Obj parser, plane is loading correctly with texcoords etc! now OS defines the bitmap layout and format
This commit is contained in:
Krzosa Karol
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assets/cube.obj
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48
assets/cube.obj
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# cube.obj
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#
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mtllib cube.mtl
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o cube
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v -1.000000 -1.000000 1.000000
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v 1.000000 -1.000000 1.000000
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v 1.000000 1.000000 1.000000
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v -1.000000 -1.000000 -1.000000
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vt 1.000000 0.000000
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vt 0.000000 0.000000
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vt 1.000000 1.000000
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vn 0.000000 0.000000 1.000000
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vn 1.000000 0.000000 0.000000
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vn -1.000000 0.000000 0.000000
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g cube
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usemtl cube
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s 1
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f 1/1/1 2/2/1 3/3/1
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f 3/3/1 2/2/1 4/4/1
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s 2
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f 3/1/2 4/2/2 5/3/2
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f 5/3/2 4/2/2 6/4/2
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s 3
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f 5/4/3 6/3/3 7/2/3
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f 7/2/3 6/3/3 8/1/3
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s 4
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f 7/1/4 8/2/4 1/3/4
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f 1/3/4 8/2/4 2/4/4
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s 5
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f 2/1/5 8/2/5 4/3/5
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f 4/3/5 8/2/5 6/4/5
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s 6
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f 7/1/6 1/2/6 5/3/6
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f 5/3/6 1/2/6 3/4/6
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BIN
assets/cube.png
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BIN
assets/cube.png
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Binary file not shown.
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After Width: | Height: | Size: 545 B |
707
assets/f22.obj
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assets/f22.obj
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# Blender v2.79 (sub 0) OBJ File: 'fighters_0.blend'
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# www.blender.org
