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Diffstat (limited to 'cogl/cogl/cogl-blit.c')
| -rw-r--r-- | cogl/cogl/cogl-blit.c | 441 |
1 files changed, 0 insertions, 441 deletions
diff --git a/cogl/cogl/cogl-blit.c b/cogl/cogl/cogl-blit.c deleted file mode 100644 index 57922f736..000000000 --- a/cogl/cogl/cogl-blit.c +++ /dev/null @@ -1,441 +0,0 @@ -/* - * Cogl - * - * A Low Level GPU Graphics and Utilities API - * - * Copyright (C) 2011 Intel Corporation. - * Copyright (C) 2019 DisplayLink (UK) Ltd. - * - * Permission is hereby granted, free of charge, to any person - * obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, - * modify, merge, publish, distribute, sublicense, and/or sell copies - * of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - * Authors: - * Neil Roberts <neil@linux.intel.com> - */ - -#include "cogl-config.h" - -#include <string.h> - -#include "cogl-util.h" -#include "cogl-blit.h" -#include "cogl-context-private.h" -#include "cogl-framebuffer-private.h" -#include "cogl-texture-private.h" -#include "cogl-texture-2d-private.h" -#include "cogl-private.h" -#include "cogl1-context.h" - -static const CoglBlitMode *_cogl_blit_default_mode = NULL; - -static gboolean -_cogl_blit_texture_render_begin (CoglBlitData *data) -{ - CoglContext *ctx = data->src_tex->context; - CoglOffscreen *offscreen; - CoglFramebuffer *fb; - CoglPipeline *pipeline; - unsigned int dst_width, dst_height; - GError *ignore_error = NULL; - - offscreen = _cogl_offscreen_new_with_texture_full - (data->dst_tex, COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL, 0 /* level */); - - fb = COGL_FRAMEBUFFER (offscreen); - if (!cogl_framebuffer_allocate (fb, &ignore_error)) - { - g_error_free (ignore_error); - g_object_unref (fb); - return FALSE; - } - - data->dest_fb = fb; - - dst_width = cogl_texture_get_width (data->dst_tex); - dst_height = cogl_texture_get_height (data->dst_tex); - - /* Set up an orthographic projection so we can use pixel - coordinates to render to the texture */ - cogl_framebuffer_orthographic (fb, - 0, 0, dst_width, dst_height, - -1 /* near */, 1 /* far */); - - /* We cache a pipeline used for migrating on to the context so - that it doesn't have to continuously regenerate a shader - program */ - if (ctx->blit_texture_pipeline == NULL) - { - ctx->blit_texture_pipeline = cogl_pipeline_new (ctx); - - cogl_pipeline_set_layer_filters (ctx->blit_texture_pipeline, 0, - COGL_PIPELINE_FILTER_NEAREST, - COGL_PIPELINE_FILTER_NEAREST); - - /* Disable blending by just directly taking the contents of the - source texture */ - cogl_pipeline_set_blend (ctx->blit_texture_pipeline, - "RGBA = ADD(SRC_COLOR, 0)", - NULL); - } - - pipeline = ctx->blit_texture_pipeline; - - cogl_pipeline_set_layer_texture (pipeline, 0, data->src_tex); - - data->pipeline = pipeline; - - return TRUE; -} - -static void -_cogl_blit_texture_render_blit (CoglBlitData *data, - int src_x, - int src_y, - int dst_x, - int dst_y, - int width, - int height) -{ - cogl_framebuffer_draw_textured_rectangle (data->dest_fb, - data->pipeline, - dst_x, dst_y, - dst_x + width, - dst_y + height, - src_x / (float) data->src_width, - src_y / (float) data->src_height, - (src_x + width) / - (float) data->src_width, - (src_y + height) / - (float) data->src_height); -} - -static void -_cogl_blit_texture_render_end (CoglBlitData *data) -{ - CoglContext *ctx = data->src_tex->context; - - /* Attach the target texture to the texture render pipeline so that - we don't keep a reference to the source texture forever. This is - assuming that the destination texture will live for a long time - which is currently the case when cogl_blit_* is used from the - atlas code. It