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0f0ee4a909
As part of our on-going goal to remove our dependence on a global Cogl context this patch adds a pointer to the context to each CoglTexture so that the various texture apis no longer need to use _COGL_GET_CONTEXT. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 83131072eea395f18ab0525ea2446f443a6033b1)
640 lines
21 KiB
C
640 lines
21 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2010 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*
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* Authors:
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* Neil Roberts <neil@linux.intel.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl-private.h"
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#include "cogl-util.h"
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#include "cogl-texture-private.h"
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#include "cogl-texture-rectangle-private.h"
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#include "cogl-texture-driver.h"
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#include "cogl-context-private.h"
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#include "cogl-object-private.h"
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#include "cogl-journal-private.h"
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#include "cogl-pipeline-opengl-private.h"
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#include <string.h>
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#include <math.h>
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/* These aren't defined under GLES */
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#ifndef GL_TEXTURE_RECTANGLE_ARB
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#define GL_TEXTURE_RECTANGLE_ARB 0x84F5
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#endif
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#ifndef GL_CLAMP
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#define GL_CLAMP 0x2900
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#endif
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#ifndef GL_CLAMP_TO_BORDER
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#define GL_CLAMP_TO_BORDER 0x812D
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#endif
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static void _cogl_texture_rectangle_free (CoglTextureRectangle *tex_rect);
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COGL_TEXTURE_DEFINE (TextureRectangle, texture_rectangle);
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static const CoglTextureVtable cogl_texture_rectangle_vtable;
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static CoglBool
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can_use_wrap_mode (GLenum wrap_mode)
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{
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return (wrap_mode == GL_CLAMP ||
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wrap_mode == GL_CLAMP_TO_EDGE ||
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wrap_mode == GL_CLAMP_TO_BORDER);
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}
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static void
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_cogl_texture_rectangle_set_wrap_mode_parameters (CoglTexture *tex,
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GLenum wrap_mode_s,
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GLenum wrap_mode_t,
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GLenum wrap_mode_p)
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{
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CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
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CoglContext *ctx = tex->context;
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/* Only set the wrap mode if it's different from the current value
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to avoid too many GL calls. Texture rectangle doesn't make use of
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the r coordinate so we can ignore its wrap mode */
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if (tex_rect->wrap_mode_s != wrap_mode_s ||
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tex_rect->wrap_mode_t != wrap_mode_t)
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{
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g_assert (can_use_wrap_mode (wrap_mode_s));
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g_assert (can_use_wrap_mode (wrap_mode_t));
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_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB,
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tex_rect->gl_texture,
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tex_rect->is_foreign);
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GE( ctx, glTexParameteri (GL_TEXTURE_RECTANGLE_ARB,
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GL_TEXTURE_WRAP_S, wrap_mode_s) );
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GE( ctx, glTexParameteri (GL_TEXTURE_RECTANGLE_ARB,
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GL_TEXTURE_WRAP_T, wrap_mode_t) );
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tex_rect->wrap_mode_s = wrap_mode_s;
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tex_rect->wrap_mode_t = wrap_mode_t;
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}
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}
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static void
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_cogl_texture_rectangle_free (CoglTextureRectangle *tex_rect)
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{
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if (!tex_rect->is_foreign)
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_cogl_delete_gl_texture (tex_rect->gl_texture);
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/* Chain up */
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_cogl_texture_free (COGL_TEXTURE (tex_rect));
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}
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static CoglBool
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_cogl_texture_rectangle_can_create (CoglContext *ctx,
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unsigned int width,
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unsigned int height,
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CoglPixelFormat internal_format,
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GError **error)
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{
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GLenum gl_intformat;
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GLenum gl_format;
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GLenum gl_type;
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if (!cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_RECTANGLE))
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{
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g_set_error (error,
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COGL_TEXTURE_ERROR,
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COGL_TEXTURE_ERROR_TYPE,
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"The CoglTextureRectangle feature isn't available");
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return FALSE;
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}
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ctx->driver_vtable->pixel_format_to_gl (ctx,
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internal_format,
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&gl_intformat,