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mtllib f-22.mtl
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o F-22
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|
||||||
97
main.cpp
97
main.cpp
@@ -14,6 +14,7 @@ OK Fix the gaps between triangles (it also improved look of triangle edges)
|
|||||||
* Depth buffer
|
* Depth buffer
|
||||||
* FPS Camera
|
* FPS Camera
|
||||||
* Reading OBJ files
|
* Reading OBJ files
|
||||||
|
* Loading a model from PMX?
|
||||||
* Rendering multiple objects, queue renderer
|
* Rendering multiple objects, queue renderer
|
||||||
* Clipping
|
* Clipping
|
||||||
* Optimizations
|
* Optimizations
|
||||||
@@ -22,14 +23,24 @@ OK Fix the gaps between triangles (it also improved look of triangle edges)
|
|||||||
*
|
*
|
||||||
*/
|
*/
|
||||||
|
|
||||||
|
/* What a codebase needs:
|
||||||
|
* Macros for debug, release, slow, fast builds, where debug - tooling, slow - enable asserts
|
||||||
|
* Macros for OS, Compiler, Architecture
|
||||||
|
* Nice way of outputing visible error messages
|
||||||
|
* FatalError and Assert function for release builds with an error message, Debug Assert with error message for slow builds
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
#define OS_WINDOWS 1
|
||||||
#define BILINEAR_BLEND 1
|
#define BILINEAR_BLEND 1
|
||||||
#define PERSPECTIVE_CORRECT_INTERPOLATION 1
|
#define PERSPECTIVE_CORRECT_INTERPOLATION 1
|
||||||
#define DRAW_WIREFRAME 1
|
#define DRAW_WIREFRAME 1
|
||||||
|
#define DRAW_RECTS 0
|
||||||
|
|
||||||
#include "main.h"
|
#include "main.h"
|
||||||
#include "platform.h"
|
#include "platform.h"
|
||||||
#include "math.h"
|
#include "math.h"
|
||||||
#include "stb_image.h"
|
#include "stb_image.h"
|
||||||
|
#include "objparser.h"
|
||||||
|
|
||||||
struct Face {
|
struct Face {
|
||||||
int p[3];
|
int p[3];
|
||||||
@@ -71,15 +82,15 @@ void DrawRect(Image* dst, float X, float Y, float w, float h, U32 color) {
|
|||||||
|
|
||||||
for (int y = min_y; y < max_y; y++) {
|
for (int y = min_y; y < max_y; y++) {
|
||||||
for (int x = min_x; x < max_x; x++) {
|
for (int x = min_x; x < max_x; x++) {
|
||||||
dst->pixels[x + (dst->y - 1 - y) * dst->x] = color;
|
dst->pixels[x + y * dst->x] = color;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
FUNCTION
|
FUNCTION
|
||||||
void DrawBitmap(Image* dst, Image* src, Vec2 pos) {
|
void DrawBitmap(Image* dst, Image* src, Vec2 pos) {
|
||||||
I64 minx = (I64)(pos.x + 0.5f);
|
I64 minx = (I64)(pos.x + 0.5);
|
||||||
I64 miny = (I64)(pos.y + 0.5f);
|
I64 miny = (I64)(pos.y + 0.5);
|
||||||
I64 maxx = minx + src->x;
|
I64 maxx = minx + src->x;
|
||||||
I64 maxy = miny + src->y;
|
I64 maxy = miny + src->y;
|
||||||
I64 offsetx = 0;
|
I64 offsetx = 0;
|
||||||
@@ -105,7 +116,7 @@ void DrawBitmap(Image* dst, Image* src, Vec2 pos) {
|
|||||||
for (I64 x = minx; x < maxx; x++) {
|
for (I64 x = minx; x < maxx; x++) {
|
||||||
I64 tx = x - minx + offsetx;
|
I64 tx = x - minx + offsetx;
|
||||||
I64 ty = y - miny + offsety;
|
I64 ty = y - miny + offsety;
|
||||||
dst->pixels[x + (dst->y - 1 - y) * dst->x] = src->pixels[tx + (src->y - 1 - ty) * src->x];
|
dst->pixels[x + y * dst->x] = src->pixels[tx + ty * src->x];
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
