// ResourcePool explicitly if you delete a context, or they will leak (and the
// ResourcePool destructor will assert-fail). See clean_context().
-#include <GL/glew.h>
+#include <epoxy/gl.h>
#include <pthread.h>
#include <stddef.h>
#include <list>
#include <map>
#include <string>
#include <utility>
+#include <vector>
namespace movit {
// compiled program from the cache if possible. Keeps ownership of the
// program; you must call release_glsl_program() instead of deleting it
// when you no longer want it.
- GLuint compile_glsl_program(const std::string& vertex_shader, const std::string& fragment_shader);
+ //
+ // If <fragment_shader_outputs> contains more than one value, the given
+ // outputs will be bound to fragment shader output colors in the order
+ // they appear in the vector. Otherwise, output order is undefined and
+ // determined by the OpenGL driver.
+ GLuint compile_glsl_program(const std::string& vertex_shader,
+ const std::string& fragment_shader,
+ const std::vector<std::string>& frag_shader_outputs);
void release_glsl_program(GLuint glsl_program_num);
// Allocate a 2D texture of the given internal format and dimensions,
GLuint create_2d_texture(GLint internal_format, GLsizei width, GLsizei height);
void release_2d_texture(GLuint texture_num);
- // Allocate an FBO with the the given texture bound as a framebuffer attachment,
+ // Allocate an FBO with the the given texture(s) bound as framebuffer attachment(s),
// or fetch a previous used if possible. Unbinds GL_FRAMEBUFFER afterwards.
// Keeps ownership of the FBO; you must call release_fbo() of deleting
// it when you no longer want it.
// in particular on NVidia cards. Also, keep in mind that FBOs are not
// shareable across contexts, so you must have the context that's supposed
// to own the FBO current when you create or release it.
- GLuint create_fbo(GLuint texture_num);
+ GLuint create_fbo(GLuint texture0_num,
+ GLuint texture1_num = 0,
+ GLuint texture2_num = 0,
+ GLuint texture3_num = 0);
void release_fbo(GLuint fbo_num);
// Informs the ResourcePool that the current context is going away soon,
std::list<GLuint> texture_freelist;
size_t texture_freelist_bytes;
+ static const unsigned num_fbo_attachments = 4;
struct FBO {
- GLuint texture_num; // 0 means associated to a texture that has since been deleted.
+ GLuint fbo_num;
+ // GL_INVALID_INDEX means associated to a texture that has since been deleted.
+ // 0 means the output isn't bound.
+ GLuint texture_num[num_fbo_attachments];
};
// For each context, a mapping from FBO number to format details. This is
// filled if the FBO is given out to a client or on the freelist, but
// not if it is deleted from the freelist.
std::map<std::pair<void *, GLuint>, FBO> fbo_formats;
+ typedef std::map<std::pair<void *, GLuint>, FBO>::iterator FBOFormatIterator;
// For each context, a list of all FBOs that are released but not freed
// (most recently freed first). Once this reaches <fbo_freelist_max_length>,
// the last element will be deleted.
- std::map<void *, std::list<GLuint> > fbo_freelist;
+ //
+ // We store iterators directly into <fbo_format> for efficiency.
+ std::map<void *, std::list<FBOFormatIterator> > fbo_freelist;
// See the caveats at the constructor.
static size_t estimate_texture_size(const Texture2D &texture_format);