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&gl_format,
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&gl_type);
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/* Check that the driver can create a texture with that size */
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if (!ctx->texture_driver->size_supported (ctx,
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GL_TEXTURE_RECTANGLE_ARB,
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gl_intformat,
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gl_format,
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gl_type,
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width,
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height))
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{
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g_set_error (error,
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COGL_TEXTURE_ERROR,
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COGL_TEXTURE_ERROR_SIZE,
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"The requested texture size + format is unsupported");
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return FALSE;
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}
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return TRUE;
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}
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static void
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_cogl_texture_rectangle_set_auto_mipmap (CoglTexture *tex,
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CoglBool value)
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{
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/* Rectangle textures currently never support mipmapping so there's
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no point in doing anything here */
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}
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static CoglTextureRectangle *
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_cogl_texture_rectangle_create_base (CoglContext *ctx,
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int width,
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int height,
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CoglPixelFormat internal_format)
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{
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CoglTextureRectangle *tex_rect = g_new (CoglTextureRectangle, 1);
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CoglTexture *tex = COGL_TEXTURE (tex_rect);
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_cogl_texture_init (tex, ctx, &cogl_texture_rectangle_vtable);
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tex_rect->width = width;
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tex_rect->height = height;
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/* We default to GL_LINEAR for both filters */
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tex_rect->min_filter = GL_LINEAR;
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tex_rect->mag_filter = GL_LINEAR;
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/* Wrap mode not yet set */
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tex_rect->wrap_mode_s = GL_FALSE;
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tex_rect->wrap_mode_t = GL_FALSE;
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tex_rect->format = internal_format;
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return tex_rect;
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}
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CoglTextureRectangle *
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cogl_texture_rectangle_new_with_size (CoglContext *ctx,
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int width,
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int height,
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CoglPixelFormat internal_format,
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GError **error)
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{
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CoglTextureRectangle *tex_rect;
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GLenum gl_intformat;
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GLenum gl_format;
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GLenum gl_type;
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/* Since no data, we need some internal format */
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if (internal_format == COGL_PIXEL_FORMAT_ANY)
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internal_format = COGL_PIXEL_FORMAT_RGBA_8888_PRE;
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if (!_cogl_texture_rectangle_can_create (ctx,
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width, height,
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internal_format, error))
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return NULL;
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internal_format = ctx->driver_vtable->pixel_format_to_gl (ctx,
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internal_format,
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&gl_intformat,
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&gl_format,
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&gl_type);
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tex_rect = _cogl_texture_rectangle_create_base (ctx,
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width, height,
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internal_format);
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ctx->texture_driver->gen (ctx,
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GL_TEXTURE_RECTANGLE_ARB,
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1, /* num textures */
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&tex_rect->gl_texture);
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_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB,
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tex_rect->gl_texture,
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tex_rect->is_foreign);
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GE( ctx, glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, gl_intformat,
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width, height, 0, gl_format, gl_type, NULL) );
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return _cogl_texture_rectangle_object_new (tex_rect);
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}
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CoglTextureRectangle *
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cogl_texture_rectangle_new_from_bitmap (CoglBitmap *bmp,
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CoglPixelFormat internal_format,
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GError **error)
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{
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CoglTextureRectangle *tex_rect;
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CoglBitmap *dst_bmp;
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GLenum gl_intformat;
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GLenum gl_format;
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GLenum gl_type;
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CoglContext *ctx;
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_COGL_RETURN_VAL_IF_FAIL (cogl_is_bitmap (bmp), NULL);
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ctx = _cogl_bitmap_get_context (bmp);
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internal_format =
