[cogl/cogl-1.14: 19/174] Adds a NOP driver
- From: Robert Bragg <rbragg src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [cogl/cogl-1.14: 19/174] Adds a NOP driver
- Date: Tue, 22 Jan 2013 18:32:22 +0000 (UTC)
commit ae713a32d0cb01e73ec2d852cfacf13f844e2619
Author: Robert Bragg <robert linux intel com>
Date: Wed Sep 12 22:39:46 2012 +0100
Adds a NOP driver
This adds a new "nop" driver that does nothing. This can be selected at
runtime either with the COGL_DRIVER=nop environment variable or by
passing COGL_DRIVER_NOP to cogl_renderer_set_driver()
Adding the nop driver gives us a way to test workloads without any
driver and hardware overheads which can help us understand how Cogl's
state tracking performs in isolation.
Having a nop driver can also serve as an shell/outline for creating
other drivers later.
Reviewed-by: Neil Roberts <neil linux intel com>
(cherry picked from commit 90587418233b6438290741d80aedf193ae660cad)
cogl/Makefile.am | 17 +++-
cogl/cogl-context.c | 16 ++-
cogl/cogl-renderer.c | 38 +++++--
cogl/cogl-renderer.h | 2 +
cogl/driver/nop/cogl-attribute-nop-private.h | 42 +++++++
cogl/driver/nop/cogl-attribute-nop.c | 43 +++++++
cogl/driver/nop/cogl-clip-stack-nop-private.h | 38 ++++++
cogl/driver/nop/cogl-clip-stack-nop.c | 37 ++++++
cogl/driver/nop/cogl-driver-nop.c | 83 +++++++++++++
cogl/driver/nop/cogl-framebuffer-nop-private.h | 89 ++++++++++++++
cogl/driver/nop/cogl-framebuffer-nop.c | 110 +++++++++++++++++
cogl/driver/nop/cogl-texture-2d-nop-private.h | 112 +++++++++++++++++
cogl/driver/nop/cogl-texture-2d-nop.c | 156 ++++++++++++++++++++++++
13 files changed, 766 insertions(+), 17 deletions(-)
---
diff --git a/cogl/Makefile.am b/cogl/Makefile.am
index 40c375a..f693f84 100644
--- a/cogl/Makefile.am
+++ b/cogl/Makefile.am
@@ -136,6 +136,20 @@ cogl_experimental_h = \
cogl_nodist_experimental_h = \
$(NULL)
+# nop driver
+cogl_driver_sources = \
+ $(srcdir)/driver/nop/cogl-driver-nop-private.h \
+ $(srcdir)/driver/nop/cogl-driver-nop.c \
+ $(srcdir)/driver/nop/cogl-framebuffer-nop-private.h \
+ $(srcdir)/driver/nop/cogl-framebuffer-nop.c \
+ $(srcdir)/driver/nop/cogl-attribute-nop-private.h \
+ $(srcdir)/driver/nop/cogl-attribute-nop.c \
+ $(srcdir)/driver/nop/cogl-clip-stack-nop-private.h \
+ $(srcdir)/driver/nop/cogl-clip-stack-nop.c \
+ $(srcdir)/driver/nop/cogl-texture-2d-nop-private.h \
+ $(srcdir)/driver/nop/cogl-texture-2d-nop.c \
+ $(NULL)
+
# gl driver sources
cogl_gl_prototypes_h = \
$(srcdir)/gl-prototypes/cogl-gles2-functions.h \
@@ -145,8 +159,7 @@ cogl_gl_prototypes_h = \
$(srcdir)/gl-prototypes/cogl-glsl-functions.h \
$(NULL)
-# driver sources
-cogl_driver_sources = \
+cogl_driver_sources += \
$(srcdir)/driver/gl/cogl-framebuffer-gl.c \
$(srcdir)/driver/gl/cogl-texture-2d-gl-private.h \
$(srcdir)/driver/gl/cogl-texture-2d-gl.c \
diff --git a/cogl/cogl-context.c b/cogl/cogl-context.c
index 530dc2b..549569a 100644
--- a/cogl/cogl-context.c
+++ b/cogl/cogl-context.c
@@ -261,10 +261,15 @@ cogl_context_new (CoglDisplay *display,
context->texture_units =
g_array_new (FALSE, FALSE, sizeof (CoglTextureUnit));
- /* See cogl-pipeline.c for more details about why we leave texture unit 1
