[gtk+/wip/ebassi/gsk-renderer: 37/58] gsk: Add GskGLDriver
- From: Emmanuele Bassi <ebassi src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk+/wip/ebassi/gsk-renderer: 37/58] gsk: Add GskGLDriver
- Date: Wed, 27 Jul 2016 10:49:04 +0000 (UTC)
commit 138e9729c7cc3242907f5379b4fbaab41aa11056
Author: Emmanuele Bassi <ebassi gnome org>
Date: Fri Jul 8 16:21:13 2016 +0100
gsk: Add GskGLDriver
We can move the caching and management of textures, VAOs, and state of
the GL machinery into a single object, GskGLDriver.
gsk/Makefile.am | 2 +
gsk/gskgldriver.c | 369 ++++++++++++++++++++++++++++++++++++++++++++++
gsk/gskgldriverprivate.h | 45 ++++++
gsk/gskglrenderer.c | 219 +++++++++------------------
4 files changed, 487 insertions(+), 148 deletions(-)
---
diff --git a/gsk/Makefile.am b/gsk/Makefile.am
index 7edabe3..3f5f4d1 100644
--- a/gsk/Makefile.am
+++ b/gsk/Makefile.am
@@ -36,6 +36,7 @@ gsk_public_source_h = \
gsk_private_source_h = \
gskcairorendererprivate.h \
gskdebugprivate.h \
+ gskgldriverprivate.h \
gskglrendererprivate.h \
gskprivate.h \
gskrendererprivate.h \
@@ -52,6 +53,7 @@ gsk_built_source_c = \
gsk_source_c = \
gskcairorenderer.c \
gskdebug.c \
+ gskgldriver.c \
gskglrenderer.c \
gskrenderer.c \
gskrendernode.c \
diff --git a/gsk/gskgldriver.c b/gsk/gskgldriver.c
new file mode 100644
index 0000000..0ed1493
--- /dev/null
+++ b/gsk/gskgldriver.c
@@ -0,0 +1,369 @@
+#include "config.h"
+
+#include "gskgldriverprivate.h"
+
+#include "gskdebugprivate.h"
+
+#include <gdk/gdk.h>
+#include <epoxy/gl.h>
+
+typedef struct {
+ GLuint texture_id;
+ int width;
+ int height;
+} Texture;
+
+typedef struct {
+ GLuint vao_id;
+ GLuint buffer_id;
+ GLuint position_id;
+ GLuint uv_id;
+} Vao;
+
+struct _GskGLDriver
+{
+ GObject parent_instance;
+
+ GdkGLContext *gl_context;
+
+ GArray *textures;
+ GArray *vaos;
+
+ Texture *bound_source_texture;
+ Texture *bound_mask_texture;
+ Vao *bound_vao;
+
+ gboolean in_frame : 1;
+};
+
+enum
+{
+ PROP_GL_CONTEXT = 1,
+
+ N_PROPS
+};
+
+static GParamSpec *gsk_gl_driver_properties[N_PROPS];
+
+G_DEFINE_TYPE (GskGLDriver, gsk_gl_driver, G_TYPE_OBJECT)
+
+static void
+texture_clear (gpointer data)
+{
+ Texture *t = data;
+
+ glDeleteTextures (1, &t->texture_id);
+}
+
+static void
+vao_clear (gpointer data)
+{
+ Vao *v = data;
+
+ glDeleteBuffers (1, &v->buffer_id);
+ glDeleteVertexArrays (1, &v->vao_id);
+}
+
+static void
+gsk_gl_driver_finalize (GObject *gobject)
+{
+ GskGLDriver *self = GSK_GL_DRIVER (gobject);
+
+ g_clear_pointer (&self->textures, g_array_unref);
+ g_clear_pointer (&self->vaos, g_array_unref);
+
+ g_clear_object (&self->gl_context);
+
+ G_OBJECT_CLASS (gsk_gl_driver_parent_class)->finalize (gobject);
+}
+
+static void
+gsk_gl_driver_set_property (GObject *gobject,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GskGLDriver *self = GSK_GL_DRIVER (gobject);
+
+ switch (prop_id)
+ {
+ case PROP_GL_CONTEXT:
+ self->gl_context = g_value_dup_object (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+ }
+}
+
+static void
+gsk_gl_driver_get_property (GObject *gobject,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GskGLDriver *self = GSK_GL_DRIVER (gobject);
+
+ switch (prop_id)
+ {
