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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28. #include <stdio.h>
  29.  
  30. #include "st_context.h"
  31. #include "st_format.h"
  32. #include "st_texture.h"
  33. #include "st_cb_fbo.h"
  34. #include "main/enums.h"
  35.  
  36. #include "pipe/p_state.h"
  37. #include "pipe/p_context.h"
  38. #include "pipe/p_defines.h"
  39. #include "util/u_inlines.h"
  40. #include "util/u_format.h"
  41. #include "util/u_rect.h"
  42. #include "util/u_math.h"
  43.  
  44.  
  45. #define DBG if(0) printf
  46.  
  47.  
  48. /**
  49.  * Allocate a new pipe_resource object
  50.  * width0, height0, depth0 are the dimensions of the level 0 image
  51.  * (the highest resolution).  last_level indicates how many mipmap levels
  52.  * to allocate storage for.  For non-mipmapped textures, this will be zero.
  53.  */
  54. struct pipe_resource *
  55. st_texture_create(struct st_context *st,
  56.                   enum pipe_texture_target target,
  57.                   enum pipe_format format,
  58.                   GLuint last_level,
  59.                   GLuint width0,
  60.                   GLuint height0,
  61.                   GLuint depth0,
  62.                   GLuint layers,
  63.                   GLuint nr_samples,
  64.                   GLuint bind )
  65. {
  66.    struct pipe_resource pt, *newtex;
  67.    struct pipe_screen *screen = st->pipe->screen;
  68.  
  69.    assert(target < PIPE_MAX_TEXTURE_TYPES);
  70.    assert(width0 > 0);
  71.    assert(height0 > 0);
  72.    assert(depth0 > 0);
  73.    if (target == PIPE_TEXTURE_CUBE)
  74.       assert(layers == 6);
  75.  
  76.    DBG("%s target %d format %s last_level %d\n", __FUNCTION__,
  77.        (int) target, util_format_name(format), last_level);
  78.  
  79.    assert(format);
  80.    assert(screen->is_format_supported(screen, format, target, 0,
  81.                                       PIPE_BIND_SAMPLER_VIEW));
  82.  
  83.    memset(&pt, 0, sizeof(pt));
  84.    pt.target = target;
  85.    pt.format = format;
  86.    pt.last_level = last_level;
  87.    pt.width0 = width0;
  88.    pt.height0 = height0;
  89.    pt.depth0 = depth0;
  90.    pt.array_size = (target == PIPE_TEXTURE_CUBE ? 6 : layers);
  91.    pt.usage = PIPE_USAGE_DEFAULT;
  92.    pt.bind = bind;
  93.    pt.flags = 0;
  94.    pt.nr_samples = nr_samples;
  95.  
  96.    newtex = screen->resource_create(screen, &pt);
  97.  
  98.    assert(!newtex || pipe_is_referenced(&newtex->reference));
  99.  
  100.    return newtex;
  101. }
  102.  
  103.  
  104. /**
  105.  * In OpenGL the number of 1D array texture layers is the "height" and
  106.  * the number of 2D array texture layers is the "depth".  In Gallium the
  107.  * number of layers in an array texture is a separate 'array_size' field.
  108.  * This function converts dimensions from the former to the later.
  109.  */
  110. void
  111. st_gl_texture_dims_to_pipe_dims(GLenum texture,
  112.                                 GLuint widthIn,
  113.                                 GLuint heightIn,
  114.                                 GLuint depthIn,
  115.                                 GLuint *widthOut,
  116.                                 GLuint *heightOut,
  117.                                 GLuint *depthOut,
  118.                                 GLuint *layersOut)
  119. {
  120.    switch (texture) {
  121.    case GL_TEXTURE_1D:
  122.    case GL_PROXY_TEXTURE_1D:
  123.       assert(heightIn == 1);
  124.       assert(depthIn == 1);
  125.       *widthOut = widthIn;
  126.       *heightOut = 1;
  127.       *depthOut = 1;
  128.       *layersOut = 1;
  129.       break;
  130.    case GL_TEXTURE_1D_ARRAY:
  131.    case GL_PROXY_TEXTURE_1D_ARRAY:
  132.       assert(depthIn == 1);
  133.       *widthOut = widthIn;
  134.       *heightOut = 1;
  135.       *depthOut = 1;
  136.       *layersOut = heightIn;
  137.       break;
  138.    case GL_TEXTURE_2D:
  139.    case GL_PROXY_TEXTURE_2D:
  140.    case GL_TEXTURE_RECTANGLE:
  141.    case GL_PROXY_TEXTURE_RECTANGLE:
  142.    case GL_TEXTURE_EXTERNAL_OES:
  143.    case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
  144.    case GL_TEXTURE_2D_MULTISAMPLE:
  145.       assert(depthIn == 1);
  146.       *widthOut = widthIn;
  147.       *heightOut = heightIn;
  148.       *depthOut = 1;
  149.       *layersOut = 1;
  150.       break;
  151.    case GL_TEXTURE_CUBE_MAP:
  152.    case GL_PROXY_TEXTURE_CUBE_MAP:
  153.    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
