CODEWITHSUNDEEP
opengl-estexturesdmafbo
balamenggan
balamenggan

Reputation: 41

Can I create a texture attachment with a pointer of dma_buf?

In OpenGL ES，we can Create a texture for a framebuffer like this:

unsigned int texture;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
  
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 800, 600, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

Then we can attach it to the framebuffer:

glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);

My question is: Can I create a texture for a framebuffer with pointer of dma_buf? Like this:

shm_handle_t handle = dma_buf_malloc(size);
void* vaddr = dma_get_address(handle);

unsigned int texture;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);

// vaddr instead of NULL
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 800, 600, 0, GL_RGB, GL_UNSIGNED_BYTE, vaddr);

glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);

Upvotes: 0

Views: 212

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