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_cogl_texture_determine_internal_format (cogl_bitmap_get_format (bmp),
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internal_format);
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if (!_cogl_texture_rectangle_can_create (ctx,
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cogl_bitmap_get_width (bmp),
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cogl_bitmap_get_height (bmp),
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internal_format,
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error))
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return NULL;
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dst_bmp = _cogl_texture_prepare_for_upload (bmp,
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internal_format,
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&internal_format,
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&gl_intformat,
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&gl_format,
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&gl_type);
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if (dst_bmp == NULL)
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return NULL;
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tex_rect = _cogl_texture_rectangle_create_base (ctx,
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cogl_bitmap_get_width (bmp),
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cogl_bitmap_get_height (bmp),
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internal_format);
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ctx->texture_driver->gen (ctx,
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GL_TEXTURE_RECTANGLE_ARB,
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1, /* num textures */
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&tex_rect->gl_texture);
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ctx->texture_driver->upload_to_gl (ctx,
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GL_TEXTURE_RECTANGLE_ARB,
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tex_rect->gl_texture,
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FALSE,
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dst_bmp,
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gl_intformat,
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gl_format,
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gl_type);
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tex_rect->gl_format = gl_intformat;
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cogl_object_unref (dst_bmp);
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return _cogl_texture_rectangle_object_new (tex_rect);
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}
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CoglTextureRectangle *
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_cogl_texture_rectangle_new_from_foreign (GLuint gl_handle,
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GLuint width,
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GLuint height,
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CoglPixelFormat format)
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{
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/* NOTE: width, height and internal format are not queriable
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* in GLES, hence such a function prototype.
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*/
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GLenum gl_error = 0;
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GLint gl_compressed = GL_FALSE;
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GLenum gl_int_format = 0;
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CoglTextureRectangle *tex_rect;
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_COGL_GET_CONTEXT (ctx, NULL);
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if (!ctx->texture_driver->allows_foreign_gl_target (ctx,
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GL_TEXTURE_RECTANGLE_ARB))
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return NULL;
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/* Make sure it is a valid GL texture object */
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if (!ctx->glIsTexture (gl_handle))
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return NULL;
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/* Make sure binding succeeds */
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while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
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;
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_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB, gl_handle, TRUE);
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if (ctx->glGetError () != GL_NO_ERROR)
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return NULL;
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/* Obtain texture parameters */
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#if HAVE_COGL_GL
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if (ctx->driver == COGL_DRIVER_GL)
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{
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GLint val;
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GE( ctx, glGetTexLevelParameteriv (GL_TEXTURE_RECTANGLE_ARB, 0,
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GL_TEXTURE_COMPRESSED,
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&gl_compressed) );
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GE( ctx, glGetTexLevelParameteriv (GL_TEXTURE_RECTANGLE_ARB, 0,
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GL_TEXTURE_INTERNAL_FORMAT,
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&val) );
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gl_int_format = val;
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/* If we can query GL for the actual pixel format then we'll ignore
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the passed in format and use that. */
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if (!ctx->driver_vtable->pixel_format_from_gl_internal (ctx,
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gl_int_format,
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&format))
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return NULL;
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}
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else
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#endif
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{
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/* Otherwise we'll assume we can derive the GL format from the
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passed in format */
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ctx->driver_vtable->pixel_format_to_gl (ctx,
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format,
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&gl_int_format,
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NULL,
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NULL);
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}
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/* Note: We always trust the given width and height without querying
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* the texture object because the user may be creating a Cogl
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* texture for a texture_from_pixmap object where glTexImage2D may
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* not have been called and the texture_from_pixmap spec doesn't
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* clarify that it is reliable to query back the size from OpenGL.
