mirror of
https://github.com/brl/mutter.git
synced 2024-11-26 18:11:05 -05:00
81bb87e037
Until now, we hardcoded the internal format to GL_RGBA and used the internal format returned by pixel_format_to_gl() as the format for checking the texture size and format we're asked to create. Let's use the proper internal format/format from now on. This is needed as a later patch introduces DEPTH and DEPTH_STENCIL textures. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit ec45f60ee2545f88302da314bcdbe1439c4ba9c9)
415 lines
15 KiB
C
415 lines
15 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2007,2008,2009 Intel Corporation.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*
|
|
* Authors:
|
|
* Matthew Allum <mallum@openedhand.com>
|
|
* Neil Roberts <neil@linux.intel.com>
|
|
* Robert Bragg <robert@linux.intel.com>
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "cogl-private.h"
|
|
#include "cogl-util.h"
|
|
#include "cogl-bitmap.h"
|
|
#include "cogl-bitmap-private.h"
|
|
#include "cogl-texture-private.h"
|
|
#include "cogl-pipeline.h"
|
|
#include "cogl-context-private.h"
|
|
#include "cogl-object-private.h"
|
|
#include "cogl-primitives.h"
|
|
#include "cogl-pipeline-opengl-private.h"
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <math.h>
|
|
|
|
static void
|
|
_cogl_texture_driver_gen (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLsizei n,
|
|
GLuint *textures)
|
|
{
|
|
unsigned int i;
|
|
|
|
GE (ctx, glGenTextures (n, textures));
|
|
|
|
for (i = 0; i < n; i++)
|
|
{
|
|
_cogl_bind_gl_texture_transient (gl_target,
|
|
textures[i],
|
|
FALSE);
|
|
|
|
switch (gl_target)
|
|
{
|
|
case GL_TEXTURE_2D:
|
|
case GL_TEXTURE_3D:
|
|
/* GL_TEXTURE_MAG_FILTER defaults to GL_LINEAR, no need to set it */
|
|
GE( ctx, glTexParameteri (gl_target,
|
|
GL_TEXTURE_MIN_FILTER,
|
|
GL_LINEAR) );
|
|
break;
|
|
|
|
case GL_TEXTURE_RECTANGLE_ARB:
|
|
/* Texture rectangles already default to GL_LINEAR so nothing
|
|
needs to be done */
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
}
|
|
|
|
/* OpenGL - unlike GLES - can upload a sub region of pixel data from a larger
|
|
* source buffer */
|
|
static void
|
|
prep_gl_for_pixels_upload_full (CoglContext *ctx,
|
|
int pixels_rowstride,
|
|
int image_height,
|
|
int pixels_src_x,
|
|
int pixels_src_y,
|
|
int pixels_bpp)
|
|
{
|
|
GE( ctx, glPixelStorei (GL_UNPACK_ROW_LENGTH,
|
|
pixels_rowstride / pixels_bpp) );
|
|
|
|
GE( ctx, glPixelStorei (GL_UNPACK_SKIP_PIXELS, pixels_src_x) );
|
|
GE( ctx, glPixelStorei (GL_UNPACK_SKIP_ROWS, pixels_src_y) );
|
|
|
|
if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_3D))
|
|
GE( ctx, glPixelStorei (GL_UNPACK_IMAGE_HEIGHT, image_height) );
|
|
|
|
_cogl_texture_prep_gl_alignment_for_pixels_upload (pixels_rowstride);
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_driver_prep_gl_for_pixels_upload (CoglContext *ctx,
|
|
int pixels_rowstride,
|
|
int pixels_bpp)
|
|
{
|
|
prep_gl_for_pixels_upload_full (ctx, pixels_rowstride, 0, 0, 0, pixels_bpp);
|
|
}
|
|
|
|
/* OpenGL - unlike GLES - can download pixel data into a sub region of
|
|
* a larger destination buffer */
|
|
static void
|
|
prep_gl_for_pixels_download_full (CoglContext *ctx,
|
|
int image_width,
|
|
int pixels_rowstride,
|
|
int image_height,
|
|
int pixels_src_x,
|
|
int pixels_src_y,
|
|
int pixels_bpp)
|
|
{
|
|
GE( ctx, glPixelStorei (GL_PACK_ROW_LENGTH, pixels_rowstride / pixels_bpp) );
|
|
|
|
GE( ctx, glPixelStorei (GL_PACK_SKIP_PIXELS, pixels_src_x) );
|
|
GE( ctx, glPixelStorei (GL_PACK_SKIP_ROWS, pixels_src_y) );
|
|
|
|
if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_3D))
|
|
GE( ctx, glPixelStorei (GL_PACK_IMAGE_HEIGHT, image_height) );
|
|
|
|
_cogl_texture_prep_gl_alignment_for_pixels_download (pixels_bpp,
|
|
image_width,
|
|
pixels_rowstride);