may be better in future to keep around a set of - dummy 1x1 textures for each texture target that we could bind - instead. This would also be useful when using a pipeline as a - hash table key such as for the ARBfp program cache. */ - cogl_pipeline_set_layer_texture (ctx->blit_texture_pipeline, 0, - data->dst_tex); - - g_object_unref (data->dest_fb); -} - -static gboolean -_cogl_blit_framebuffer_begin (CoglBlitData *data) -{ - CoglContext *ctx = data->src_tex->context; - CoglOffscreen *dst_offscreen = NULL, *src_offscreen = NULL; - CoglFramebuffer *dst_fb, *src_fb; - GError *ignore_error = NULL; - - /* We can only blit between FBOs if both textures have the same - premult convention and the blit framebuffer extension is - supported. */ - if ((_cogl_texture_get_format (data->src_tex) & COGL_PREMULT_BIT) != - (_cogl_texture_get_format (data->dst_tex) & COGL_PREMULT_BIT) || - !cogl_has_feature (ctx, COGL_FEATURE_ID_BLIT_FRAMEBUFFER)) - return FALSE; - - dst_offscreen = _cogl_offscreen_new_with_texture_full - (data->dst_tex, COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL, 0 /* level */); - - dst_fb = COGL_FRAMEBUFFER (dst_offscreen); - if (!cogl_framebuffer_allocate (dst_fb, &ignore_error)) - { - g_error_free (ignore_error); - goto error; - } - - src_offscreen= _cogl_offscreen_new_with_texture_full - (data->src_tex, - COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL, - 0 /* level */); - - src_fb = COGL_FRAMEBUFFER (src_offscreen); - if (!cogl_framebuffer_allocate (src_fb, &ignore_error)) - { - g_error_free (ignore_error); - goto error; - } - - data->src_fb = src_fb; - data->dest_fb = dst_fb; - - return TRUE; - -error: - - g_clear_object (&dst_offscreen); - g_clear_object (&src_offscreen); - - return FALSE; -} - -static void -_cogl_blit_framebuffer_blit (CoglBlitData *data, - int src_x, - int src_y, - int dst_x, - int dst_y, - int width, - int height) -{ - cogl_blit_framebuffer (data->src_fb, - data->dest_fb, - src_x, src_y, - dst_x, dst_y, - width, height, - NULL); -} - -static void -_cogl_blit_framebuffer_end (CoglBlitData *data) -{ - g_object_unref (data->src_fb); - g_object_unref (data->dest_fb); -} - -static gboolean -_cogl_blit_copy_tex_sub_image_begin (CoglBlitData *data) -{ - CoglOffscreen *offscreen; - CoglFramebuffer *fb; - GError *ignore_error = NULL; - - /* This will only work if the target texture is a CoglTexture2D */ - if (!cogl_is_texture_2d (data->dst_tex)) - return FALSE; - - offscreen = _cogl_offscreen_new_with_texture_full - (data->src_tex, COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL, 0 /* level */); - - fb = COGL_FRAMEBUFFER (offscreen); - if (!cogl_framebuffer_allocate (fb, &ignore_error)) - { - g_error_free (ignore_error); - g_object_unref (fb); - return FALSE; - } - - data->src_fb = fb; - - return TRUE; -} - -static void -_cogl_blit_copy_tex_sub_image_blit (CoglBlitData *data, - int src_x, - int src_y, - int dst_x, - int dst_y, - int width, - int height) -{ - _cogl_texture_2d_copy_from_framebuffer (COGL_TEXTURE_2D (data->dst_tex), - src_x, src_y, - width, height, - data->src_fb, - dst_x, dst_y, - 0); /* level */ -} - -static void -_cogl_blit_copy_tex_sub_image_end (CoglBlitData *data) -{ - g_object_unref (data->src_fb); -} - -static gboolean -_cogl_blit_get_tex_data_begin (CoglBlitData *data) -{ - data->format = _cogl_texture_get_format (data->src_tex); - - g_return_val_if_fail (cogl_pixel_format_get_n_planes (data->format) == 1, - FALSE); - - data->bpp = cogl_pixel_format_get_bytes_per_pixel (data->format, 0); - - data->image_data = g_malloc (data->bpp * data->src_width * - data->src_height); - cogl_texture_get_data (data->src_tex, data->format, - data->src_width * data->bpp, data->image_data); - - return TRUE; -} - -static void -_cogl_blit_get_tex_data_blit (CoglBlitData *data, - int src_x, - int src_y, - int dst_x, - int dst_y, - int width, - int height) -{ - GError *ignore = NULL; - int rowstride = data->src_width * data->bpp; - int offset = rowstride * src_y + src_x * data->bpp; - - _cogl_texture_set_region (data->dst_tex, - width, height, - data->format, - rowstride, - data->image_data + offset, - dst_x, dst_y, - 0, /* level */ - &ignore); - /* TODO: support chaining up errors during the blit */ -} - -static void -_cogl_blit_get_tex_data_end (CoglBlitData *data) -{ - g_free (data->image_data); -} - -/* These should be specified in order of preference */ -static const CoglBlitMode -_cogl_blit_modes[] = - { - { - "texture-render", - _cogl_blit_texture_render_begin, - _cogl_blit_texture_render_blit, - _cogl_blit_texture_render_end - }, - { - "framebuffer", - _cogl_blit_framebuffer_begin, - _cogl_blit_framebuffer_blit, - _cogl_blit_framebuffer_end - }, - { - "copy-tex-sub-image", - _cogl_blit_copy_tex_sub_image_begin, - _cogl_blit_copy_tex_sub_image_blit, - _cogl_blit_copy_tex_sub_image_end - }, - { - "get-tex-data", - _cogl_blit_get_tex_data_begin, - _cogl_blit_get_tex_data_blit, - _cogl_blit_get_tex_data_end - } - }; - -void -_cogl_blit_begin (CoglBlitData *data, - CoglTexture *dst_tex, - CoglTexture *src_tex) -{ - int i; - - if (_cogl_blit_default_mode == NULL) - { - const char *default_mode_string; - - /* Allow the default to be specified with an environment - variable. For the time being these functions are only used - when blitting between atlas textures so the environment - variable is named to be specific to the atlas code. If we - want to use the code in other places we should create another - environment variable for each specific use case */ - if ((default_mode_string = g_getenv ("COGL_ATLAS_DEFAULT_BLIT_MODE"))) - { - for (i = 0; i < G_N_ELEMENTS (_cogl_blit_modes); i++) - if (!strcmp (_cogl_blit_modes[i].name, default_mode_string)) - { - _cogl_blit_default_mode = _cogl_blit_modes + i; - break; - } - - if (i >= G_N_ELEMENTS (_cogl_blit_modes)) - { - g_warning ("Unknown blit mode %s", default_mode_string); - _cogl_blit_default_mode = _cogl_blit_modes; - } - } - else - /* Default to the first blit mode */ - _cogl_blit_default_mode = _cogl_blit_modes; - } - - memset (data, 0, sizeof (CoglBlitData)); - - data->dst_tex = dst_tex; - data->src_tex = src_tex; - - data->src_width = cogl_texture_get_width (src_tex); - data->src_height = cogl_texture_get_height (src_tex); - - /* Try the default blit mode first */ - if (!_cogl_blit_default_mode->begin_func (data)) - { - COGL_NOTE (ATLAS, "Failed to set up blit mode %s", - _cogl_blit_default_mode->name); - - /* Try all of the other modes in order */ - for (i = 0; i < G_N_ELEMENTS (_cogl_blit_modes); i++) - if (_cogl_blit_modes + i != _cogl_blit_default_mode && - _cogl_blit_modes[i].begin_func (data)) - { - /* Use this mode as the default from now on */ - _cogl_blit_default_mode = _cogl_blit_modes + i; - break; - } - else - COGL_NOTE (ATLAS, - "Failed to set up blit mode %s", - _cogl_blit_modes[i].name); - - /* The last blit mode can't fail so this should never happen */ - g_return_if_fail (i < G_N_ELEMENTS (_cogl_blit_modes)); - } - - data->blit_mode = _cogl_blit_default_mode; - - COGL_NOTE (ATLAS, "Setup blit using %s", _cogl_blit_default_mode->name); -} - -void -_cogl_blit (CoglBlitData *data, - int src_x, - int src_y, - int dst_x, - int dst_y, - int width, - int height) -{ - data->blit_mode->blit_func (data, src_x, src_y, dst_x, dst_y, width, height); -} - -void -_cogl_blit_end (CoglBlitData *data) -{ - data->blit_mode->end_func (data); -} |