Point image_position(const CanvasGeo& g, const wxWindow& w){
const IntPoint viewPos = view_position(w);
const IntPoint scroll = g.pos;
const IntPoint border = point_from_size(g.border);
const coord zoom = g.zoom.GetScaleFactor();
return (viewPos + scroll - border) / zoom;
}
void raytracer_app::render(double currentTime)
{
printf("render\n");
static const GLfloat zeros[] = { 0.0f, 0.0f, 0.0f, 0.0f };
static const GLfloat gray[] = { 0.1f, 0.1f, 0.1f, 0.0f };
static const GLfloat ones[] = { 1.0f };
static double last_time = 0.0;
static double total_time = 0.0;
if (!paused)
total_time += (currentTime - last_time);
last_time = currentTime;
float f = (float)total_time;
// matricies
math::vec3 view_position(
sinf(f * 0.3234f) * 28.0f,
cosf(f * 0.4234f) * 28.0f,
cosf(f * 0.1234f) * 28.0f); // sinf(f * 0.2341f) * 20.0f - 8.0f);
math::vec3 lookat_point(sinf(f * 0.214f) * 8.0f, cosf(f * 0.153f) * 8.0f, sinf(f * 0.734f) * 8.0f);
math::mat44 view_matrix = math::lookat(view_position,
lookat_point,
math::vec3(0.0f, 1.0f, 0.0f));
glBindBufferBase(GL_UNIFORM_BUFFER, 0, uniforms_buffer);
uniforms_block * block = (uniforms_block *)glMapBufferRange(GL_UNIFORM_BUFFER,
0,
sizeof(uniforms_block),
GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT);
math::mat44 model_matrix;
model_matrix.SetScale(math::vec3(7.0f,7.0f,7.0f));
// f = 0.0f;
block->mv_matrix = view_matrix * model_matrix;
block->view_matrix = view_matrix;
block->proj_matrix.SetPerspective(50.0f,
(float)info.windowWidth / (float)info.windowHeight,
0.1f,
1000.0f);
glUnmapBuffer(GL_UNIFORM_BUFFER);
// sphere
glBindBufferBase(GL_UNIFORM_BUFFER, 1, sphere_buffer);
sphere * s = (sphere *)glMapBufferRange(GL_UNIFORM_BUFFER, 0, 128 * sizeof(sphere), GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT);
int i;
for (i = 0; i < 128; i++)
{
// float f = 0.0f;
float fi = (float)i / 128.0f;
s[i].center = math::vec3(
sinf(fi * 123.0f + f) * 15.75f,
cosf(fi * 456.0f + f) * 15.75f,
(sinf(fi * 300.0f + f) * cosf(fi * 200.0f + f)) * 20.0f);
s[i].radius = fi * 2.3f + 3.5f;
float r = fi * 61.0f;
float g = r + 0.25f;
float b = g + 0.25f;
r = (r - floorf(r)) * 0.8f + 0.2f;
g = (g - floorf(g)) * 0.8f + 0.2f;
b = (b - floorf(b)) * 0.8f + 0.2f;
s[i].color = math::vec4(r, g, b, 1.0f);
}
glUnmapBuffer(GL_UNIFORM_BUFFER);
// plane
glBindBufferBase(GL_UNIFORM_BUFFER, 2, plane_buffer);
plane * p = (plane *)glMapBufferRange(GL_UNIFORM_BUFFER, 0, 128 * sizeof(plane), GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT);
//for (i = 0; i < 1; i++)
{
p[0].normal = math::vec3(0.0f, 0.0f, -1.0f);
p[0].d = 30.0f;
p[1].normal = math::vec3(0.0f, 0.0f, 1.0f);
p[1].d = 30.0f;
p[2].normal = math::vec3(-1.0f, 0.0f, 0.0f);
p[2].d = 30.0f;
p[3].normal = math::vec3(1.0f, 0.0f, 0.0f);
p[3].d = 30.0f;
p[4].normal = math::vec3(0.0f, -1.0f, 0.0f);
p[4].d = 30.0f;
p[5].normal = math::vec3(0.0f, 1.0f, 0.0f);
p[5].d = 30.0f;
}
glUnmapBuffer(GL_UNIFORM_BUFFER);
// lights
if(pnt) printf("lights\n");
glBindBufferBase(GL_UNIFORM_BUFFER, 3, light_buffer);
light * l = (light *)glMapBufferRange(GL_UNIFORM_BUFFER, 0, 128 * sizeof(light), GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT);
f *= 1.0f;
for (i = 0; i < 128; i++)
{
float fi = 3.33f - (float)i; // / 35.0f;
l[i].position = math::vec3(sinf(fi * 2.0f - f) * 15.75f,
cosf(fi * 5.0f - f) * 5.75f,
(sinf(fi * 3.0f - f) * cosf(fi * 2.5f - f)) * 19.4f);
}
glUnmapBuffer(GL_UNIFORM_BUFFER);
// prepare
if(pnt) printf("prepare\n");
glBindVertexArray(vao);
glViewport(0, 0, info.windowWidth, info.windowHeight);
glUseProgram(prepare_program);
glUniformMatrix4fv(uniforms.ray_lookat, 1, GL_FALSE, view_matrix);
glUniform3fv(uniforms.ray_origin, 1, view_position);
glUniform1f(uniforms.aspect, (float)info.windowHeight / (float)info.windowWidth);
glBindFramebuffer(GL_FRAMEBUFFER, ray_fbo[0]);
glDrawBuffers(6, draw_buffers);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
// trace
if(pnt) printf("trace\n");
glUseProgram(trace_program);
recurse(0);
// blit
if(pnt) printf("blit\n");
glUseProgram(blit_program);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glDrawBuffer(GL_BACK);
glActiveTexture(GL_TEXTURE0);
switch (debug_mode)
{
case DEBUG_NONE:
glBindTexture(GL_TEXTURE_2D, tex_composite);
break;
case DEBUG_REFLECTED:
glBindTexture(GL_TEXTURE_2D, tex_reflected[debug_depth]);
break;
case DEBUG_REFRACTED:
glBindTexture(GL_TEXTURE_2D, tex_refracted[debug_depth]);
break;
case DEBUG_REFLECTED_COLOR:
glBindTexture(GL_TEXTURE_2D, tex_reflection_intensity[debug_depth]);
break;
case DEBUG_REFRACTED_COLOR:
glBindTexture(GL_TEXTURE_2D, tex_refraction_intensity[debug_depth]);
break;
}
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
/*
glClearBufferfv(GL_COLOR, 0, gray);
glClearBufferfv(GL_DEPTH, 0, ones);
glBindVertexArray(vao);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
*/
glutSwapBuffers();
}