- * active by default... */
- context->active_texture_unit = 1;
- GE (context, glActiveTexture (GL_TEXTURE1));
+ if (context->driver == COGL_DRIVER_GL ||
+ context->driver == COGL_DRIVER_GLES1 ||
+ context->driver == COGL_DRIVER_GLES2)
+ {
+ /* See cogl-pipeline.c for more details about why we leave texture unit 1
+ * active by default... */
+ context->active_texture_unit = 1;
+ GE (context, glActiveTexture (GL_TEXTURE1));
+ }
context->legacy_fog_state.enabled = FALSE;
@@ -363,7 +368,8 @@ cogl_context_new (CoglDisplay *display,
context->blit_texture_pipeline = NULL;
#if defined (HAVE_COGL_GL) || defined (HAVE_COGL_GLES)
- if (context->driver != COGL_DRIVER_GLES2)
+ if (context->driver == COGL_DRIVER_GL ||
+ context->driver == COGL_DRIVER_GLES1)
/* The default for GL_ALPHA_TEST is to always pass which is equivalent to
* the test being disabled therefore we assume that for all drivers there
* will be no performance impact if we always leave the test enabled which
diff --git a/cogl/cogl-renderer.c b/cogl/cogl-renderer.c
index 55e520f..30eb4ad 100644
--- a/cogl/cogl-renderer.c
+++ b/cogl/cogl-renderer.c
@@ -88,6 +88,8 @@ extern const CoglTextureDriver _cogl_texture_driver_gles;
extern const CoglDriverVtable _cogl_driver_gles;
#endif
+extern const CoglDriverVtable _cogl_driver_nop;
+
static CoglWinsysVtableGetter _cogl_winsys_vtable_getters[] =
{
#ifdef COGL_HAS_GLX_SUPPORT
@@ -308,6 +310,15 @@ _cogl_renderer_choose_driver (CoglRenderer *renderer,
}
#endif
+ if (renderer->driver_override == COGL_DRIVER_NOP ||
+ (renderer->driver_override == COGL_DRIVER_ANY &&
+ (driver_name == NULL || !g_ascii_strcasecmp (driver_name, "nop"))))
+ {
+ renderer->driver = COGL_DRIVER_NOP;
+ libgl_name = NULL;
+ goto found;
+ }
+
_cogl_set_error (error,
COGL_DRIVER_ERROR,
COGL_DRIVER_ERROR_NO_SUITABLE_DRIVER_FOUND,
@@ -328,16 +339,21 @@ found:
#ifndef HAVE_DIRECTLY_LINKED_GL_LIBRARY
- renderer->libgl_module = g_module_open (libgl_name,
- G_MODULE_BIND_LAZY);
-
- if (renderer->libgl_module == NULL)
+ if (renderer->driver == COGL_DRIVER_GL ||
+ renderer->driver == COGL_DRIVER_GLES1 ||
+ renderer->driver == COGL_DRIVER_GLES2)
{
- _cogl_set_error (error, COGL_DRIVER_ERROR,
- COGL_DRIVER_ERROR_FAILED_TO_LOAD_LIBRARY,
- "Failed to dynamically open the GL library \"%s\"",
- libgl_name);
- return FALSE;
+ renderer->libgl_module = g_module_open (libgl_name,
+ G_MODULE_BIND_LAZY);
+
+ if (renderer->libgl_module == NULL)
+ {
+ _cogl_set_error (error, COGL_DRIVER_ERROR,
+ COGL_DRIVER_ERROR_FAILED_TO_LOAD_LIBRARY,
+ "Failed to dynamically open the GL library \"%s\"",
+ libgl_name);
+ return FALSE;
+ }
}
#endif /* HAVE_DIRECTLY_LINKED_GL_LIBRARY */
@@ -359,8 +375,10 @@ found:
break;
#endif
+ case COGL_DRIVER_NOP:
default:
- g_assert_not_reached ();
+ renderer->driver_vtable = &_cogl_driver_nop;
+ renderer->texture_driver = NULL;
}
return TRUE;
diff --git a/cogl/cogl-renderer.h b/cogl/cogl-renderer.h
index 9766e77..b1ddb9f 100644
--- a/cogl/cogl-renderer.h
+++ b/cogl/cogl-renderer.h
@@ -328,6 +328,7 @@ cogl_renderer_remove_constraint (CoglRenderer *renderer,
/**
* CoglDriver:
* @COGL_DRIVER_ANY: Implies no preference for which driver is used
+ * @COGL_DRIVER_NOP: A No-Op driver.
