forked from AuroraMiddleware/gtk
24a6f3c055
We want the GL driver to cache as many resources as possible, so we can always ensure that we're in a consistent state, and we can handle state transitions more appropriately.
603 lines
15 KiB
C
603 lines
15 KiB
C
#include "config.h"
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#include "gskgldriverprivate.h"
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#include "gskdebugprivate.h"
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#include <gdk/gdk.h>
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#include <epoxy/gl.h>
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typedef struct {
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GLuint texture_id;
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int width;
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int height;
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GLuint min_filter;
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GLuint mag_filter;
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GArray *fbos;
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} Texture;
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typedef struct {
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GLuint vao_id;
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GLuint buffer_id;
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GLuint position_id;
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GLuint uv_id;
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} Vao;
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typedef struct {
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GLuint fbo_id;
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GLuint depth_stencil_id;
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} Fbo;
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struct _GskGLDriver
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{
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GObject parent_instance;
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GdkGLContext *gl_context;
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Fbo default_fbo;
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GHashTable *textures;
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GHashTable *vaos;
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Texture *bound_source_texture;
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Texture *bound_mask_texture;
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Vao *bound_vao;
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Fbo *bound_fbo;
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gboolean in_frame : 1;
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};
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enum
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{
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PROP_GL_CONTEXT = 1,
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N_PROPS
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};
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static GParamSpec *gsk_gl_driver_properties[N_PROPS];
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G_DEFINE_TYPE (GskGLDriver, gsk_gl_driver, G_TYPE_OBJECT)
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static Texture *
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texture_new (void)
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{
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return g_slice_new0 (Texture);
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}
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static void
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texture_free (gpointer data)
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{
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Texture *t = data;
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g_clear_pointer (&t->fbos, g_array_unref);
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glDeleteTextures (1, &t->texture_id);
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g_slice_free (Texture, t);
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}
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static void
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fbo_clear (gpointer data)
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{
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Fbo *f = data;
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if (f->depth_stencil_id != 0)
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glDeleteRenderbuffers (1, &f->depth_stencil_id);
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glDeleteFramebuffers (1, &f->fbo_id);
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}
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static Vao *
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vao_new (void)
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{
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return g_slice_new0 (Vao);
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}
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static void
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vao_free (gpointer data)
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{
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Vao *v = data;
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glDeleteBuffers (1, &v->buffer_id);
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glDeleteVertexArrays (1, &v->vao_id);
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g_slice_free (Vao, v);
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}
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static void
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gsk_gl_driver_finalize (GObject *gobject)
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{
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GskGLDriver *self = GSK_GL_DRIVER (gobject);
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g_clear_pointer (&self->textures, g_hash_table_unref);
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g_clear_pointer (&self->vaos, g_hash_table_unref);
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g_clear_object (&self->gl_context);
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G_OBJECT_CLASS (gsk_gl_driver_parent_class)->finalize (gobject);
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}
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static void
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gsk_gl_driver_set_property (GObject *gobject,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GskGLDriver *self = GSK_GL_DRIVER (gobject);
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switch (prop_id)
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{
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case PROP_GL_CONTEXT:
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self->gl_context = g_value_dup_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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}
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}
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static void
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gsk_gl_driver_get_property (GObject *gobject,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GskGLDriver *self = GSK_GL_DRIVER (gobject);
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switch (prop_id)
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{
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case PROP_GL_CONTEXT:
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g_value_set_object (value, self->gl_context);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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}
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}
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static void
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gsk_gl_driver_class_init (GskGLDriverClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->set_property = gsk_gl_driver_set_property;
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gobject_class->get_property = gsk_gl_driver_get_property;
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gobject_class->finalize = gsk_gl_driver_finalize;
