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glmemory: use pbo's for upload

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This commit is contained in:
Matthew Waters 2015-01-14 00:08:11 +11:00 committed by Tim-Philipp Müller
parent 4288866e55
commit a2af67aef0
2 changed files with 71 additions and 6 deletions
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75
gst-libs/gst/gl/gstglmemory.c
View file

@ -388,6 +388,7 @@ _upload_memory (GstGLContext * context, GstGLMemory * gl_mem)
{
const GstGLFuncs *gl;
GLenum gl_format, gl_type;
gpointer data;
if (!GST_GL_MEMORY_FLAG_IS_SET (gl_mem, GST_GL_MEMORY_FLAG_NEED_UPLOAD)) {
return;
@ -408,12 +409,23 @@ _upload_memory (GstGLContext * context, GstGLMemory * gl_mem)
gl->PixelStorei (GL_UNPACK_ALIGNMENT, gl_mem->unpack_length);
}
GST_CAT_LOG (GST_CAT_GL_MEMORY, "upload for texture id:%u, %ux%u",
gl_mem->tex_id, gl_mem->tex_width, GL_MEM_HEIGHT (gl_mem));
GST_CAT_LOG (GST_CAT_GL_MEMORY, "upload for texture id:%u, with pbo %u %ux%u",
gl_mem->tex_id, gl_mem->transfer_pbo, gl_mem->tex_width,
GL_MEM_HEIGHT (gl_mem));
if (gl_mem->transfer_pbo) {
gl->BindBuffer (GL_PIXEL_UNPACK_BUFFER, gl_mem->transfer_pbo);
data = NULL;
} else {
data = gl_mem->data;
}
gl->BindTexture (GL_TEXTURE_2D, gl_mem->tex_id);
gl->TexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, gl_mem->tex_width,
GL_MEM_HEIGHT (gl_mem), gl_format, gl_type, gl_mem->data);
GL_MEM_HEIGHT (gl_mem), gl_format, gl_type, data);
if (gl_mem->transfer_pbo)
gl->BindBuffer (GL_PIXEL_UNPACK_BUFFER, 0);
/* Reset to default values */
if (USING_OPENGL (context) || USING_GLES3 (context)) {
@ -427,6 +439,49 @@ _upload_memory (GstGLContext * context, GstGLMemory * gl_mem)
GST_GL_MEMORY_FLAG_UNSET (gl_mem, GST_GL_MEMORY_FLAG_NEED_UPLOAD);
}
static void
_transfer_upload (GstGLContext * context, GstGLMemory * gl_mem)
{
const GstGLFuncs *gl;
gsize size;
if (!gst_gl_context_check_gl_version (context,
GST_GL_API_OPENGL | GST_GL_API_OPENGL3, 2, 1)
&& !gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
/* not supported */
return;
gl = context->gl_vtable;
if (!gl_mem->transfer_pbo)
gl->GenBuffers (1, &gl_mem->transfer_pbo);
GST_CAT_DEBUG (GST_CAT_GL_MEMORY, "uploading texture %u using pbo %u",
gl_mem->tex_id, gl_mem->transfer_pbo);
size =
GL_MEM_HEIGHT (gl_mem) * GL_MEM_WIDTH (gl_mem) *
_gl_texture_type_n_bytes (gl_mem->tex_type);
if (USING_OPENGL (context) || USING_GLES3 (context)
|| USING_OPENGL3 (context)) {
gl->PixelStorei (GL_UNPACK_ROW_LENGTH, gl_mem->unpack_length);
} else if (USING_GLES2 (context)) {
gl->PixelStorei (GL_UNPACK_ALIGNMENT, gl_mem->unpack_length);
}
gl->BindBuffer (GL_PIXEL_UNPACK_BUFFER, gl_mem->transfer_pbo);
gl->BufferData (GL_PIXEL_UNPACK_BUFFER, size, gl_mem->data, GL_STREAM_DRAW);
gl->BindBuffer (GL_PIXEL_UNPACK_BUFFER, 0);
/* Reset to default values */
if (USING_OPENGL (context) || USING_GLES3 (context)) {
gl->PixelStorei (GL_UNPACK_ROW_LENGTH, 0);
} else if (USING_GLES2 (context)) {
gl->PixelStorei (GL_UNPACK_ALIGNMENT, 4);
}
}
static inline void
_calculate_unpack_length (GstGLMemory * gl_mem)
{
@ -598,8 +653,8 @@ _gl_mem_init (GstGLMemory * mem, GstAllocator * allocator, GstMemory * parent,
_calculate_unpack_length (mem);
GST_CAT_DEBUG (GST_CAT_GL_MEMORY, "new GL texture memory:%p format:%u "
"dimensions:%ux%u size:%" G_GSIZE_FORMAT, mem, mem->tex_type,
mem->tex_width, GL_MEM_HEIGHT (mem), maxsize);
"dimensions:%ux%u stride:%u size:%" G_GSIZE_FORMAT, mem, mem->tex_type,
mem->tex_width, GL_MEM_HEIGHT (mem), GL_MEM_STRIDE (mem), maxsize);
}
static GstGLMemory *
@ -682,13 +737,21 @@ _gl_mem_map (GstGLMemory * gl_mem, gsize maxsize, GstMapFlags flags)
data = gl_mem->data;
}
gl_mem->map_flags = flags;
return data;
}
static void
_gl_mem_unmap (GstGLMemory * gl_mem)
{
/* nothing to do here */
if (gl_mem->map_flags & GST_MAP_WRITE) {
if (!(gl_mem->map_flags & GST_MAP_GL))
gst_gl_context_thread_add (gl_mem->context,
(GstGLContextThreadFunc) _transfer_upload, gl_mem);
}
gl_mem->map_flags = 0;
}
static void

2
gst-libs/gst/gl/gstglmemory.h
View file

@ -100,6 +100,8 @@ struct _GstGLMemory
guint pbo;
guint unpack_length;
guint tex_width;
guint transfer_pbo;
GstMapFlags map_flags;
};
#define GST_CAPS_FEATURE_MEMORY_GL_MEMORY "memory:GLMemory"