45288c5d6d
Use the HAVE_STRINGS_H check before we include strings.h, as it is not universally available. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit ff65144c84a16f9470d3f3931dc91cc9a6ef5938)
152 lines
4.7 KiB
C
152 lines
4.7 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) 2012 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#include "cogl-context-private.h"
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#include "cogl-util-gl-private.h"
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#include "cogl-texture-gl-private.h"
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#include "cogl-texture-3d-private.h"
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#include "cogl-util.h"
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#include "cogl-pipeline-opengl-private.h"
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static inline int
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calculate_alignment (int rowstride)
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{
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int alignment = 1 << (_cogl_util_ffs (rowstride) - 1);
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return MIN (alignment, 8);
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}
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void
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_cogl_texture_gl_prep_alignment_for_pixels_upload (CoglContext *ctx,
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int pixels_rowstride)
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{
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GE( ctx, glPixelStorei (GL_UNPACK_ALIGNMENT,
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calculate_alignment (pixels_rowstride)) );
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}
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void
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_cogl_texture_gl_prep_alignment_for_pixels_download (CoglContext *ctx,
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int bpp,
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int width,
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int rowstride)
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{
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int alignment;
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/* If no padding is needed then we can always use an alignment of 1.
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* We want to do this even though it is equivalent to the alignment
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* of the rowstride because the Intel driver in Mesa currently has
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* an optimisation when reading data into a PBO that only works if
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* the alignment is exactly 1.
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*
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* https://bugs.freedesktop.org/show_bug.cgi?id=46632
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*/
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if (rowstride == bpp * width)
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alignment = 1;
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else
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alignment = calculate_alignment (rowstride);
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GE( ctx, glPixelStorei (GL_PACK_ALIGNMENT, alignment) );
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}
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void
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_cogl_texture_gl_flush_legacy_texobj_wrap_modes (CoglTexture *texture,
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unsigned int wrap_mode_s,
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unsigned int wrap_mode_t,
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unsigned int wrap_mode_p)
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{
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texture->vtable->gl_flush_legacy_texobj_wrap_modes (texture,
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wrap_mode_s,
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wrap_mode_t,
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wrap_mode_p);
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}
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void
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_cogl_texture_gl_flush_legacy_texobj_filters (CoglTexture *texture,
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unsigned int min_filter,
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unsigned int mag_filter)
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{
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texture->vtable->gl_flush_legacy_texobj_filters (texture,
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min_filter, mag_filter);
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}
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void
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_cogl_texture_gl_maybe_update_max_level (CoglTexture *texture,
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int max_level)
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{
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/* This isn't supported on GLES */
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#ifdef HAVE_COGL_GL
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CoglContext *ctx = texture->context;
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if ((ctx->private_feature_flags & COGL_PRIVATE_FEATURE_TEXTURE_MAX_LEVEL) &&
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texture->max_level < max_level)
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{
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CoglContext *ctx = texture->context;
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GLuint gl_handle;
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GLenum gl_target;
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cogl_texture_get_gl_texture (texture, &gl_handle, &gl_target);
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texture->max_level = max_level;
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_cogl_bind_gl_texture_transient (gl_target,
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gl_handle,
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_cogl_texture_is_foreign (texture));
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GE( ctx, glTexParameteri (gl_target,
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GL_TEXTURE_MAX_LEVEL, texture->max_level));
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}
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#endif /* HAVE_COGL_GL */
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}
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void
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_cogl_texture_gl_generate_mipmaps (CoglTexture *texture)
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{
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CoglContext *ctx = texture->context;
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int n_levels = _cogl_texture_get_n_levels (texture);
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GLuint gl_handle;
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GLenum gl_target;
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_cogl_texture_gl_maybe_update_max_level (texture, n_levels - 1);
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cogl_texture_get_gl_texture (texture, &gl_handle, &gl_target);
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_cogl_bind_gl_texture_transient (gl_target,
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gl_handle,
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_cogl_texture_is_foreign (texture));
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GE( ctx, glGenerateMipmap (gl_target) );
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}
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GLenum
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_cogl_texture_gl_get_format (CoglTexture *texture)
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{
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return texture->vtable->get_gl_format (texture);
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}
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