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#include <assert.h>
#include <wlr/render/gles2.h>
#include <wlr/util/log.h>
#include "include/render/fx_renderer/fx_stencilbuffer.h"
struct fx_stencilbuffer fx_stencilbuffer_create(void) {
return (struct fx_stencilbuffer) {
.rb = -1,
.width = -1,
.height = -1,
};
}
void fx_stencilbuffer_init(struct fx_stencilbuffer *stencil_buffer, int width, int height) {
bool first_alloc = false;
if (stencil_buffer->rb == (uint32_t) -1) {
glGenRenderbuffers(1, &stencil_buffer->rb);
first_alloc = true;
}
if (first_alloc || stencil_buffer->width != width || stencil_buffer->height != height) {
glBindRenderbuffer(GL_RENDERBUFFER, stencil_buffer->rb);
glRenderbufferStorage(GL_RENDERBUFFER, GL_STENCIL_INDEX8, width, height);
stencil_buffer->width = width;
stencil_buffer->height = height;
GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
wlr_log(WLR_ERROR,
"Stencil buffer incomplete, couldn't create! (FB status: %i)",
status);
return;
}
}
// Reattach the RenderBuffer to the FrameBuffer
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT,
GL_RENDERBUFFER, stencil_buffer->rb);
}
void fx_stencilbuffer_release(struct fx_stencilbuffer *stencil_buffer) {
if (stencil_buffer->rb != (uint32_t) -1 && stencil_buffer->rb) {
glDeleteRenderbuffers(1, &stencil_buffer->rb);
}
stencil_buffer->rb = -1;
stencil_buffer->width = -1;
stencil_buffer->height = -1;
}
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