+ case PROP_GL_CONTEXT:
+ g_value_set_object (value, self->gl_context);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
+ }
+}
+
+static void
+gsk_gl_driver_class_init (GskGLDriverClass *klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+ gobject_class->set_property = gsk_gl_driver_set_property;
+ gobject_class->get_property = gsk_gl_driver_get_property;
+ gobject_class->finalize = gsk_gl_driver_finalize;
+
+ gsk_gl_driver_properties[PROP_GL_CONTEXT] =
+ g_param_spec_object ("gl-context", "GL Context", "The GL context used by the driver",
+ GDK_TYPE_GL_CONTEXT,
+ G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
+
+ g_object_class_install_properties (gobject_class, N_PROPS, gsk_gl_driver_properties);
+}
+
+static void
+gsk_gl_driver_init (GskGLDriver *self)
+{
+ self->textures = g_array_new (FALSE, FALSE, sizeof (Texture));
+ g_array_set_clear_func (self->textures, texture_clear);
+
+ self->vaos = g_array_new (FALSE, FALSE, sizeof (Vao));
+ g_array_set_clear_func (self->vaos, vao_clear);
+}
+
+GskGLDriver *
+gsk_gl_driver_new (GdkGLContext *context)
+{
+ g_return_val_if_fail (GDK_IS_GL_CONTEXT (context), NULL);
+
+ return g_object_new (GSK_TYPE_GL_DRIVER,
+ "gl-context", context,
+ NULL);
+}
+
+void
+gsk_gl_driver_begin_frame (GskGLDriver *driver)
+{
+ g_return_if_fail (GSK_IS_GL_DRIVER (driver));
+ g_return_if_fail (!driver->in_frame);
+
+ driver->in_frame = TRUE;
+
+ glActiveTexture (GL_TEXTURE0);
+ glBindTexture (GL_TEXTURE_2D, 0);
+
+ glActiveTexture (GL_TEXTURE0 + 1);
+ glBindTexture (GL_TEXTURE_2D, 0);
+
+ glBindVertexArray (0);
+ glUseProgram (0);
+
+ glActiveTexture (GL_TEXTURE0);
+}
+
+void
+gsk_gl_driver_end_frame (GskGLDriver *driver)
+{
+ g_return_if_fail (GSK_IS_GL_DRIVER (driver));
+ g_return_if_fail (driver->in_frame);
+
+ glBindTexture (GL_TEXTURE_2D, 0);
+ glUseProgram (0);
+ glBindVertexArray (0);
+
+ driver->bound_source_texture = NULL;
+ driver->bound_mask_texture = NULL;
+ driver->bound_vao = NULL;
+
+ g_array_set_size (driver->textures, 0);
+ g_array_set_size (driver->vaos, 0);
+
+ driver->in_frame = FALSE;
+}
+
+int
+gsk_gl_driver_create_texture (GskGLDriver *driver,
+ int width,
+ int height,
+ int min_filter,
+ int mag_filter,
+ cairo_surface_t *surface)
+{
+ guint texture_id;
+ Texture t;
+
+ glGenTextures (1, &texture_id);
+ glBindTexture (GL_TEXTURE_2D, texture_id);
+
+ glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+ glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter);
+ glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter);
+
+ gdk_cairo_surface_upload_to_gl (surface, GL_TEXTURE_2D, width, height, NULL);
+
+ if (min_filter != GL_NEAREST)
+ glGenerateMipmap (GL_TEXTURE_2D);
+
+ t.texture_id = texture_id;
+ t.width = width;
+ t.height = height;
+ g_array_append_val (driver->textures, t);
+
+ return texture_id;
+}
+
+int
+gsk_gl_driver_create_vao_for_quad (GskGLDriver *driver,
+ int position_id,
+ int uv_id,
+ int n_quads,
+ GskQuadVertex *quads)
+
+{
+ GLuint vao_id, buffer_id;
+ Vao v;
+
+ g_return_val_if_fail (GSK_IS_GL_DRIVER (driver), -1);
+
+ glGenVertexArrays (1, &vao_id);
+ glBindVertexArray (vao_id);
+
+ glGenBuffers (1, &buffer_id);
+ glBindBuffer (GL_ARRAY_BUFFER, buffer_id);