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_driver_prep_gl_for_pixels_download (CoglContext *ctx,
|
|
int image_width,
|
|
int pixels_rowstride,
|
|
int pixels_bpp)
|
|
{
|
|
prep_gl_for_pixels_download_full (ctx,
|
|
pixels_rowstride,
|
|
image_width,
|
|
0 /* image height */,
|
|
0, 0, /* pixels_src_x/y */
|
|
pixels_bpp);
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_driver_upload_subregion_to_gl (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLuint gl_handle,
|
|
CoglBool is_foreign,
|
|
int src_x,
|
|
int src_y,
|
|
int dst_x,
|
|
int dst_y,
|
|
int width,
|
|
int height,
|
|
CoglBitmap *source_bmp,
|
|
GLuint source_gl_format,
|
|
GLuint source_gl_type)
|
|
{
|
|
uint8_t *data;
|
|
CoglPixelFormat source_format = cogl_bitmap_get_format (source_bmp);
|
|
int bpp = _cogl_pixel_format_get_bytes_per_pixel (source_format);
|
|
|
|
data = _cogl_bitmap_bind (source_bmp, COGL_BUFFER_ACCESS_READ, 0);
|
|
|
|
/* Setup gl alignment to match rowstride and top-left corner */
|
|
prep_gl_for_pixels_upload_full (ctx,
|
|
cogl_bitmap_get_rowstride (source_bmp),
|
|
0,
|
|
src_x,
|
|
src_y,
|
|
bpp);
|
|
|
|
_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
|
|
|
|
GE( ctx, glTexSubImage2D (gl_target, 0,
|
|
dst_x, dst_y,
|
|
width, height,
|
|
source_gl_format,
|
|
source_gl_type,
|
|
data) );
|
|
|
|
_cogl_bitmap_unbind (source_bmp);
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_driver_upload_to_gl (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLuint gl_handle,
|
|
CoglBool is_foreign,
|
|
CoglBitmap *source_bmp,
|
|
GLint internal_gl_format,
|
|
GLuint source_gl_format,
|
|
GLuint source_gl_type)
|
|
{
|
|
uint8_t *data;
|
|
CoglPixelFormat source_format = cogl_bitmap_get_format (source_bmp);
|
|
int bpp = _cogl_pixel_format_get_bytes_per_pixel (source_format);
|
|
|
|
data = _cogl_bitmap_bind (source_bmp, COGL_BUFFER_ACCESS_READ, 0);
|
|
|
|
/* Setup gl alignment to match rowstride and top-left corner */
|
|
prep_gl_for_pixels_upload_full (ctx,
|
|
cogl_bitmap_get_rowstride (source_bmp),
|
|
0, 0, 0, bpp);
|
|
|
|
_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
|
|
|
|
GE( ctx, glTexImage2D (gl_target, 0,
|
|
internal_gl_format,
|
|
cogl_bitmap_get_width (source_bmp),
|
|
cogl_bitmap_get_height (source_bmp),
|
|
0,
|
|
source_gl_format,
|
|
source_gl_type,
|
|
data) );
|
|
|
|
_cogl_bitmap_unbind (source_bmp);
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_driver_upload_to_gl_3d (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLuint gl_handle,
|
|
CoglBool is_foreign,
|
|
GLint height,
|
|
GLint depth,
|
|
CoglBitmap *source_bmp,
|
|
GLint internal_gl_format,
|
|
GLuint source_gl_format,
|
|
GLuint source_gl_type)
|
|
{
|
|
uint8_t *data;
|
|
CoglPixelFormat source_format = cogl_bitmap_get_format (source_bmp);
|
|
int bpp = _cogl_pixel_format_get_bytes_per_pixel (source_format);
|
|
|
|
data = _cogl_bitmap_bind (source_bmp, COGL_BUFFER_ACCESS_READ, 0);
|
|
|
|
/* Setup gl alignment to match rowstride and top-left corner */
|
|
prep_gl_for_pixels_upload_full (ctx,
|
|
cogl_bitmap_get_rowstride (source_bmp),
|
|
(cogl_bitmap_get_height (source_bmp) /
|
|
depth),
|
|
0, 0, bpp);
|
|
|
|
_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
|
|
|
|
GE( ctx, glTexImage3D (gl_target,
|
|
0, /* level */
|
|
internal_gl_format,
|
|
cogl_bitmap_get_width (source_bmp),
|
|
height,
|
|
depth,
|
|
0,
|
|
source_gl_format,
|
|
source_gl_type,
|
|
data) );
|
|
|
|
_cogl_bitmap_unbind (source_bmp);
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_driver_gl_get_tex_image (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLenum dest_gl_format,
|
|
GLenum dest_gl_type,
|
|
uint8_t *dest)
|
|
{
|
|
GE (ctx, glGetTexImage (gl_target,
|
|
0, /* level */
|
|
dest_gl_format,
|
|
dest_gl_type,
|
|
(GLvoid *)dest));
|
|
return TRUE;