* @COGL_DRIVER_GL: An OpenGL driver.
* @COGL_DRIVER_GLES1: An OpenGL ES 1.1 driver.
* @COGL_DRIVER_GLES2: An OpenGL ES 2.0 driver.
@@ -341,6 +342,7 @@ cogl_renderer_remove_constraint (CoglRenderer *renderer,
typedef enum
{
COGL_DRIVER_ANY,
+ COGL_DRIVER_NOP,
COGL_DRIVER_GL,
COGL_DRIVER_GLES1,
COGL_DRIVER_GLES2
diff --git a/cogl/driver/nop/cogl-attribute-nop-private.h b/cogl/driver/nop/cogl-attribute-nop-private.h
new file mode 100644
index 0000000..d494dbd
--- /dev/null
+++ b/cogl/driver/nop/cogl-attribute-nop-private.h
@@ -0,0 +1,42 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ *
+ *
+ * Authors:
+ * Robert Bragg <robert linux intel com>
+ */
+
+#ifndef _COGL_ATTRIBUTE_NOP_PRIVATE_H_
+#define _COGL_ATTRIBUTE_NOP_PRIVATE_H_
+
+#include "cogl-types.h"
+#include "cogl-context-private.h"
+
+void
+_cogl_nop_flush_attributes_state (CoglFramebuffer *framebuffer,
+ CoglPipeline *pipeline,
+ CoglFlushLayerState *layers_state,
+ CoglDrawFlags flags,
+ CoglAttribute **attributes,
+ int n_attributes);
+
+#endif /* _COGL_ATTRIBUTE_NOP_PRIVATE_H_ */
diff --git a/cogl/driver/nop/cogl-attribute-nop.c b/cogl/driver/nop/cogl-attribute-nop.c
new file mode 100644
index 0000000..0572c13
--- /dev/null
+++ b/cogl/driver/nop/cogl-attribute-nop.c
@@ -0,0 +1,43 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "cogl-types.h"
+#include "cogl-framebuffer.h"
+#include "cogl-attribute.h"
+#include "cogl-attribute-private.h"
+#include "cogl-attribute-nop-private.h"
+
+void
+_cogl_nop_flush_attributes_state (CoglFramebuffer *framebuffer,
+ CoglPipeline *pipeline,
+ CoglFlushLayerState *layers_state,
+ CoglDrawFlags flags,
+ CoglAttribute **attributes,
+ int n_attributes)
+{
+}
diff --git a/cogl/driver/nop/cogl-clip-stack-nop-private.h b/cogl/driver/nop/cogl-clip-stack-nop-private.h
new file mode 100644
index 0000000..18cedc0
--- /dev/null
+++ b/cogl/driver/nop/cogl-clip-stack-nop-private.h
@@ -0,0 +1,38 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ *
+ *
+ * Authors:
+ * Robert Bragg <robert linux intel com>
+ */
+
+#ifndef _COGL_CLIP_STACK_NOP_PRIVATE_H_
+#define _COGL_CLIP_STACK_NOP_PRIVATE_H_
+
+#include "cogl-types.h"
+#include "cogl-context-private.h"
+
+void
+_cogl_clip_stack_nop_flush (CoglClipStack *stack,
+ CoglFramebuffer *framebuffer);
+
+#endif /* _COGL_CLIP_STACK_NOP_PRIVATE_H_ */
diff --git a/cogl/driver/nop/cogl-clip-stack-nop.c b/cogl/driver/nop/cogl-clip-stack-nop.c
new file mode 100644
index 0000000..e231e25
--- /dev/null
+++ b/cogl/driver/nop/cogl-clip-stack-nop.c
@@ -0,0 +1,37 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "cogl-clip-stack.h"
+#include "cogl-clip-stack-nop-private.h"