+ glBufferData (GL_ARRAY_BUFFER, n_quads, quads, GL_STATIC_DRAW);
+
+ glEnableVertexAttribArray (position_id);
+ glVertexAttribPointer (position_id, 2, GL_FLOAT, GL_FALSE,
+ sizeof (GskQuadVertex),
+ (void *) G_STRUCT_OFFSET (GskQuadVertex, position));
+
+ glEnableVertexAttribArray (uv_id);
+ glVertexAttribPointer (uv_id, 2, GL_FLOAT, GL_FALSE,
+ sizeof (GskQuadVertex),
+ (void *) G_STRUCT_OFFSET (GskQuadVertex, uv));
+
+ glBindBuffer (GL_ARRAY_BUFFER, 0);
+ glBindVertexArray (0);
+
+ v.vao_id = vao_id;
+ v.buffer_id = buffer_id;
+ v.position_id = position_id;
+ v.uv_id = uv_id;
+ g_array_append_val (driver->vaos, v);
+
+ return vao_id;
+}
+
+static Texture *
+gsk_gl_driver_get_texture (GskGLDriver *driver,
+ int texture_id)
+{
+ int i;
+
+ for (i = 0; i < driver->textures->len; i++)
+ {
+ Texture *t = &g_array_index (driver->textures, Texture, i);
+ if (t->texture_id == texture_id)
+ return t;
+ }
+
+ return NULL;
+}
+
+static Vao *
+gsk_gl_driver_get_vao (GskGLDriver *driver,
+ int vao_id)
+{
+ int i;
+
+ for (i = 0; i < driver->vaos->len; i++)
+ {
+ Vao *v = &g_array_index (driver->vaos, Vao, i);
+ if (v->vao_id == vao_id)
+ return v;
+ }
+
+ return NULL;
+}
+
+void
+gsk_gl_driver_bind_source_texture (GskGLDriver *driver,
+ int texture_id)
+{
+ Texture *t;
+
+ g_return_if_fail (GSK_IS_GL_DRIVER (driver));
+ g_return_if_fail (driver->in_frame);
+
+ t = gsk_gl_driver_get_texture (driver, texture_id);
+ if (t == NULL)
+ return;
+
+ if (driver->bound_source_texture != t)
+ {
+ glActiveTexture (GL_TEXTURE0);
+ glBindTexture (GL_TEXTURE_2D, t->texture_id);
+
+ driver->bound_source_texture = t;
+ }
+}
+
+void
+gsk_gl_driver_bind_mask_texture (GskGLDriver *driver,
+ int texture_id)
+{
+ Texture *t;
+
+ g_return_if_fail (GSK_IS_GL_DRIVER (driver));
+ g_return_if_fail (driver->in_frame);
+
+ t = gsk_gl_driver_get_texture (driver, texture_id);
+ if (t == NULL)
+ return;
+
+ if (driver->bound_mask_texture != t)
+ {
+ glActiveTexture (GL_TEXTURE0 + 1);
+ glBindTexture (GL_TEXTURE_2D, t->texture_id);
+
+ glActiveTexture (GL_TEXTURE0);
+
+ driver->bound_mask_texture = t;
+ }
+}
+
+void
+gsk_gl_driver_bind_vao (GskGLDriver *driver,
+ int vao_id)
+{
+ Vao *v;
+
+ g_return_if_fail (GSK_IS_GL_DRIVER (driver));
+ g_return_if_fail (driver->in_frame);
+
+ v = gsk_gl_driver_get_vao (driver, vao_id);
+ if (v == NULL)
+ return;
+
+ if (driver->bound_vao != v)
+ {
+ glBindVertexArray (v->vao_id);
+ glBindBuffer (GL_ARRAY_BUFFER, v->buffer_id);
+ glEnableVertexAttribArray (v->position_id);
+ glEnableVertexAttribArray (v->uv_id);
+
+ driver->bound_vao = v;
+ }
+}
diff --git a/gsk/gskgldriverprivate.h b/gsk/gskgldriverprivate.h
new file mode 100644
index 0000000..53f97cd
--- /dev/null
+++ b/gsk/gskgldriverprivate.h
@@ -0,0 +1,45 @@
+#ifndef __GSK_GL_DRIVER_PRIVATE_H__
+#define __GSK_GL_DRIVER_PRIVATE_H__
+
+#include <cairo.h>
+#include <gdk/gdk.h>
+#include <graphene.h>
+
+G_BEGIN_DECLS
+
+#define GSK_TYPE_GL_DRIVER (gsk_gl_driver_get_type ())
+
+G_DECLARE_FINAL_TYPE (GskGLDriver, gsk_gl_driver, GSK, GL_DRIVER, GObject)
+
+typedef struct {
+ float position[2];
+ float uv[2];
+} GskQuadVertex;
+
+GskGLDriver * gsk_gl_driver_new (GdkGLContext *context);
+
