| /* |
| * GStreamer |
| * Copyright (C) 2007 David Schleef <ds@schleef.org> |
| * Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com> |
| * Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| /** |
| * SECTION:gstglfilter |
| * @title: GstGLFilter |
| * @short_description: GstBaseTransform subclass for dealing with RGBA textures |
| * @see_also: #GstBaseTransform, #GstGLContext, #GstGLFramebuffer |
| * |
| * #GstGLFilter helps to implement simple OpenGL filter elements taking a |
| * single input and producing a single output with a #GstGLFramebuffer |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <gst/video/gstvideometa.h> |
| |
| #include "gstglfilter.h" |
| |
| #include "gstglfuncs.h" |
| |
| #define GST_CAT_DEFAULT gst_gl_filter_debug |
| GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT); |
| |
| /* *INDENT-OFF* */ |
| static GstStaticPadTemplate gst_gl_filter_src_pad_template = |
| GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), " |
| "format = (string) RGBA, " |
| "width = " GST_VIDEO_SIZE_RANGE ", " |
| "height = " GST_VIDEO_SIZE_RANGE ", " |
| "framerate = " GST_VIDEO_FPS_RANGE "," |
| "texture-target = (string) 2D ; " |
| "video/x-raw(ANY), " |
| "format = (string) RGBA, " |
| "width = " GST_VIDEO_SIZE_RANGE ", " |
| "height = " GST_VIDEO_SIZE_RANGE ", " |
| "framerate = " GST_VIDEO_FPS_RANGE "," |
| "texture-target = (string) 2D" |
| )); |
| |
| static GstStaticPadTemplate gst_gl_filter_sink_pad_template = |
| GST_STATIC_PAD_TEMPLATE ("sink", |
| GST_PAD_SINK, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("video/x-raw(ANY), " |
| "format = (string) RGBA, " |
| "width = " GST_VIDEO_SIZE_RANGE ", " |
| "height = " GST_VIDEO_SIZE_RANGE ", " |
| "framerate = " GST_VIDEO_FPS_RANGE "," |
| "texture-target = (string) 2D ; " |
| "video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), " |
| "format = (string) RGBA, " |
| "width = " GST_VIDEO_SIZE_RANGE ", " |
| "height = " GST_VIDEO_SIZE_RANGE ", " |
| "framerate = " GST_VIDEO_FPS_RANGE "," |
| "texture-target = (string) 2D" |
| )); |
| /* *INDENT-ON* */ |
| |
| /* Properties */ |
| enum |
| { |
| PROP_0, |
| }; |
| |
| #define gst_gl_filter_parent_class parent_class |
| G_DEFINE_TYPE_WITH_CODE (GstGLFilter, gst_gl_filter, GST_TYPE_GL_BASE_FILTER, |
| GST_DEBUG_CATEGORY_INIT (gst_gl_filter_debug, "glfilter", 0, |
| "glfilter element"); |
| ); |
| |
| static void gst_gl_filter_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_gl_filter_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| |
| static GstCaps *gst_gl_filter_transform_caps (GstBaseTransform * bt, |
| GstPadDirection direction, GstCaps * caps, GstCaps * filter); |
| static GstCaps *default_transform_internal_caps (GstGLFilter * filter, |
| GstPadDirection direction, GstCaps * caps, GstCaps * filter_caps); |
| static GstCaps *gst_gl_filter_fixate_caps (GstBaseTransform * bt, |
| GstPadDirection direction, GstCaps * caps, GstCaps * othercaps); |
| static void gst_gl_filter_reset (GstGLFilter * filter); |
| static gboolean gst_gl_filter_stop (GstBaseTransform * bt); |
| static gboolean gst_gl_filter_get_unit_size (GstBaseTransform * trans, |
| GstCaps * caps, gsize * size); |
| static GstFlowReturn gst_gl_filter_transform (GstBaseTransform * bt, |
| GstBuffer * inbuf, GstBuffer * outbuf); |
| static gboolean gst_gl_filter_propose_allocation (GstBaseTransform * trans, |
| GstQuery * decide_query, GstQuery * query); |
| static gboolean gst_gl_filter_decide_allocation (GstBaseTransform * trans, |
| GstQuery * query); |
| static gboolean gst_gl_filter_set_caps (GstBaseTransform * bt, GstCaps * incaps, |
| GstCaps * outcaps); |
| static void gst_gl_filter_gl_stop (GstGLBaseFilter * filter); |
| static gboolean gst_gl_filter_gl_set_caps (GstGLBaseFilter * bt, |
| GstCaps * incaps, GstCaps * outcaps); |
| |
| void |
| gst_gl_filter_add_rgba_pad_templates (GstGLFilterClass * klass) |
| { |
| GstElementClass *element_class = GST_ELEMENT_CLASS (klass); |
| gst_element_class_add_static_pad_template (element_class, |
| &gst_gl_filter_src_pad_template); |
| gst_element_class_add_static_pad_template (element_class, |
| &gst_gl_filter_sink_pad_template); |
| } |
| |
| static void |
| gst_gl_filter_class_init (GstGLFilterClass * klass) |
| { |
| GObjectClass *gobject_class; |
| |
| gobject_class = (GObjectClass *) klass; |
| |
| gobject_class->set_property = gst_gl_filter_set_property; |
| gobject_class->get_property = gst_gl_filter_get_property; |
| |
| GST_BASE_TRANSFORM_CLASS (klass)->transform_caps = |
| gst_gl_filter_transform_caps; |
| GST_BASE_TRANSFORM_CLASS (klass)->fixate_caps = gst_gl_filter_fixate_caps; |