@@ -127,8 +138,6 @@ void DrawTriangle(Image* dst, Image *src, Vec4 p0, Vec4 p1, Vec4 p2,
|
|||||||
I64 min_y = (I64)MAX(0, Floor(min_y1));
|
I64 min_y = (I64)MAX(0, Floor(min_y1));
|
||||||
I64 max_x = (I64)MIN(dst->x, Ceil(max_x1));
|
I64 max_x = (I64)MIN(dst->x, Ceil(max_x1));
|
||||||
I64 max_y = (I64)MIN(dst->y, Ceil(max_y1));
|
I64 max_y = (I64)MIN(dst->y, Ceil(max_y1));
|
||||||
//@Todo: Fix the proper rounding
|
|
||||||
//@Todo: Determine whether we need subprecision etc
|
|
||||||
|
|
||||||
float area = EdgeFunction(p0, p1, p2);
|
float area = EdgeFunction(p0, p1, p2);
|
||||||
for (I64 y = min_y; y < max_y; y++) {
|
for (I64 y = min_y; y < max_y; y++) {
|
||||||
@@ -158,6 +167,7 @@ void DrawTriangle(Image* dst, Image *src, Vec4 p0, Vec4 p1, Vec4 p2,
|
|||||||
I64 vi = (I64)(v);
|
I64 vi = (I64)(v);
|
||||||
float udiff = u - (float)ui;
|
float udiff = u - (float)ui;
|
||||||
float vdiff = v - (float)vi;
|
float vdiff = v - (float)vi;
|
||||||
|
// Origin UV (0,0) is in bottom left
|
||||||
U32 *pixel = src->pixels + (ui + (src->y - 1ll - vi) * src->x);
|
U32 *pixel = src->pixels + (ui + (src->y - 1ll - vi) * src->x);
|
||||||
#if BILINEAR_BLEND
|
#if BILINEAR_BLEND
|
||||||
Vec4 pixelx1y1 = V4ABGR(*pixel);
|
Vec4 pixelx1y1 = V4ABGR(*pixel);
|
||||||
@@ -173,13 +183,15 @@ void DrawTriangle(Image* dst, Image *src, Vec4 p0, Vec4 p1, Vec4 p2,
|
|||||||
U32 color32 = *pixel;
|
U32 color32 = *pixel;
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
dst->pixels[x + (dst->y - 1 - y) * dst->x] = color32;
|
dst->pixels[x + y * dst->x] = color32;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
#if DRAW_RECTS
|
||||||
DrawRect(dst, p0.x-4, p0.y-4, 8,8, 0x00ff0000);
|
DrawRect(dst, p0.x-4, p0.y-4, 8,8, 0x00ff0000);
|
||||||
DrawRect(dst, p1.x-4, p1.y-4, 8,8, 0x0000ff00);
|
DrawRect(dst, p1.x-4, p1.y-4, 8,8, 0x0000ff00);
|
||||||
DrawRect(dst, p2.x-4, p2.y-4, 8,8, 0x000000ff);
|
DrawRect(dst, p2.x-4, p2.y-4, 8,8, 0x000000ff);
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
FUNCTION
|
FUNCTION
|
||||||
@@ -194,20 +206,50 @@ void DrawLine(Image *dst, float x0, float y0, float x1, float y1) {
|
|||||||
for (int i = 0; i <= longest_side_length; i++) {
|
for (int i = 0; i <= longest_side_length; i++) {
|
||||||
int x = (int)(current_x + 0.5f);
|
int x = (int)(current_x + 0.5f);
|
||||||
int y = (int)(current_y + 0.5f);
|
int y = (int)(current_y + 0.5f);
|
||||||
dst->pixels[x + (dst->y - 1 - y) * dst->x] = 0xffffffff;
|
dst->pixels[x + y * dst->x] = 0xffffffff;
|
||||||
current_x += x_inc;
|
current_x += x_inc;
|
||||||
current_y += y_inc;
|
current_y += y_inc;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
struct FaceA {
|
||||||
|
int vertex[3];
|
||||||
|
int tex[3];
|
||||||
|
int normal[3];
|
||||||
|
};
|
||||||
|
|
||||||
|
FUNCTION
|
||||||
|
Obj LoadObj(const char* file) {
|
||||||
|
char* data = OS_ReadFile(file);
|
||||||
|
char* memory = (char*)malloc(100000);
|
||||||
|
Obj result = Obj_Parse(memory, 100000, data);
|
||||||
|
free(data);
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
FUNCTION
|
||||||
|
Image LoadImage(const char* path) {
|
||||||
|
int x, y, n;
|
||||||
|
unsigned char* data = stbi_load(path, &x, &y, &n, 4);
|
||||||
|
Image result = { (U32*)data, x, y };