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gsk_gl_driver_properties[PROP_GL_CONTEXT] =
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g_param_spec_object ("gl-context", "GL Context", "The GL context used by the driver",
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GDK_TYPE_GL_CONTEXT,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
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g_object_class_install_properties (gobject_class, N_PROPS, gsk_gl_driver_properties);
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}
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static void
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gsk_gl_driver_init (GskGLDriver *self)
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{
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self->textures = g_hash_table_new_full (NULL, NULL, NULL, texture_free);
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self->vaos = g_hash_table_new_full (NULL, NULL, NULL, vao_free);
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}
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GskGLDriver *
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gsk_gl_driver_new (GdkGLContext *context)
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{
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g_return_val_if_fail (GDK_IS_GL_CONTEXT (context), NULL);
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return g_object_new (GSK_TYPE_GL_DRIVER,
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"gl-context", context,
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NULL);
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}
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void
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gsk_gl_driver_begin_frame (GskGLDriver *driver)
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{
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g_return_if_fail (GSK_IS_GL_DRIVER (driver));
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g_return_if_fail (!driver->in_frame);
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driver->in_frame = TRUE;
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glGetIntegerv (GL_FRAMEBUFFER_BINDING, (GLint *) &(driver->default_fbo.fbo_id));
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driver->bound_fbo = &driver->default_fbo;
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glActiveTexture (GL_TEXTURE0);
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glBindTexture (GL_TEXTURE_2D, 0);
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glActiveTexture (GL_TEXTURE0 + 1);
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glBindTexture (GL_TEXTURE_2D, 0);
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glBindVertexArray (0);
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glUseProgram (0);
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glActiveTexture (GL_TEXTURE0);
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}
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void
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gsk_gl_driver_end_frame (GskGLDriver *driver)
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{
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g_return_if_fail (GSK_IS_GL_DRIVER (driver));
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g_return_if_fail (driver->in_frame);
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glBindTexture (GL_TEXTURE_2D, 0);
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glUseProgram (0);
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glBindVertexArray (0);
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driver->bound_source_texture = NULL;
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driver->bound_mask_texture = NULL;
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driver->bound_vao = NULL;
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driver->bound_fbo = NULL;
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GSK_NOTE (OPENGL,
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g_print ("*** Frame end: textures=%d, vaos=%d\n",
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g_hash_table_size (driver->textures),
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g_hash_table_size (driver->vaos)));
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driver->in_frame = FALSE;
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}
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static Texture *
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gsk_gl_driver_get_texture (GskGLDriver *driver,
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int texture_id)
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{
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Texture *t;
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if (g_hash_table_lookup_extended (driver->textures, GINT_TO_POINTER (texture_id), NULL, (gpointer *) &t))
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return t;
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return NULL;
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}
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static Vao *
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gsk_gl_driver_get_vao (GskGLDriver *driver,
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int vao_id)
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{
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Vao *v;
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if (g_hash_table_lookup_extended (driver->vaos, GINT_TO_POINTER (vao_id), NULL, (gpointer *) &v))
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return v;
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return NULL;
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}
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static Fbo *
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gsk_gl_driver_get_fbo (GskGLDriver *driver,
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int texture_id)
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{
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Texture *t = gsk_gl_driver_get_texture (driver, texture_id);
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if (t->fbos == NULL)
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return &driver->default_fbo;
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return &g_array_index (t->fbos, Fbo, 0);
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}
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int
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gsk_gl_driver_create_texture (GskGLDriver *driver,
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int width,
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int height)
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{
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guint texture_id;
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Texture *t;
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g_return_val_if_fail (GSK_IS_GL_DRIVER (driver), -1);
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glGenTextures (1, &texture_id);
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t = texture_new ();
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t->texture_id = texture_id;
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t->width = width;
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t->height = height;
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t->min_filter = GL_NEAREST;
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t->mag_filter = GL_NEAREST;
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g_hash_table_insert (driver->textures, GINT_TO_POINTER (texture_id), t);
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return t->texture_id;
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}
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int
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gsk_gl_driver_create_vao_for_quad (GskGLDriver *driver,
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int position_id,
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int uv_id,
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int n_quads,