| GST_BASE_TRANSFORM_CLASS (klass)->transform = gst_gl_filter_transform; |
| GST_BASE_TRANSFORM_CLASS (klass)->stop = gst_gl_filter_stop; |
| GST_BASE_TRANSFORM_CLASS (klass)->set_caps = gst_gl_filter_set_caps; |
| GST_BASE_TRANSFORM_CLASS (klass)->propose_allocation = |
| gst_gl_filter_propose_allocation; |
| GST_BASE_TRANSFORM_CLASS (klass)->decide_allocation = |
| gst_gl_filter_decide_allocation; |
| GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size = gst_gl_filter_get_unit_size; |
| |
| GST_GL_BASE_FILTER_CLASS (klass)->gl_stop = gst_gl_filter_gl_stop; |
| GST_GL_BASE_FILTER_CLASS (klass)->gl_set_caps = gst_gl_filter_gl_set_caps; |
| |
| klass->transform_internal_caps = default_transform_internal_caps; |
| } |
| |
| static void |
| gst_gl_filter_init (GstGLFilter * filter) |
| { |
| filter->draw_attr_position_loc = -1; |
| filter->draw_attr_texture_loc = -1; |
| } |
| |
| static void |
| gst_gl_filter_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| switch (prop_id) { |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_gl_filter_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| switch (prop_id) { |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_gl_filter_reset (GstGLFilter * filter) |
| { |
| gst_caps_replace (&filter->out_caps, NULL); |
| } |
| |
| static gboolean |
| gst_gl_filter_stop (GstBaseTransform * bt) |
| { |
| GstGLFilter *filter = GST_GL_FILTER (bt); |
| |
| gst_gl_filter_reset (filter); |
| |
| return GST_BASE_TRANSFORM_CLASS (parent_class)->stop (bt); |
| } |
| |
| static void |
| gst_gl_filter_gl_stop (GstGLBaseFilter * base_filter) |
| { |
| GstGLFilter *filter = GST_GL_FILTER (base_filter); |
| GstGLContext *context = base_filter->context; |
| const GstGLFuncs *gl = context->gl_vtable; |
| |
| if (filter->vao) { |
| gl->DeleteVertexArrays (1, &filter->vao); |
| filter->vao = 0; |
| } |
| |
| if (filter->vertex_buffer) { |
| gl->DeleteBuffers (1, &filter->vertex_buffer); |
| filter->vertex_buffer = 0; |
| } |
| |
| if (filter->vbo_indices) { |
| gl->DeleteBuffers (1, &filter->vbo_indices); |
| filter->vbo_indices = 0; |
| } |
| |
| if (filter->fbo != NULL) { |
| gst_object_unref (filter->fbo); |
| filter->fbo = NULL; |
| } |
| |
| filter->default_shader = NULL; |
| filter->draw_attr_position_loc = -1; |
| filter->draw_attr_texture_loc = -1; |
| |
| GST_GL_BASE_FILTER_CLASS (parent_class)->gl_stop (base_filter); |
| } |
| |
| static GstCaps * |
| gst_gl_filter_fixate_caps (GstBaseTransform * bt, |
| GstPadDirection direction, GstCaps * caps, GstCaps * othercaps) |
| { |
| GstStructure *ins, *outs; |
| const GValue *from_par, *to_par; |
| GValue fpar = { 0, }, tpar = { |
| 0,}; |
| |
| othercaps = gst_caps_make_writable (othercaps); |
| othercaps = gst_caps_truncate (othercaps); |
| |
| GST_DEBUG_OBJECT (bt, "trying to fixate othercaps %" GST_PTR_FORMAT |
| " based on caps %" GST_PTR_FORMAT, othercaps, caps); |
| |
| ins = gst_caps_get_structure (caps, 0); |
| outs = gst_caps_get_structure (othercaps, 0); |
| |
| from_par = gst_structure_get_value (ins, "pixel-aspect-ratio"); |
| to_par = gst_structure_get_value (outs, "pixel-aspect-ratio"); |
| |
| /* If we're fixating from the sinkpad we always set the PAR and |
| * assume that missing PAR on the sinkpad means 1/1 and |
| * missing PAR on the srcpad means undefined |
| */ |
| if (direction == GST_PAD_SINK) { |
| if (!from_par) { |
| g_value_init (&fpar, GST_TYPE_FRACTION); |
| gst_value_set_fraction (&fpar, 1, 1); |
| from_par = &fpar; |
| } |
| if (!to_par) { |
| g_value_init (&tpar, GST_TYPE_FRACTION); |
| gst_value_set_fraction (&tpar, 1, 1); |
| to_par = &tpar; |
| } |
| } else { |
| if (!to_par) { |
| g_value_init (&tpar, GST_TYPE_FRACTION); |
| gst_value_set_fraction (&tpar, 1, 1); |
| to_par = &tpar; |
| |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1, |
| NULL); |
| } |
| if (!from_par) { |
| g_value_init (&fpar, GST_TYPE_FRACTION); |
| gst_value_set_fraction (&fpar, 1, 1); |
| from_par = &fpar; |
| } |
| } |
| |
| /* we have both PAR but they might not be fixated */ |
| { |
| gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d; |
| gint w = 0, h = 0; |
| gint from_dar_n, from_dar_d; |
| gint num, den; |
| |
| /* from_par should be fixed */ |
| g_return_val_if_fail (gst_value_is_fixed (from_par), othercaps); |
| |
| from_par_n = gst_value_get_fraction_numerator (from_par); |
| from_par_d = gst_value_get_fraction_denominator (from_par); |
| |
| gst_structure_get_int (ins, "width", &from_w); |
| gst_structure_get_int (ins, "height", &from_h); |
| |
| gst_structure_get_int (outs, "width", &w); |
| gst_structure_get_int (outs, "height", &h); |