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
int main() {
|
int main() {
|
||||||
|
Obj_Test();
|
||||||
OS_Init({ 1280,720 });
|
OS_Init({ 1280,720 });
|
||||||
float rotation = 0;
|
float rotation = 0;
|
||||||
Vec3 camera_pos = {0,0,-5};
|
Vec3 camera_pos = {0,0,-5};
|
||||||
int x,y,n;
|
|
||||||
unsigned char *data = stbi_load("assets/bricksx64.png", &x, &y, &n, 4);
|
Obj obj = LoadObj("assets/f22.obj");
|
||||||
Image img = {(U32 *)data, x, y};
|
Vec3* vertices = (Vec3 *)obj.vertices;
|
||||||
Image screen320 = {(U32 *)malloc(320*180*sizeof(U32)), 140, 140};
|
Vec2* tex_coords = (Vec2*)obj.texture;
|
||||||
|
FaceA* faces = (FaceA*)obj.indices;
|
||||||
|
I64 face_count = obj.indices_count;
|
||||||
|
|
||||||
|
|
||||||
|
Image img = LoadImage("assets/bricksx64.png");
|
||||||
|
Image screen320 = {(U32 *)malloc(320*180*sizeof(U32)), 320, 180};
|
||||||
while (OS_GameLoop()) {
|
while (OS_GameLoop()) {
|
||||||
Mat4 perspective = Mat4Perspective(60.f, (float)screen.x, (float)screen.y, 0.1f, 100.f);
|
Mat4 perspective = Mat4Perspective(60.f, (float)screen.x, (float)screen.y, 0.1f, 100.f);
|
||||||
for (int y = 0; y < screen320.y; y++) {
|
for (int y = 0; y < screen320.y; y++) {
|
||||||
@@ -215,21 +257,22 @@ int main() {
|
|||||||
screen320.pixels[x + y * screen320.x] = 0;
|
screen320.pixels[x + y * screen320.x] = 0;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
#if 0
|
DrawBitmap(&screen320, &img, {0,0});
|
||||||
DrawTriangle(&screen320, &img, { 100,100 }, { 100,400 }, { 400,400 }, { 0,0 }, { 0,1 }, { 1,1 });
|
|
||||||
DrawTriangle(&screen320, &img, { 100,100 }, { 400,400 }, { 400,100}, { 0,0 }, { 1,1 }, { 1,0 });
|
|
||||||
#else
|
|
||||||
//DrawBitmap(&screen320, &img, {0,0});
|
|
||||||
Mat4 transform = Mat4RotationZ(rotation);
|
Mat4 transform = Mat4RotationZ(rotation);
|
||||||
transform = transform * Mat4RotationX(rotation);
|
transform = transform * Mat4RotationX(rotation);
|
||||||
if (keydown_a) rotation += 0.05f;
|
if (keydown_a) rotation += 0.05f;
|
||||||
if (keydown_b) rotation -= 0.05f;
|
if (keydown_b) rotation -= 0.05f;
|
||||||
for (int i = 0; i < ARRAY_CAP(cube_faces); i++) {
|
for (int i = 0; i < face_count; i++) {
|
||||||
Face* face = cube_faces + i;
|
FaceA* face = faces + i;
|
||||||
Vec4 pos[3] = {
|
Vec4 pos[3] = {
|
||||||
vec4(cube_vertices[face->p[0] - 1], 1),
|
vec4(vertices[face->vertex[0] - 1], 1),
|
||||||
vec4(cube_vertices[face->p[1] - 1], 1),
|
vec4(vertices[face->vertex[1] - 1], 1),
|
||||||
vec4(cube_vertices[face->p[2] - 1], 1),
|
vec4(vertices[face->vertex[2] - 1], 1),
|
||||||
|
};
|
||||||
|
Vec2 tex[3] = {
|
||||||
|
tex_coords[face->tex[0] - 1],
|
||||||
|
tex_coords[face->tex[1] - 1],
|
||||||
|
tex_coords[face->tex[2] - 1],
|
||||||
};
|
};
|
||||||
|
|
||||||
//@Note: Transform
|
//@Note: Transform
|
||||||
@@ -256,7 +299,8 @@ int main() {
|
|||||||
pos[j].x += screen320.x / 2;
|
pos[j].x += screen320.x / 2;
|
||||||
pos[j].y += screen320.y / 2;
|
pos[j].y += screen320.y / 2;
|
||||||
}
|
}
|
||||||
DrawTriangle(&screen320, &img, pos[0], pos[1], pos[2], face->tex[0], face->tex[1], face->tex[2]);
|
|
||||||
|
DrawTriangle(&screen320, &img, pos[0], pos[1], pos[2], tex[0], tex[1], tex[2]);
|
||||||
#if DRAW_WIREFRAME
|
#if DRAW_WIREFRAME