  154.    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
  155.    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
  156.    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
  157.    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
  158.    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
  159.       assert(depthIn == 1);
  160.       *widthOut = widthIn;
  161.       *heightOut = heightIn;
  162.       *depthOut = 1;
  163.       *layersOut = 6;
  164.       break;
  165.    case GL_TEXTURE_2D_ARRAY:
  166.    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
  167.    case GL_PROXY_TEXTURE_2D_ARRAY:
  168.    case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
  169.       *widthOut = widthIn;
  170.       *heightOut = heightIn;
  171.       *depthOut = 1;
  172.       *layersOut = depthIn;
  173.       break;
  174.    case GL_TEXTURE_CUBE_MAP_ARRAY:
  175.    case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
  176.       *widthOut = widthIn;
  177.       *heightOut = heightIn;
  178.       *depthOut = 1;
  179.       *layersOut = depthIn;
  180.       break;
  181.    default:
  182.       assert(0 && "Unexpected texture in st_gl_texture_dims_to_pipe_dims()");
  183.       /* fall-through */
  184.    case GL_TEXTURE_3D:
  185.    case GL_PROXY_TEXTURE_3D:
  186.       *widthOut = widthIn;
  187.       *heightOut = heightIn;
  188.       *depthOut = depthIn;
  189.       *layersOut = 1;
  190.       break;
  191.    }
  192. }
  193.  
  194.  
  195. /**
  196.  * Check if a texture image can be pulled into a unified mipmap texture.
  197.  */
  198. GLboolean
  199. st_texture_match_image(const struct pipe_resource *pt,
  200.                        const struct gl_texture_image *image)
  201. {
  202.    GLuint ptWidth, ptHeight, ptDepth, ptLayers;
  203.  
  204.    /* Images with borders are never pulled into mipmap textures.
  205.     */
  206.    if (image->Border)
  207.       return GL_FALSE;
  208.  
  209.    /* Check if this image's format matches the established texture's format.
  210.     */
  211.    if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
  212.       return GL_FALSE;
  213.  
  214.    st_gl_texture_dims_to_pipe_dims(image->TexObject->Target,
  215.                                    image->Width, image->Height, image->Depth,
  216.                                    &ptWidth, &ptHeight, &ptDepth, &ptLayers);
  217.  
  218.    /* Test if this image's size matches what's expected in the
  219.     * established texture.
  220.     */
  221.    if (ptWidth != u_minify(pt->width0, image->Level) ||
  222.        ptHeight != u_minify(pt->height0, image->Level) ||
  223.        ptDepth != u_minify(pt->depth0, image->Level) ||
  224.        ptLayers != pt->array_size)
  225.       return GL_FALSE;
  226.  
  227.    return GL_TRUE;
  228. }
  229.  
  230.  
  231. /**
  232.  * Map a texture image and return the address for a particular 2D face/slice/
  233.  * layer.  The stImage indicates the cube face and mipmap level.  The slice
  234.  * of the 3D texture is passed in 'zoffset'.
  235.  * \param usage  one of the PIPE_TRANSFER_x values
  236.  * \param x, y, w, h  the region of interest of the 2D image.
  237.  * \return address of mapping or NULL if any error
  238.  */
  239. GLubyte *
  240. st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
  241.                      enum pipe_transfer_usage usage,
  242.                      GLuint x, GLuint y, GLuint z,
  243.                      GLuint w, GLuint h, GLuint d)
  244. {
  245.    struct st_texture_object *stObj =
  246.       st_texture_object(stImage->base.TexObject);
  247.    GLuint level;
  248.  
  249.    DBG("%s \n", __FUNCTION__);
  250.  
  251.    if (!stImage->pt)
  252.       return NULL;
  253.  
  254.    if (stObj->pt != stImage->pt)
  255.       level = 0;
  256.    else
  257.       level = stImage->base.Level;
  258.  
  259.    return pipe_transfer_map_3d(st->pipe, stImage->pt, level, usage,
  260.                                x, y, z + stImage->base.Face,
  261.                                w, h, d, &stImage->transfer);
  262. }
  263.  
  264.  
  265. void
  266. st_texture_image_unmap(struct st_context *st,
  267.                        struct st_texture_image *stImage)
  268. {
  269.    struct pipe_context *pipe = st->pipe;
  270.  
  271.    DBG("%s\n", __FUNCTION__);
  272.  
  273.    pipe_transfer_unmap(pipe, stImage->transfer);
  274.    stImage->transfer = NULL;
  275. }
  276.  
  277.  
  278. /* Upload data for a particular image.