| |
| /* if both width and height are already fixed, we can't do anything |
| * about it anymore */ |
| if (w && h) { |
| GST_DEBUG_OBJECT (bt, "dimensions already set to %dx%d, not fixating", |
| w, h); |
| if (!gst_value_is_fixed (to_par)) { |
| GST_DEBUG_OBJECT (bt, "fixating to_par to %dx%d", 1, 1); |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio")) |
| gst_structure_fixate_field_nearest_fraction (outs, |
| "pixel-aspect-ratio", 1, 1); |
| } |
| goto done; |
| } |
| |
| /* Calculate input DAR */ |
| if (!gst_util_fraction_multiply (from_w, from_h, from_par_n, from_par_d, |
| &from_dar_n, &from_dar_d)) { |
| GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| GST_DEBUG_OBJECT (bt, "Input DAR is %d/%d", from_dar_n, from_dar_d); |
| |
| /* If either width or height are fixed there's not much we |
| * can do either except choosing a height or width and PAR |
| * that matches the DAR as good as possible |
| */ |
| if (h) { |
| gint num, den; |
| |
| GST_DEBUG_OBJECT (bt, "height is fixed (%d)", h); |
| |
| if (!gst_value_is_fixed (to_par)) { |
| /* (shortcut) copy-paste (??) of videoscale seems to aim for 1/1, |
| * so let's make it so ... |
| * especially if following code assumes fixed */ |
| GST_DEBUG_OBJECT (bt, "fixating to_par to 1x1"); |
| gst_structure_fixate_field_nearest_fraction (outs, |
| "pixel-aspect-ratio", 1, 1); |
| to_par = gst_structure_get_value (outs, "pixel-aspect-ratio"); |
| } |
| |
| /* PAR is fixed, choose the height that is nearest to the |
| * height with the same DAR */ |
| to_par_n = gst_value_get_fraction_numerator (to_par); |
| to_par_d = gst_value_get_fraction_denominator (to_par); |
| |
| GST_DEBUG_OBJECT (bt, "PAR is fixed %d/%d", to_par_n, to_par_d); |
| |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d, |
| to_par_n, &num, &den)) { |
| GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| w = (guint) gst_util_uint64_scale_int (h, num, den); |
| gst_structure_fixate_field_nearest_int (outs, "width", w); |
| |
| goto done; |
| } else if (w) { |
| gint num, den; |
| |
| GST_DEBUG_OBJECT (bt, "width is fixed (%d)", w); |
| |
| if (!gst_value_is_fixed (to_par)) { |
| /* (shortcut) copy-paste (??) of videoscale seems to aim for 1/1, |
| * so let's make it so ... |
| * especially if following code assumes fixed */ |
| GST_DEBUG_OBJECT (bt, "fixating to_par to 1x1"); |
| gst_structure_fixate_field_nearest_fraction (outs, |
| "pixel-aspect-ratio", 1, 1); |
| to_par = gst_structure_get_value (outs, "pixel-aspect-ratio"); |
| } |
| |
| /* PAR is fixed, choose the height that is nearest to the |
| * height with the same DAR */ |
| to_par_n = gst_value_get_fraction_numerator (to_par); |
| to_par_d = gst_value_get_fraction_denominator (to_par); |
| |
| GST_DEBUG_OBJECT (bt, "PAR is fixed %d/%d", to_par_n, to_par_d); |
| |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d, |
| to_par_n, &num, &den)) { |
| GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| h = (guint) gst_util_uint64_scale_int (w, den, num); |
| gst_structure_fixate_field_nearest_int (outs, "height", h); |
| |
| goto done; |
| } else if (gst_value_is_fixed (to_par)) { |
| GstStructure *tmp; |
| gint set_h, set_w, f_h, f_w; |
| |
| to_par_n = gst_value_get_fraction_numerator (to_par); |
| to_par_d = gst_value_get_fraction_denominator (to_par); |
| |
| /* Calculate scale factor for the PAR change */ |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_n, |
| to_par_d, &num, &den)) { |
| GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| /* Try to keep the input height */ |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "height", from_h); |
| gst_structure_get_int (tmp, "height", &set_h); |
| |
| /* This might have failed but try to scale the width |
| * to keep the DAR nonetheless */ |
| w = (guint) gst_util_uint64_scale_int (set_h, num, den); |
| gst_structure_fixate_field_nearest_int (tmp, "width", w); |
| gst_structure_get_int (tmp, "width", &set_w); |
| gst_structure_free (tmp); |
| |
| /* We kept the DAR and the height is nearest to the original height */ |
| if (set_w == w) { |
| gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height", |
| G_TYPE_INT, set_h, NULL); |
| goto done; |
| } |
| |
| f_h = set_h; |
| f_w = set_w; |
| |
| /* If the former failed, try to keep the input width at least */ |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "width", from_w); |
| gst_structure_get_int (tmp, "width", &set_w); |
| |
| /* This might have failed but try to scale the width |
| * to keep the DAR nonetheless */ |
| h = (guint) gst_util_uint64_scale_int (set_w, den, num); |