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*/
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/* Validate width and height */
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if (width <= 0 || height <= 0)
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return NULL;
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/* Compressed texture images not supported */
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if (gl_compressed == GL_TRUE)
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return NULL;
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/* Create new texture */
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tex_rect = _cogl_texture_rectangle_create_base (ctx, width, height, format);
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/* Setup bitmap info */
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tex_rect->is_foreign = TRUE;
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tex_rect->format = format;
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tex_rect->gl_texture = gl_handle;
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tex_rect->gl_format = gl_int_format;
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/* Unknown filter */
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tex_rect->min_filter = GL_FALSE;
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tex_rect->mag_filter = GL_FALSE;
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return _cogl_texture_rectangle_object_new (tex_rect);
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}
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static int
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_cogl_texture_rectangle_get_max_waste (CoglTexture *tex)
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{
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return -1;
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}
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static CoglBool
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_cogl_texture_rectangle_is_sliced (CoglTexture *tex)
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{
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return FALSE;
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}
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static CoglBool
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_cogl_texture_rectangle_can_hardware_repeat (CoglTexture *tex)
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{
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return FALSE;
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}
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static void
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_cogl_texture_rectangle_transform_coords_to_gl (CoglTexture *tex,
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float *s,
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float *t)
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{
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CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
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*s *= tex_rect->width;
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*t *= tex_rect->height;
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}
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static CoglTransformResult
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_cogl_texture_rectangle_transform_quad_coords_to_gl (CoglTexture *tex,
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float *coords)
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{
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CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
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CoglBool need_repeat = FALSE;
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int i;
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for (i = 0; i < 4; i++)
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{
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if (coords[i] < 0.0f || coords[i] > 1.0f)
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need_repeat = TRUE;
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coords[i] *= (i & 1) ? tex_rect->height : tex_rect->width;
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}
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return (need_repeat ? COGL_TRANSFORM_SOFTWARE_REPEAT
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: COGL_TRANSFORM_NO_REPEAT);
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}
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static CoglBool
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_cogl_texture_rectangle_get_gl_texture (CoglTexture *tex,
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GLuint *out_gl_handle,
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GLenum *out_gl_target)
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{
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CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
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if (out_gl_handle)
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*out_gl_handle = tex_rect->gl_texture;
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if (out_gl_target)
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*out_gl_target = GL_TEXTURE_RECTANGLE_ARB;
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return TRUE;
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}
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static void
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_cogl_texture_rectangle_set_filters (CoglTexture *tex,
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GLenum min_filter,
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GLenum mag_filter)
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{
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CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
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CoglContext *ctx = tex->context;
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if (min_filter == tex_rect->min_filter
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&& mag_filter == tex_rect->mag_filter)
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return;
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/* Rectangle textures don't support mipmapping */
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g_assert (min_filter == GL_LINEAR || min_filter == GL_NEAREST);