|
||||||
DrawLine(&screen320, pos[0].x, pos[0].y, pos[1].x, pos[1].y);
|
DrawLine(&screen320, pos[0].x, pos[0].y, pos[1].x, pos[1].y);
|
||||||
DrawLine(&screen320, pos[1].x, pos[1].y, pos[2].x, pos[2].y);
|
DrawLine(&screen320, pos[1].x, pos[1].y, pos[2].x, pos[2].y);
|
||||||
@@ -265,6 +309,7 @@ int main() {
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// @Note: Draw 320screen to OS screen
|
||||||
U32* ptr = screen.pixels;
|
U32* ptr = screen.pixels;
|
||||||
for (int y = 0; y < screen.y; y++) {
|
for (int y = 0; y < screen.y; y++) {
|
||||||
for (int x = 0; x < screen.x; x++) {
|
for (int x = 0; x < screen.x; x++) {
|
||||||
@@ -272,12 +317,8 @@ int main() {
|
|||||||
float v = (float)y / (float)screen.y;
|
float v = (float)y / (float)screen.y;
|
||||||
int tx = (int)(u * screen320.x + 0.5f);
|
int tx = (int)(u * screen320.x + 0.5f);
|
||||||
int ty = (int)(v * screen320.y + 0.5f);
|
int ty = (int)(v * screen320.y + 0.5f);
|
||||||
U32 pixel = screen320.pixels[tx + ty * (screen320.x)];
|
*ptr++ = screen320.pixels[tx + ty * (screen320.x)];
|
||||||
// 0xABGR to 0xARGB
|
|
||||||
// b > 24 g > 8 r < 8
|
|
||||||
*ptr++ = ((pixel & 0xff000000)) | ((pixel & 0x00ff0000) >> 16) | ((pixel & 0x0000ff00)) | ((pixel & 0x000000ff) << 16);
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
#endif
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|||||||
240
objparser.cpp
Normal file
240
objparser.cpp
Normal file
@@ -0,0 +1,240 @@
|
|||||||
|
#include "objparser.h"
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <assert.h>
|
||||||
|
|
||||||
|
enum class TokenType {
|
||||||
|
none, word, number, whitespace, end
|
||||||
|
};
|
||||||
|
|
||||||
|
struct Token {
|
||||||
|
TokenType type;
|
||||||
|
union {
|
||||||
|
struct {
|
||||||
|
char* s;
|
||||||
|
int len;
|
||||||
|
};
|
||||||
|
double number;
|
||||||
|
};
|
||||||
|
};
|
||||||
|
|
||||||
|
static
|
||||||
|
bool Obj_IsAlphabetic(char w) {
|
||||||
|
bool result = (w >= 'a' && w <= 'z') || (w >= 'A' && w <= 'Z');
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
bool Obj_IsNumber(char w) {
|
||||||
|
bool result = w >= '0' && w <= '9';
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
bool Obj_IsWhitespace(char w) {
|
||||||
|
bool result = w == '\n' || w == ' ' || w == '\t' || w == '\v' || w == '\r';
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
int Obj_StringLen(char* a) {
|
||||||
|
int result = 0;
|
||||||
|
while (*a++ != 0) result++;
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
bool Obj_Equals(Token a, const char* b) {
|
||||||
|
int len = Obj_StringLen((char*)b);
|
||||||
|
if (a.type != TokenType::word) return false;
|
||||||
|
if (a.len != len) return false;
|
||||||
|
for (int i = 0; i < len; i++) {
|
||||||
|
if (a.s[i] != b[i]) return false;
|
||||||
|
}
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
Token Obj_NextTokenRaw(char** data) {
|
||||||
|
Token result = {};
|
||||||
|
result.s = *data;
|
||||||
|
*data += 1;
|
||||||
|
|
||||||
|
if (Obj_IsAlphabetic(*result.s)) {
|
||||||
|
result.type = TokenType::word;
|
||||||
|
while (!Obj_IsWhitespace(**data)) {
|
||||||
|
*data+=1;
|
||||||
|
}
|
||||||
|
result.len = (int)(*data - result.s);
|
||||||
|
}
|
||||||
|
