ParticleObject::ParticleObject(GraphicContext &gc, Scene &scene_owner, SceneObject *parent_object) : SceneObject(scene_owner, parent_object)
{
std::vector<Vec3f> object_positions;
std::vector<Vec4f> object_colours;
object_positions.resize(num_points);
object_colours.resize(num_points);
const float scale_x = 0.0015f;
const float scale_y = 0.0015f;
const float scale_z = 0.0015f;
for (int cnt=0; cnt < num_points; cnt++)
{
object_positions[cnt] = Vec3f(
((rand() & 0xFFFFF) - (0xFFFFF/128.0f)) * scale_x,
((rand() & 0xFFFFF) - (0xFFFFF/128.0f)) * scale_y,
((rand() & 0xFFFFF) - (0xFFFFF/128.0f)) * scale_z );
Vec3f pos = object_positions[cnt];
pos = pos * pos;
pos.normalize();
object_colours[cnt] = Vec4f(
pos.x, pos.y, pos.z, 1.0f);
}
object_positions_vbo = VertexArrayBuffer(gc, &object_positions[0], sizeof(Vec3f) * object_positions.size());
object_colours_vbo = VertexArrayBuffer(gc, &object_colours[0], sizeof(Vec4f) * object_colours.size());
}
RenderBatchBuffer::RenderBatchBuffer(GraphicContext &gc) : current_vertex_buffer(0)
{
for (int index=0; index < num_vertex_buffers; index++)
{
vertex_buffers[index] = VertexArrayBuffer(gc, vertex_buffer_size, usage_stream_draw);
}
}
RenderBatchBuffer::RenderBatchBuffer(GraphicContext &gc)
{
for (auto & elem : vertex_buffers)
{
elem = VertexArrayBuffer(gc, vertex_buffer_size, usage_stream_draw);
}
}
GameTerrain::GameTerrain(
GraphicContext &gc,
const std::string &heightmap_png,
const std::string &texture_png,
const std::string &areas_png,
const std::string &borders_png,
int area_count,
float vertical_scale)
: num_vertices(0)
{
color_areas = PNGProvider::load(areas_png).to_format(tf_r8);
PixelBuffer pb = PNGProvider::load(heightmap_png).to_format(tf_rgba8);
int width = pb.get_width()-1;
int height = pb.get_height()-1;
num_vertices = width*height*3*4 /*+ width*6*2 + height*6*2 + 6*/;
vertex_buffer = VertexArrayBuffer(gc, num_vertices*sizeof(Vertex));
vertex_buffer.lock(cl_access_write_only);
Vertex *vertex_data = reinterpret_cast<Vertex *>(vertex_buffer.get_data());
int pitch = pb.get_pitch();
unsigned char *data = reinterpret_cast<unsigned char *>(pb.get_data());
for (int y = 0; y < height; y++)
{
unsigned int *line1 = reinterpret_cast<unsigned int *>(data + y*pitch);
unsigned int *line2 = reinterpret_cast<unsigned int *>(data + (y+1)*pitch);
Vertex *vertex_line = vertex_data + 3*4*width*y;
for (int x = 0; x < width; x++)
{
float height1 = (line1[x] >> 24) * vertical_scale;
float height2 = (line1[x+1] >> 24) * vertical_scale;
float height3 = (line2[x] >> 24) * vertical_scale;
float height4 = (line2[x+1] >> 24) * vertical_scale;
float height5 = (height1 + height2 + height3 + height4) / 4.0f;
Vertex *vertex_quad = vertex_line + x*3*4;
Vec3f positions[12] =
{
Vec3f(x+0.0f, height1, y+0.0f),
Vec3f(x+1.0f, height2, y+0.0f),
Vec3f(x+0.5f, height5, y+0.5f),
Vec3f(x+1.0f, height2, y+0.0f),
Vec3f(x+1.0f, height4, y+1.0f),
Vec3f(x+0.5f, height5, y+0.5f),
Vec3f(x+1.0f, height4, y+1.0f),
Vec3f(x+0.0f, height3, y+1.0f),
Vec3f(x+0.5f, height5, y+0.5f),
Vec3f(x+0.0f, height3, y+1.0f),
Vec3f(x+0.0f, height1, y+0.0f),
Vec3f(x+0.5f, height5, y+0.5f)
};
for (int i = 0; i < 12; i++)
vertex_quad[i].position = positions[i];
Vec3f normal1 = calc_normal(x, y, data, width, height, pitch);
Vec3f normal2 = calc_normal(x+1, y, data, width, height, pitch);
Vec3f normal3 = calc_normal(x, y+1, data, width, height, pitch);
Vec3f normal4 = calc_normal(x+1, y+1, data, width, height, pitch);
Vec3f normal5 = (normal1+normal2+normal3+normal4)/4.0f;
vertex_quad[0].normal = normal1;
vertex_quad[1].normal = normal2;
vertex_quad[2].normal = normal5;
vertex_quad[3].normal = normal2;
vertex_quad[4].normal = normal4;
vertex_quad[5].normal = normal5;
vertex_quad[6].normal = normal4;
vertex_quad[7].normal = normal3;
vertex_quad[8].normal = normal5;
vertex_quad[9].normal = normal3;
vertex_quad[10].normal = normal1;
vertex_quad[11].normal = normal5;
}
}
vertex_data += width*height*3*4;
/*
for (int y = 0; y < height; y++)
{
unsigned int *line1 = reinterpret_cast<unsigned int *>(data + y*pitch);
unsigned int *line2 = reinterpret_cast<unsigned int *>(data + (y+1)*pitch);
float scale = 0.4f;
float height1 = (line1[0] >> 24)*scale;
float height2 = (line2[0] >> 24)*scale;
float height3 = (line1[width] >> 24)*scale;