+#include "cogl-framebuffer-private.h"
+
+void
+_cogl_clip_stack_nop_flush (CoglClipStack *stack,
+ CoglFramebuffer *framebuffer)
+{
+}
diff --git a/cogl/driver/nop/cogl-driver-nop.c b/cogl/driver/nop/cogl-driver-nop.c
new file mode 100644
index 0000000..9753cff
--- /dev/null
+++ b/cogl/driver/nop/cogl-driver-nop.c
@@ -0,0 +1,83 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "cogl-private.h"
+#include "cogl-internal.h"
+#include "cogl-context-private.h"
+#include "cogl-feature-private.h"
+#include "cogl-renderer-private.h"
+#include "cogl-error-private.h"
+#include "cogl-framebuffer-nop-private.h"
+#include "cogl-texture-2d-nop-private.h"
+#include "cogl-attribute-nop-private.h"
+#include "cogl-clip-stack-nop-private.h"
+
+static CoglBool
+_cogl_driver_update_features (CoglContext *ctx,
+ CoglError **error)
+{
+ /* _cogl_gpu_info_init (ctx, &ctx->gpu); */
+
+ ctx->private_feature_flags = 0;
+ ctx->feature_flags = 0;
+
+ return TRUE;
+}
+
+const CoglDriverVtable
+_cogl_driver_nop =
+ {
+ NULL, /* pixel_format_from_gl_internal */
+ NULL, /* pixel_format_to_gl */
+ _cogl_driver_update_features,
+ _cogl_offscreen_nop_allocate,
+ _cogl_offscreen_nop_free,
+ _cogl_framebuffer_nop_flush_state,
+ _cogl_framebuffer_nop_clear,
+ _cogl_framebuffer_nop_query_bits,
+ _cogl_framebuffer_nop_finish,
+ _cogl_framebuffer_nop_discard_buffers,
+ _cogl_framebuffer_nop_draw_attributes,
+ _cogl_framebuffer_nop_draw_indexed_attributes,
+ _cogl_texture_2d_nop_free,
+ _cogl_texture_2d_nop_can_create,
+ _cogl_texture_2d_nop_init,
+ _cogl_texture_2d_nop_new_with_size,
+ _cogl_texture_2d_nop_new_from_bitmap,
+#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
+ _cogl_egl_texture_2d_nop_new_from_image,
+#endif
+ _cogl_texture_2d_nop_copy_from_framebuffer,
+ _cogl_texture_2d_nop_get_gl_handle,
+ _cogl_texture_2d_nop_generate_mipmap,
+ _cogl_texture_2d_nop_copy_from_bitmap,
+ NULL, /* texture_2d_get_data */
+ _cogl_nop_flush_attributes_state,
+ _cogl_clip_stack_nop_flush,
+ };
diff --git a/cogl/driver/nop/cogl-framebuffer-nop-private.h b/cogl/driver/nop/cogl-framebuffer-nop-private.h
new file mode 100644
index 0000000..568cdea
--- /dev/null
+++ b/cogl/driver/nop/cogl-framebuffer-nop-private.h
@@ -0,0 +1,89 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ *
+ *
+ * Authors:
+ * Robert Bragg <robert linux intel com>
+ */
+
+#ifndef _COGL_FRAMEBUFFER_NOP_PRIVATE_H_
+#define _COGL_FRAMEBUFFER_NOP_PRIVATE_H_
+
+#include "cogl-types.h"
+#include "cogl-context-private.h"
+
+CoglBool
+_cogl_offscreen_nop_allocate (CoglOffscreen *offscreen,
+ CoglError **error);
+
+void
+_cogl_offscreen_nop_free (CoglOffscreen *offscreen);
+
+void
