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Implement FBO blit texture copy

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This trick uses FBOs to allow for copying textures without the need for
special texture copy functions.
This commit is contained in:
jp9000
2014-02-09 11:37:22 -07:00
parent 9879eead83
commit 6ffcd5e74e
5 changed files with 80 additions and 14 deletions
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9
libobs-opengl/gl-helpers.h
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@@ -137,6 +137,12 @@ static inline bool gl_cull_face(GLenum faces)
return gl_success("glCullFace");
}
static inline bool gl_get_integer_v(GLenum pname, GLint *params)
{
glGetIntegerv(pname, params);
return gl_success("glGetIntegerv");
}
extern bool gl_init_face(GLenum target, GLenum type, uint32_t num_levels,
GLenum format, GLint internal_format, bool compressed,
uint32_t width, uint32_t height, uint32_t size,
@@ -145,7 +151,8 @@ extern bool gl_init_face(GLenum target, GLenum type, uint32_t num_levels,
extern bool gl_copy_texture(struct gs_device *device,
GLuint dst, GLenum dst_target,
GLuint src, GLenum src_target,
uint32_t width, uint32_t height);
uint32_t width, uint32_t height,
enum gs_color_format format);
extern bool gl_create_buffer(GLenum target, GLuint *buffer, GLsizeiptr size,
const GLvoid *data, GLenum usage);