else if (Obj_IsNumber(*result.s) || *result.s == '-') {
|
||||||
|
result.type = TokenType::number;
|
||||||
|
while (Obj_IsNumber(**data) || **data == '.') {
|
||||||
|
*data += 1;
|
||||||
|
}
|
||||||
|
result.number = atof(result.s);
|
||||||
|
}
|
||||||
|
else if (*result.s == '#') {
|
||||||
|
while (**data != '\n') *data += 1;
|
||||||
|
result = Obj_NextTokenRaw(data);
|
||||||
|
}
|
||||||
|
else if (Obj_IsWhitespace(*result.s)) {
|
||||||
|
result.type = TokenType::whitespace;
|
||||||
|
while (Obj_IsWhitespace(**data)) *data += 1;
|
||||||
|
result.len = (int)(*data - result.s);
|
||||||
|
}
|
||||||
|
else if (*result.s == 0) {
|
||||||
|
result.type = TokenType::end;
|
||||||
|
}
|
||||||
|
else if(*result.s >= '!') {
|
||||||
|
result.type = (TokenType)*result.s;
|
||||||
|
}
|
||||||
|
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
Token Obj_NextToken(char** data) {
|
||||||
|
Token result;
|
||||||
|
do {
|
||||||
|
result = Obj_NextTokenRaw(data);
|
||||||
|
} while (result.type == TokenType::whitespace);
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
double Obj_ExpectNumber(char** data) {
|
||||||
|
Token t = Obj_NextToken(data);
|
||||||
|
assert(t.type == TokenType::number); // @Todo: Error handling, error flag
|
||||||
|
return t.number;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
void Obj_ExpectToken(char** data, char token) {
|
||||||
|
Token t = Obj_NextToken(data);
|
||||||
|
assert(t.type == (TokenType)token); // @Todo: Error handling, error flag
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
void Obj_Debug_ExpectRaw(char** data, TokenType type) {
|
||||||
|
char* data_temp = *data;
|
||||||
|
assert(Obj_NextTokenRaw(&data_temp).type == type);
|
||||||
|
}
|
||||||
|
|
||||||
|
struct Obj_Arena {
|
||||||
|
char* base;
|
||||||
|
size_t size;
|
||||||
|
size_t p;
|
||||||
|
};
|
||||||
|
|
||||||
|
static
|
||||||
|
char* Obj_Push(Obj_Arena *a, size_t size) {
|
||||||
|
char* ptr = a->base;
|
||||||
|
if (a->p + size < a->size) {
|
||||||
|
ptr += a->p;
|
||||||
|
a->p += size;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
assert(!"Buffer is too small to hold the data!");
|
||||||
|
}
|
||||||
|
return ptr;
|
||||||
|
}
|
||||||
|
|
||||||
|
Obj Obj_Parse(char* memory, size_t memory_size, char* data) {
|
||||||
|
Obj_Arena arena = { memory, memory_size };
|
||||||
|
Obj result = {};
|
||||||
|
int parsing_vertices = 0;
|
||||||
|
int parsing_normals = 0;
|
||||||
|
int parsing_textures = 0;
|
||||||
|
|
||||||
|
for (;;) {
|
||||||
|
Token token = Obj_NextToken(&data);
|
||||||
|
if (token.type == TokenType::end) break;
|
||||||
|
else if (token.type == TokenType::word) {
|
||||||
|
if (Obj_Equals(token, "v")) {
|
||||||
|
assert(parsing_vertices != 2);
|
||||||
|
parsing_vertices = 1;
|
||||||
|
float* ptr = (float*)Obj_Push(&arena, sizeof(float) * 3);
|
||||||
|
ptr[0] = (float)Obj_ExpectNumber(&data);
|
||||||
|
ptr[1] = (float)Obj_ExpectNumber(&data);
|
||||||
|
ptr[2] = (float)Obj_ExpectNumber(&data);
|
||||||
|
if (result.vertices == 0) result.vertices = ptr;
|
||||||
|
result.vertices_count++;
|
||||||
|
Obj_Debug_ExpectRaw(&data, TokenType::whitespace);
|
||||||
|
}
|
||||||
|
else if (Obj_Equals(token, "vt")) {
|
||||||
|
assert(parsing_textures != 2);
