68f8cf7263
All driver implementations of FreeTextureImageBuffer already check
that Data != NULL and free it. However, this means that we will also
free driver storage if the driver storage wasn't in the form of a Data
pointer.
This was produced by the following semantic patch:
@@
expression C;
expression T;
@@
- if (T->Data) {
- C->Driver.FreeTextureImageBuffer(C, T);
+ C->Driver.FreeTextureImageBuffer(C, T);
- }
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
459 lines
16 KiB
C
459 lines
16 KiB
C
/**************************************************************************
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*
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* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "main/imports.h"
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#include "main/mipmap.h"
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#include "main/teximage.h"
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "util/u_inlines.h"
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#include "util/u_format.h"
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#include "util/u_gen_mipmap.h"
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#include "st_debug.h"
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#include "st_context.h"
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#include "st_texture.h"
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#include "st_gen_mipmap.h"
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#include "st_cb_texture.h"
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/**
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* one-time init for generate mipmap
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* XXX Note: there may be other times we need no-op/simple state like this.
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* In that case, some code refactoring would be good.
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*/
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void
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st_init_generate_mipmap(struct st_context *st)
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{
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st->gen_mipmap = util_create_gen_mipmap(st->pipe, st->cso_context);
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}
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void
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st_destroy_generate_mipmap(struct st_context *st)
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{
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util_destroy_gen_mipmap(st->gen_mipmap);
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st->gen_mipmap = NULL;
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}
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/**
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* Generate mipmap levels using hardware rendering.
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* \return TRUE if successful, FALSE if not possible
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*/
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static boolean
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st_render_mipmap(struct st_context *st,
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GLenum target,
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struct st_texture_object *stObj,
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uint baseLevel, uint lastLevel)
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{
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struct pipe_context *pipe = st->pipe;
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struct pipe_screen *screen = pipe->screen;
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struct pipe_sampler_view *psv = st_get_texture_sampler_view(stObj, pipe);
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const uint face = _mesa_tex_target_to_face(target);
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assert(psv->texture == stObj->pt);
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#if 0
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assert(target != GL_TEXTURE_3D); /* implemented but untested */
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#endif
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/* check if we can render in the texture's format */
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/* XXX should probably kill this and always use util_gen_mipmap
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since this implements a sw fallback as well */
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if (!screen->is_format_supported(screen, psv->format, psv->texture->target,
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0, PIPE_BIND_RENDER_TARGET)) {
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return FALSE;
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}
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/* Disable conditional rendering. */
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if (st->render_condition) {
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pipe->render_condition(pipe, NULL, 0);
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}
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util_gen_mipmap(st->gen_mipmap, psv, face, baseLevel, lastLevel,
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PIPE_TEX_FILTER_LINEAR);
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if (st->render_condition) {
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pipe->render_condition(pipe, st->render_condition, st->condition_mode);
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}
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return TRUE;
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}
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/**
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* Helper function to decompress an image. The result is a 32-bpp RGBA
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* image with stride==width.
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*/
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static void
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decompress_image(enum pipe_format format, int datatype,
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const uint8_t *src, void *dst,
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unsigned width, unsigned height, unsigned src_stride)
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{
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const struct util_format_description *desc = util_format_description(format);
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const uint bw = util_format_get_blockwidth(format);
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const uint bh = util_format_get_blockheight(format);
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uint dst_stride = 4 * MAX2(width, bw);
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if (datatype == GL_FLOAT) {
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desc->unpack_rgba_float((float *)dst, dst_stride * sizeof(GLfloat), src, src_stride, width, height);
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if (width < bw || height < bh) {
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float *dst_p = (float *)dst;
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/* We're decompressing an image smaller than the compression
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* block size. We don't want garbage pixel values in the region
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* outside (width x height) so replicate pixels from the (width
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* x height) region to fill out the (bw x bh) block size.
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*/
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uint x, y;
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for (y = 0; y < bh; y++) {
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for (x = 0; x < bw; x++) {
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if (x >= width || y >= height) {
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uint p = (y * bw + x) * 4;
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dst_p[p + 0] = dst_p[0];
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dst_p[p + 1] = dst_p[1];
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dst_p[p + 2] = dst_p[2];
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dst_p[p + 3] = dst_p[3];
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}
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}
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}
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}
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} else {
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desc->unpack_rgba_8unorm((uint8_t *)dst, dst_stride, src, src_stride, width, height);
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if (width < bw || height < bh) {
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uint8_t *dst_p = (uint8_t *)dst;
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/* We're decompressing an image smaller than the compression
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* block size. We don't want garbage pixel values in the region
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* outside (width x height) so replicate pixels from the (width
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* x height) region to fill out the (bw x bh) block size.
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*/
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uint x, y;
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for (y = 0; y < bh; y++) {
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for (x = 0; x < bw; x++) {
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if (x >= width || y >= height) {
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uint p = (y * bw + x) * 4;
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dst_p[p + 0] = dst_p[0];
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dst_p[p + 1] = dst_p[1];
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dst_p[p + 2] = dst_p[2];
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dst_p[p + 3] = dst_p[3];
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}
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}
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}
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}
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}
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}
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/**
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* Helper function to compress an image. The source is a 32-bpp RGBA image
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* with stride==width.
