diff options
Diffstat (limited to 'cogl/cogl/driver/gl/cogl-gl-framebuffer-fbo.c')
| -rw-r--r-- | cogl/cogl/driver/gl/cogl-gl-framebuffer-fbo.c | 659 |
1 files changed, 0 insertions, 659 deletions
diff --git a/cogl/cogl/driver/gl/cogl-gl-framebuffer-fbo.c b/cogl/cogl/driver/gl/cogl-gl-framebuffer-fbo.c deleted file mode 100644 index c8db6a23a..000000000 --- a/cogl/cogl/driver/gl/cogl-gl-framebuffer-fbo.c +++ /dev/null @@ -1,659 +0,0 @@ -/* - * Copyright (C) 2007,2008,2009,2012 Intel Corporation. - * Copyright (C) 2018 DisplayLink (UK) Ltd. - * Copyright (C) 2020 Red Hat - * - * 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. - * - */ - -#include "cogl-config.h" - -#include "driver/gl/cogl-gl-framebuffer-fbo.h" - -#include <gio/gio.h> - -#include "cogl-context-private.h" -#include "cogl-framebuffer-private.h" -#include "cogl-offscreen-private.h" -#include "driver/gl/cogl-texture-gl-private.h" -#include "driver/gl/cogl-util-gl-private.h" - -typedef struct _CoglGlFbo -{ - GLuint fbo_handle; - GList *renderbuffers; - int samples_per_pixel; -} CoglGlFbo; - -struct _CoglGlFramebufferFbo -{ - CoglGlFramebuffer parent; - - CoglGlFbo gl_fbo; - - gboolean dirty_bitmasks; - CoglFramebufferBits bits; -}; - -G_DEFINE_TYPE (CoglGlFramebufferFbo, cogl_gl_framebuffer_fbo, - COGL_TYPE_GL_FRAMEBUFFER) - -static gboolean -ensure_bits_initialized (CoglGlFramebufferFbo *gl_framebuffer_fbo) -{ - CoglFramebufferDriver *driver = COGL_FRAMEBUFFER_DRIVER (gl_framebuffer_fbo); - CoglFramebuffer *framebuffer = - cogl_framebuffer_driver_get_framebuffer (driver); - CoglContext *ctx = cogl_framebuffer_get_context (framebuffer); - CoglFramebufferBits *bits = &gl_framebuffer_fbo->bits; - g_autoptr (GError) error = NULL; - - if (!gl_framebuffer_fbo->dirty_bitmasks) - return TRUE; - - cogl_context_flush_framebuffer_state (ctx, - framebuffer, - framebuffer, - COGL_FRAMEBUFFER_STATE_BIND); - -#ifdef HAVE_COGL_GL - if (!_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_QUERY_FRAMEBUFFER_BITS)) - { - const struct { - GLenum attachment, pname; - size_t offset; - } params[] = { - { - .attachment = GL_COLOR_ATTACHMENT0, - .pname = GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE, - .offset = offsetof (CoglFramebufferBits, red), - }, - { - .attachment = GL_COLOR_ATTACHMENT0, - .pname = GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE, - .offset = offsetof (CoglFramebufferBits, green), - }, - { - .attachment = GL_COLOR_ATTACHMENT0, - .pname = GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE, - .offset = offsetof (CoglFramebufferBits, blue), - }, - { - .attachment = GL_COLOR_ATTACHMENT0, - .pname = GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE, - .offset = offsetof (CoglFramebufferBits, alpha), - }, - { - .attachment = GL_DEPTH_ATTACHMENT, - .pname = GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE, - .offset = offsetof (CoglFramebufferBits, depth), - }, - { - .attachment = GL_STENCIL_ATTACHMENT, - .pname = GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE, - .offset = offsetof (CoglFramebufferBits, stencil), - }, - }; - int i; - - for (i = 0; i < G_N_ELEMENTS (params); i++) - { - int *value = - (int *) ((uint8_t *) bits + params[i].offset); - - GE (ctx, glGetFramebufferAttachmentParameteriv (GL_FRAMEBUFFER, - params[i].attachment, - params[i].pname, - value)); - } - } - else -#endif /* HAVE_COGL_GL */ - { - GE (ctx, glGetIntegerv (GL_RED_BITS, &bits->red)); - GE (ctx, glGetIntegerv (GL_GREEN_BITS, &bits->green)); - GE (ctx, glGetIntegerv (GL_BLUE_BITS, &bits->blue)); - GE (ctx, glGetIntegerv (GL_ALPHA_BITS, &bits->alpha)); - GE (ctx, glGetIntegerv (GL_DEPTH_BITS, &bits->depth)); - GE (ctx, glGetIntegerv (GL_STENCIL_BITS, &bits->stencil)); - } - - if (!