src/mesa/state_tracker/st_cb_eglimage.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2010 LunarG Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Chia-I Wu <olv@lunarg.com>
  26  */
  27
  28 #include "main/texobj.h"
  29 #include "main/teximage.h"
  30 #include "util/u_inlines.h"
  31 #include "util/u_format.h"
  32 #include "st_cb_eglimage.h"
  33 #include "st_cb_fbo.h"
  34 #include "st_context.h"
  35 #include "st_texture.h"
  36 #include "st_format.h"
  37 #include "st_manager.h"
  38 #include "st_sampler_view.h"
  39
  40
  41 /**
  42  * Return the base format just like _mesa_base_fbo_format does.
  43  */
  44 static GLenum
  45 st_pipe_format_to_base_format(enum pipe_format format)
  46 {
  47    GLenum base_format;
  48
  49    if (util_format_is_depth_or_stencil(format)) {
  50       if (util_format_is_depth_and_stencil(format)) {
  51          base_format = GL_DEPTH_STENCIL;
  52       }
  53       else {
  54          if (format == PIPE_FORMAT_S8_UINT)
  55             base_format = GL_STENCIL_INDEX;
  56          else
  57             base_format = GL_DEPTH_COMPONENT;
  58       }
  59    }
  60    else {
  61       /* is this enough? */
  62       if (util_format_has_alpha(format))
  63          base_format = GL_RGBA;
  64       else
  65          base_format = GL_RGB;
  66    }
  67
  68    return base_format;
  69 }
  70
  71 static void
  72 st_egl_image_target_renderbuffer_storage(struct gl_context *ctx,
  73                                          struct gl_renderbuffer *rb,
  74                                          GLeglImageOES image_handle)
  75 {
  76    struct st_context *st = st_context(ctx);
  77    struct st_renderbuffer *strb = st_renderbuffer(rb);
  78    struct pipe_surface *ps;
  79
  80    ps = st_manager_get_egl_image_surface(st, (void *) image_handle);
  81    if (ps) {
  82       strb->Base.Width = ps->width;
  83       strb->Base.Height = ps->height;
  84       strb->Base.Format = st_pipe_format_to_mesa_format(ps->format);
  85       strb->Base._BaseFormat = st_pipe_format_to_base_format(ps->format);
  86       strb->Base.InternalFormat = strb->Base._BaseFormat;
  87
  88       pipe_surface_reference(&strb->surface, ps);
  89       pipe_resource_reference(&strb->texture, ps->texture);
  90
  91       pipe_surface_reference(&ps, NULL);
  92    }
  93 }
  94
  95 static void
  96 st_bind_surface(struct gl_context *ctx, GLenum target,
  97                 struct gl_texture_object *texObj,
  98                 struct gl_texture_image *texImage,
  99                 struct pipe_surface *ps)
 100 {
 101    struct st_context *st = st_context(ctx);
 102    struct st_texture_object *stObj;
 103    struct st_texture_image *stImage;
 104    GLenum internalFormat;
 105    mesa_format texFormat;
 106
 107    /* map pipe format to base format */
 108    if (util_format_get_component_bits(ps->format, UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
 109       internalFormat = GL_RGBA;
 110    else
 111       internalFormat = GL_RGB;
 112
 113    stObj = st_texture_object(texObj);
 114    stImage = st_texture_image(texImage);
 115
 116    /* switch to surface based */
 117    if (!stObj->surface_based) {
 118       _mesa_clear_texture_object(ctx, texObj);
 119       stObj->surface_based = GL_TRUE;
 120    }
 121
 122    texFormat = st_pipe_format_to_mesa_format(ps->format);
 123
 124    /* TODO RequiredTextureImageUnits should probably be reset back
 125     * to 1 somewhere if different texture is bound??
 126     */
 127    if (texFormat == MESA_FORMAT_NONE) {
 128       switch (ps->format) {
 129       case PIPE_FORMAT_NV12:
 130          texFormat = MESA_FORMAT_R_UNORM8;
 131          texObj->RequiredTextureImageUnits = 2;
 132          break;
 133       case PIPE_FORMAT_IYUV:
 134          texFormat = MESA_FORMAT_R_UNORM8;
 135          texObj->RequiredTextureImageUnits = 3;
 136          break;
 137       default:
 138          unreachable("bad YUV format!");
 139       }
 140    }
 141
 142    _mesa_init_teximage_fields(ctx, texImage,
 143                               ps->width, ps->height, 1, 0, internalFormat,
 144                               texFormat);
 145
 146    /* FIXME create a non-default sampler view from the pipe_surface? */
 147    pipe_resource_reference(&stObj->pt, ps->texture);
 148    st_texture_release_all_sampler_views(st, stObj);
 149    pipe_resource_reference(&stImage->pt, stObj->pt);
 150
 151    stObj->surface_format = ps->format;
 152
 153    _mesa_dirty_texobj(ctx, texObj);
 154 }
 155
 156 static void
 157 st_egl_image_target_texture_2d(struct gl_context *ctx, GLenum target,
 158                                struct gl_texture_object *texObj,
 159                                struct gl_texture_image *texImage,
 160                                GLeglImageOES image_handle)
 161 {
 162    struct st_context *st = st_context(ctx);
 163    struct pipe_surface *ps;
 164
 165    ps = st_manager_get_egl_image_surface(st, (void *) image_handle);
 166    if (ps) {
 167       st_bind_surface(ctx, target, texObj, texImage, ps);
 168       pipe_surface_reference(&ps, NULL);
 169    }
 170 }
 171
 172 void
 173 st_init_eglimage_functions(struct dd_function_table *functions)
 174 {
 175    functions->EGLImageTargetTexture2D = st_egl_image_target_texture_2d;
 176    functions->EGLImageTargetRenderbufferStorage = st_egl_image_target_renderbuffer_storage;
 177 }