-
Notifications
You must be signed in to change notification settings - Fork 35
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
5 changed files
with
114 additions
and
8 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,81 @@ | ||
| // TODO | ||
| #define FENSTER_APP_IMPLEMENTATION | ||
| #define SCRWIDTH 800 | ||
| #define SCRHEIGHT 600 | ||
| #include "external/fenster.h" // https://github.com/zserge/fenster | ||
|
|
||
| #define TINYBVH_IMPLEMENTATION | ||
| #include "tiny_bvh.h" | ||
| #include <fstream> | ||
|
|
||
| using namespace tinybvh; | ||
|
|
||
| BVH bvh; | ||
| int frameIdx = 0, verts = 0; | ||
| bvhvec4* triangles = 0; | ||
|
|
||
| // setup view pyramid for a pinhole camera | ||
| static bvhvec3 eye( -15.24f, 21.5f, 2.54f ), p1, p2, p3; | ||
| static bvhvec3 view = normalize( bvhvec3( 0.826f, -0.438f, -0.356f ) ); | ||
|
|
||
| void Init() | ||
| { | ||
| // load raw vertex data for Crytek's Sponza | ||
| std::fstream s{ "./testdata/cryteksponza.bin", s.binary | s.in }; | ||
| s.read( (char*)&verts, 4 ); | ||
| printf( "Loading triangle data (%i tris).\n", verts ); | ||
| verts *= 3, triangles = (bvhvec4*)malloc64( verts * 16 ); | ||
| s.read( (char*)triangles, verts * 16 ); | ||
| bvh.Build( triangles, verts / 3 ); | ||
| } | ||
|
|
||
| bool UpdateCamera( float delta_time_s, fenster& f ) | ||
| { | ||
| bvhvec3 right = normalize( cross( bvhvec3( 0, 1, 0 ), view ) ), up = 0.8f * cross( view, right ); | ||
| float moved = 0, spd = 10.0f * delta_time_s; | ||
| if (f.keys['A'] || f.keys['D']) eye += right * (f.keys['D'] ? spd : -spd), moved = 1; | ||
| if (f.keys['W'] || f.keys['S']) eye += view * (f.keys['W'] ? spd : -spd), moved = 1; | ||
| if (f.keys['R'] || f.keys['F']) eye += up * 2.0f * (f.keys['R'] ? spd : -spd), moved = 1; | ||
| if (f.keys[20]) view = normalize( view + right * -0.1f * spd ), moved = 1; | ||
| if (f.keys[19]) view = normalize( view + right * 0.1f * spd ), moved = 1; | ||
| if (f.keys[17]) view = normalize( view + up * -0.1f * spd ), moved = 1; | ||
| if (f.keys[18]) view = normalize( view + up * 0.1f * spd ), moved = 1; | ||
| // recalculate right, up | ||
| right = normalize( cross( bvhvec3( 0, 1, 0 ), view ) ), up = 0.8f * cross( view, right ); | ||
| bvhvec3 C = eye + 1.2f * view; | ||
| p1 = C - right + up, p2 = C + right + up, p3 = C - right - up; | ||
| return moved > 0; | ||
| } | ||
|
|
||
| void Tick( float delta_time_s, fenster& f, uint32_t* buf ) | ||
| { | ||
| // handle user input and update camera | ||
| bool moved = UpdateCamera( delta_time_s, f ) || frameIdx++ == 0; | ||
|
|
||
| // clear the screen with a debug-friendly color | ||
| for (int i = 0; i < SCRWIDTH * SCRHEIGHT; i++) buf[i] = 0xaaaaff; | ||
|
|
||
| // trace rays | ||
| const bvhvec3 L = normalize( bvhvec3( 1, 2, 3 ) ); | ||
| for (int ty = 0; ty < SCRHEIGHT / 4; ty++) for (int tx = 0; tx < SCRWIDTH / 4; tx++) | ||
| { | ||
| for (int y = 0; y < 4; y++) for (int x = 0; x < 4; x++) | ||
| { | ||
| float u = (float)(tx * 4 + x) / SCRWIDTH, v = (float)(ty * 4 + y) / SCRHEIGHT; | ||
| bvhvec3 D = normalize( p1 + u * (p2 - p1) + v * (p3 - p1) - eye ); | ||
| Ray ray( eye, D, 1e30f ); | ||
| bvh.Intersect( ray ); | ||
| if (ray.hit.t < 10000) | ||
| { | ||
| int pixel_x = tx * 4 + x, pixel_y = ty * 4 + y, primIdx = ray.hit.prim; | ||
| bvhvec3 v0 = triangles[primIdx * 3]; | ||
| bvhvec3 v1 = triangles[primIdx * 3 + 1]; | ||
| bvhvec3 v2 = triangles[primIdx * 3 + 2]; | ||
| bvhvec3 N = normalize( cross( v1 - v0, v2 - v0 ) ); | ||
| int c = (int)(255.9f * fabs( dot( N, L ) )); | ||
| buf[pixel_x + pixel_y * SCRWIDTH] = c + (c << 8) + (c << 16); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| void Shutdown() { /* nothing here. */ } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| <?xml version="1.0" encoding="utf-8"?> | ||
| <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> | ||
| <ItemGroup> | ||
| <ClCompile Include="..\tiny_bvh_anim.cpp" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <ClInclude Include="..\tiny_bvh.h" /> | ||
| </ItemGroup> | ||
| </Project> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| <?xml version="1.0" encoding="utf-8"?> | ||
| <Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> | ||
| <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'"> | ||
| <LocalDebuggerWorkingDirectory>$(SolutionDir)</LocalDebuggerWorkingDirectory> | ||
| <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor> | ||
| </PropertyGroup> | ||
| <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'"> | ||
| <LocalDebuggerWorkingDirectory>$(SolutionDir)</LocalDebuggerWorkingDirectory> | ||
| <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor> | ||
| </PropertyGroup> | ||
| </Project> |