_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_ALPHA_TEXTURES) && - (cogl_framebuffer_get_internal_format (framebuffer) == - COGL_PIXEL_FORMAT_A_8)) - { - bits->alpha = bits->red; - bits->red = 0; - } - - COGL_NOTE (FRAMEBUFFER, - "RGBA/D/S Bits for framebuffer[%p, %s]: %d, %d, %d, %d, %d, %d", - framebuffer, - G_OBJECT_TYPE_NAME (framebuffer), - bits->red, - bits->blue, - bits->green, - bits->alpha, - bits->depth, - bits->stencil); - - gl_framebuffer_fbo->dirty_bitmasks = FALSE; - - return TRUE; -} - -static void -cogl_gl_framebuffer_fbo_query_bits (CoglFramebufferDriver *driver, - CoglFramebufferBits *bits) -{ - CoglGlFramebufferFbo *gl_framebuffer_fbo = COGL_GL_FRAMEBUFFER_FBO (driver); - - if (!ensure_bits_initialized (gl_framebuffer_fbo)) - return; - - *bits = gl_framebuffer_fbo->bits; -} - -static void -cogl_gl_framebuffer_fbo_discard_buffers (CoglFramebufferDriver *driver, - unsigned long buffers) -{ - CoglFramebuffer *framebuffer = - cogl_framebuffer_driver_get_framebuffer (driver); - CoglContext *ctx = cogl_framebuffer_get_context (framebuffer); - GLenum attachments[3]; - int i = 0; - - if (!ctx->glDiscardFramebuffer) - return; - - if (buffers & COGL_BUFFER_BIT_COLOR) - attachments[i++] = GL_COLOR_ATTACHMENT0; - if (buffers & COGL_BUFFER_BIT_DEPTH) - attachments[i++] = GL_DEPTH_ATTACHMENT; - if (buffers & COGL_BUFFER_BIT_STENCIL) - attachments[i++] = GL_STENCIL_ATTACHMENT; - - cogl_context_flush_framebuffer_state (ctx, - framebuffer, - framebuffer, - COGL_FRAMEBUFFER_STATE_BIND); - GE (ctx, glDiscardFramebuffer (GL_FRAMEBUFFER, i, attachments)); -} - -static void -cogl_gl_framebuffer_fbo_bind (CoglGlFramebuffer *gl_framebuffer, - GLenum target) -{ - CoglGlFramebufferFbo *gl_framebuffer_fbo = - COGL_GL_FRAMEBUFFER_FBO (gl_framebuffer); - CoglFramebufferDriver *driver = COGL_FRAMEBUFFER_DRIVER (gl_framebuffer_fbo); - CoglFramebuffer *framebuffer = - cogl_framebuffer_driver_get_framebuffer (driver); - CoglContext *ctx = cogl_framebuffer_get_context (framebuffer); - - GE (ctx, glBindFramebuffer (target, gl_framebuffer_fbo->gl_fbo.fbo_handle)); -} - -static void -cogl_gl_framebuffer_fbo_flush_stereo_mode_state (CoglGlFramebuffer *gl_framebuffer) -{ - CoglFramebufferDriver *driver = COGL_FRAMEBUFFER_DRIVER (gl_framebuffer); - CoglFramebuffer *framebuffer = - cogl_framebuffer_driver_get_framebuffer (driver); - - switch (cogl_framebuffer_get_stereo_mode (framebuffer)) - { - case COGL_STEREO_BOTH: - break; - case COGL_STEREO_LEFT: - case COGL_STEREO_RIGHT: - g_warn_if_reached (); - break; - } -} - -static GList * -try_creating_renderbuffers (CoglContext *ctx, - int width, - int height, - CoglOffscreenAllocateFlags flags, - int n_samples) -{ - GList *renderbuffers = NULL; - GLuint gl_depth_stencil_handle; - - if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH_STENCIL) - { - GLenum format; - - /* WebGL adds a GL_DEPTH_STENCIL_ATTACHMENT and requires that we - * use the GL_DEPTH_STENCIL format. */ - /* Although GL_OES_packed_depth_stencil is mostly equivalent to - * GL_EXT_packed_depth_stencil, one notable difference is that - * GL_OES_packed_depth_stencil doesn't allow GL_DEPTH_STENCIL to - * be passed as an internal format to glRenderbufferStorage. - */ - if (_cogl_has_private_feature - (ctx, COGL_PRIVATE_FEATURE_EXT_PACKED_DEPTH_STENCIL)) - format = GL_DEPTH_STENCIL; - else - { - g_return_val_if_fail ( - _cogl_has_private_feature (ctx, - COGL_PRIVATE_FEATURE_OES_PACKED_DEPTH_STENCIL), - NULL); - format = GL_DEPTH24_STENCIL8; - } - - /* Create a renderbuffer for