#include <epoxy/gl.h>
#include <glib-object.h>

Functions
G_BEGIN_DECLS FlFramebuffer *	fl_framebuffer_new (GLint format, size_t width, size_t height)

GLuint	fl_framebuffer_get_id (FlFramebuffer *framebuffer)

GLuint	fl_framebuffer_get_texture_id (FlFramebuffer *framebuffer)

GLenum	fl_framebuffer_get_target (FlFramebuffer *framebuffer)

size_t	fl_framebuffer_get_width (FlFramebuffer *framebuffer)

size_t	fl_framebuffer_get_height (FlFramebuffer *framebuffer)

Function Documentation

◆ fl_framebuffer_get_height()

size_t fl_framebuffer_get_height ( FlFramebuffer * framebuffer )

fl_framebuffer_get_height: @framebuffer: an #FlFramebuffer.

Gets the height of the framebuffer in pixels.

Returns: height in pixels.

Definition at line 85 of file fl_framebuffer.cc.

                                                       {
   return self->height;
 }

Referenced by render_with_blit(), and render_with_textures().

◆ fl_framebuffer_get_id()

GLuint fl_framebuffer_get_id ( FlFramebuffer * framebuffer )

fl_framebuffer_get_id: @framebuffer: an #FlFramebuffer.

Gets the ID for this framebuffer.

Returns: OpenGL framebuffer id or 0 if creation failed.

Definition at line 69 of file fl_framebuffer.cc.

                                                   {
   return self->framebuffer_id;
 }

Referenced by fl_renderer_create_backing_store(), and render_with_blit().

◆ fl_framebuffer_get_target()

GLenum fl_framebuffer_get_target ( FlFramebuffer * framebuffer )

fl_framebuffer_get_target: @framebuffer: an #FlFramebuffer.

Gets target texture (example GL_TEXTURE_2D or GL_TEXTURE_RECTANGLE).

Returns: target texture.

Definition at line 77 of file fl_framebuffer.cc.

                                                       {
   return GL_TEXTURE_2D;
 }

◆ fl_framebuffer_get_texture_id()

GLuint fl_framebuffer_get_texture_id ( FlFramebuffer * framebuffer )

fl_framebuffer_get_texture_id: @framebuffer: an #FlFramebuffer.

Gets the ID of the texture associated with this framebuffer.

Returns: OpenGL texture id or 0 if creation failed.

Definition at line 73 of file fl_framebuffer.cc.

                                                           {
   return self->texture_id;
 }

Referenced by render_with_textures().

◆ fl_framebuffer_get_width()

size_t fl_framebuffer_get_width ( FlFramebuffer * framebuffer )

fl_framebuffer_get_width: @framebuffer: an #FlFramebuffer.

Gets the width of the framebuffer in pixels.

Returns: width in pixels.

Definition at line 81 of file fl_framebuffer.cc.

                                                      {
   return self->width;
 }

Referenced by render_with_blit(), and render_with_textures().

◆ fl_framebuffer_new()

G_BEGIN_DECLS FlFramebuffer* fl_framebuffer_new	(	GLint	format,
		size_t	width,
		size_t	height
	)

FlFramebuffer:

#FlFramebuffer creates framebuffers and their backing textures for use by the Flutter compositor. fl_framebuffer_new: @format: format, e.g. GL_RGB, GL_BGR @width: width of texture. @height: height of texture.

Creates a new frame buffer. Requires a valid OpenGL context to create.

Returns: a new #FlFramebuffer.

Definition at line 42 of file fl_framebuffer.cc.

                                                                              {
   FlFramebuffer* provider =
       FL_FRAMEBUFFER(g_object_new(fl_framebuffer_get_type(), nullptr));
  
   provider->width = width;
   provider->height = height;
  
   glGenTextures(1, &provider->texture_id);
   glGenFramebuffers(1, &provider->framebuffer_id);
  
   glBindFramebuffer(GL_FRAMEBUFFER, provider->framebuffer_id);
  
   glBindTexture(GL_TEXTURE_2D, provider->texture_id);
   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
   glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
   glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format,
                GL_UNSIGNED_BYTE, NULL);
   glBindTexture(GL_TEXTURE_2D, 0);
  
   glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
                          provider->texture_id, 0);
  
   return provider;
 }

References format, height, and width.

Referenced by fl_renderer_create_backing_store(), and TEST().