5442e429ba
In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
574 lines
18 KiB
C
574 lines
18 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) 2009 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.h"
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#include "cogl-internal.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-2d-private.h"
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#include "cogl-texture-driver.h"
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#include "cogl-context.h"
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#include "cogl-handle.h"
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#include "cogl-journal-private.h"
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#include "cogl-material-opengl-private.h"
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#include <string.h>
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#include <math.h>
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static void _cogl_texture_2d_free (CoglTexture2D *tex_2d);
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COGL_TEXTURE_INTERNAL_DEFINE (Texture2D, texture_2d);
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static const CoglTextureVtable cogl_texture_2d_vtable;
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typedef struct _CoglTexture2DManualRepeatData
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{
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CoglTexture2D *tex_2d;
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CoglTextureSliceCallback callback;
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void *user_data;
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} CoglTexture2DManualRepeatData;
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static void
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_cogl_texture_2d_wrap_coords (float t_1, float t_2,
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float *out_t_1, float *out_t_2)
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{
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float int_part;
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/* Wrap t_1 and t_2 to the range [0,1] */
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modff (t_1 < t_2 ? t_1 : t_2, &int_part);
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t_1 -= int_part;
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t_2 -= int_part;
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if (cogl_util_float_signbit (int_part))
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{
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*out_t_1 = 1.0f + t_1;
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*out_t_2 = 1.0f + t_2;
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}
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else
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{
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*out_t_1 = t_1;
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*out_t_2 = t_2;
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}
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}
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static void
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_cogl_texture_2d_manual_repeat_cb (const float *coords,
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void *user_data)
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{
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CoglTexture2DManualRepeatData *data = user_data;
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float slice_coords[4];
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_cogl_texture_2d_wrap_coords (coords[0], coords[2],
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slice_coords + 0, slice_coords + 2);
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_cogl_texture_2d_wrap_coords (coords[1], coords[3],
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slice_coords + 1, slice_coords + 3);
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data->callback (COGL_TEXTURE (data->tex_2d),
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data->tex_2d->gl_texture,
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GL_TEXTURE_2D,
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slice_coords,
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coords,
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data->user_data);
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}
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static void
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_cogl_texture_2d_foreach_sub_texture_in_region (
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CoglTexture *tex,
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float virtual_tx_1,
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float virtual_ty_1,
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float virtual_tx_2,
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float virtual_ty_2,
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CoglTextureSliceCallback callback,
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void *user_data)
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{
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CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
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CoglTexture2DManualRepeatData data;
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data.tex_2d = tex_2d;
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data.callback = callback;
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data.user_data = user_data;
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/* We need to implement manual repeating because if Cogl is calling
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this function then it will set the wrap mode to GL_CLAMP_TO_EDGE
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and hardware repeating can't be done */
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_cogl_texture_iterate_manual_repeats (_cogl_texture_2d_manual_repeat_cb,
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virtual_tx_1, virtual_ty_1,
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virtual_tx_2, virtual_ty_2,
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&data);
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}
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static void
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_cogl_texture_2d_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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CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
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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 2D doesn't make use of the r
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coordinate so we can ignore its wrap mode */
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if (tex_2d->wrap_mode_s != wrap_mode_s ||
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tex_2d->wrap_mode_t != wrap_mode_t)
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{
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_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
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tex_2d->gl_texture,
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FALSE);
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GE( glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrap_mode_s) );
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GE( glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrap_mode_t) );
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tex_2d->wrap_mode_s = wrap_mode_s;
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tex_2d->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_2d_free (CoglTexture2D *tex_2d)
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{
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_cogl_delete_gl_texture (tex_2d->gl_texture);
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/* Chain up */
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_cogl_texture_free (COGL_TEXTURE (tex_2d));
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}
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static gboolean
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_cogl_texture_2d_can_create (unsigned int width,
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unsigned int height,
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CoglPixelFormat internal_format)
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{
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GLenum gl_intformat;
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GLenum gl_type;
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/* If NPOT textures aren't supported then the size must be a power
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of two */
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if (!cogl_features_available (COGL_FEATURE_TEXTURE_NPOT) &&
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(!_cogl_util_is_pot (width) ||
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!_cogl_util_is_pot (height)))
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return FALSE;
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_cogl_pixel_format_to_gl (internal_format,
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&gl_intformat,
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NULL,
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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 (!_cogl_texture_driver_size_supported (GL_TEXTURE_2D,
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gl_intformat,
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gl_type,
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width,
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height))