+_cogl_framebuffer_nop_flush_state (CoglFramebuffer *draw_buffer,
+ CoglFramebuffer *read_buffer,
+ CoglFramebufferState state);
+
+void
+_cogl_framebuffer_nop_clear (CoglFramebuffer *framebuffer,
+ unsigned long buffers,
+ float red,
+ float green,
+ float blue,
+ float alpha);
+
+void
+_cogl_framebuffer_nop_query_bits (CoglFramebuffer *framebuffer,
+ int *red,
+ int *green,
+ int *blue,
+ int *alpha);
+
+void
+_cogl_framebuffer_nop_finish (CoglFramebuffer *framebuffer);
+
+void
+_cogl_framebuffer_nop_discard_buffers (CoglFramebuffer *framebuffer,
+ unsigned long buffers);
+
+void
+_cogl_framebuffer_nop_draw_attributes (CoglFramebuffer *framebuffer,
+ CoglPipeline *pipeline,
+ CoglVerticesMode mode,
+ int first_vertex,
+ int n_vertices,
+ CoglAttribute **attributes,
+ int n_attributes,
+ CoglDrawFlags flags);
+
+void
+_cogl_framebuffer_nop_draw_indexed_attributes (CoglFramebuffer *framebuffer,
+ CoglPipeline *pipeline,
+ CoglVerticesMode mode,
+ int first_vertex,
+ int n_vertices,
+ CoglIndices *indices,
+ CoglAttribute **attributes,
+ int n_attributes,
+ CoglDrawFlags flags);
+
+#endif /* _COGL_FRAMEBUFFER_NOP_PRIVATE_H_ */
diff --git a/cogl/driver/nop/cogl-framebuffer-nop.c b/cogl/driver/nop/cogl-framebuffer-nop.c
new file mode 100644
index 0000000..c4c1348
--- /dev/null
+++ b/cogl/driver/nop/cogl-framebuffer-nop.c
@@ -0,0 +1,110 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2007,2008,2009,2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "cogl-framebuffer-nop-private.h"
+
+#include <glib.h>
+
+
+void
+_cogl_framebuffer_nop_flush_state (CoglFramebuffer *draw_buffer,
+ CoglFramebuffer *read_buffer,
+ CoglFramebufferState state)
+{
+}
+
+CoglBool
+_cogl_offscreen_nop_allocate (CoglOffscreen *offscreen,
+ CoglError **error)
+{
+ return TRUE;
+}
+
+void
+_cogl_offscreen_nop_free (CoglOffscreen *offscreen)
+{
+}
+
+void
+_cogl_framebuffer_nop_clear (CoglFramebuffer *framebuffer,
+ unsigned long buffers,
+ float red,
+ float green,
+ float blue,
+ float alpha)
+{
+}
+
+void
+_cogl_framebuffer_nop_query_bits (CoglFramebuffer *framebuffer,
+ int *red,
+ int *green,
+ int *blue,
+ int *alpha)
+{
+ *red = 0;
+ *green = 0;
+ *blue = 0;
+ *alpha = 0;
+}
+
+void
+_cogl_framebuffer_nop_finish (CoglFramebuffer *framebuffer)
+{
+}
+
+void
+_cogl_framebuffer_nop_discard_buffers (CoglFramebuffer *framebuffer,
+ unsigned long buffers)
+{
+}
+
+void
+_cogl_framebuffer_nop_draw_attributes (CoglFramebuffer *framebuffer,
+ CoglPipeline *pipeline,
+ CoglVerticesMode mode,
+ int first_vertex,
+ int n_vertices,
+ CoglAttribute **attributes,
+ int n_attributes,
+ CoglDrawFlags flags)
+{
+}
+
+void
+_cogl_framebuffer_nop_draw_indexed_attributes (CoglFramebuffer *framebuffer,