| gst_structure_fixate_field_nearest_int (tmp, "height", h); |
| gst_structure_get_int (tmp, "height", &set_h); |
| gst_structure_free (tmp); |
| |
| /* We kept the DAR and the width is nearest to the original width */ |
| if (set_h == h) { |
| gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height", |
| G_TYPE_INT, set_h, NULL); |
| goto done; |
| } |
| |
| /* If all this failed, keep the height that was nearest to the orignal |
| * height and the nearest possible width. This changes the DAR but |
| * there's not much else to do here. |
| */ |
| gst_structure_set (outs, "width", G_TYPE_INT, f_w, "height", G_TYPE_INT, |
| f_h, NULL); |
| goto done; |
| } else { |
| GstStructure *tmp; |
| gint set_h, set_w, set_par_n, set_par_d, tmp2; |
| |
| /* width, height and PAR are not fixed */ |
| |
| /* First try to keep the height and width as good as possible |
| * and scale PAR */ |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "height", from_h); |
| gst_structure_get_int (tmp, "height", &set_h); |
| gst_structure_fixate_field_nearest_int (tmp, "width", from_w); |
| gst_structure_get_int (tmp, "width", &set_w); |
| |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, set_w, |
| &to_par_n, &to_par_d)) { |
| GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| gst_structure_free (tmp); |
| goto done; |
| } |
| |
| if (!gst_structure_has_field (tmp, "pixel-aspect-ratio")) |
| gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par); |
| gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio", |
| to_par_n, to_par_d); |
| gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n, |
| &set_par_d); |
| gst_structure_free (tmp); |
| |
| if (set_par_n == to_par_n && set_par_d == to_par_d) { |
| gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height", |
| G_TYPE_INT, set_h, NULL); |
| |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, |
| set_par_n, set_par_d, NULL); |
| goto done; |
| } |
| |
| /* Otherwise try to scale width to keep the DAR with the set |
| * PAR and height */ |
| if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d, |
| set_par_n, &num, &den)) { |
| GST_ELEMENT_ERROR (bt, CORE, NEGOTIATION, (NULL), |
| ("Error calculating the output scaled size - integer overflow")); |
| goto done; |
| } |
| |
| w = (guint) gst_util_uint64_scale_int (set_h, num, den); |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "width", w); |
| gst_structure_get_int (tmp, "width", &tmp2); |
| gst_structure_free (tmp); |
| |
| if (tmp2 == w) { |
| gst_structure_set (outs, "width", G_TYPE_INT, tmp2, "height", |
| G_TYPE_INT, set_h, NULL); |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, |
| set_par_n, set_par_d, NULL); |
| goto done; |
| } |
| |
| /* ... or try the same with the height */ |
| h = (guint) gst_util_uint64_scale_int (set_w, den, num); |
| tmp = gst_structure_copy (outs); |
| gst_structure_fixate_field_nearest_int (tmp, "height", h); |
| gst_structure_get_int (tmp, "height", &tmp2); |
| gst_structure_free (tmp); |
| |
| if (tmp2 == h) { |
| gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height", |
| G_TYPE_INT, tmp2, NULL); |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, |
| set_par_n, set_par_d, NULL); |
| goto done; |
| } |
| |
| /* If all fails we can't keep the DAR and take the nearest values |
| * for everything from the first try */ |
| gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height", |
| G_TYPE_INT, set_h, NULL); |
| if (gst_structure_has_field (outs, "pixel-aspect-ratio") || |
| set_par_n != set_par_d) |
| gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, |
| set_par_n, set_par_d, NULL); |
| } |
| } |
| |
| |
| done: |
| othercaps = gst_caps_fixate (othercaps); |
| |
| GST_DEBUG_OBJECT (bt, "fixated othercaps to %" GST_PTR_FORMAT, othercaps); |
| |
| if (from_par == &fpar) |
| g_value_unset (&fpar); |
| if (to_par == &tpar) |
| g_value_unset (&tpar); |
| |
| return othercaps; |
| } |
| |
| /* copies the given caps */ |
| static GstCaps * |
| gst_gl_filter_caps_remove_size (GstCaps * caps) |
| { |
| GstStructure *st; |
| GstCapsFeatures *f; |
| gint i, n; |
| GstCaps *res; |
| |
| res = gst_caps_new_empty (); |
| |
| n = gst_caps_get_size (caps); |
| for (i = 0; i < n; i++) { |
| st = gst_caps_get_structure (caps, i); |
| f = gst_caps_get_features (caps, i); |
| |
| /* If this is already expressed by the existing caps |
| * skip this structure */ |
| if (i > 0 && gst_caps_is_subset_structure_full (res, st, f)) |
| continue; |
| |
| st = gst_structure_copy (st); |
| gst_structure_set (st, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, |
| "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL); |