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return FALSE;
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return TRUE;
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}
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static CoglTexture2D *
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_cogl_texture_2d_create_base (unsigned int width,
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unsigned int height,
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CoglTextureFlags flags,
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CoglPixelFormat internal_format)
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{
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CoglTexture2D *tex_2d = g_new (CoglTexture2D, 1);
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CoglTexture *tex = COGL_TEXTURE (tex_2d);
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tex->vtable = &cogl_texture_2d_vtable;
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tex_2d->width = width;
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tex_2d->height = height;
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tex_2d->mipmaps_dirty = TRUE;
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tex_2d->auto_mipmap = (flags & COGL_TEXTURE_NO_AUTO_MIPMAP) == 0;
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/* We default to GL_LINEAR for both filters */
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tex_2d->min_filter = GL_LINEAR;
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tex_2d->mag_filter = GL_LINEAR;
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/* Wrap mode not yet set */
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tex_2d->wrap_mode_s = GL_FALSE;
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tex_2d->wrap_mode_t = GL_FALSE;
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tex_2d->format = internal_format;
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return tex_2d;
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}
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CoglHandle
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_cogl_texture_2d_new_with_size (unsigned int width,
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unsigned int height,
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CoglTextureFlags flags,
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CoglPixelFormat internal_format)
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{
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CoglTexture2D *tex_2d;
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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_2d_can_create (width, height, internal_format))
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return COGL_INVALID_HANDLE;
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internal_format = _cogl_pixel_format_to_gl (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_2d = _cogl_texture_2d_create_base (width, height, flags, internal_format);
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_cogl_texture_driver_gen (GL_TEXTURE_2D, 1, &tex_2d->gl_texture);
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_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
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tex_2d->gl_texture,
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FALSE);
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GE( glTexImage2D (GL_TEXTURE_2D, 0, gl_intformat,
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width, height, 0, gl_format, gl_type, NULL) );
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return _cogl_texture_2d_handle_new (tex_2d);
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}
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CoglHandle
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_cogl_texture_2d_new_from_bitmap (CoglHandle bmp_handle,
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CoglTextureFlags flags,
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CoglPixelFormat internal_format)
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{
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CoglTexture2D *tex_2d;
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CoglBitmap *bmp = (CoglBitmap *)bmp_handle;
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CoglBitmap dst_bmp;
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gboolean dst_bmp_owner;
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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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g_return_val_if_fail (bmp_handle != COGL_INVALID_HANDLE, COGL_INVALID_HANDLE);
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internal_format = _cogl_texture_determine_internal_format (bmp->format,
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internal_format);
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if (!_cogl_texture_2d_can_create (bmp->width, bmp->height, internal_format))
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return COGL_INVALID_HANDLE;
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if (!_cogl_texture_prepare_for_upload (bmp,
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internal_format,
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&internal_format,
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&dst_bmp,
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&dst_bmp_owner,
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&gl_intformat,
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&gl_format,
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&gl_type))
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return COGL_INVALID_HANDLE;
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tex_2d = _cogl_texture_2d_create_base (bmp->width,
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bmp->height,
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flags,
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internal_format);
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/* Keep a copy of the first pixel so that if glGenerateMipmap isn't
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supported we can fallback to using GL_GENERATE_MIPMAP */
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tex_2d->first_pixel.gl_format = gl_format;
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tex_2d->first_pixel.gl_type = gl_type;
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memcpy (tex_2d->first_pixel.data, dst_bmp.data,
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_cogl_get_format_bpp (dst_bmp.format));
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_cogl_texture_driver_gen (GL_TEXTURE_2D, 1, &tex_2d->gl_texture);
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_cogl_texture_driver_upload_to_gl (GL_TEXTURE_2D,
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tex_2d->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_2d->gl_format = gl_intformat;
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if (dst_bmp_owner)
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g_free (dst_bmp.data);
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return _cogl_texture_2d_handle_new (tex_2d);
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}
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void
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_cogl_texture_2d_externally_modified (CoglHandle handle)
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{
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if (!_cogl_is_texture_2d (handle))
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return;
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COGL_TEXTURE_2D (handle)->mipmaps_dirty = TRUE;
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}
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static int
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_cogl_texture_2d_get_max_waste (CoglTexture *tex)
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{
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return -1;
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}
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static gboolean
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_cogl_texture_2d_is_sliced (CoglTexture *tex)
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{
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return FALSE;
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}
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static gboolean
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_cogl_texture_2d_can_hardware_repeat (CoglTexture *tex)
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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_2d_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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/* The texture coordinates map directly so we don't need to do
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anything */
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}
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static CoglTransformResult
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_cogl_texture_2d_transform_quad_coords_to_gl (CoglTexture *tex,
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float *coords)
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{
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/* The texture coordinates map directly so we don't need to do
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anything other than check for repeats */
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gboolean need_repeat = FALSE;
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int i;
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for (i = 0; i < 4; i++)
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if (coords[i] < 0.0f || coords[i] > 1.0f)
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need_repeat = TRUE;