float height4 = (line2[width] >> 24)*scale;
vertex_data[y*6*2+0].position = Vec3f(0, -0.1f, (float)y);
vertex_data[y*6*2+1].position = Vec3f(0, (float)height1, (float)y);
vertex_data[y*6*2+2].position = Vec3f(0, (float)height2, (float)y+1);
vertex_data[y*6*2+3].position = Vec3f(0, (float)height2, (float)y+1);
vertex_data[y*6*2+4].position = Vec3f(0, -0.1f, (float)y+1);
vertex_data[y*6*2+5].position = Vec3f(0, -0.1f, (float)y);
vertex_data[y*6*2+11].position = Vec3f((float)width+1, -0.1f, (float)y);
vertex_data[y*6*2+10].position = Vec3f((float)width+1, (float)height3, (float)y);
vertex_data[y*6*2+9].position = Vec3f((float)width+1, (float)height4, (float)y+1);
vertex_data[y*6*2+8].position = Vec3f((float)width+1, (float)height4, (float)y+1);
vertex_data[y*6*2+7].position = Vec3f((float)width+1, -0.1f, (float)y+1);
vertex_data[y*6*2+6].position = Vec3f((float)width+1, -0.1f, (float)y);
for (int i = 0; i < 6; i++)
vertex_data[y*6*2+i].normal = Vec3f(-1, 0, 0);
for (int i = 0; i < 6; i++)
vertex_data[y*6*2+6+i].normal = Vec3f(1, 0, 0);
}
vertex_data += height*6*2;
unsigned int *line1 = reinterpret_cast<unsigned int *>(data);
unsigned int *line2 = reinterpret_cast<unsigned int *>(data + height*pitch);
for (int x = 0; x < width; x++)
{
float scale = 0.4f;
float height1 = (line1[x] >> 24)*scale;
float height2 = (line1[x+1] >> 24)*scale;
float height3 = (line2[x] >> 24)*scale;
float height4 = (line2[x+1] >> 24)*scale;
vertex_data[x*6*2+5].position = Vec3f((float)x, -0.1f, 0);
vertex_data[x*6*2+4].position = Vec3f((float)x, (float)height1, 0);
vertex_data[x*6*2+3].position = Vec3f((float)x+1, (float)height2, 0);
vertex_data[x*6*2+2].position = Vec3f((float)x+1, (float)height2, 0);
vertex_data[x*6*2+1].position = Vec3f((float)x+1, -0.1f, 0);
vertex_data[x*6*2+0].position = Vec3f((float)x, -0.1f, 0);
vertex_data[x*6*2+6].position = Vec3f((float)x, -0.1f, (float)height+1);
vertex_data[x*6*2+7].position = Vec3f((float)x, (float)height3, (float)height+1);
vertex_data[x*6*2+8].position = Vec3f((float)x+1, (float)height4, (float)height+1);
vertex_data[x*6*2+9].position = Vec3f((float)x+1, (float)height4, (float)height+1);
vertex_data[x*6*2+10].position = Vec3f((float)x+1, -0.1f, (float)height+1);
vertex_data[x*6*2+11].position = Vec3f((float)x, -0.1f, (float)height+1);
for (int i = 0; i < 6; i++)
vertex_data[x*6*2+i].normal = Vec3f(0, 0, -1);
for (int i = 0; i < 6; i++)
vertex_data[x*6*2+6+i].normal = Vec3f(0, 0, 1);
}
vertex_data += width*6*2;
vertex_data[0].position = Vec3f(0, -0.1f, 0);
vertex_data[1].position = Vec3f((float)width, -0.1f, 0);
vertex_data[2].position = Vec3f((float)width, -0.1f, (float)height);
vertex_data[3].position = Vec3f((float)width, -0.1f, (float)height);
vertex_data[4].position = Vec3f(0, -0.1f, (float)height);
vertex_data[5].position = Vec3f(0, -0.1f, 0);
for (int i = 0; i < 6; i++)
vertex_data[i].normal = Vec3f(0, -1, 0);
*/
vertex_buffer.unlock();
size = Size(width+1, height+1);
this->area_count = area_count;
VirtualDirectory vdir;
shader_program = ProgramObject::load(gc, "Resources/map_vertex.glsl", "Resources/map_fragment.glsl", vdir);
shader_program.bind_attribute_location(0, "in_position");
shader_program.bind_attribute_location(1, "in_normal");
if (!shader_program.link())
throw Exception("Map shader program failed to link: " + shader_program.get_info_log());
texture_base = Texture2D(gc, texture_png);
texture_base.set_min_filter(filter_linear);
texture_base.set_mag_filter(filter_linear);
// Change the values between area colors to avoid GPUs merging them together
PixelBuffer image = ImageProviderFactory::load(areas_png).to_format(tf_rgba8);
unsigned int* image_data = reinterpret_cast<unsigned int*>(image.get_data());
int image_total_pixels = image.get_width()*image.get_height();
for (int i = 0; i < image_total_pixels; i++)
{
unsigned int area_color = (image_data[i]>>24)*255/area_count;
image_data[i] = (area_color<<24)+(area_color<<16)+(area_color<<8)+area_color;
}
texture_areas = Texture2D(gc, image.get_size());
texture_areas.set_image(image);
texture_areas.set_min_filter(filter_nearest);
texture_areas.set_mag_filter(filter_nearest);
texture_borders = Texture2D(gc, borders_png);
texture_borders.set_min_filter(filter_linear);
texture_borders.set_mag_filter(filter_linear);
}
