/**************************************************************************
*
* Copyright 2007 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 <stdio.h>
#include "st_context.h"
#include "st_format.h"
#include "st_texture.h"
#include "st_cb_fbo.h"
#include "main/enums.h"
#include "pipe/p_state.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "util/u_rect.h"
#include "util/u_math.h"
#define DBG if(0) printf
/**
* Allocate a new pipe_resource object
* width0, height0, depth0 are the dimensions of the level 0 image
* (the highest resolution). last_level indicates how many mipmap levels
* to allocate storage for. For non-mipmapped textures, this will be zero.
*/
struct pipe_resource *
st_texture_create(struct st_context *st,
enum pipe_texture_target target,
enum pipe_format format,
GLuint last_level,
GLuint width0,
GLuint height0,
GLuint depth0,
GLuint layers,
GLuint bind )
{
struct pipe_resource pt, *newtex;
struct pipe_screen *screen = st->pipe->screen;
assert(target < PIPE_MAX_TEXTURE_TYPES);
assert(width0 > 0);
assert(height0 > 0);
assert(depth0 > 0);
if (target == PIPE_TEXTURE_CUBE)
assert(layers == 6);
DBG("%s target %d format %s last_level %d\n", __FUNCTION__,
(int) target, util_format_name(format), last_level);
assert(format);
assert(screen->is_format_supported(screen, format, target, 0,
PIPE_BIND_SAMPLER_VIEW));
memset(&pt, 0, sizeof(pt));
pt.target = target;
pt.format = format;
pt.last_level = last_level;
pt.width0 = width0;
pt.height0 = height0;
pt.depth0 = depth0;
pt.array_size = (target == PIPE_TEXTURE_CUBE ? 6 : layers);
pt.usage = PIPE_USAGE_DEFAULT;
pt.bind = bind;
pt.flags = 0;
newtex = screen->resource_create(screen, &pt);
assert(!newtex || pipe_is_referenced(&newtex->reference));
return newtex;
}
/**
* In OpenGL the number of 1D array texture layers is the "height" and
* the number of 2D array texture layers is the "depth". In Gallium the
* number of layers in an array texture is a separate 'array_size' field.
* This function converts dimensions from the former to the later.
*/
void
st_gl_texture_dims_to_pipe_dims(GLenum texture,
GLuint widthIn,
GLuint heightIn,
GLuint depthIn,
GLuint *widthOut,
GLuint *heightOut,
GLuint *depthOut,
GLuint *layersOut)
{
switch (texture) {
case GL_TEXTURE_1D:
assert(heightIn == 1);
assert(depthIn == 1);
*widthOut = widthIn;
*heightOut = 1;
*depthOut = 1;
*layersOut = 1;
break;
case GL_TEXTURE_1D_ARRAY:
assert(depthIn == 1);
*widthOut = widthIn;
*heightOut = 1;
*depthOut = 1;
*layersOut = heightIn;
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_EXTERNAL_OES:
assert(depthIn == 1);
*widthOut = widthIn;
*heightOut = heightIn;
*depthOut = 1;
*layersOut = 1;
break;
case GL_TEXTURE_CUBE_MAP:
assert(depthIn == 1);
*widthOut = widthIn;
*heightOut = heightIn;
*depthOut = 1;
*layersOut = 6;
break;
case GL_TEXTURE_2D_ARRAY:
*widthOut = widthIn;
*heightOut = heightIn;
*depthOut = 1;
*layersOut = depthIn;
break;
default:
assert(0 && "Unexpected texture in st_gl_texture_dims_to_pipe_dims()");
/* fall-through */
case GL_TEXTURE_3D:
*widthOut = widthIn;
*heightOut = heightIn;
*depthOut = depthIn;
*layersOut = 1;
break;
}
}
/**
* Check if a texture image can be pulled into a unified mipmap texture.
*/
GLboolean
st_texture_match_image(const struct pipe_resource *pt,
const struct gl_texture_image *image)
{
GLuint ptWidth, ptHeight, ptDepth, ptLayers;
/* Images with borders are never pulled into mipmap textures.
*/
if (image->Border)
return GL_FALSE;
/* Check if this image's format matches the established texture's format.
*/
if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
return GL_FALSE;
st_gl_texture_dims_to_pipe_dims(image->TexObject->Target,
image->Width, image->Height, image->Depth,
&ptWidth, &ptHeight, &ptDepth, &ptLayers);
/* Test if this image's size matches what's expected in the
* established texture.
*/
if (ptWidth != u_minify(pt->width0, image->Level) ||
ptHeight != u_minify(pt->height0, image->Level) ||
ptDepth != u_minify(pt->depth0, image->Level) ||
ptLayers != pt->array_size)
return GL_FALSE;
return GL_TRUE;
}
/**
* Map a texture image and return the address for a particular 2D face/slice/
* layer. The stImage indicates the cube face and mipmap level. The slice
* of the 3D texture is passed in 'zoffset'.
* \param usage one of the PIPE_TRANSFER_x values
* \param x, y, w, h the region of interest of the 2D image.