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return (need_repeat ? COGL_TRANSFORM_HARDWARE_REPEAT
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: COGL_TRANSFORM_NO_REPEAT);
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}
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static gboolean
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_cogl_texture_2d_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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CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
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if (out_gl_handle)
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*out_gl_handle = tex_2d->gl_texture;
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if (out_gl_target)
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*out_gl_target = GL_TEXTURE_2D;
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return TRUE;
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}
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static void
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_cogl_texture_2d_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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CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
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if (min_filter == tex_2d->min_filter
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&& mag_filter == tex_2d->mag_filter)
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return;
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/* Store new values */
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tex_2d->min_filter = min_filter;
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tex_2d->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_2D,
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tex_2d->gl_texture,
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FALSE);
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GE( glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter) );
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GE( glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter) );
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}
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static void
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_cogl_texture_2d_pre_paint (CoglTexture *tex, CoglTexturePrePaintFlags flags)
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{
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CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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/* Only update if the mipmaps are dirty */
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if ((flags & COGL_TEXTURE_NEEDS_MIPMAP) &&
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tex_2d->auto_mipmap && tex_2d->mipmaps_dirty)
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{
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_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
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tex_2d->gl_texture,
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FALSE);
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/* glGenerateMipmap is defined in the FBO extension. If it's not
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available we'll fallback to temporarily enabling
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GL_GENERATE_MIPMAP and reuploading the first pixel */
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if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
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_cogl_texture_driver_gl_generate_mipmaps (GL_TEXTURE_2D);
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else
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{
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GE( glTexParameteri (GL_TEXTURE_2D,
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GL_GENERATE_MIPMAP,
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GL_TRUE) );
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GE( glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, 1, 1,
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tex_2d->first_pixel.gl_format,
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tex_2d->first_pixel.gl_type,
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tex_2d->first_pixel.data) );
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GE( glTexParameteri (GL_TEXTURE_2D,
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GL_GENERATE_MIPMAP,
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GL_FALSE) );
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}
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tex_2d->mipmaps_dirty = FALSE;
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}
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}
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static void
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_cogl_texture_2d_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 gboolean
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_cogl_texture_2d_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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CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
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GLenum gl_format;
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GLenum gl_type;
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_cogl_pixel_format_to_gl (bmp->format,
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NULL, /* internal format */
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&gl_format,
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&gl_type);
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/* If this touches the first pixel then we'll update our copy */
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if (dst_x == 0 && dst_y == 0)
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{
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CoglPixelFormat bpp = _cogl_get_format_bpp (bmp->format);
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tex_2d->first_pixel.gl_format = gl_format;
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tex_2d->first_pixel.gl_type = gl_type;
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memcpy (tex_2d->first_pixel.data,
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bmp->data + bmp->rowstride * src_y + bpp * src_x,
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bpp);
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}
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/* Send data to GL */
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_cogl_texture_driver_upload_subregion_to_gl (GL_TEXTURE_2D,
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tex_2d->gl_texture,
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FALSE,
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src_x, src_y,
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dst_x, dst_y,
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dst_width, dst_height,
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bmp,
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gl_format,
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gl_type);
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tex_2d->mipmaps_dirty = TRUE;
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return TRUE;
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}
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static gboolean
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_cogl_texture_2d_get_data (CoglTexture *tex,
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CoglPixelFormat format,
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unsigned int rowstride,
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guint8 *data)
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{
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CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
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int bpp;
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GLenum gl_format;
|
|
GLenum gl_type;
|
|
|
|
bpp = _cogl_get_format_bpp (format);
|
|
|
|
_cogl_pixel_format_to_gl (format,
|
|
NULL, /* internal format */
|
|
&gl_format,
|
|
&gl_type);
|
|
|
|
_cogl_texture_driver_prep_gl_for_pixels_download (rowstride, bpp);
|
|
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
|
|
tex_2d->gl_texture,
|
|
FALSE);
|
|
return _cogl_texture_driver_gl_get_tex_image (GL_TEXTURE_2D,
|
|
gl_format,
|
|
gl_type,
|
|
data);
|
|
}
|
|
|
|
static CoglPixelFormat
|
|
_cogl_texture_2d_get_format (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_2D (tex)->format;
|
|
}
|
|
|
|
static GLenum
|
|
_cogl_texture_2d_get_gl_format (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_2D (tex)->gl_format;
|
|
}
|
|
|
|
static int
|
|
_cogl_texture_2d_get_width (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_2D (tex)->width;
|
|
}
|
|
|
|
static int
|
|
_cogl_texture_2d_get_height (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_2D (tex)->height;
|
|
}
|
|
|
|
static const CoglTextureVtable
|
|
cogl_texture_2d_vtable =
|
|
{
|
|
_cogl_texture_2d_set_region,
|
|
_cogl_texture_2d_get_data,
|
|
_cogl_texture_2d_foreach_sub_texture_in_region,
|
|
_cogl_texture_2d_get_max_waste,
|
|
_cogl_texture_2d_is_sliced,
|
|
_cogl_texture_2d_can_hardware_repeat,
|
|
_cogl_texture_2d_transform_coords_to_gl,
|
|
_cogl_texture_2d_transform_quad_coords_to_gl,
|
|
_cogl_texture_2d_get_gl_texture,
|
|
_cogl_texture_2d_set_filters,
|
|
_cogl_texture_2d_pre_paint,
|
|
_cogl_texture_2d_ensure_non_quad_rendering,
|
|
_cogl_texture_2d_set_wrap_mode_parameters,
|
|
_cogl_texture_2d_get_format,
|
|
_cogl_texture_2d_get_gl_format,
|
|
_cogl_texture_2d_get_width,
|
|
_cogl_texture_2d_get_height,
|
|
NULL /* is_foreign */
|
|
};
|