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/*
* Mesa 3-D graphics library
* Version: 7.9
*
* Copyright (C) 2010 LunarG Inc.
*
* 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, sublicense,
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* Chia-I Wu <olv@lunarg.com>
*/
#include "main/texobj.h"
#include "main/texfetch.h"
#include "main/teximage.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "st_cb_eglimage.h"
#include "st_cb_fbo.h"
#include "st_texture.h"
#include "st_format.h"
#include "st_manager.h"
#if FEATURE_OES_EGL_image
/**
* Return the base format just like _mesa_base_fbo_format does.
*/
static GLenum
st_pipe_format_to_base_format(enum pipe_format format)
{
GLenum base_format;
if (util_format_is_depth_or_stencil(format)) {
if (util_format_is_depth_and_stencil(format)) {
base_format = GL_DEPTH_STENCIL;
}
else {
if (format == PIPE_FORMAT_S8_USCALED)
base_format = GL_STENCIL_INDEX;
else
base_format = GL_DEPTH_COMPONENT;
}
}
else {
/* is this enough? */
if (util_format_has_alpha(format))
base_format = GL_RGBA;
else
base_format = GL_RGB;
}
return base_format;
}
static void
st_egl_image_target_renderbuffer_storage(GLcontext *ctx,
struct gl_renderbuffer *rb,
GLeglImageOES image_handle)
{
struct st_context *st = st_context(ctx);
struct st_renderbuffer *strb = st_renderbuffer(rb);
struct pipe_surface *ps;
unsigned usage;
usage = PIPE_BIND_RENDER_TARGET;
ps = st_manager_get_egl_image_surface(st, (void *) image_handle, usage);
if (ps) {
strb->Base.Width = ps->width;
strb->Base.Height = ps->height;
strb->Base.Format = st_pipe_format_to_mesa_format(ps->format);
strb->Base.DataType = st_format_datatype(ps->format);
strb->Base._BaseFormat = st_pipe_format_to_base_format(ps->format);
strb->Base.InternalFormat = strb->Base._BaseFormat;
pipe_surface_reference(&strb->surface, ps);
pipe_resource_reference(&strb->texture, ps->texture);
pipe_surface_reference(&ps, NULL);
}
}
static void
st_bind_surface(GLcontext *ctx, GLenum target,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage,
struct pipe_surface *ps)
{
struct st_texture_object *stObj;
struct st_texture_image *stImage;
GLenum internalFormat;
/* map pipe format to base format */
if (util_format_get_component_bits(ps->format, UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
internalFormat = GL_RGBA;
else
internalFormat = GL_RGB;
stObj = st_texture_object(texObj);
stImage = st_texture_image(texImage);
/* switch to surface based */
if (!stObj->surface_based) {
_mesa_clear_texture_object(ctx, texObj);
stObj->surface_based = GL_TRUE;
}
_mesa_init_teximage_fields(ctx, target, texImage,
ps->width, ps->height, 1, 0, internalFormat);
texImage->TexFormat = st_pipe_format_to_mesa_format(ps->format);
_mesa_set_fetch_functions(texImage, 2);
/* FIXME create a non-default sampler view from the pipe_surface? */
pipe_resource_reference(&stImage->pt, ps->texture);
stObj->width0 = ps->width;
stObj->height0 = ps->height;
stObj->depth0 = 1;
_mesa_dirty_texobj(ctx, texObj, GL_TRUE);
}
static void
st_egl_image_target_texture_2d(GLcontext *ctx, GLenum target,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage,
GLeglImageOES image_handle)
{
struct st_context *st = st_context(ctx);
struct pipe_surface *ps;
unsigned usage;
usage = PIPE_BIND_SAMPLER_VIEW;
ps = st_manager_get_egl_image_surface(st, (void *) image_handle, usage);
if (ps) {
st_bind_surface(ctx, target, texObj, texImage, ps);
pipe_surface_reference(&ps, NULL);
}
}
void
st_init_eglimage_functions(struct dd_function_table *functions)
{
functions->EGLImageTargetTexture2D = st_egl_image_target_texture_2d;
functions->EGLImageTargetRenderbufferStorage = st_egl_image_target_renderbuffer_storage;
}
#endif /* FEATURE_OES_EGL_image */
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