Beatmup::GL::AtomicCounter Class Reference

#include <program.h>

Public Member Functions
	AtomicCounter (const GraphicPipeline &gpu)
	~AtomicCounter ()
void	set (unsigned int value)

Private Attributes
handle_t	handle

Friends
class	AbstractProgram

Detailed Description

Definition at line 121 of file program.h.

Constructor & Destructor Documentation

AtomicCounter()

AtomicCounter::AtomicCounter

(

const GraphicPipeline &

gpu

)

Definition at line 191 of file program.cpp.

                                                       {
    glGenBuffers(1, &handle);
    glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, handle);
    glBufferData(GL_ATOMIC_COUNTER_BUFFER, sizeof(GLuint), nullptr, GL_STATIC_DRAW);
    GL::GLException::check("creating atomic counter");
}

~AtomicCounter()

AtomicCounter::~AtomicCounter

(

)

Definition at line 199 of file program.cpp.

                              {
    glDeleteBuffers(1, &handle);
}

Member Function Documentation

set()

void AtomicCounter::set

(

unsigned int

value

)

Definition at line 204 of file program.cpp.

                                          {
    GLuint *data;
    glBindBuffer(GL_ATOMIC_COUNTER_BUFFER, handle);
    data = (GLuint*)glMapBufferRange(GL_ATOMIC_COUNTER_BUFFER, 0, sizeof(GLuint),
        GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT | GL_MAP_UNSYNCHRONIZED_BIT);
    data[0] = value;
    glUnmapBuffer(GL_ATOMIC_COUNTER_BUFFER);
    GL::GLException::check("setting atomic counter value");
}

Friends And Related Function Documentation

AbstractProgram

friend class AbstractProgram

friend

Definition at line 122 of file program.h.

Member Data Documentation

handle

handle_t Beatmup::GL::AtomicCounter::handle

private

Definition at line 124 of file program.h.

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The documentation for this class was generated from the following files:

• core/gpu/program.h
• core/gpu/program.cpp