depth and stenciling */ - GE (ctx, glGenRenderbuffers (1, &gl_depth_stencil_handle)); - GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, gl_depth_stencil_handle)); - if (n_samples) - GE (ctx, glRenderbufferStorageMultisampleIMG (GL_RENDERBUFFER, - n_samples, - format, - width, height)); - else - GE (ctx, glRenderbufferStorage (GL_RENDERBUFFER, format, - width, height)); - GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, 0)); - - - GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER, - GL_STENCIL_ATTACHMENT, - GL_RENDERBUFFER, - gl_depth_stencil_handle)); - GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER, - GL_DEPTH_ATTACHMENT, - GL_RENDERBUFFER, - gl_depth_stencil_handle)); - renderbuffers = - g_list_prepend (renderbuffers, - GUINT_TO_POINTER (gl_depth_stencil_handle)); - } - - if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH) - { - GLuint gl_depth_handle; - - GE (ctx, glGenRenderbuffers (1, &gl_depth_handle)); - GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, gl_depth_handle)); - /* For now we just ask for GL_DEPTH_COMPONENT16 since this is all that's - * available under GLES */ - if (n_samples) - GE (ctx, glRenderbufferStorageMultisampleIMG (GL_RENDERBUFFER, - n_samples, - GL_DEPTH_COMPONENT16, - width, height)); - else - GE (ctx, glRenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, - width, height)); - GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, 0)); - GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER, - GL_DEPTH_ATTACHMENT, - GL_RENDERBUFFER, gl_depth_handle)); - renderbuffers = - g_list_prepend (renderbuffers, GUINT_TO_POINTER (gl_depth_handle)); - } - - if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL) - { - GLuint gl_stencil_handle; - - GE (ctx, glGenRenderbuffers (1, &gl_stencil_handle)); - GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, gl_stencil_handle)); - if (n_samples) - GE (ctx, glRenderbufferStorageMultisampleIMG (GL_RENDERBUFFER, - n_samples, - GL_STENCIL_INDEX8, - width, height)); - else - GE (ctx, glRenderbufferStorage (GL_RENDERBUFFER, GL_STENCIL_INDEX8, - width, height)); - GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, 0)); - GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER, - GL_STENCIL_ATTACHMENT, - GL_RENDERBUFFER, gl_stencil_handle)); - renderbuffers = - g_list_prepend (renderbuffers, GUINT_TO_POINTER (gl_stencil_handle)); - } - - return renderbuffers; -} - -static void -delete_renderbuffers (CoglContext *ctx, - GList *renderbuffers) -{ - GList *l; - - for (l = renderbuffers; l; l = l->next) - { - GLuint renderbuffer = GPOINTER_TO_UINT (l->data); - GE (ctx, glDeleteRenderbuffers (1, &renderbuffer)); - } - - g_list_free (renderbuffers); -} - -/* - * NB: This function may be called with a standalone GLES2 context - * bound so we can create a shadow framebuffer that wraps the same - * CoglTexture as the given CoglOffscreen. This function shouldn't - * modify anything in - */ -static gboolean -try_creating_fbo (CoglContext *ctx, - CoglTexture *texture, - int texture_level, - int texture_level_width, - int texture_level_height, - const CoglFramebufferConfig *config, - CoglOffscreenAllocateFlags flags, - CoglGlFbo *gl_fbo) -{ - GLuint tex_gl_handle; - GLenum tex_gl_target; - GLenum status; - int n_samples; - - if (!cogl_texture_get_gl_texture (texture, &tex_gl_handle, &tex_gl_target)) - return FALSE; - - if (tex_gl_target != GL_TEXTURE_2D -#ifdef HAVE_COGL_GL - && tex_gl_target != GL_TEXTURE_RECTANGLE_ARB -#endif - ) - return FALSE; - - if (config->samples_per_pixel) - { - if (!ctx->glFramebufferTexture2DMultisampleIMG) - return FALSE; - n_samples = config->samples_per_pixel; - } - else - n_samples = 0; - - /* We are about to generate and bind a new fbo, so we pretend to - * change framebuffer state so that the old framebuffer will be - * rebound again before drawing. */ - ctx->current_draw_buffer_changes |= COGL_FRAMEBUFFER_STATE_BIND; - - /* Generate framebuffer */ - ctx->glGenFramebuffers (1, &gl_fbo->fbo_handle); - GE (ctx, glBindFramebuffer (GL_FRAMEBUFFER, gl_fbo->fbo_handle)); - - if (n_samples) - { - GE (ctx, glFramebufferTexture2DMultisampleIMG (GL_FRAMEBUFFER, - GL_COLOR_ATTACHMENT0, - tex_gl_target, tex_gl_handle, - n_samples, - texture_level)); - } - else - GE (ctx, glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, - tex_gl_target, tex_gl_handle, - texture_level)); - - if (flags) - { - gl_fbo->renderbuffers = - try_creating_renderbuffers (ctx, - texture_level_width, - texture_level_height, - flags, - n_samples); - } - - /* Make sure it's complete */ - status = ctx->glCheckFramebufferStatus (GL_FRAMEBUFFER); - - if (status != GL_FRAMEBUFFER_COMPLETE) - { - GE (ctx, glDeleteFramebuffers (1, &gl_fbo->fbo_handle)); - - delete_renderbuffers (ctx, gl_fbo->renderbuffers); - gl_fbo->renderbuffers = NULL; - - return FALSE; - } - - /* Update the real number of samples_per_pixel now that we have a - * complete framebuffer */ - if (n_samples) - { - GLenum attachment = GL_COLOR_ATTACHMENT0; - GLenum pname = GL_TEXTURE_SAMPLES_IMG; - int texture_samples; - - GE( ctx, glGetFramebufferAttachmentParameteriv (GL_FRAMEBUFFER, - attachment, - pname, - &texture_samples) ); - gl_fbo->samples_per_pixel = texture_samples; - } - - return TRUE; -} - -CoglGlFramebufferFbo * -cogl_gl_framebuffer_fbo_new (CoglFramebuffer *framebuffer, - const CoglFramebufferDriverConfig *driver_config, - GError **error) -{ - CoglContext *context = cogl_framebuffer_get_context (framebuffer); - CoglOffscreen *offscreen; - CoglTexture *texture; - int texture_level; - int level_width; - int level_height; - const CoglFramebufferConfig *config; - CoglGlFbo *gl_fbo; - CoglGlFramebufferFbo *gl_framebuffer_fbo; - CoglOffscreenAllocateFlags allocate_flags; - - if (!COGL_IS_OFFSCREEN (framebuffer)) - { - g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, - "Incompatible framebuffer"); - return NULL; - } - - offscreen = COGL_OFFSCREEN (framebuffer); - texture = cogl_offscreen_get_texture (offscreen); - texture_level = cogl_offscreen_get_texture_level (offscreen); - - g_return_val_if_fail (texture_level < _cogl_texture_get_n_levels (texture), - NULL); - - _cogl_texture_get_level_size (texture, - texture_level, - &level_width, - &level_height, - NULL); - - /* XXX: The framebuffer_object spec isn't clear in defining whether attaching - * a texture as a renderbuffer with mipmap filtering enabled while the - * mipmaps have not been uploaded should result in an incomplete framebuffer - * object. (different drivers make different decisions) - * - * To avoid an error with drivers that do consider this a problem we - * explicitly set non mipmapped filters here. These will later be reset when - * the texture is actually used for rendering according to the filters set on - * the corresponding CoglPipeline. - */ - _cogl_texture_gl_flush_legacy_texobj_filters (texture, - GL_NEAREST, GL_NEAREST); - - config = cogl_framebuffer_get_config (framebuffer); - - gl_framebuffer_fbo = g_object_new (COGL_TYPE_GL_FRAMEBUFFER_FBO, - "framebuffer", framebuffer, - NULL); - gl_fbo = &gl_framebuffer_fbo->gl_fbo; - - if ((driver_config->disable_depth_and_stencil && - try_creating_fbo (context, - texture, - texture_level, - level_width, - level_height, - config, - allocate_flags = 