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GskQuadVertex *quads)
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{
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GLuint vao_id, buffer_id;
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Vao *v;
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g_return_val_if_fail (GSK_IS_GL_DRIVER (driver), -1);
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g_return_val_if_fail (driver->in_frame, -1);
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glGenVertexArrays (1, &vao_id);
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glBindVertexArray (vao_id);
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glGenBuffers (1, &buffer_id);
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glBindBuffer (GL_ARRAY_BUFFER, buffer_id);
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glBufferData (GL_ARRAY_BUFFER, n_quads, quads, GL_STATIC_DRAW);
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glEnableVertexAttribArray (position_id);
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glVertexAttribPointer (position_id, 2, GL_FLOAT, GL_FALSE,
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sizeof (GskQuadVertex),
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(void *) G_STRUCT_OFFSET (GskQuadVertex, position));
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glEnableVertexAttribArray (uv_id);
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glVertexAttribPointer (uv_id, 2, GL_FLOAT, GL_FALSE,
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sizeof (GskQuadVertex),
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(void *) G_STRUCT_OFFSET (GskQuadVertex, uv));
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glBindBuffer (GL_ARRAY_BUFFER, 0);
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glBindVertexArray (0);
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v = vao_new ();
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v->vao_id = vao_id;
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v->buffer_id = buffer_id;
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v->position_id = position_id;
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v->uv_id = uv_id;
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g_hash_table_insert (driver->vaos, GINT_TO_POINTER (vao_id), v);
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return vao_id;
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}
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int
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gsk_gl_driver_create_render_target (GskGLDriver *driver,
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int texture_id,
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gboolean add_depth_buffer,
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gboolean add_stencil_buffer)
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{
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GLuint fbo_id, depth_stencil_buffer_id;
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Texture *t;
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Fbo f;
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g_return_val_if_fail (GSK_IS_GL_DRIVER (driver), -1);
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g_return_val_if_fail (driver->in_frame, -1);
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t = gsk_gl_driver_get_texture (driver, texture_id);
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if (t == NULL)
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return -1;
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if (t->fbos == NULL)
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{
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t->fbos = g_array_new (FALSE, FALSE, sizeof (Fbo));
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g_array_set_clear_func (t->fbos, fbo_clear);
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}
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glGenFramebuffers (1, &fbo_id);
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glBindFramebuffer (GL_FRAMEBUFFER, fbo_id);
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glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, t->texture_id, 0);
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if (add_depth_buffer || add_stencil_buffer)
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glGenRenderbuffersEXT (1, &depth_stencil_buffer_id);
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else
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depth_stencil_buffer_id = 0;
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glBindRenderbuffer (GL_RENDERBUFFER, depth_stencil_buffer_id);
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if (add_depth_buffer || add_stencil_buffer)
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{
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if (add_stencil_buffer)
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glRenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, t->width, t->height);
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else
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glRenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, t->width, t->height);
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if (add_depth_buffer)
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glFramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
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GL_RENDERBUFFER, depth_stencil_buffer_id);
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if (add_stencil_buffer)
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glFramebufferRenderbufferEXT (GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT,
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GL_RENDERBUFFER, depth_stencil_buffer_id);
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}
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f.fbo_id = fbo_id;
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f.depth_stencil_id = depth_stencil_buffer_id;
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g_array_append_val (t->fbos, f);
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glBindFramebuffer (GL_FRAMEBUFFER, driver->default_fbo.fbo_id);
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return fbo_id;
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}
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void
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gsk_gl_driver_bind_source_texture (GskGLDriver *driver,
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int texture_id)
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{
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Texture *t;
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g_return_if_fail (GSK_IS_GL_DRIVER (driver));
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g_return_if_fail (driver->in_frame);
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t = gsk_gl_driver_get_texture (driver, texture_id);
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if (t == NULL)
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{
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g_critical ("No texture %d found.", texture_id);
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return;
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}
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if (driver->bound_source_texture != t)
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{
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glActiveTexture (GL_TEXTURE0);
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glBindTexture (GL_TEXTURE_2D, t->texture_id);
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driver->bound_source_texture = t;
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}
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}
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void
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gsk_gl_driver_bind_mask_texture (GskGLDriver *driver,
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int texture_id)
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{
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Texture *t;
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g_return_if_fail (GSK_IS_GL_DRIVER (driver));