* \return address of mapping or NULL if any error
*/
GLubyte *
st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
GLuint zoffset, enum pipe_transfer_usage usage,
GLuint x, GLuint y, GLuint w, GLuint h)
{
struct st_texture_object *stObj =
st_texture_object(stImage->base.TexObject);
struct pipe_context *pipe = st->pipe;
GLuint level;
DBG("%s \n", __FUNCTION__);
if (!stImage->pt)
return NULL;
if (stObj->pt != stImage->pt)
level = 0;
else
level = stImage->base.Level;
stImage->transfer = pipe_get_transfer(st->pipe, stImage->pt, level,
stImage->base.Face + zoffset,
usage, x, y, w, h);
if (stImage->transfer)
return pipe_transfer_map(pipe, stImage->transfer);
else
return NULL;
}
void
st_texture_image_unmap(struct st_context *st,
struct st_texture_image *stImage)
{
struct pipe_context *pipe = st->pipe;
DBG("%s\n", __FUNCTION__);
pipe_transfer_unmap(pipe, stImage->transfer);
pipe->transfer_destroy(pipe, stImage->transfer);
stImage->transfer = NULL;
}
/**
* Upload data to a rectangular sub-region. Lots of choices how to do this:
*
* - memcpy by span to current destination
* - upload data as new buffer and blit
*
* Currently always memcpy.
*/
static void
st_surface_data(struct pipe_context *pipe,
struct pipe_transfer *dst,
unsigned dstx, unsigned dsty,
const void *src, unsigned src_stride,
unsigned srcx, unsigned srcy, unsigned width, unsigned height)
{
void *map = pipe_transfer_map(pipe, dst);
assert(dst->resource);
util_copy_rect(map,
dst->resource->format,
dst->stride,
dstx, dsty,
width, height,
src, src_stride,
srcx, srcy);
pipe_transfer_unmap(pipe, dst);
}
/* Upload data for a particular image.
*/
void
st_texture_image_data(struct st_context *st,
struct pipe_resource *dst,
GLuint face,
GLuint level,
void *src,
GLuint src_row_stride, GLuint src_image_stride)
{
struct pipe_context *pipe = st->pipe;
GLuint i;
const GLubyte *srcUB = src;
struct pipe_transfer *dst_transfer;
GLuint layers;
if (dst->target == PIPE_TEXTURE_1D_ARRAY ||
dst->target == PIPE_TEXTURE_2D_ARRAY)
layers = dst->array_size;
else
layers = u_minify(dst->depth0, level);
DBG("%s\n", __FUNCTION__);
for (i = 0; i < layers; i++) {
dst_transfer = pipe_get_transfer(st->pipe, dst, level, face + i,
PIPE_TRANSFER_WRITE, 0, 0,
u_minify(dst->width0, level),
u_minify(dst->height0, level));
st_surface_data(pipe, dst_transfer,
0, 0, /* dstx, dsty */
srcUB,
src_row_stride,
0, 0, /* source x, y */
u_minify(dst->width0, level),
u_minify(dst->height0, level)); /* width, height */
pipe->transfer_destroy(pipe, dst_transfer);
srcUB += src_image_stride;
}
}
/**
* For debug only: get/print center pixel in the src resource.
*/
static void
print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src)
{
struct pipe_transfer *xfer;
struct pipe_box region;
ubyte *map;
region.x = src->width0 / 2;
region.y = src->height0 / 2;
region.z = 0;
region.width = 1;
region.height = 1;
region.depth = 1;
xfer = pipe->get_transfer(pipe, src, 0, PIPE_TRANSFER_READ, ®ion);
map = pipe->transfer_map(pipe, xfer);
printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]);
pipe->transfer_unmap(pipe, xfer);
pipe->transfer_destroy(pipe, xfer);
}
/**
* Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
* This is used to copy mipmap images from one texture buffer to another.
* This typically happens when our initial guess at the total texture size
* is incorrect (see the guess_and_alloc_texture() function).
*/
void
st_texture_image_copy(struct pipe_context *pipe,
struct pipe_resource *dst, GLuint dstLevel,
struct pipe_resource *src, GLuint srcLevel,
GLuint face)
{
GLuint width = u_minify(dst->width0, dstLevel);
GLuint height = u_minify(dst->height0, dstLevel);
GLuint depth = u_minify(dst->depth0, dstLevel);
struct pipe_box src_box;
GLuint i;
if (u_minify(src->width0, srcLevel) != width ||
u_minify(src->height0, srcLevel) != height ||
u_minify(src->depth0, srcLevel) != depth) {
/* The source image size doesn't match the destination image size.
* This can happen in some degenerate situations such as rendering to a
* cube map face which was set up with mismatched texture sizes.
*/
return;
}
src_box.x = 0;
src_box.y = 0;
src_box.width = width;
src_box.height = height;
src_box.depth = 1;
/* Loop over 3D image slices */
/* could (and probably should) use "true" 3d box here -
but drivers can't quite handle it yet */
for (i = face; i < face + depth; i++) {
src_box.z = i;
if (0) {
print_center_pixel(pipe, src);
}
pipe->resource_copy_region(pipe,
dst,
dstLevel,
0, 0, i,/* destX, Y, Z */
src,
srcLevel,
&src_box);
}
}
struct pipe_resource *
st_create_color_map_texture(struct gl_context *ctx)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct pipe_resource *pt;
enum pipe_format format;
const uint texSize = 256; /* simple, and usually perfect */
/* find an RGBA texture format */
format = st_choose_format(pipe->screen, GL_RGBA, GL_NONE, GL_NONE,
PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
/* create texture for color map/table */
pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,
texSize, texSize, 1, 1, PIPE_BIND_SAMPLER_VIEW);
return pt;
}