+void gsk_gl_driver_begin_frame (GskGLDriver *driver);
+void gsk_gl_driver_end_frame (GskGLDriver *driver);
+
+int gsk_gl_driver_create_texture (GskGLDriver *driver,
+ int width,
+ int height,
+ int min_filter,
+ int mag_filter,
+ cairo_surface_t *surface);
+int gsk_gl_driver_create_vao_for_quad (GskGLDriver *driver,
+ int position_id,
+ int uv_id,
+ int n_vertices,
+ GskQuadVertex *vertices);
+
+void gsk_gl_driver_bind_source_texture (GskGLDriver *driver,
+ int texture_id);
+void gsk_gl_driver_bind_mask_texture (GskGLDriver *driver,
+ int texture_id);
+void gsk_gl_driver_bind_vao (GskGLDriver *driver,
+ int vao_id);
+
+G_END_DECLS
+
+#endif /* __GSK_GL_DRIVER_PRIVATE_H__ */
diff --git a/gsk/gskglrenderer.c b/gsk/gskglrenderer.c
index f0d4344..8291107 100644
--- a/gsk/gskglrenderer.c
+++ b/gsk/gskglrenderer.c
@@ -4,6 +4,7 @@
#include "gskdebugprivate.h"
#include "gskenums.h"
+#include "gskgldriverprivate.h"
#include "gskrendererprivate.h"
#include "gskrendernodeprivate.h"
#include "gskrendernodeiter.h"
@@ -87,8 +88,13 @@ struct _GskGLRenderer
GQuark uniforms[N_UNIFORMS];
GQuark attributes[N_ATTRIBUTES];
+ GskGLDriver *gl_driver;
+
GskShaderBuilder *shader_builder;
+ int gl_min_filter;
+ int gl_mag_filter;
+
int blend_program_id;
int blit_program_id;
@@ -108,8 +114,6 @@ struct _GskGLRendererClass
GskRendererClass parent_class;
};
-static void render_item_clear (gpointer data_);
-
G_DEFINE_TYPE (GskGLRenderer, gsk_gl_renderer, GSK_TYPE_RENDERER)
static void
@@ -415,6 +419,9 @@ gsk_gl_renderer_realize (GskRenderer *renderer)
gdk_gl_context_make_current (self->context);
+ g_assert (self->gl_driver == NULL);
+ self->gl_driver = gsk_gl_driver_new (self->context);
+
GSK_NOTE (OPENGL, g_print ("Creating buffers and programs\n"));
if (!gsk_gl_renderer_create_programs (self))
return FALSE;
@@ -440,6 +447,8 @@ gsk_gl_renderer_unrealize (GskRenderer *renderer)
gsk_gl_renderer_destroy_buffers (self);
gsk_gl_renderer_destroy_programs (self);
+ g_clear_object (&self->gl_driver);
+
if (self->context == gdk_gl_context_get_current ())
gdk_gl_context_clear_current ();
}
@@ -471,97 +480,29 @@ gsk_gl_renderer_update_frustum (GskGLRenderer *self,
GSK_NOTE (OPENGL, graphene_matrix_print (&self->mvp));
}
-static void
-render_item_clear (gpointer data_)
-{
- RenderItem *item = data_;
-
- GSK_NOTE (OPENGL, g_print ("Destroying render item [%p] buffer %u\n",
- item,
- item->render_data.buffer_id));
- glDeleteBuffers (1, &item->render_data.buffer_id);
- item->render_data.buffer_id = 0;
-
- GSK_NOTE (OPENGL, g_print ("Destroying render item [%p] texture %u\n",
- item,
- item->render_data.texture_id));
- glDeleteTextures (1, &item->render_data.texture_id);
- item->render_data.texture_id = 0;
-
- graphene_matrix_init_identity (&item->mvp);
-
- item->opacity = 1;
-}
-
#define N_VERTICES 6
static void
-render_item (RenderItem *item)
+render_item (GskGLRenderer *self,
+ RenderItem *item)
{
- struct vertex_info {
- float position[2];
- float uv[2];
- };
float mvp[16];
- glBindVertexArray (item->render_data.vao_id);
-
- /* Generate the vertex buffer for the texture quad */
- if (item->render_data.buffer_id == 0)
- {
- struct vertex_info vertex_data[] = {
- { { item->min.x, item->min.y }, { 0, 0 }, },