| |
| /* if pixel aspect ratio, make a range of it */ |
| if (gst_structure_has_field (st, "pixel-aspect-ratio")) { |
| gst_structure_set (st, "pixel-aspect-ratio", |
| GST_TYPE_FRACTION_RANGE, 1, G_MAXINT, G_MAXINT, 1, NULL); |
| } |
| |
| gst_caps_append_structure_full (res, st, gst_caps_features_copy (f)); |
| } |
| |
| return res; |
| } |
| |
| static GstCaps * |
| gst_gl_filter_set_caps_features (const GstCaps * caps, |
| const gchar * feature_name) |
| { |
| GstCaps *ret = gst_caps_copy (caps); |
| guint n = gst_caps_get_size (ret); |
| guint i = 0; |
| |
| for (i = 0; i < n; i++) { |
| gst_caps_set_features (ret, i, |
| gst_caps_features_from_string (GST_CAPS_FEATURE_MEMORY_GL_MEMORY)); |
| } |
| |
| return ret; |
| } |
| |
| static GstCaps * |
| default_transform_internal_caps (GstGLFilter * filter, |
| GstPadDirection direction, GstCaps * caps, GstCaps * filter_caps) |
| { |
| GstCaps *tmp = gst_gl_filter_caps_remove_size (caps); |
| |
| GST_DEBUG_OBJECT (filter, "size removal returned caps %" GST_PTR_FORMAT, tmp); |
| return tmp; |
| } |
| |
| static GstCaps * |
| gst_gl_filter_transform_caps (GstBaseTransform * bt, |
| GstPadDirection direction, GstCaps * caps, GstCaps * filter_caps) |
| { |
| GstGLFilter *filter = GST_GL_FILTER (bt); |
| GstCaps *tmp = NULL; |
| GstCaps *result = NULL; |
| |
| if (gst_base_transform_is_passthrough (bt)) { |
| tmp = gst_caps_ref (caps); |
| } else { |
| tmp = GST_GL_FILTER_GET_CLASS (filter)->transform_internal_caps (filter, |
| direction, caps, NULL); |
| |
| result = |
| gst_gl_filter_set_caps_features (tmp, |
| GST_CAPS_FEATURE_MEMORY_GL_MEMORY); |
| gst_caps_unref (tmp); |
| tmp = result; |
| } |
| |
| if (filter_caps) { |
| result = |
| gst_caps_intersect_full (filter_caps, tmp, GST_CAPS_INTERSECT_FIRST); |
| gst_caps_unref (tmp); |
| } else { |
| result = tmp; |
| } |
| |
| GST_DEBUG_OBJECT (bt, "returning caps: %" GST_PTR_FORMAT, result); |
| |
| return result; |
| } |
| |
| static gboolean |
| gst_gl_filter_get_unit_size (GstBaseTransform * trans, GstCaps * caps, |
| gsize * size) |
| { |
| gboolean ret = FALSE; |
| GstVideoInfo info; |
| |
| ret = gst_video_info_from_caps (&info, caps); |
| if (ret) |
| *size = GST_VIDEO_INFO_SIZE (&info); |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_gl_filter_gl_set_caps (GstGLBaseFilter * bt, GstCaps * incaps, |
| GstCaps * outcaps) |
| { |
| GstGLFilter *filter = GST_GL_FILTER (bt); |
| GstGLFilterClass *filter_class = GST_GL_FILTER_GET_CLASS (filter); |
| GstGLContext *context = GST_GL_BASE_FILTER (filter)->context; |
| gint out_width, out_height; |
| |
| out_width = GST_VIDEO_INFO_WIDTH (&filter->out_info); |
| out_height = GST_VIDEO_INFO_HEIGHT (&filter->out_info); |
| |
| if (filter->fbo) |
| gst_object_unref (filter->fbo); |
| |
| if (!(filter->fbo = |
| gst_gl_framebuffer_new_with_default_depth (context, out_width, |
| out_height))) |
| goto context_error; |
| |
| if (filter_class->init_fbo) { |
| if (!filter_class->init_fbo (filter)) |
| goto error; |
| } |
| |
| return TRUE; |
| |
| context_error: |
| { |
| GST_ELEMENT_ERROR (filter, RESOURCE, NOT_FOUND, ("Could not generate FBO"), |
| (NULL)); |
| return FALSE; |
| } |
| error: |
| { |
| GST_ELEMENT_ERROR (filter, LIBRARY, INIT, |
| ("Subclass failed to initialize."), (NULL)); |
| return FALSE; |
| } |
| } |
| |
| static gboolean |
| gst_gl_filter_set_caps (GstBaseTransform * bt, GstCaps * incaps, |
| GstCaps * outcaps) |
| { |
| GstGLFilter *filter; |
| GstGLFilterClass *filter_class; |
| GstGLTextureTarget from_target, to_target; |
| |
| filter = GST_GL_FILTER (bt); |
| filter_class = GST_GL_FILTER_GET_CLASS (filter); |
| |
| if (!gst_video_info_from_caps (&filter->in_info, incaps)) |
| goto wrong_caps; |
| if (!gst_video_info_from_caps (&filter->out_info, outcaps)) |
| goto wrong_caps; |
| |
| { |
| GstStructure *in_s = gst_caps_get_structure (incaps, 0); |
| GstStructure *out_s = gst_caps_get_structure (outcaps, 0); |
| |
| if (gst_structure_has_field_typed (in_s, "texture-target", G_TYPE_STRING)) |
| from_target = |
| gst_gl_texture_target_from_string (gst_structure_get_string (in_s, |
| "texture-target")); |
| else |
| from_target = GST_GL_TEXTURE_TARGET_2D; |
| |
| if (gst_structure_has_field_typed (out_s, "texture-target", G_TYPE_STRING)) |
| to_target = |
| gst_gl_texture_target_from_string (gst_structure_get_string (out_s, |
| "texture-target")); |
| else |
| to_target = GST_GL_TEXTURE_TARGET_2D; |
| |
| if (to_target == GST_GL_TEXTURE_TARGET_NONE |
| || from_target == GST_GL_TEXTURE_TARGET_NONE) |
| /* invalid caps */ |
| goto wrong_caps; |
| } |
| |
| if (filter_class->set_caps) { |