+ CoglPipeline *pipeline,
+ CoglVerticesMode mode,
+ int first_vertex,
+ int n_vertices,
+ CoglIndices *indices,
+ CoglAttribute **attributes,
+ int n_attributes,
+ CoglDrawFlags flags)
+{
+}
diff --git a/cogl/driver/nop/cogl-texture-2d-nop-private.h b/cogl/driver/nop/cogl-texture-2d-nop-private.h
new file mode 100644
index 0000000..5374cad
--- /dev/null
+++ b/cogl/driver/nop/cogl-texture-2d-nop-private.h
@@ -0,0 +1,112 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ *
+ *
+ * Authors:
+ * Robert Bragg <robert linux intel com>
+ */
+
+#ifndef _COGL_TEXTURE_2D_NOP_PRIVATE_H_
+#define _COGL_TEXTURE_2D_NOP_PRIVATE_H_
+
+#include "cogl-types.h"
+#include "cogl-context-private.h"
+#include "cogl-texture.h"
+
+void
+_cogl_texture_2d_nop_free (CoglTexture2D *tex_2d);
+
+CoglBool
+_cogl_texture_2d_nop_can_create (CoglContext *ctx,
+ int width,
+ int height,
+ CoglPixelFormat internal_format);
+
+void
+_cogl_texture_2d_nop_init (CoglTexture2D *tex_2d);
+
+CoglTexture2D *
+_cogl_texture_2d_nop_new_with_size (CoglContext *ctx,
+ int width,
+ int height,
+ CoglPixelFormat internal_format,
+ CoglError **error);
+
+CoglTexture2D *
+_cogl_texture_2d_nop_new_from_bitmap (CoglBitmap *bmp,
+ CoglPixelFormat internal_format,
+ CoglError **error);
+
+#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
+CoglTexture2D *
+_cogl_egl_texture_2d_nop_new_from_image (CoglContext *ctx,
+ int width,
+ int height,
+ CoglPixelFormat format,
+ EGLImageKHR image,
+ CoglError **error);
+#endif
+
+void
+_cogl_texture_2d_nop_flush_legacy_texobj_filters (CoglTexture *tex,
+ GLenum min_filter,
+ GLenum mag_filter);
+
+void
+_cogl_texture_2d_nop_flush_legacy_texobj_wrap_modes (CoglTexture *tex,
+ GLenum wrap_mode_s,
+ GLenum wrap_mode_t,
+ GLenum wrap_mode_p);
+
+void
+_cogl_texture_2d_nop_copy_from_framebuffer (CoglTexture2D *tex_2d,
+ CoglFramebuffer *src_fb,
+ int dst_x,
+ int dst_y,
+ int src_x,
+ int src_y,
+ int width,
+ int height);
+
+unsigned int
+_cogl_texture_2d_nop_get_gl_handle (CoglTexture2D *tex_2d);
+
+void
+_cogl_texture_2d_nop_generate_mipmap (CoglTexture2D *tex_2d);
+
+void
+_cogl_texture_2d_nop_copy_from_bitmap (CoglTexture2D *tex_2d,
+ CoglBitmap *bitmap,
+ int dst_x,
+ int dst_y,
+ int src_x,
+ int src_y,
+ int width,
+ int height);
+
+void
+_cogl_texture_2d_nop_get_data (CoglTexture2D *tex_2d,
+ CoglPixelFormat format,
+ size_t rowstride,
+ uint8_t *data);
+
+#endif /* _COGL_TEXTURE_2D_NOP_PRIVATE_H_ */
diff --git a/cogl/driver/nop/cogl-texture-2d-nop.c b/cogl/driver/nop/cogl-texture-2d-nop.c
new file mode 100644
index 0000000..ea4e321
--- /dev/null
+++ b/cogl/driver/nop/cogl-texture-2d-nop.c
