][baseLevel]->TexFormat == MESA_FORMAT_SIGNED_RG_RGTC2)
- datatype = GL_FLOAT;
- else
- datatype = GL_UNSIGNED_BYTE;
-
- comps = 4;
- }
- else {
- _mesa_format_to_type_and_comps(texObj->Image[face][baseLevel]->TexFormat,
- &datatype, &comps);
- assert(comps > 0 && "bad texture format in fallback_generate_mipmap()");
- }
-
- for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
- const uint srcLevel = dstLevel - 1;
- const uint srcWidth = u_minify(pt->width0, srcLevel);
- const uint srcHeight = u_minify(pt->height0, srcLevel);
- const uint srcDepth = u_minify(pt->depth0, srcLevel);
- const uint dstWidth = u_minify(pt->width0, dstLevel);
- const uint dstHeight = u_minify(pt->height0, dstLevel);
- const uint dstDepth = u_minify(pt->depth0, dstLevel);
- struct pipe_transfer *srcTrans, *dstTrans;
- const ubyte *srcData;
- ubyte *dstData;
- int srcStride, dstStride;
-
- srcTrans = pipe_get_transfer(st_context(ctx)->pipe, pt, srcLevel,
- face,
- PIPE_TRANSFER_READ, 0, 0,
- srcWidth, srcHeight);
-
- dstTrans = pipe_get_transfer(st_context(ctx)->pipe, pt, dstLevel,
- face,
- PIPE_TRANSFER_WRITE, 0, 0,
- dstWidth, dstHeight);
-
- srcData = (ubyte *) pipe_transfer_map(pipe, srcTrans);
- dstData = (ubyte *) pipe_transfer_map(pipe, dstTrans);
-
- srcStride = srcTrans->stride / util_format_get_blocksize(srcTrans->resource->format);
- dstStride = dstTrans->stride / util_format_get_blocksize(dstTrans->resource->format);
-
- /* this cannot work correctly for 3d since it does
- not respect layerStride. */
- if (compressed) {
- const enum pipe_format format = pt->format;
- const uint bw = util_format_get_blockwidth(format);
- const uint bh = util_format_get_blockheight(format);
- const uint srcWidth2 = align(srcWidth, bw);
- const uint srcHeight2 = align(srcHeight, bh);
- const uint dstWidth2 = align(dstWidth, bw);
- const uint dstHeight2 = align(dstHeight, bh);
- uint8_t *srcTemp, *dstTemp;
-
- assert(comps == 4);
-
- srcTemp = malloc(srcWidth2 * srcHeight2 * comps * (datatype == GL_FLOAT ? 4 : 1));
- dstTemp = malloc(dstWidth2 * dstHeight2 * comps * (datatype == GL_FLOAT ? 4 : 1));
-
- /* decompress the src image: srcData -> srcTemp */
- decompress_image(format, datatype, srcData, srcTemp, srcWidth, srcHeight, srcTrans->stride);
-
- _mesa_generate_mipmap_level(target, datatype, comps,
- 0 /*border*/,
- srcWidth2, srcHeight2, srcDepth,
- srcTemp,
- srcWidth2, /* stride in texels */
- dstWidth2, dstHeight2, dstDepth,
- dstTemp,
- dstWidth2); /* stride in texels */
-
- /* compress the new image: dstTemp -> dstData */
- compress_image(format, datatype, dstTemp, dstData, dstWidth, dstHeight, dstTrans->stride);
-
- free(srcTemp);
- free(dstTemp);
- }
- else {
- _mesa_generate_mipmap_level(target, datatype, comps,
- 0 /*border*/,
- srcWidth, srcHeight, srcDepth,
- srcData,
- srcStride, /* stride in texels */
- dstWidth, dstHeight, dstDepth,
- dstData,
- dstStride); /* stride in texels */
- }
-
- pipe_transfer_unmap(pipe, srcTrans);
- pipe_transfer_unmap(pipe, dstTrans);
-
- pipe->transfer_destroy(pipe, srcTrans);
- pipe->transfer_destroy(pipe, dstTrans);
- }
-}
-
-
-/**
- * Compute the expected number of mipmap levels in the texture given
- * the width/height/depth of the base image and the GL_TEXTURE_BASE_LEVEL/
- * GL_TEXTURE_MAX_LEVEL settings. This will tell us how many mipmap
- * levels should be generated.
- */
-static GLuint
-compute_num_levels(struct gl_context *ctx,
- struct gl_texture_object *texObj,
- GLenum target)
-{
- if (target == GL_TEXTURE_RECTANGLE_ARB) {
- return 1;
- }
- else {
- const struct gl_texture_image *baseImage =
- _mesa_get_tex_image(ctx, texObj, target, texObj->BaseLevel);
- GLuint size, numLevels;
-
- size = MAX2(baseImage->Width2, baseImage->Height2);
- size = MAX2(size, baseImage->Depth2);
-
- numLevels = texObj->BaseLevel;
-
- while (size > 0) {
- numLevels++;
- size >>= 1;
- }
-
- numLevels = MIN2(numLevels, texObj->MaxLevel + 1);
-
- assert(numLevels >= 1);
-
- return numLevels;
- }
-}
-
-
/**
* Called via ctx->Driver.GenerateMipmap().