| if (!filter_class->set_caps (filter, incaps, outcaps)) |
| goto error; |
| } |
| |
| gst_caps_replace (&filter->out_caps, outcaps); |
| filter->in_texture_target = from_target; |
| filter->out_texture_target = to_target; |
| |
| GST_DEBUG_OBJECT (filter, "set_caps %dx%d in %" GST_PTR_FORMAT |
| " out %" GST_PTR_FORMAT, |
| GST_VIDEO_INFO_WIDTH (&filter->out_info), |
| GST_VIDEO_INFO_HEIGHT (&filter->out_info), incaps, outcaps); |
| |
| return GST_BASE_TRANSFORM_CLASS (parent_class)->set_caps (bt, incaps, |
| outcaps); |
| |
| /* ERRORS */ |
| wrong_caps: |
| { |
| GST_WARNING ("Wrong caps - could not understand input or output caps"); |
| return FALSE; |
| } |
| error: |
| { |
| return FALSE; |
| } |
| } |
| |
| static gboolean |
| gst_gl_filter_propose_allocation (GstBaseTransform * trans, |
| GstQuery * decide_query, GstQuery * query) |
| { |
| GstGLFilter *filter = GST_GL_FILTER (trans); |
| GstGLContext *context = GST_GL_BASE_FILTER (filter)->context; |
| GstCaps *caps; |
| GstVideoInfo info; |
| guint size; |
| GstBufferPool *pool = NULL; |
| gboolean need_pool; |
| |
| gst_query_parse_allocation (query, &caps, &need_pool); |
| |
| if (caps == NULL) |
| goto no_caps; |
| |
| if (!gst_video_info_from_caps (&info, caps)) |
| goto invalid_caps; |
| |
| /* the normal size of a frame */ |
| size = info.size; |
| |
| if (need_pool) { |
| GstStructure *config; |
| |
| GST_DEBUG_OBJECT (filter, "create new pool"); |
| pool = gst_gl_buffer_pool_new (context); |
| |
| config = gst_buffer_pool_get_config (pool); |
| gst_buffer_pool_config_set_params (config, caps, size, 0, 0); |
| |
| if (!gst_buffer_pool_set_config (pool, config)) { |
| g_object_unref (pool); |
| goto config_failed; |
| } |
| } |
| |
| gst_query_add_allocation_pool (query, pool, size, 1, 0); |
| if (pool) |
| g_object_unref (pool); |
| |
| if (context->gl_vtable->FenceSync) |
| gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0); |
| |
| return TRUE; |
| |
| /* ERRORS */ |
| no_caps: |
| { |
| GST_DEBUG_OBJECT (trans, "no caps specified"); |
| return FALSE; |
| } |
| invalid_caps: |
| { |
| GST_DEBUG_OBJECT (trans, "invalid caps specified"); |
| return FALSE; |
| } |
| config_failed: |
| { |
| GST_DEBUG_OBJECT (trans, "failed setting config"); |
| return FALSE; |
| } |
| } |
| |
| static gboolean |
| gst_gl_filter_decide_allocation (GstBaseTransform * trans, GstQuery * query) |
| { |
| GstGLContext *context; |
| GstBufferPool *pool = NULL; |
| GstStructure *config; |
| GstCaps *caps; |
| guint min, max, size; |
| gboolean update_pool; |
| |
| gst_query_parse_allocation (query, &caps, NULL); |
| if (!caps) |
| return FALSE; |
| |
| /* get gl context */ |
| if (!GST_BASE_TRANSFORM_CLASS (parent_class)->decide_allocation (trans, |
| query)) |
| return FALSE; |
| |
| context = GST_GL_BASE_FILTER (trans)->context; |
| |
| if (gst_query_get_n_allocation_pools (query) > 0) { |
| gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max); |
| |
| update_pool = TRUE; |
| } else { |
| GstVideoInfo vinfo; |
| |
| gst_video_info_init (&vinfo); |
| gst_video_info_from_caps (&vinfo, caps); |
| size = vinfo.size; |
| min = max = 0; |
| update_pool = FALSE; |
| } |
| |
| if (!pool || !GST_IS_GL_BUFFER_POOL (pool)) { |
| if (pool) |
| gst_object_unref (pool); |
| pool = gst_gl_buffer_pool_new (context); |
| } |
| |
| config = gst_buffer_pool_get_config (pool); |
| |
| gst_buffer_pool_config_set_params (config, caps, size, min, max); |
| gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); |
| if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL)) |
| gst_buffer_pool_config_add_option (config, |
| GST_BUFFER_POOL_OPTION_GL_SYNC_META); |
| |
| gst_buffer_pool_set_config (pool, config); |
| |
| if (update_pool) |
| gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max); |
| else |
| gst_query_add_allocation_pool (query, pool, size, min, max); |
| |
| gst_object_unref (pool); |
| |
| return TRUE; |
| } |
| |
| /** |
| * gst_gl_filter_filter_texture: |
| * @filter: a #GstGLFilter |
| * @inbuf: an input buffer |
| * @outbuf: an output buffer |
| * |
| * Calls filter_texture vfunc with correctly mapped #GstGLMemorys |
| * |
| * Returns: whether the transformation succeeded |
| * |
| * Since: 1.4 |
| */ |
| gboolean |
| gst_gl_filter_filter_texture (GstGLFilter * filter, GstBuffer * inbuf, |
| GstBuffer * outbuf) |
| { |
| GstGLFilterClass *filter_class; |
| GstMemory *in_tex, *out_tex; |
| GstVideoFrame gl_frame, out_frame; |
| gboolean ret; |
| |
| filter_class = GST_GL_FILTER_GET_CLASS (filter); |
| |
| if (!gst_video_frame_map (&gl_frame, &filter->in_info, inbuf, |
