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[041/906] * sys/glsink/glextensions.c: * sys/glsink/glextensions.h: * sys/glsink/glvideo.c: * sys/glsink/glvideo.h: * sys/glsink/gstglbuffer.c: * sys/glsink/gstgldownload.c: * sys/glsink/gstglupload.c: A careful read of the documentation reveals that I can't use renderbuffers as textures. Duh. Checkpoint because I'm about to rewrite a bunch of code.

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David Schleef 2007-12-22 05:01:57 +00:00 committed by Tim-Philipp Müller
parent 4c892cb683
commit c4a58e40e1
3 changed files with 64 additions and 4 deletions
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2
gst-libs/gst/gl/glextensions.c
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@ -179,3 +179,5 @@ DEFINE_FUNC (glFramebufferRenderbufferEXT, (GLenum target, GLenum attachment,
DEFINE_FUNC (glGetFramebufferAttachmentParameterivEXT, (GLenum target,
GLenum pname, GLint * params), (target, pname, params));
DEFINE_FUNC (glGenerateMipmapEXT, (GLenum target), (target));
DEFINE_FUNC (glWindowPos2iARB, (GLint x, GLint y), (x, y));

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

@ -54,5 +54,7 @@ void glGetFramebufferAttachmentParameterivEXT (GLenum target, GLenum pname,
GLint *params);
void glGenerateMipmapEXT (GLenum target);
void glWindowPos2iARB (GLint x, GLint y);
#endif

64
gst-libs/gst/gl/gstglbuffer.c
View file

@ -5,6 +5,8 @@
#include <gstglbuffer.h>
#include <glvideo.h>
#include <GL/glext.h>
#include <unistd.h>
#include "glextensions.h"
#include <string.h>
@ -86,7 +88,7 @@ gst_gl_buffer_new (GstGLDisplay * display, GstVideoFormat format,
GstGLBuffer *buffer;
XGCValues values = { 0 };
g_return_val_if_fail (format == GST_VIDEO_FORMAT_BGRx, NULL);
g_return_val_if_fail (format == GST_VIDEO_FORMAT_RGB, NULL);
g_return_val_if_fail (width > 0, NULL);
g_return_val_if_fail (height > 0, NULL);
@ -112,17 +114,35 @@ gst_gl_buffer_new (GstGLDisplay * display, GstVideoFormat format,
}
case GST_GL_BUFFER_RBO:
{
GLuint fbo;
gst_gl_display_lock (buffer->display);
glGenFramebuffersEXT (1, &fbo);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, fbo);
glGenRenderbuffersEXT (1, &buffer->rbo);
gst_gl_display_check_error (buffer->display, __LINE__);
glBindRenderbufferEXT (GL_RENDERBUFFER_EXT, buffer->rbo);
gst_gl_display_check_error (buffer->display, __LINE__);
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT1_EXT, GL_RENDERBUFFER_EXT, buffer->rbo);
gst_gl_display_check_error (buffer->display, __LINE__);
glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT, GL_RGB,
buffer->width, buffer->height);
gst_gl_display_check_error (buffer->display, __LINE__);
glDrawBuffer (GL_COLOR_ATTACHMENT1_EXT);
glReadBuffer (GL_COLOR_ATTACHMENT1_EXT);
{
GLint status;
status = glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT);
g_assert (status == GL_FRAMEBUFFER_COMPLETE_EXT);
}
glDeleteFramebuffersEXT (1, &fbo);
gst_gl_display_unlock (buffer->display);
break;
@ -170,6 +190,8 @@ gst_gl_buffer_upload (GstGLBuffer * buffer, void *data)
{
unsigned int fbo;
g_assert (glIsRenderbufferEXT (buffer->rbo));
glGenFramebuffersEXT (1, &fbo);
glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, fbo);
@ -177,11 +199,40 @@ gst_gl_buffer_upload (GstGLBuffer * buffer, void *data)
GL_COLOR_ATTACHMENT1_EXT, GL_RENDERBUFFER_EXT, buffer->rbo);
glDrawBuffer (GL_COLOR_ATTACHMENT1_EXT);
//glWindowPos2iARB(0, 0);
glDrawPixels (buffer->width, buffer->height, GL_RGBA,
glReadBuffer (GL_COLOR_ATTACHMENT1_EXT);
g_assert (glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT) ==
GL_FRAMEBUFFER_COMPLETE_EXT);
#if 0
{
void *newdata;
/* FIXME: Some timing issue causes this to work. Note that
* we're not actually using the copied buffer. */
gst_gl_display_check_error (buffer->display, __LINE__);
glWindowPos2iARB (0, 0);
glDrawPixels (buffer->width, buffer->height, GL_RGB,
GL_UNSIGNED_BYTE, data);
newdata = malloc (4 * buffer->width * buffer->height);
//memcpy (newdata, data, 1*buffer->width*buffer->height);
memset (newdata, 255, 3 * buffer->width * buffer->height);
free (newdata);
}
#else
gst_gl_display_check_error (buffer->display, __LINE__);
glWindowPos2iARB (0, 0);
glDrawPixels (buffer->width, buffer->height, GL_RGB,
GL_UNSIGNED_BYTE, data);
#endif
gst_gl_display_check_error (buffer->display, __LINE__);
glDeleteFramebuffersEXT (1, &fbo);
gst_gl_display_check_error (buffer->display, __LINE__);
g_assert (glIsRenderbufferEXT (buffer->rbo));
break;
}
@ -223,8 +274,13 @@ gst_gl_buffer_download (GstGLBuffer * buffer, void *data)
glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT1_EXT, GL_RENDERBUFFER_EXT, buffer->rbo);
glDrawBuffer (GL_COLOR_ATTACHMENT1_EXT);
glReadBuffer (GL_COLOR_ATTACHMENT1_EXT);
glReadPixels (0, 0, buffer->width, buffer->height, GL_RGBA,
g_assert (glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT) ==
GL_FRAMEBUFFER_COMPLETE_EXT);
glReadPixels (0, 0, buffer->width, buffer->height / 2, GL_RGBA,
GL_UNSIGNED_BYTE, data);
glDeleteFramebuffersEXT (1, &fbo);