static void
draw_render (gpointer data)
{
GstGLContext *context = data;
GstGLContextClass *context_class = GST_GL_CONTEXT_GET_CLASS (context);
const GstGLFuncs *gl = context->gl_vtable;
gl->Clear (GL_COLOR_BUFFER_BIT);
gst_gl_shader_use (shader);
if (gl->GenVertexArrays)
gl->BindVertexArray (vao);
else
_bind_buffer (context);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, tex_id);
gst_gl_shader_set_uniform_1i (shader, "s_texture", 0);
gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
if (gl->GenVertexArrays)
gl->BindVertexArray (0);
else
_unbind_buffer (context);
context_class->swap_buffers (context);
}
static gboolean
blit_tex (gpointer data)
{
GstGLContext *context = data;
const GstGLFuncs *gl = context->gl_vtable;
gl->Clear (GL_COLOR_BUFFER_BIT);
gst_gl_shader_use (shader);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, gst_gl_memory_get_texture_id (gl_tex));
gst_gl_shader_set_uniform_1i (shader, "s_texture", 0);
if (gl->GenVertexArrays)
gl->BindVertexArray (vao);
_bind_buffer (context);
gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0);
if (gl->GenVertexArrays)
gl->BindVertexArray (0);
_unbind_buffer (context);
return TRUE;
}
static gboolean
_src_shader_fill_bound_fbo (gpointer impl)
{
struct SrcShader *src = impl;
const GstGLFuncs *gl;
g_return_val_if_fail (src->base.context, FALSE);
g_return_val_if_fail (src->shader, FALSE);
gl = src->base.context->gl_vtable;
gst_gl_shader_use (src->shader);
if (gl->GenVertexArrays)
gl->BindVertexArray (src->vao);
else
_bind_buffer (src);
gl->DrawElements (GL_TRIANGLES, src->n_indices, GL_UNSIGNED_SHORT,
(gpointer) (gintptr) src->index_offset);
if (gl->GenVertexArrays)
gl->BindVertexArray (0);
else
_unbind_buffer (src);
gst_gl_context_clear_shader (src->base.context);
return TRUE;
}
static void
gst_gl_transformation_callback (gpointer stuff)
{
GstGLFilter *filter = GST_GL_FILTER (stuff);
GstGLTransformation *transformation = GST_GL_TRANSFORMATION (filter);
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
GLfloat temp_matrix[16];
gst_gl_context_clear_shader (GST_GL_BASE_FILTER (filter)->context);
gl->BindTexture (GL_TEXTURE_2D, 0);
gl->ClearColor (0.f, 0.f, 0.f, 1.f);
gl->Clear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gst_gl_shader_use (transformation->shader);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, transformation->in_tex);
gst_gl_shader_set_uniform_1i (transformation->shader, "texture", 0);
graphene_matrix_to_float (&transformation->mvp_matrix, temp_matrix);
gst_gl_shader_set_uniform_matrix_4fv (transformation->shader, "mvp",
1, GL_FALSE, temp_matrix);
if (!transformation->vertex_buffer) {
transformation->attr_position =
gst_gl_shader_get_attribute_location (transformation->shader,
"position");
transformation->attr_texture =
gst_gl_shader_get_attribute_location (transformation->shader, "uv");
if (gl->GenVertexArrays) {
gl->GenVertexArrays (1, &transformation->vao);
gl->BindVertexArray (transformation->vao);
}
gl->GenBuffers (1, &transformation->vertex_buffer);
gl->GenBuffers (1, &transformation->vbo_indices);
gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, transformation->vbo_indices);
gl->BufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof (indices), indices,
GL_STATIC_DRAW);
transformation->caps_change = TRUE;
}
if (gl->GenVertexArrays)
gl->BindVertexArray (transformation->vao);
if (transformation->caps_change) {
_upload_vertices (transformation);
_bind_buffer (transformation);
if (gl->GenVertexArrays) {
gl->BindVertexArray (0);
gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
gl->BindBuffer (GL_ARRAY_BUFFER, 0);
}
} else if (!gl->GenVertexArrays) {
_bind_buffer (transformation);
}
gl->DrawElements (GL_TRIANGLE_STRIP, 5, GL_UNSIGNED_SHORT, indices);
if (gl->GenVertexArrays)
gl->BindVertexArray (0);
else
_unbind_buffer (transformation);
gst_gl_context_clear_shader (GST_GL_BASE_FILTER (filter)->context);
transformation->caps_change = FALSE;
}
static gboolean
_callback (gpointer stuff)
{
GstGLFilter *filter = GST_GL_FILTER (stuff);
GstGLFilterCube *cube_filter = GST_GL_FILTER_CUBE (filter);
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
static GLfloat xrot = 0;
static GLfloat yrot = 0;
static GLfloat zrot = 0;
const GLfloat matrix[] = {
0.5f, 0.0f, 0.0f, 0.0f,
0.0f, 0.5f, 0.0f, 0.0f,
0.0f, 0.0f, 0.5f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
};
gl->Enable (GL_DEPTH_TEST);
gl->ClearColor (cube_filter->red, cube_filter->green, cube_filter->blue, 0.0);
gl->Clear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gst_gl_shader_use (cube_filter->shader);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, cube_filter->in_tex->tex_id);
gst_gl_shader_set_uniform_1i (cube_filter->shader, "s_texture", 0);
gst_gl_shader_set_uniform_1f (cube_filter->shader, "xrot_degree", xrot);
gst_gl_shader_set_uniform_1f (cube_filter->shader, "yrot_degree", yrot);
gst_gl_shader_set_uniform_1f (cube_filter->shader, "zrot_degree", zrot);
gst_gl_shader_set_uniform_matrix_4fv (cube_filter->shader, "u_matrix", 1,
GL_FALSE, matrix);
if (!cube_filter->vertex_buffer) {
if (gl->GenVertexArrays) {
gl->GenVertexArrays (1, &cube_filter->vao);
gl->BindVertexArray (cube_filter->vao);
}
gl->GenBuffers (1, &cube_filter->vertex_buffer);
gl->BindBuffer (GL_ARRAY_BUFFER, cube_filter->vertex_buffer);
gl->BufferData (GL_ARRAY_BUFFER, 6 * 4 * 5 * sizeof (GLfloat), vertices,
GL_STATIC_DRAW);
gl->GenBuffers (1, &cube_filter->vbo_indices);
gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, cube_filter->vbo_indices);
gl->BufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof (indices), indices,
GL_STATIC_DRAW);
if (gl->GenVertexArrays) {
_bind_buffer (cube_filter);
gl->BindVertexArray (0);
}
gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
gl->BindBuffer (GL_ARRAY_BUFFER, 0);
}
if (gl->GenVertexArrays)
gl->BindVertexArray (cube_filter->vao);
_bind_buffer (cube_filter);
gl->DrawElements (GL_TRIANGLES, 36, GL_UNSIGNED_SHORT, 0);
if (gl->GenVertexArrays)
gl->BindVertexArray (0);
_unbind_buffer (cube_filter);
gl->Disable (GL_DEPTH_TEST);
xrot += 0.3f;
yrot += 0.2f;
zrot += 0.4f;
return TRUE;
}