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*/
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static void
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compress_image(enum pipe_format format, int datatype,
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const void *src, uint8_t *dst,
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unsigned width, unsigned height, unsigned dst_stride)
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{
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const struct util_format_description *desc = util_format_description(format);
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const uint src_stride = 4 * width;
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if (datatype == GL_FLOAT)
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desc->pack_rgba_float(dst, dst_stride, (GLfloat *)src, src_stride * sizeof(GLfloat), width, height);
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else
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desc->pack_rgba_8unorm(dst, dst_stride, (uint8_t *)src, src_stride, width, height);
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}
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/**
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* Software fallback for generate mipmap levels.
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*/
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static void
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fallback_generate_mipmap(struct gl_context *ctx, GLenum target,
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struct gl_texture_object *texObj)
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{
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struct pipe_context *pipe = st_context(ctx)->pipe;
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struct pipe_resource *pt = st_get_texobj_resource(texObj);
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const uint baseLevel = texObj->BaseLevel;
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const uint lastLevel = pt->last_level;
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const uint face = _mesa_tex_target_to_face(target);
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uint dstLevel;
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GLenum datatype;
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GLuint comps;
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GLboolean compressed;
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if (ST_DEBUG & DEBUG_FALLBACK)
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debug_printf("%s: fallback processing\n", __FUNCTION__);
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assert(target != GL_TEXTURE_3D); /* not done yet */
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compressed =
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_mesa_is_format_compressed(texObj->Image[face][baseLevel]->TexFormat);
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if (compressed) {
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GLenum type =
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_mesa_get_format_datatype(texObj->Image[face][baseLevel]->TexFormat);
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datatype = type == GL_UNSIGNED_NORMALIZED ? GL_UNSIGNED_BYTE : GL_FLOAT;
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comps = 4;
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}
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else {
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_mesa_format_to_type_and_comps(texObj->Image[face][baseLevel]->TexFormat,
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&datatype, &comps);
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assert(comps > 0 && "bad texture format in fallback_generate_mipmap()");
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}
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for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
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const uint srcLevel = dstLevel - 1;
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const uint srcWidth = u_minify(pt->width0, srcLevel);
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const uint srcHeight = u_minify(pt->height0, srcLevel);
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const uint srcDepth = u_minify(pt->depth0, srcLevel);
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const uint dstWidth = u_minify(pt->width0, dstLevel);
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const uint dstHeight = u_minify(pt->height0, dstLevel);
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const uint dstDepth = u_minify(pt->depth0, dstLevel);
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struct pipe_transfer *srcTrans, *dstTrans;
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const ubyte *srcData;
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ubyte *dstData;
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int srcStride, dstStride;
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srcTrans = pipe_get_transfer(pipe, pt, srcLevel,
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face,
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PIPE_TRANSFER_READ, 0, 0,
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srcWidth, srcHeight);
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dstTrans = pipe_get_transfer(pipe, pt, dstLevel,
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face,
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PIPE_TRANSFER_WRITE, 0, 0,
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dstWidth, dstHeight);
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srcData = (ubyte *) pipe_transfer_map(pipe, srcTrans);
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dstData = (ubyte *) pipe_transfer_map(pipe, dstTrans);
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srcStride = srcTrans->stride / util_format_get_blocksize(srcTrans->resource->format);
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dstStride = dstTrans->stride / util_format_get_blocksize(dstTrans->resource->format);
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/* this cannot work correctly for 3d since it does
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not respect layerStride. */
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if (compressed) {
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const enum pipe_format format = pt->format;
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const uint bw = util_format_get_blockwidth(format);
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const uint bh = util_format_get_blockheight(format);
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const uint srcWidth2 = align(srcWidth, bw);
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const uint srcHeight2 = align(srcHeight, bh);
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const uint dstWidth2 = align(dstWidth, bw);
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const uint dstHeight2 = align(dstHeight, bh);
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uint8_t *srcTemp, *dstTemp;
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assert(comps == 4);
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srcTemp = malloc(srcWidth2 * srcHeight2 * comps * (datatype == GL_FLOAT ? 4 : 1));
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dstTemp = malloc(dstWidth2 * dstHeight2 * comps * (datatype == GL_FLOAT ? 4 : 1));
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/* decompress the src image: srcData -> srcTemp */
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decompress_image(format, datatype, srcData, srcTemp, srcWidth2, srcHeight2, srcTrans->stride);
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_mesa_generate_mipmap_level(target, datatype, comps,
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0 /*border*/,
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srcWidth2, srcHeight2, srcDepth,
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srcTemp,
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srcWidth2, /* stride in texels */
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dstWidth2, dstHeight2, dstDepth,
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dstTemp,
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dstWidth2); /* stride in texels */
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/* compress the new image: dstTemp -> dstData */
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compress_image(format, datatype, dstTemp, dstData, dstWidth2, dstHeight2, dstTrans->stride);
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free(srcTemp);
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free(dstTemp);
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}
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else {
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_mesa_generate_mipmap_level(target, datatype, comps,
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0 /*border*/,
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srcWidth, srcHeight, srcDepth,
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srcData,
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srcStride, /* stride in texels */
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dstWidth, dstHeight, dstDepth,
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dstData,
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dstStride); /* stride in texels */
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}
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pipe_transfer_unmap(pipe, srcTrans);
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pipe_transfer_unmap(pipe, dstTrans);
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pipe->transfer_destroy(pipe, srcTrans);
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pipe->transfer_destroy(pipe, dstTrans);
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}
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}
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/**
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* Compute the expected number of mipmap levels in the texture given
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* the width/height/depth of the base image and the GL_TEXTURE_BASE_LEVEL/
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* GL_TEXTURE_MAX_LEVEL settings. This will tell us how many mipmap
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* levels should be generated.