- { { item->min.x, item->max.y }, { 0, 1 }, },
- { { item->max.x, item->min.y }, { 1, 0 }, },
-
- { { item->max.x, item->max.y }, { 1, 1 }, },
- { { item->min.x, item->max.y }, { 0, 1 }, },
- { { item->max.x, item->min.y }, { 1, 0 }, },
- };
-
- GSK_NOTE (OPENGL, g_print ("Creating quad for render item [%p]\n", item));
-
- glGenBuffers (1, &(item->render_data.buffer_id));
- glBindBuffer (GL_ARRAY_BUFFER, item->render_data.buffer_id);
-
- /* The data won't change */
- glBufferData (GL_ARRAY_BUFFER, sizeof (vertex_data), vertex_data, GL_STATIC_DRAW);
-
- /* Set up the buffers with the computed position and texels */
- glEnableVertexAttribArray (item->render_data.position_location);
- glVertexAttribPointer (item->render_data.position_location, 2, GL_FLOAT, GL_FALSE,
- sizeof (struct vertex_info),
- (void *) G_STRUCT_OFFSET (struct vertex_info, position));
- glEnableVertexAttribArray (item->render_data.uv_location);
- glVertexAttribPointer (item->render_data.uv_location, 2, GL_FLOAT, GL_FALSE,
- sizeof (struct vertex_info),
- (void *) G_STRUCT_OFFSET (struct vertex_info, uv));
- }
- else
- {
- /* We already set up the vertex buffer, so we just need to reuse it */
- glBindBuffer (GL_ARRAY_BUFFER, item->render_data.buffer_id);
- glEnableVertexAttribArray (item->render_data.position_location);
- glEnableVertexAttribArray (item->render_data.uv_location);
- }
+ gsk_gl_driver_bind_vao (self->gl_driver, item->render_data.vao_id);
glUseProgram (item->render_data.program_id);
- /* Use texture unit 0 for the sampler */
- glActiveTexture (GL_TEXTURE0);
- glBindTexture (GL_TEXTURE_2D, item->render_data.texture_id);
+ /* Use texture unit 0 for the source */
glUniform1i (item->render_data.map_location, 0);
+ gsk_gl_driver_bind_source_texture (self->gl_driver, item->render_data.texture_id);
if (item->parent_data != NULL)
{
- if (item->parent_data->texture_id != 0)
- {
- glActiveTexture (GL_TEXTURE1);
- glBindTexture (GL_TEXTURE_2D, item->parent_data->texture_id);
- glUniform1i (item->render_data.parentMap_location, 1);
- }
-
glUniform1i (item->render_data.blendMode_location, item->blend_mode);
+
+ /* Use texture unit 1 for the mask */
+ if (item->parent_data->texture_id != 0)
+ gsk_gl_driver_bind_mask_texture (self->gl_driver, item->parent_data->texture_id);
}
/* Pass the opacity component */
@@ -579,45 +520,6 @@ render_item (RenderItem *item)
item->opaque ? 1 : item->opacity));
glDrawArrays (GL_TRIANGLES, 0, N_VERTICES);
-
- /* Reset the state */
- glBindTexture (GL_TEXTURE_2D, 0);
- glDisableVertexAttribArray (item->render_data.position_location);
- glDisableVertexAttribArray (item->render_data.uv_location);
- glUseProgram (0);
-}
-
-static void
-surface_to_texture (cairo_surface_t *surface,
- graphene_rect_t *clip,
- int min_filter,
- int mag_filter,
- guint *texture_out)
-{
- guint texture_id;
-
- glGenTextures (1, &texture_id);
- glBindTexture (GL_TEXTURE_2D, texture_id);
-
- GSK_NOTE (OPENGL, g_print ("Uploading surface[%p] { w:%g, h:%g } to texid:%d\n",
- surface,
- clip->size.width,
- clip->size.height,
- texture_id));
-
- glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
- glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
- glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter);
- glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter);
-
- gdk_cairo_surface_upload_to_gl (surface, GL_TEXTURE_2D, clip->size.width, clip->size.height, NULL);
-
- if (min_filter != GL_NEAREST)
- glGenerateMipmap (GL_TEXTURE_2D);
-
- GSK_NOTE (OPENGL, g_print ("New texture id %d from surface %p\n", texture_id, surface));
-
- *texture_out = texture_id;
}
static void
@@ -692,7 +594,6 @@ gsk_gl_renderer_add_render_item (GskGLRenderer *self,
RenderItem *parent)
{
graphene_rect_t viewport;
- int gl_min_filter, gl_mag_filter;
cairo_surface_t *surface;
GskRenderNodeIter iter;
graphene_matrix_t mv, projection;
@@ -742,9 +643,11 @@ gsk_gl_renderer_add_render_item (GskGLRenderer *self,
item.blend_mode = gsk_render_node_get_blend_mode (node);
- /* GL objects */
- item.render_data.vao_id = self->vao_id;
- item.render_data.buffer_id = 0;
+ /* Back-pointer to the parent node */
+ if (parent != NULL)
+ item.parent_data = &(parent->render_data);
+ else
+ item.parent_data = NULL;
/* Select the program to use */
if (parent != NULL)
@@ -752,6 +655,9 @@ gsk_gl_renderer_add_render_item (GskGLRenderer *self,
else
program_id = self->blit_program_id;
+ item.render_data.program_id = program_id;
+
+ /* Retrieve all the uniforms and attributes */
item.render_data.map_location =
gsk_shader_builder_get_uniform_location (self->shader_builder, program_id, self->uniforms[MAP]);
item.render_data.parentMap_location =
@@ -768,12 +674,25 @@ gsk_gl_renderer_add_render_item (GskGLRenderer *self,
item.render_data.uv_location =
gsk_shader_builder_get_attribute_location (self->shader_builder, program_id, self->attributes[UV]);
- item.render_data.program_id = program_id;
-
- if (parent != NULL)
- item.parent_data = &(parent->render_data);
- else
- item.parent_data = NULL;
+ /* Create the vertex buffers holding the geometry of the quad */
+ {
+ GskQuadVertex vertex_data[N_VERTICES] = {
+ { { item.min.x, item.min.y }, { 0, 0 }, },
+ { { item.min.x, item.max.y }, { 0, 1 }, },
+ { { item.max.x, item.min.y }, { 1, 0 }, },
+
+ { { item.max.x, item.max.y }, { 1, 1 }, },
+ { { item.min.x, item.max.y }, { 0, 1 }, },
+ { { item.max.x, item.min.y }, { 1, 0 }, },
+ };
+
+ item.render_data.vao_id =
+ gsk_gl_driver_create_vao_for_quad (self->gl_driver,
+ item.render_data.position_location,
+ item.render_data.uv_location,
+ sizeof (GskQuadVertex) * N_VERTICES,
+ vertex_data);
+ }
gsk_renderer_get_projection (GSK_RENDERER (self), &projection);
item.z = project_item (&projection, &mv);
@@ -784,7 +703,6 @@ gsk_gl_renderer_add_render_item (GskGLRenderer *self,
* do a single upload; alternatively, we could use a separate FBO and
* render each texture into it
*/
- get_gl_scaling_filters (GSK_RENDERER (self), &gl_min_filter, &gl_mag_filter);
surface = gsk_render_node_get_surface (node);
/* If the node does not have any surface we skip drawing it, but we still
@@ -796,7 +714,13 @@ gsk_gl_renderer_add_render_item (GskGLRenderer *self,
if (surface == NULL)
goto recurse_children;
- surface_to_texture (surface, &bounds, gl_min_filter, gl_mag_filter, &(item.render_data.texture_id));
+ /* Upload the Cairo surface to a GL texture */