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_driver_size_supported_3d (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLenum gl_format,
|
|
GLenum gl_type,
|
|
int width,
|
|
int height,
|
|
int depth)
|
|
{
|
|
GLenum proxy_target;
|
|
GLint new_width = 0;
|
|
|
|
if (gl_target == GL_TEXTURE_3D)
|
|
proxy_target = GL_PROXY_TEXTURE_3D;
|
|
else
|
|
/* Unknown target, assume it's not supported */
|
|
return FALSE;
|
|
|
|
/* Proxy texture allows for a quick check for supported size */
|
|
GE( ctx, glTexImage3D (proxy_target, 0, GL_RGBA,
|
|
width, height, depth, 0 /* border */,
|
|
gl_format, gl_type, NULL) );
|
|
|
|
GE( ctx, glGetTexLevelParameteriv (proxy_target, 0,
|
|
GL_TEXTURE_WIDTH, &new_width) );
|
|
|
|
return new_width != 0;
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_driver_size_supported (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLenum gl_intformat,
|
|
GLenum gl_format,
|
|
GLenum gl_type,
|
|
int width,
|
|
int height)
|
|
{
|
|
GLenum proxy_target;
|
|
GLint new_width = 0;
|
|
|
|
if (gl_target == GL_TEXTURE_2D)
|
|
proxy_target = GL_PROXY_TEXTURE_2D;
|
|
#if HAVE_COGL_GL
|
|
else if (gl_target == GL_TEXTURE_RECTANGLE_ARB)
|
|
proxy_target = GL_PROXY_TEXTURE_RECTANGLE_ARB;
|
|
#endif
|
|
else
|
|
/* Unknown target, assume it's not supported */
|
|
return FALSE;
|
|
|
|
/* Proxy texture allows for a quick check for supported size */
|
|
GE( ctx, glTexImage2D (proxy_target, 0, gl_intformat,
|
|
width, height, 0 /* border */,
|
|
gl_format, gl_type, NULL) );
|
|
|
|
GE( ctx, glGetTexLevelParameteriv (proxy_target, 0,
|
|
GL_TEXTURE_WIDTH, &new_width) );
|
|
|
|
return new_width != 0;
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_driver_try_setting_gl_border_color
|
|
(CoglContext *ctx,
|
|
GLuint gl_target,
|
|
const GLfloat *transparent_color)
|
|
{
|
|
/* Use a transparent border color so that we can leave the
|
|
color buffer alone when using texture co-ordinates
|
|
outside of the texture */
|
|
GE( ctx, glTexParameterfv (gl_target, GL_TEXTURE_BORDER_COLOR,
|
|
transparent_color) );
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_driver_allows_foreign_gl_target (CoglContext *ctx,
|
|
GLenum gl_target)
|
|
{
|
|
/* GL_ARB_texture_rectangle textures are supported if they are
|
|
created from foreign because some chipsets have trouble with
|
|
GL_ARB_texture_non_power_of_two. There is no Cogl call to create
|
|
them directly to emphasize the fact that they don't work fully
|
|
(for example, no mipmapping and complicated shader support) */
|
|
|
|
/* Allow 2-dimensional or rectangle textures only */
|
|
if (gl_target != GL_TEXTURE_2D && gl_target != GL_TEXTURE_RECTANGLE_ARB)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_driver_gl_generate_mipmaps (CoglContext *ctx,
|
|
GLenum gl_target)
|
|
{
|
|
GE( ctx, glGenerateMipmap (gl_target) );
|
|
}
|
|
|
|
static CoglPixelFormat
|
|
_cogl_texture_driver_find_best_gl_get_data_format
|
|
(CoglContext *context,
|
|
CoglPixelFormat format,
|
|
GLenum *closest_gl_format,
|
|
GLenum *closest_gl_type)
|
|
{
|
|
return context->driver_vtable->pixel_format_to_gl (context,
|
|
format,
|
|
NULL, /* don't need */
|
|
closest_gl_format,
|
|
closest_gl_type);
|
|
}
|
|
|
|
const CoglTextureDriver
|
|
_cogl_texture_driver_gl =
|
|
{
|
|
_cogl_texture_driver_gen,
|
|
_cogl_texture_driver_prep_gl_for_pixels_upload,
|
|
_cogl_texture_driver_upload_subregion_to_gl,
|
|
_cogl_texture_driver_upload_to_gl,
|
|
_cogl_texture_driver_upload_to_gl_3d,
|
|
_cogl_texture_driver_prep_gl_for_pixels_download,
|
|
_cogl_texture_driver_gl_get_tex_image,
|
|
_cogl_texture_driver_size_supported,
|
|
_cogl_texture_driver_size_supported_3d,
|
|
_cogl_texture_driver_try_setting_gl_border_color,
|
|
_cogl_texture_driver_allows_foreign_gl_target,
|
|
_cogl_texture_driver_gl_generate_mipmaps,
|
|
_cogl_texture_driver_find_best_gl_get_data_format
|
|
};
|