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*/
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static GLuint
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compute_num_levels(struct gl_context *ctx,
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struct gl_texture_object *texObj,
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GLenum target)
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{
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if (target == GL_TEXTURE_RECTANGLE_ARB) {
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return 1;
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}
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else {
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const struct gl_texture_image *baseImage =
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_mesa_get_tex_image(ctx, texObj, target, texObj->BaseLevel);
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GLuint size, numLevels;
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size = MAX2(baseImage->Width2, baseImage->Height2);
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size = MAX2(size, baseImage->Depth2);
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numLevels = texObj->BaseLevel;
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while (size > 0) {
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numLevels++;
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size >>= 1;
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}
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numLevels = MIN2(numLevels, texObj->MaxLevel + 1);
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assert(numLevels >= 1);
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return numLevels;
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}
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}
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/**
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* Called via ctx->Driver.GenerateMipmap().
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*/
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void
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st_generate_mipmap(struct gl_context *ctx, GLenum target,
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struct gl_texture_object *texObj)
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{
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struct st_context *st = st_context(ctx);
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struct st_texture_object *stObj = st_texture_object(texObj);
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struct pipe_resource *pt = st_get_texobj_resource(texObj);
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const uint baseLevel = texObj->BaseLevel;
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uint lastLevel;
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uint dstLevel;
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if (!pt)
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return;
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/* not sure if this ultimately actually should work,
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but we're not supporting multisampled textures yet. */
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assert(pt->nr_samples < 2);
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/* find expected last mipmap level to generate*/
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lastLevel = compute_num_levels(ctx, texObj, target) - 1;
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if (lastLevel == 0)
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return;
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/* The texture isn't in a "complete" state yet so set the expected
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* lastLevel here, since it won't get done in st_finalize_texture().
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*/
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stObj->lastLevel = lastLevel;
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if (pt->last_level < lastLevel) {
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/* The current gallium texture doesn't have space for all the
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* mipmap levels we need to generate. So allocate a new texture.
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*/
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struct pipe_resource *oldTex = stObj->pt;
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/* create new texture with space for more levels */
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stObj->pt = st_texture_create(st,
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oldTex->target,
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oldTex->format,
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lastLevel,
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oldTex->width0,
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oldTex->height0,
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oldTex->depth0,
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oldTex->array_size,
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oldTex->bind);
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/* This will copy the old texture's base image into the new texture
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* which we just allocated.
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*/
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st_finalize_texture(ctx, st->pipe, texObj);
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/* release the old tex (will likely be freed too) */
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pipe_resource_reference(&oldTex, NULL);
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pipe_sampler_view_reference(&stObj->sampler_view, NULL);
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}
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else {
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/* Make sure that the base texture image data is present in the
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* texture buffer.
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*/
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st_finalize_texture(ctx, st->pipe, texObj);
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}
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pt = stObj->pt;
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assert(pt->last_level >= lastLevel);
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/* Try to generate the mipmap by rendering/texturing. If that fails,
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* use the software fallback.
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*/
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if (!st_render_mipmap(st, target, stObj, baseLevel, lastLevel)) {
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/* since the util code actually also has a fallback, should
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probably make it never fail and kill this */
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fallback_generate_mipmap(ctx, target, texObj);
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}
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/* Fill in the Mesa gl_texture_image fields */
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for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
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const uint srcLevel = dstLevel - 1;
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const struct gl_texture_image *srcImage
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= _mesa_get_tex_image(ctx, texObj, target, srcLevel);
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struct gl_texture_image *dstImage;
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struct st_texture_image *stImage;
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uint dstWidth = u_minify(pt->width0, dstLevel);
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uint dstHeight = u_minify(pt->height0, dstLevel);
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uint dstDepth = u_minify(pt->depth0, dstLevel);
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uint border = srcImage->Border;
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dstImage = _mesa_get_tex_image(ctx, texObj, target, dstLevel);
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if (!dstImage) {
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_mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
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return;
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}
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/* Free old image data */
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ctx->Driver.FreeTextureImageBuffer(ctx, dstImage);
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/* initialize new image */
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_mesa_init_teximage_fields(ctx, target, dstImage, dstWidth, dstHeight,
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dstDepth, border, srcImage->InternalFormat,
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srcImage->TexFormat);
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stImage = st_texture_image(dstImage);
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pipe_resource_reference(&stImage->pt, pt);
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}
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}
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