+ item.render_data.texture_id = gsk_gl_driver_create_texture (self->gl_driver,
+ bounds.size.width,
+ bounds.size.height,
+ self->gl_min_filter,
+ self->gl_mag_filter,
+ surface);
GSK_NOTE (OPENGL, g_print ("Adding node <%s>[%p] to render items\n",
node->name != NULL ? node->name : "unnamed",
@@ -841,9 +765,6 @@ gsk_gl_renderer_validate_tree (GskGLRenderer *self,
self->opaque_render_items = g_array_sized_new (FALSE, FALSE, sizeof (RenderItem), n_nodes);
self->transparent_render_items = g_array_sized_new (FALSE, FALSE, sizeof (RenderItem), n_nodes);
- g_array_set_clear_func (self->opaque_render_items, render_item_clear);
- g_array_set_clear_func (self->transparent_render_items, render_item_clear);
-
GSK_NOTE (OPENGL, g_print ("RenderNode -> RenderItem\n"));
gsk_gl_renderer_add_render_item (self, root, NULL);
@@ -904,10 +825,17 @@ gsk_gl_renderer_render (GskRenderer *renderer,
gsk_gl_renderer_allocate_buffers (self, viewport.size.width, viewport.size.height);
gsk_gl_renderer_attach_buffers (self);
- if (self->has_depth_buffer)
- glEnable (GL_DEPTH_TEST);
- else
- glDisable (GL_DEPTH_TEST);
+ gsk_renderer_get_modelview (renderer, &modelview);
+ gsk_renderer_get_projection (renderer, &projection);
+ gsk_gl_renderer_update_frustum (self, &modelview, &projection);
+
+ get_gl_scaling_filters (GSK_RENDERER (self),
+ &self->gl_min_filter,
+ &self->gl_mag_filter);
+ if (!gsk_gl_renderer_validate_tree (self, root))
+ goto out;
+
+ gsk_gl_driver_begin_frame (self->gl_driver);
/* Ensure that the viewport is up to date */
status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
@@ -916,12 +844,7 @@ gsk_gl_renderer_render (GskRenderer *renderer,
gsk_gl_renderer_clear (self);
- gsk_renderer_get_modelview (renderer, &modelview);
- gsk_renderer_get_projection (renderer, &projection);
- gsk_gl_renderer_update_frustum (self, &modelview, &projection);
-
- if (!gsk_gl_renderer_validate_tree (self, root))
- goto out;
+ glDisable (GL_BLEND);
/* Opaque pass: front-to-back */
GSK_NOTE (OPENGL, g_print ("Rendering %u opaque items\n", self->opaque_render_items->len));
@@ -929,10 +852,12 @@ gsk_gl_renderer_render (GskRenderer *renderer,
{
RenderItem *item = &g_array_index (self->opaque_render_items, RenderItem, i);
- render_item (item);
+ render_item (self, item);
}
glEnable (GL_BLEND);
+ glBlendFuncSeparate (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE);
+ glBlendEquation (GL_FUNC_ADD);
/* Transparent pass: back-to-front */
GSK_NOTE (OPENGL, g_print ("Rendering %u transparent items\n", self->transparent_render_items->len));
@@ -940,11 +865,9 @@ gsk_gl_renderer_render (GskRenderer *renderer,
{
RenderItem *item = &g_array_index (self->transparent_render_items, RenderItem, i);
- render_item (item);
+ render_item (self, item);
}
- glDisable (GL_BLEND);
-
/* Draw the output of the GL rendering to the window */
GSK_NOTE (OPENGL, g_print ("Drawing GL content on Cairo surface using a %s\n",
self->texture_id != 0 ? "texture" : "renderbuffer"));
@@ -960,7 +883,7 @@ out:
0, 0, viewport.size.width, viewport.size.height);
gdk_gl_context_make_current (self->context);
-
+ gsk_gl_driver_end_frame (self->gl_driver);
gsk_gl_renderer_clear_tree (self);
}
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