@@ -0,0 +1,156 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2009,2010,2011,2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ *
+ * Authors:
+ * Neil Roberts <neil linux intel com>
+ * Robert Bragg <robert linux intel com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "cogl-private.h"
+#include "cogl-texture-2d-nop-private.h"
+#include "cogl-texture-2d-private.h"
+#include "cogl-error-private.h"
+
+void
+_cogl_texture_2d_nop_free (CoglTexture2D *tex_2d)
+{
+}
+
+CoglBool
+_cogl_texture_2d_nop_can_create (CoglContext *ctx,
+ int width,
+ int height,
+ CoglPixelFormat internal_format)
+{
+ return TRUE;
+}
+
+void
+_cogl_texture_2d_nop_init (CoglTexture2D *tex_2d)
+{
+}
+
+CoglTexture2D *
+_cogl_texture_2d_nop_new_with_size (CoglContext *ctx,
+ int width,
+ int height,
+ CoglPixelFormat internal_format,
+ CoglError **error)
+{
+ return _cogl_texture_2d_create_base (ctx,
+ width, height,
+ internal_format);
+}
+
+CoglTexture2D *
+_cogl_texture_2d_nop_new_from_bitmap (CoglBitmap *bmp,
+ CoglPixelFormat internal_format,
+ CoglError **error)
+{
+ return _cogl_texture_2d_nop_new_with_size (_cogl_bitmap_get_context (bmp),
+ cogl_bitmap_get_width (bmp),
+ cogl_bitmap_get_height (bmp),
+ internal_format,
+ error);
+}
+
+#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
+CoglTexture2D *
+_cogl_egl_texture_2d_nop_new_from_image (CoglContext *ctx,
+ int width,
+ int height,
+ CoglPixelFormat format,
+ EGLImageKHR image,
+ CoglError **error)
+{
+ _cogl_set_error (error,
+ COGL_SYSTEM_ERROR,
+ COGL_SYSTEM_ERROR_UNSUPPORTED,
+ "Creating 2D textures from an EGLImage isn't "
+ "supported by the NOP backend");
+ return NULL;
+}
+#endif
+
+void
+_cogl_texture_2d_nop_flush_legacy_texobj_filters (CoglTexture *tex,
+ GLenum min_filter,
+ GLenum mag_filter)
+{
+}
+
+void
+_cogl_texture_2d_nop_flush_legacy_texobj_wrap_modes (CoglTexture *tex,
+ GLenum wrap_mode_s,
+ GLenum wrap_mode_t,
+ GLenum wrap_mode_p)
+{
+}
+
+void
+_cogl_texture_2d_nop_copy_from_framebuffer (CoglTexture2D *tex_2d,
+ CoglFramebuffer *src_fb,
+ int dst_x,
+ int dst_y,
+ int src_x,
+ int src_y,
+ int width,
+ int height)
+{
+}
+
+unsigned int
+_cogl_texture_2d_nop_get_gl_handle (CoglTexture2D *tex_2d)
+{
+ return 0;
+}
+
+void
+_cogl_texture_2d_nop_generate_mipmap (CoglTexture2D *tex_2d)
+{
+}
+
+void
+_cogl_texture_2d_nop_copy_from_bitmap (CoglTexture2D *tex_2d,
+ CoglBitmap *bitmap,
+ int dst_x,
+ int dst_y,
+ int src_x,
+ int src_y,
+ int width,
+ int height)
+{
+}
+
+void
+_cogl_texture_2d_nop_get_data (CoglTexture2D *tex_2d,
+ CoglPixelFormat format,
+ size_t rowstride,
+ uint8_t *data)
+{
+}
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