// scaling), and as fp16 has quite limited range at times, this can be relevant
// on some GPUs for larger sizes.
+#include <epoxy/gl.h>
+#include <assert.h>
#include <stdio.h>
-#include <GL/glew.h>
#include <string>
#include "effect.h"
+namespace movit {
+
class FFTPassEffect : public Effect {
public:
FFTPassEffect();
~FFTPassEffect();
- virtual std::string effect_type_id() const {
+ std::string effect_type_id() const override {
char buf[256];
if (inverse) {
snprintf(buf, sizeof(buf), "IFFTPassEffect[%d]", (1 << pass_number));
}
return buf;
}
- std::string output_fragment_shader();
+ std::string output_fragment_shader() override;
- void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num);
+ void set_gl_state(GLuint glsl_program_num, const std::string &prefix, unsigned *sampler_num) override;
// We don't actually change the output size, but this flag makes sure
// that no other effect is chained after us. This is important since
// mode to GL_NEAREST, which other effects are not ready for; so, the
// combination of these two flags guarantee that we're run entirely alone
// in our own phase, which is exactly what we want.
- virtual bool needs_texture_bounce() const { return true; }
- virtual bool changes_output_size() const { return true; }
+ bool needs_texture_bounce() const override { return true; }
+ bool changes_output_size() const override { return true; }
+ bool sets_virtual_output_size() const override { return false; }
- virtual void inform_input_size(unsigned input_num, unsigned width, unsigned height)
+ void inform_input_size(unsigned input_num, unsigned width, unsigned height) override
{
assert(input_num == 0);
input_width = width;
input_height = height;
}
- virtual void get_output_size(unsigned *width, unsigned *height,
- unsigned *virtual_width, unsigned *virtual_height) const {
+ void get_output_size(unsigned *width, unsigned *height,
+ unsigned *virtual_width, unsigned *virtual_height) const override {
*width = *virtual_width = input_width;
*height = *virtual_height = input_height;
}
+
+ void inform_added(EffectChain *chain) override { this->chain = chain; }
- enum Direction { HORIZONTAL = 0, VERTICAL = 1 };
+ enum Direction { INVALID = -1, HORIZONTAL = 0, VERTICAL = 1 };
private:
+ void generate_support_texture();
+
+ EffectChain *chain;
int input_width, input_height;
GLuint tex;
+ float uniform_num_repeats;
+ GLint uniform_support_tex;
+
int fft_size;
Direction direction;
int pass_number; // From 1..n.
int inverse; // 0 = forward (FFT), 1 = reverse (IFFT).
+
+ int last_fft_size;
+ Direction last_direction;
+ int last_pass_number;
+ int last_inverse;
+ int last_input_size;
};
+} // namespace movit
+
#endif // !defined(_MOVIT_FFT_PASS_EFFECT_H)