| GST_MAP_READ | GST_MAP_GL)) { |
| ret = FALSE; |
| goto inbuf_error; |
| } |
| |
| in_tex = gl_frame.map[0].memory; |
| if (!gst_is_gl_memory (in_tex)) { |
| ret = FALSE; |
| GST_ERROR_OBJECT (filter, "Input memory must be GstGLMemory"); |
| goto unmap_out_error; |
| } |
| |
| if (!gst_video_frame_map (&out_frame, &filter->out_info, outbuf, |
| GST_MAP_WRITE | GST_MAP_GL)) { |
| ret = FALSE; |
| goto unmap_out_error; |
| } |
| |
| out_tex = out_frame.map[0].memory; |
| g_return_val_if_fail (gst_is_gl_memory (out_tex), FALSE); |
| |
| GST_DEBUG ("calling filter_texture with textures in:%i out:%i", |
| GST_GL_MEMORY_CAST (in_tex)->tex_id, |
| GST_GL_MEMORY_CAST (out_tex)->tex_id); |
| |
| g_assert (filter_class->filter_texture); |
| |
| ret = filter_class->filter_texture (filter, GST_GL_MEMORY_CAST (in_tex), |
| GST_GL_MEMORY_CAST (out_tex)); |
| |
| gst_video_frame_unmap (&out_frame); |
| unmap_out_error: |
| gst_video_frame_unmap (&gl_frame); |
| inbuf_error: |
| |
| return ret; |
| } |
| |
| static void |
| _filter_gl (GstGLContext * context, GstGLFilter * filter) |
| { |
| GstGLFilterClass *filter_class = GST_GL_FILTER_GET_CLASS (filter); |
| |
| gst_gl_insert_debug_marker (context, |
| "processing in element %s", GST_OBJECT_NAME (filter)); |
| |
| if (filter_class->filter) |
| filter->gl_result = |
| filter_class->filter (filter, filter->inbuf, filter->outbuf); |
| else |
| filter->gl_result = |
| gst_gl_filter_filter_texture (filter, filter->inbuf, filter->outbuf); |
| } |
| |
| static GstFlowReturn |
| gst_gl_filter_transform (GstBaseTransform * bt, GstBuffer * inbuf, |
| GstBuffer * outbuf) |
| { |
| GstGLFilter *filter = GST_GL_FILTER (bt); |
| GstGLFilterClass *filter_class = GST_GL_FILTER_GET_CLASS (bt); |
| GstGLDisplay *display = GST_GL_BASE_FILTER (bt)->display; |
| GstGLContext *context = GST_GL_BASE_FILTER (bt)->context; |
| GstGLSyncMeta *out_sync_meta, *in_sync_meta; |
| gboolean ret; |
| |
| if (!display) |
| return GST_FLOW_NOT_NEGOTIATED; |
| |
| g_assert (filter_class->filter || filter_class->filter_texture); |
| |
| in_sync_meta = gst_buffer_get_gl_sync_meta (inbuf); |
| if (in_sync_meta) |
| gst_gl_sync_meta_wait (in_sync_meta, context); |
| |
| filter->inbuf = inbuf; |
| filter->outbuf = outbuf; |
| gst_gl_context_thread_add (context, (GstGLContextThreadFunc) _filter_gl, |
| filter); |
| ret = filter->gl_result; |
| |
| out_sync_meta = gst_buffer_get_gl_sync_meta (outbuf); |
| if (out_sync_meta) |
| gst_gl_sync_meta_set_sync_point (out_sync_meta, context); |
| |
| return ret ? GST_FLOW_OK : GST_FLOW_ERROR; |
| } |
| |
| struct glcb |
| { |
| GstGLFilter *filter; |
| GstGLFilterRenderFunc func; |
| GstGLMemory *in_tex; |
| gpointer data; |
| }; |
| |
| static gboolean |
| _glcb (gpointer data) |
| { |
| struct glcb *cb = data; |
| |
| return cb->func (cb->filter, cb->in_tex, cb->data); |
| } |
| |
| /** |
| * gst_gl_filter_render_to_target: |
| * @filter: a #GstGLFilter |
| * @input: the input texture |
| * @output: the output texture |
| * @func: (scope call): the function to transform @input into @output. called with @data |
| * @data: (allow-none): the data associated with @func |
| * |
| * Transforms @input into @output using @func on through FBO. |
| * |
| * Returns: the return value of @func |
| * |
| * Since: 1.10 |
| */ |
| gboolean |
| gst_gl_filter_render_to_target (GstGLFilter * filter, GstGLMemory * input, |
| GstGLMemory * output, GstGLFilterRenderFunc func, gpointer data) |
| { |
| struct glcb cb; |
| |
| cb.filter = filter; |
| cb.func = func; |
| cb.in_tex = input; |
| cb.data = data; |
| |
| return gst_gl_framebuffer_draw_to_texture (filter->fbo, output, _glcb, &cb); |
| } |
| |
| static void |
| _get_attributes (GstGLFilter * filter) |
| { |
| if (!filter->default_shader) |
| return; |
| |
| if (filter->valid_attributes) |
| return; |
| |
| if (filter->draw_attr_position_loc == -1) |
| filter->draw_attr_position_loc = |
| gst_gl_shader_get_attribute_location (filter->default_shader, |
| "a_position"); |
| |
| if (filter->draw_attr_texture_loc == -1) |
| filter->draw_attr_texture_loc = |
| gst_gl_shader_get_attribute_location (filter->default_shader, |
| "a_texcoord"); |
| |
| filter->valid_attributes = TRUE; |
| } |
| |
| static gboolean |
| _draw_with_shader_cb (GstGLFilter * filter, GstGLMemory * in_tex, |
| gpointer unused) |
| { |
| GstGLContext *context = GST_GL_BASE_FILTER (filter)->context; |
| GstGLFuncs *gl = context->gl_vtable; |
| guint gl_target; |
| |
| #if GST_GL_HAVE_OPENGL |
| if (gst_gl_context_get_gl_api (context) & GST_GL_API_OPENGL) { |
| gl->MatrixMode (GL_PROJECTION); |
| gl->LoadIdentity (); |
| } |