*/
struct st_context *st = st_context(ctx);
struct st_texture_object *stObj = st_texture_object(texObj);
struct pipe_resource *pt = st_get_texobj_resource(texObj);
- const uint baseLevel = texObj->BaseLevel;
- uint lastLevel;
- uint dstLevel;
+ uint baseLevel = texObj->BaseLevel;
+ enum pipe_format format;
+ uint lastLevel, first_layer, last_layer;
if (!pt)
return;
+ if (texObj->Immutable)
+ baseLevel += texObj->MinLevel;
+
/* not sure if this ultimately actually should work,
but we're not supporting multisampled textures yet. */
assert(pt->nr_samples < 2);
/* find expected last mipmap level to generate*/
- lastLevel = compute_num_levels(ctx, texObj, target) - 1;
+ lastLevel = _mesa_compute_num_levels(ctx, texObj, target) - 1;
+
+ if (texObj->Immutable)
+ lastLevel += texObj->MinLevel;
if (lastLevel == 0)
return;
+ st_flush_bitmap_cache(st);
+ st_invalidate_readpix_cache(st);
+
/* The texture isn't in a "complete" state yet so set the expected
* lastLevel here, since it won't get done in st_finalize_texture().
*/
stObj->lastLevel = lastLevel;
- if (pt->last_level < lastLevel) {
- /* The current gallium texture doesn't have space for all the
- * mipmap levels we need to generate. So allocate a new texture.
+ if (!texObj->Immutable) {
+ const GLboolean genSave = texObj->GenerateMipmap;
+
+ /* Temporarily set GenerateMipmap to true so that allocate_full_mipmap()
+ * makes the right decision about full mipmap allocation.
*/
- struct pipe_resource *oldTex = stObj->pt;
+ texObj->GenerateMipmap = GL_TRUE;
- /* create new texture with space for more levels */
- stObj->pt = st_texture_create(st,
- oldTex->target,
- oldTex->format,
- lastLevel,
- oldTex->width0,
- oldTex->height0,
- oldTex->depth0,
- oldTex->array_size,
- oldTex->bind);
+ _mesa_prepare_mipmap_levels(ctx, texObj, baseLevel, lastLevel);
- /* This will copy the old texture's base image into the new texture
- * which we just allocated.
- */
- st_finalize_texture(ctx, st->pipe, texObj);
+ texObj->GenerateMipmap = genSave;
- /* release the old tex (will likely be freed too) */
- pipe_resource_reference(&oldTex, NULL);
- pipe_sampler_view_reference(&stObj->sampler_view, NULL);
- }
- else {
- /* Make sure that the base texture image data is present in the
- * texture buffer.
+ /* At this point, memory for all the texture levels has been
+ * allocated. However, the base level image may be in one resource
+ * while the subsequent/smaller levels may be in another resource.
+ * Finalizing the texture will copy the base images from the former
+ * resource to the latter.
+ *
+ * After this, we'll have all mipmap levels in one resource.
*/
- st_finalize_texture(ctx, st->pipe, texObj);
+ st_finalize_texture(ctx, st->pipe, texObj, 0);
}
pt = stObj->pt;
+ if (!pt) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "mipmap generation");
+ return;
+ }
assert(pt->last_level >= lastLevel);
- /* Try to generate the mipmap by rendering/texturing. If that fails,
- * use the software fallback.
- */
- if (!st_render_mipmap(st, target, stObj, baseLevel, lastLevel)) {
- /* since the util code actually also has a fallback, should
- probably make it never fail and kill this */
- fallback_generate_mipmap(ctx, target, texObj);
+ if (pt->target == PIPE_TEXTURE_CUBE) {
+ first_layer = last_layer = _mesa_tex_target_to_face(target);
+ }
+ else {
+ first_layer = 0;
+ last_layer = util_max_layer(pt, baseLevel);
}
- /* Fill in the Mesa gl_texture_image fields */
- for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
- const uint srcLevel = dstLevel - 1;
- const struct gl_texture_image *srcImage
- = _mesa_get_tex_image(ctx, texObj, target, srcLevel);
- struct gl_texture_image *dstImage;
- struct st_texture_image *stImage;
- uint dstWidth = u_minify(pt->width0, dstLevel);
- uint dstHeight = u_minify(pt->height0, dstLevel);
- uint dstDepth = u_minify(pt->depth0, dstLevel);
- uint border = srcImage->Border;
-
- dstImage = _mesa_get_tex_image(ctx, texObj, target, dstLevel);
- if (!dstImage) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
- return;
- }
-
- /* Free old image data */
- if (dstImage->Data)
- ctx->Driver.FreeTexImageData(ctx, dstImage);
-
- /* initialize new image */
- _mesa_init_teximage_fields(ctx, target, dstImage, dstWidth, dstHeight,
- dstDepth, border, srcImage->InternalFormat,
- srcImage->TexFormat);
+ if (stObj->surface_based)
+ format = stObj->surface_format;
+ else
+ format = pt->format;
- stImage = st_texture_image(dstImage);
- stImage->level = dstLevel;
+ if (texObj->Sampler.sRGBDecode == GL_SKIP_DECODE_EXT)
+ format = util_format_linear(format);
- pipe_resource_reference(&stImage->pt, pt);
+ /* First see if the driver supports hardware mipmap generation,
+ * if not then generate the mipmap by rendering/texturing.
+ * If that fails, use the software fallback.
+ */
+ if (!st->pipe->screen->get_param(st->pipe->screen,
+ PIPE_CAP_GENERATE_MIPMAP) ||
+ !st->pipe->generate_mipmap(st->pipe, pt, format, baseLevel,
+ lastLevel, first_layer, last_layer)) {
+
+ if (!util_gen_mipmap(st->pipe, pt, format, baseLevel, lastLevel,
+ first_layer, last_layer, PIPE_TEX_FILTER_LINEAR)) {
+ _mesa_generate_mipmap(ctx, target, texObj);
+ }
}
}
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