  279.  */
  280. void
  281. st_texture_image_data(struct st_context *st,
  282.                       struct pipe_resource *dst,
  283.                       GLuint face,
  284.                       GLuint level,
  285.                       void *src,
  286.                       GLuint src_row_stride, GLuint src_image_stride)
  287. {
  288.    struct pipe_context *pipe = st->pipe;
  289.    GLuint i;
  290.    const GLubyte *srcUB = src;
  291.    GLuint layers;
  292.  
  293.    if (dst->target == PIPE_TEXTURE_1D_ARRAY ||
  294.        dst->target == PIPE_TEXTURE_2D_ARRAY ||
  295.        dst->target == PIPE_TEXTURE_CUBE_ARRAY)
  296.       layers = dst->array_size;
  297.    else
  298.       layers = u_minify(dst->depth0, level);
  299.  
  300.    DBG("%s\n", __FUNCTION__);
  301.  
  302.    for (i = 0; i < layers; i++) {
  303.       struct pipe_box box;
  304.       u_box_2d_zslice(0, 0, face + i,
  305.                       u_minify(dst->width0, level),
  306.                       u_minify(dst->height0, level),
  307.                       &box);
  308.  
  309.       pipe->transfer_inline_write(pipe, dst, level, PIPE_TRANSFER_WRITE,
  310.                                   &box, srcUB, src_row_stride, 0);
  311.  
  312.       srcUB += src_image_stride;
  313.    }
  314. }
  315.  
  316.  
  317. /**
  318.  * For debug only: get/print center pixel in the src resource.
  319.  */
  320. static void
  321. print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src)
  322. {
  323.    struct pipe_transfer *xfer;
  324.    struct pipe_box region;
  325.    ubyte *map;
  326.  
  327.    region.x = src->width0 / 2;
  328.    region.y = src->height0 / 2;
  329.    region.z = 0;
  330.    region.width = 1;
  331.    region.height = 1;
  332.    region.depth = 1;
  333.  
  334.    map = pipe->transfer_map(pipe, src, 0, PIPE_TRANSFER_READ, &region, &xfer);
  335.  
  336.    printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]);
  337.  
  338.    pipe->transfer_unmap(pipe, xfer);
  339. }
  340.  
  341.  
  342. /**
  343.  * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
  344.  * This is used to copy mipmap images from one texture buffer to another.
  345.  * This typically happens when our initial guess at the total texture size
  346.  * is incorrect (see the guess_and_alloc_texture() function).
  347.  */
  348. void
  349. st_texture_image_copy(struct pipe_context *pipe,
  350.                       struct pipe_resource *dst, GLuint dstLevel,
  351.                       struct pipe_resource *src, GLuint srcLevel,
  352.                       GLuint face)
  353. {
  354.    GLuint width = u_minify(dst->width0, dstLevel);
  355.    GLuint height = u_minify(dst->height0, dstLevel);
  356.    GLuint depth = u_minify(dst->depth0, dstLevel);
  357.    struct pipe_box src_box;
  358.    GLuint i;
  359.  
  360.    if (u_minify(src->width0, srcLevel) != width ||
  361.        u_minify(src->height0, srcLevel) != height ||
  362.        u_minify(src->depth0, srcLevel) != depth) {
  363.       /* The source image size doesn't match the destination image size.
  364.        * This can happen in some degenerate situations such as rendering to a
  365.        * cube map face which was set up with mismatched texture sizes.
  366.        */
  367.       return;
  368.    }
  369.  
  370.    src_box.x = 0;
  371.    src_box.y = 0;
  372.    src_box.width = width;
  373.    src_box.height = height;
  374.    src_box.depth = 1;
  375.    /* Loop over 3D image slices */
  376.    /* could (and probably should) use "true" 3d box here -
  377.       but drivers can't quite handle it yet */
  378.    for (i = face; i < face + depth; i++) {
  379.       src_box.z = i;
  380.  
  381.       if (0)  {
  382.          print_center_pixel(pipe, src);
  383.       }
  384.  
  385.       pipe->resource_copy_region(pipe,
  386.                                  dst,
  387.                                  dstLevel,
  388.                                  0, 0, i,/* destX, Y, Z */
  389.                                  src,
  390.                                  srcLevel,
  391.                                  &src_box);
  392.    }
  393. }
  394.  
  395.  
  396. struct pipe_resource *
  397. st_create_color_map_texture(struct gl_context *ctx)
  398. {
  399.    struct st_context *st = st_context(ctx);
  400.    struct pipe_resource *pt;
  401.    enum pipe_format format;
  402.    const uint texSize = 256; /* simple, and usually perfect */
  403.  
  404.    /* find an RGBA texture format */
  405.    format = st_choose_format(st, GL_RGBA, GL_NONE, GL_NONE,
  406.                              PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW,
  407.                              FALSE);
  408.  
  409.    /* create texture for color map/table */
  410.    pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,
  411.                           texSize, texSize, 1, 1, 0, PIPE_BIND_SAMPLER_VIEW);
  412.    return pt;
  413. }
  414.  
  415.