#include <cmath>
#include "ambientocclusion.h"
#include "blend.h"
-#include "meshbuilder.h"
+#include "shader.h"
#include "tests.h"
namespace {
-const char vertex_shader[] =
- "varying vec2 texcoord;\n"
- "void main()\n"
- "{\n"
- " gl_Position = gl_Vertex;\n"
- " texcoord = gl_Vertex.xy*0.5+0.5;\n"
- "}\n";
-
const char occlude_fs[] =
"uniform sampler2D depth;\n"
"uniform sampler2D rotate;\n"
namespace GL {
AmbientOcclusion::AmbientOcclusion(unsigned w, unsigned h, float depth_ratio):
- occlude_shader(vertex_shader, occlude_fs),
- occlude_shdata(occlude_shader),
- combine_shader(vertex_shader, combine_fs),
- combine_shdata(combine_shader),
- quad(VERTEX2)
+ quad(get_fullscreen_quad())
{
- occlusion.storage(GL::RGB, w, h);
- occlusion.set_min_filter(GL::NEAREST);
- occlusion.set_mag_filter(GL::NEAREST);
+ occlude_shader.attach_shader(get_fullscreen_vertex_shader());
+ occlude_shader.attach_shader_owned(new FragmentShader(occlude_fs));
+ occlude_shader.link();
+
+ combine_shader.attach_shader(get_fullscreen_vertex_shader());
+ combine_shader.attach_shader_owned(new FragmentShader(combine_fs));
+ combine_shader.link();
+
+ occlusion.storage(RGB, w, h);
+ occlusion.set_min_filter(NEAREST);
+ occlusion.set_mag_filter(NEAREST);
+ occlusion.set_wrap(CLAMP_TO_EDGE);
fbo.attach(COLOR_ATTACHMENT0, occlusion, 0);
+ fbo.require_complete();
combine_texturing.attach(2, occlusion);
- rotate_lookup.storage(GL::RGBA, 4, 4);
- rotate_lookup.set_min_filter(GL::NEAREST);
- rotate_lookup.set_mag_filter(GL::NEAREST);
+ rotate_lookup.storage(RGBA, 4, 4);
+ rotate_lookup.set_min_filter(NEAREST);
+ rotate_lookup.set_mag_filter(NEAREST);
unsigned char data[64];
for(unsigned i=0; i<16; ++i)
{
data[i*3+2] = static_cast<unsigned char>(127-s*127);
data[i*3+4] = static_cast<unsigned char>(127+c*127);
}
- rotate_lookup.image(0, GL::RGBA, GL::UNSIGNED_BYTE, data);
+ rotate_lookup.image(0, RGBA, UNSIGNED_BYTE, data);
occlude_texturing.attach(1, rotate_lookup);
set_depth_ratio(depth_ratio);
set_darkness(1.5);
-
- MeshBuilder bld(quad);
- bld.begin(TRIANGLE_STRIP);
- bld.vertex(-1, 1);
- bld.vertex(-1, -1);
- bld.vertex(1, 1);
- bld.vertex(1, -1);
- bld.end();
}
void AmbientOcclusion::set_depth_ratio(float depth_ratio)
Bind unbind_blend(static_cast<Blend *>(0), true);
{
- GL::Bind bind_fbo(fbo, true);
- GL::Bind bind_tex(occlude_texturing);
- GL::Bind bind_shader(occlude_shader);
+ Bind bind_fbo(fbo, true);
+ Bind bind_tex(occlude_texturing);
+ Bind bind_shader(occlude_shader);
occlude_shdata.apply();
quad.draw();
}
- GL::Bind bind_tex(combine_texturing);
- GL::Bind bind_shader(combine_shader);
+ Bind bind_tex(combine_texturing);
+ Bind bind_shader(combine_shader);
combine_shdata.apply();
quad.draw();
}