0, - gl_fbo)) || - - (context->have_last_offscreen_allocate_flags && - try_creating_fbo (context, - texture, - texture_level, - level_width, - level_height, - config, - allocate_flags = context->last_offscreen_allocate_flags, - gl_fbo)) || - - ( - /* NB: WebGL introduces a DEPTH_STENCIL_ATTACHMENT and doesn't - * need an extension to handle _FLAG_DEPTH_STENCIL */ - (_cogl_has_private_feature - (context, COGL_PRIVATE_FEATURE_EXT_PACKED_DEPTH_STENCIL) || - _cogl_has_private_feature - (context, COGL_PRIVATE_FEATURE_OES_PACKED_DEPTH_STENCIL)) && - try_creating_fbo (context, - texture, - texture_level, - level_width, - level_height, - config, - allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH_STENCIL, - gl_fbo)) || - - try_creating_fbo (context, - texture, - texture_level, - level_width, - level_height, - config, - allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH | - COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL, - gl_fbo) || - - try_creating_fbo (context, - texture, - texture_level, - level_width, - level_height, - config, - allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL, - gl_fbo) || - - try_creating_fbo (context, - texture, - texture_level, - level_width, - level_height, - config, - allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH, - gl_fbo) || - - try_creating_fbo (context, - texture, - texture_level, - level_width, - level_height, - config, - allocate_flags = 0, - gl_fbo)) - { - cogl_framebuffer_update_samples_per_pixel (framebuffer, - gl_fbo->samples_per_pixel); - - if (!driver_config->disable_depth_and_stencil) - { - /* Record that the last set of flags succeeded so that we can - try that set first next time */ - context->last_offscreen_allocate_flags = allocate_flags; - context->have_last_offscreen_allocate_flags = TRUE; - } - - return gl_framebuffer_fbo; - } - else - { - g_object_unref (gl_framebuffer_fbo); - g_set_error (error, COGL_FRAMEBUFFER_ERROR, - COGL_FRAMEBUFFER_ERROR_ALLOCATE, - "Failed to create an OpenGL framebuffer object"); - return NULL; - } -} - -static void -cogl_gl_framebuffer_fbo_dispose (GObject *object) -{ - CoglGlFramebufferFbo *gl_framebuffer_fbo = COGL_GL_FRAMEBUFFER_FBO (object); - CoglFramebufferDriver *driver = COGL_FRAMEBUFFER_DRIVER (gl_framebuffer_fbo); - CoglFramebuffer *framebuffer = - cogl_framebuffer_driver_get_framebuffer (driver); - CoglContext *ctx = cogl_framebuffer_get_context (framebuffer); - - delete_renderbuffers (ctx, gl_framebuffer_fbo->gl_fbo.renderbuffers); - gl_framebuffer_fbo->gl_fbo.renderbuffers = NULL; - - if (gl_framebuffer_fbo->gl_fbo.fbo_handle) - { - GE (ctx, glDeleteFramebuffers (1, - &gl_framebuffer_fbo->gl_fbo.fbo_handle)); - gl_framebuffer_fbo->gl_fbo.fbo_handle = 0; - } - - G_OBJECT_CLASS (cogl_gl_framebuffer_fbo_parent_class)->dispose (object); -} - -static void -cogl_gl_framebuffer_fbo_init (CoglGlFramebufferFbo *gl_framebuffer_fbo) -{ - gl_framebuffer_fbo->dirty_bitmasks = TRUE; -} - -static void -cogl_gl_framebuffer_fbo_class_init (CoglGlFramebufferFboClass *klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS (klass); - CoglFramebufferDriverClass *driver_class = - COGL_FRAMEBUFFER_DRIVER_CLASS (klass); - CoglGlFramebufferClass *gl_framebuffer_class = - COGL_GL_FRAMEBUFFER_CLASS (klass); - - object_class->dispose = cogl_gl_framebuffer_fbo_dispose; - - driver_class->query_bits = cogl_gl_framebuffer_fbo_query_bits; - driver_class->discard_buffers = cogl_gl_framebuffer_fbo_discard_buffers; - - gl_framebuffer_class->bind = cogl_gl_framebuffer_fbo_bind; - gl_framebuffer_class->flush_stereo_mode_state = - cogl_gl_framebuffer_fbo_flush_stereo_mode_state; -} |