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g_return_if_fail (driver->in_frame);
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t = gsk_gl_driver_get_texture (driver, texture_id);
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if (t == NULL)
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{
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g_critical ("No texture %d found.", texture_id);
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return;
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}
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if (driver->bound_mask_texture != t)
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{
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glActiveTexture (GL_TEXTURE0 + 1);
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glBindTexture (GL_TEXTURE_2D, t->texture_id);
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glActiveTexture (GL_TEXTURE0);
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driver->bound_mask_texture = t;
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}
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}
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void
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gsk_gl_driver_bind_vao (GskGLDriver *driver,
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int vao_id)
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{
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Vao *v;
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g_return_if_fail (GSK_IS_GL_DRIVER (driver));
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g_return_if_fail (driver->in_frame);
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v = gsk_gl_driver_get_vao (driver, vao_id);
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if (v == NULL)
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{
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g_critical ("No VAO %d found.", vao_id);
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return;
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}
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if (driver->bound_vao != v)
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{
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glBindVertexArray (v->vao_id);
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glBindBuffer (GL_ARRAY_BUFFER, v->buffer_id);
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glEnableVertexAttribArray (v->position_id);
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glEnableVertexAttribArray (v->uv_id);
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driver->bound_vao = v;
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}
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}
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gboolean
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gsk_gl_driver_bind_render_target (GskGLDriver *driver,
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int texture_id)
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{
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int status;
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Fbo *f;
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g_return_val_if_fail (GSK_IS_GL_DRIVER (driver), FALSE);
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g_return_val_if_fail (driver->in_frame, FALSE);
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f = gsk_gl_driver_get_fbo (driver, texture_id);
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if (f == NULL)
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{
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g_critical ("No render target associated to texture %d found.", texture_id);
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return FALSE;
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}
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if (f != driver->bound_fbo)
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{
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glBindFramebuffer (GL_FRAMEBUFFER, f->fbo_id);
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driver->bound_fbo = f;
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}
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status = glCheckFramebufferStatus (GL_FRAMEBUFFER);
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return status == GL_FRAMEBUFFER_COMPLETE;
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}
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void
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gsk_gl_driver_destroy_texture (GskGLDriver *driver,
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int texture_id)
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{
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g_return_if_fail (GSK_IS_GL_DRIVER (driver));
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g_hash_table_remove (driver->textures, GINT_TO_POINTER (texture_id));
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}
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void
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gsk_gl_driver_destroy_vao (GskGLDriver *driver,
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int vao_id)
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{
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g_return_if_fail (GSK_IS_GL_DRIVER (driver));
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g_hash_table_remove (driver->vaos, GINT_TO_POINTER (vao_id));
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}
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static void
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gsk_gl_driver_set_texture_parameters (GskGLDriver *driver,
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int min_filter,
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int mag_filter)
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{
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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}
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void
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gsk_gl_driver_init_texture_empty (GskGLDriver *driver,
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int texture_id)
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{
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Texture *t;
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g_return_if_fail (GSK_IS_GL_DRIVER (driver));
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t = gsk_gl_driver_get_texture (driver, texture_id);
|
|
if (t == NULL)
|
|
{
|
|
g_critical ("No texture %d found.", texture_id);
|
|
return;
|
|
}
|
|
|
|
if (!(driver->bound_source_texture == t || driver->bound_mask_texture == t))
|
|
{
|
|
g_critical ("You must bind the texture before initializing it.");
|
|
return;
|
|
}
|
|
|
|
gsk_gl_driver_set_texture_parameters (driver, t->min_filter, t->mag_filter);
|
|
|
|
if (gdk_gl_context_get_use_es (driver->gl_context))
|
|
glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, t->width, t->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
|
|
else
|
|
glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, t->width, t->height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
|
|
|
|
glBindTexture (GL_TEXTURE_2D, 0);
|
|
}
|
|
|
|
void
|
|
gsk_gl_driver_init_texture_with_surface (GskGLDriver *driver,
|
|
int texture_id,
|
|
cairo_surface_t *surface,
|
|
int min_filter,
|
|
int mag_filter)
|
|
{
|
|
Texture *t;
|
|
|
|
g_return_if_fail (GSK_IS_GL_DRIVER (driver));
|
|
|
|
t = gsk_gl_driver_get_texture (driver, texture_id);
|
|
if (t == NULL)
|
|
{
|
|
g_critical ("No texture %d found.", texture_id);
|
|
return;
|
|
}
|
|
|
|
if (!(driver->bound_source_texture == t || driver->bound_mask_texture == t))
|
|
{
|
|
g_critical ("You must bind the texture before initializing it.");
|
|
return;
|
|
}
|
|
|
|
gsk_gl_driver_set_texture_parameters (driver, min_filter, mag_filter);
|
|
|
|
gdk_cairo_surface_upload_to_gl (surface, GL_TEXTURE_2D, t->width, t->height, NULL);
|
|
|
|
t->min_filter = min_filter;
|
|
t->mag_filter = mag_filter;
|
|
|
|
if (t->min_filter != GL_NEAREST)
|
|
glGenerateMipmap (GL_TEXTURE_2D);
|
|
|
|
glBindTexture (GL_TEXTURE_2D, 0);
|
|
}
|