| #endif |
| |
| _get_attributes (filter); |
| gst_gl_shader_use (filter->default_shader); |
| gl_target = gst_gl_texture_target_to_gl (filter->in_texture_target); |
| |
| gl->ActiveTexture (GL_TEXTURE1); |
| gl->BindTexture (gl_target, gst_gl_memory_get_texture_id (in_tex)); |
| |
| gst_gl_shader_set_uniform_1i (filter->default_shader, "tex", 1); |
| gst_gl_shader_set_uniform_1f (filter->default_shader, "width", |
| GST_VIDEO_INFO_WIDTH (&filter->out_info)); |
| gst_gl_shader_set_uniform_1f (filter->default_shader, "height", |
| GST_VIDEO_INFO_HEIGHT (&filter->out_info)); |
| |
| gst_gl_filter_draw_fullscreen_quad (filter); |
| |
| return TRUE; |
| } |
| |
| /** |
| * gst_gl_filter_render_to_target_with_shader: |
| * @filter: a #GstGLFilter |
| * @input: the input texture |
| * @output: the output texture |
| * @shader: the shader to use. |
| * |
| * Transforms @input into @output using @shader with a FBO. |
| * |
| * See also: gst_gl_filter_render_to_target() |
| * |
| * Since: 1.4 |
| */ |
| /* attach target to a FBO, use shader, pass input as "tex" uniform to |
| * the shader, render input to a quad */ |
| void |
| gst_gl_filter_render_to_target_with_shader (GstGLFilter * filter, |
| GstGLMemory * input, GstGLMemory * output, GstGLShader * shader) |
| { |
| if (filter->default_shader != shader) |
| filter->valid_attributes = FALSE; |
| filter->default_shader = shader; |
| |
| gst_gl_filter_render_to_target (filter, input, output, _draw_with_shader_cb, |
| NULL); |
| } |
| |
| /* *INDENT-OFF* */ |
| static const GLfloat vertices[] = { |
| -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, |
| 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, |
| 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, |
| -1.0f, 1.0f, 0.0f, 0.0f, 1.0f |
| }; |
| |
| static const GLushort indices[] = { 0, 1, 2, 0, 2, 3 }; |
| /* *INDENT-ON* */ |
| |
| static void |
| _bind_buffer (GstGLFilter * filter) |
| { |
| GstGLContext *context = GST_GL_BASE_FILTER (filter)->context; |
| const GstGLFuncs *gl = context->gl_vtable; |
| |
| gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, filter->vbo_indices); |
| gl->BindBuffer (GL_ARRAY_BUFFER, filter->vertex_buffer); |
| |
| _get_attributes (filter); |
| /* Load the vertex position */ |
| gl->VertexAttribPointer (filter->draw_attr_position_loc, 3, GL_FLOAT, |
| GL_FALSE, 5 * sizeof (GLfloat), (void *) 0); |
| |
| /* Load the texture coordinate */ |
| gl->VertexAttribPointer (filter->draw_attr_texture_loc, 2, GL_FLOAT, GL_FALSE, |
| 5 * sizeof (GLfloat), (void *) (3 * sizeof (GLfloat))); |
| |
| |
| gl->EnableVertexAttribArray (filter->draw_attr_position_loc); |
| gl->EnableVertexAttribArray (filter->draw_attr_texture_loc); |
| } |
| |
| static void |
| _unbind_buffer (GstGLFilter * filter) |
| { |
| GstGLContext *context = GST_GL_BASE_FILTER (filter)->context; |
| const GstGLFuncs *gl = context->gl_vtable; |
| |
| gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0); |
| gl->BindBuffer (GL_ARRAY_BUFFER, 0); |
| |
| gl->DisableVertexAttribArray (filter->draw_attr_position_loc); |
| gl->DisableVertexAttribArray (filter->draw_attr_texture_loc); |
| } |
| |
| /** |
| * gst_gl_filter_draw_fullscreen_quad: |
| * @filter: a #GstGLFilter |
| * |
| * Render a fullscreen quad using the current GL state. The only GL state this |
| * modifies is the necessary vertex/index buffers and, if necessary, a |
| * Vertex Array Object for drawing a fullscreen quad. Framebuffer state, |
| * any shaders, viewport state, etc must be setup by the caller. |
| * |
| * Since: 1.10 |
| */ |
| void |
| gst_gl_filter_draw_fullscreen_quad (GstGLFilter * filter) |
| { |
| GstGLContext *context = GST_GL_BASE_FILTER (filter)->context; |
| GstGLFuncs *gl = context->gl_vtable; |
| |
| { |
| if (!filter->vertex_buffer) { |
| if (gl->GenVertexArrays) { |
| gl->GenVertexArrays (1, &filter->vao); |
| gl->BindVertexArray (filter->vao); |
| } |
| |
| gl->GenBuffers (1, &filter->vertex_buffer); |
| gl->BindBuffer (GL_ARRAY_BUFFER, filter->vertex_buffer); |
| gl->BufferData (GL_ARRAY_BUFFER, 4 * 5 * sizeof (GLfloat), vertices, |
| GL_STATIC_DRAW); |
| |
| gl->GenBuffers (1, &filter->vbo_indices); |
| gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, filter->vbo_indices); |
| gl->BufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof (indices), indices, |
| GL_STATIC_DRAW); |
| } |
| |
| if (gl->GenVertexArrays) |
| gl->BindVertexArray (filter->vao); |
| _bind_buffer (filter); |
| |
| gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0); |
| |
| if (gl->GenVertexArrays) |
| gl->BindVertexArray (0); |
| _unbind_buffer (filter); |
| } |
| } |