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/* Store new values */
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tex_rect->min_filter = min_filter;
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tex_rect->mag_filter = mag_filter;
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/* Apply new filters to the texture */
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_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB,
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tex_rect->gl_texture,
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tex_rect->is_foreign);
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GE( ctx, glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER,
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mag_filter) );
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GE( ctx, glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER,
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min_filter) );
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}
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static void
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_cogl_texture_rectangle_pre_paint (CoglTexture *tex,
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CoglTexturePrePaintFlags flags)
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{
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/* Rectangle textures don't support mipmaps */
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g_assert ((flags & COGL_TEXTURE_NEEDS_MIPMAP) == 0);
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}
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static void
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_cogl_texture_rectangle_ensure_non_quad_rendering (CoglTexture *tex)
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{
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/* Nothing needs to be done */
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}
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static CoglBool
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_cogl_texture_rectangle_set_region (CoglTexture *tex,
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int src_x,
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int src_y,
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int dst_x,
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int dst_y,
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unsigned int dst_width,
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unsigned int dst_height,
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CoglBitmap *bmp)
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{
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CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
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GLenum gl_format;
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GLenum gl_type;
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CoglContext *ctx = tex->context;
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bmp = _cogl_texture_prepare_for_upload (bmp,
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cogl_texture_get_format (tex),
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NULL,
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NULL,
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&gl_format,
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&gl_type);
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/* Send data to GL */
|
|
ctx->texture_driver->upload_subregion_to_gl (ctx,
|
|
GL_TEXTURE_RECTANGLE_ARB,
|
|
tex_rect->gl_texture,
|
|
FALSE,
|
|
src_x, src_y,
|
|
dst_x, dst_y,
|
|
dst_width, dst_height,
|
|
bmp,
|
|
gl_format,
|
|
gl_type);
|
|
|
|
cogl_object_unref (bmp);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_rectangle_get_data (CoglTexture *tex,
|
|
CoglPixelFormat format,
|
|
unsigned int rowstride,
|
|
uint8_t *data)
|
|
{
|
|
CoglTextureRectangle *tex_rect = COGL_TEXTURE_RECTANGLE (tex);
|
|
CoglContext *ctx = tex->context;
|
|
int bpp;
|
|
GLenum gl_format;
|
|
GLenum gl_type;
|
|
|
|
bpp = _cogl_pixel_format_get_bytes_per_pixel (format);
|
|
|
|
ctx->driver_vtable->pixel_format_to_gl (ctx,
|
|
format,
|
|
NULL, /* internal format */
|
|
&gl_format,
|
|
&gl_type);
|
|
|
|
ctx->texture_driver->prep_gl_for_pixels_download (ctx,
|
|
rowstride,
|
|
tex_rect->width,
|
|
bpp);
|
|
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_RECTANGLE_ARB,
|
|
tex_rect->gl_texture,
|
|
tex_rect->is_foreign);
|
|
return ctx->texture_driver->gl_get_tex_image (ctx,
|
|
GL_TEXTURE_RECTANGLE_ARB,
|
|
gl_format,
|
|
gl_type,
|
|
data);
|
|
}
|
|
|
|
static CoglPixelFormat
|
|
_cogl_texture_rectangle_get_format (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_RECTANGLE (tex)->format;
|
|
}
|
|
|
|
static GLenum
|
|
_cogl_texture_rectangle_get_gl_format (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_RECTANGLE (tex)->gl_format;
|
|
}
|
|
|
|
static int
|
|
_cogl_texture_rectangle_get_width (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_RECTANGLE (tex)->width;
|
|
}
|
|
|
|
static int
|
|
_cogl_texture_rectangle_get_height (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_RECTANGLE (tex)->height;
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_rectangle_is_foreign (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_RECTANGLE (tex)->is_foreign;
|
|
}
|
|
|
|
static CoglTextureType
|
|
_cogl_texture_rectangle_get_type (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_TYPE_RECTANGLE;
|
|
}
|
|
|
|
static const CoglTextureVtable
|
|
cogl_texture_rectangle_vtable =
|
|
{
|
|
TRUE, /* primitive */
|
|
_cogl_texture_rectangle_set_region,
|
|
_cogl_texture_rectangle_get_data,
|
|
NULL, /* foreach_sub_texture_in_region */
|
|
_cogl_texture_rectangle_get_max_waste,
|
|
_cogl_texture_rectangle_is_sliced,
|
|
_cogl_texture_rectangle_can_hardware_repeat,
|
|
_cogl_texture_rectangle_transform_coords_to_gl,
|
|
_cogl_texture_rectangle_transform_quad_coords_to_gl,
|
|
_cogl_texture_rectangle_get_gl_texture,
|
|
_cogl_texture_rectangle_set_filters,
|
|
_cogl_texture_rectangle_pre_paint,
|
|
_cogl_texture_rectangle_ensure_non_quad_rendering,
|
|
_cogl_texture_rectangle_set_wrap_mode_parameters,
|
|
_cogl_texture_rectangle_get_format,
|
|
_cogl_texture_rectangle_get_gl_format,
|
|
_cogl_texture_rectangle_get_width,
|
|
_cogl_texture_rectangle_get_height,
|
|
_cogl_texture_rectangle_get_type,
|
|
_cogl_texture_rectangle_is_foreign,
|
|
_cogl_texture_rectangle_set_auto_mipmap
|
|
};
|