|
||||||
|
parsing_textures = 1;
|
||||||
|
parsing_vertices = 2;
|
||||||
|
|
||||||
|
float* ptr = (float*)Obj_Push(&arena, sizeof(float) * 2);
|
||||||
|
ptr[0] = (float)Obj_ExpectNumber(&data);
|
||||||
|
ptr[1] = (float)Obj_ExpectNumber(&data);
|
||||||
|
if (result.texture == 0) result.texture = ptr;
|
||||||
|
Obj_Debug_ExpectRaw(&data, TokenType::whitespace);
|
||||||
|
}
|
||||||
|
else if (Obj_Equals(token, "vn")) {
|
||||||
|
assert((parsing_textures == 1 || parsing_textures == 2) && parsing_vertices == 2);
|
||||||
|
parsing_textures = 2;
|
||||||
|
parsing_normals = 1;
|
||||||
|
|
||||||
|
float* ptr = (float*)Obj_Push(&arena, sizeof(float) * 3);
|
||||||
|
ptr[0] = (float)Obj_ExpectNumber(&data);
|
||||||
|
ptr[1] = (float)Obj_ExpectNumber(&data);
|
||||||
|
ptr[2] = (float)Obj_ExpectNumber(&data);
|
||||||
|
if (result.normals == 0) result.normals = ptr;
|
||||||
|
Obj_Debug_ExpectRaw(&data, TokenType::whitespace);
|
||||||
|
}
|
||||||
|
else if (Obj_Equals(token, "f")) {
|
||||||
|
assert(parsing_normals == 1 && parsing_textures == 2 && parsing_vertices == 2);
|
||||||
|
int* ptr = (int*)Obj_Push(&arena, sizeof(int) * 9);
|
||||||
|
ptr[0] = (int)Obj_ExpectNumber(&data);
|
||||||
|
Obj_ExpectToken(&data, '/');
|
||||||
|
ptr[3] = (int)Obj_ExpectNumber(&data);
|
||||||
|
Obj_ExpectToken(&data, '/');
|
||||||
|
ptr[6] = (int)Obj_ExpectNumber(&data);
|
||||||
|
|
||||||
|
ptr[1] = (int)Obj_ExpectNumber(&data);
|
||||||
|
Obj_ExpectToken(&data, '/');
|
||||||
|
ptr[4] = (int)Obj_ExpectNumber(&data);
|
||||||
|
Obj_ExpectToken(&data, '/');
|
||||||
|
ptr[7] = (int)Obj_ExpectNumber(&data);
|
||||||
|
|
||||||
|
ptr[2] = (int)Obj_ExpectNumber(&data);
|
||||||
|
Obj_ExpectToken(&data, '/');
|
||||||
|
ptr[5] = (int)Obj_ExpectNumber(&data);
|
||||||
|
Obj_ExpectToken(&data, '/');
|
||||||
|
ptr[8] = (int)Obj_ExpectNumber(&data);
|
||||||
|
if (result.indices == 0) result.indices = ptr;
|
||||||
|
result.indices_count += 1;
|
||||||
|
|
||||||
|
Obj_Debug_ExpectRaw(&data, TokenType::whitespace);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
result.memory_taken = arena.p;
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
static
|
||||||
|
void Obj_TestLex() {
|
||||||
|
const char* d = "v 0.885739 0.001910 -0.380334";
|
||||||
|
char* dd = (char *)d;
|
||||||
|
assert(Obj_NextToken(&dd).type == TokenType::word);
|
||||||
|
Token t = Obj_NextToken(&dd); assert(t.type == TokenType::number && t.number > 0.8857);
|
||||||
|
t = Obj_NextToken(&dd); assert(t.type == TokenType::number && t.number > 0.0019);
|
||||||
|
t = Obj_NextToken(&dd); assert(t.type == TokenType::number && t.number < -0.38);
|
||||||
|
d = "# Blender v2.79 (sub 0) OBJ File: 'fighters_0.blend'\n"
|
||||||
|
"# www.blender.org\n"
|
||||||
|
"mtllib f-22.mtl\n"
|
||||||
|
"o F-22\n";
|
||||||
|
dd = (char *)d;
|
||||||
|
t = Obj_NextToken(&dd); assert(t.type == TokenType::word && Obj_Equals(t, (char*)"mtllib"));
|
||||||
|
t = Obj_NextToken(&dd); assert(t.type == TokenType::word && Obj_Equals(t, (char*)"f-22.mtl"));
|
||||||
|
t = Obj_NextToken(&dd); assert(t.type == TokenType::word && Obj_Equals(t, (char*)"o"));
|
||||||
|
t = Obj_NextToken(&dd); assert(t.type == TokenType::word && Obj_Equals(t, (char*)"F-22"));
|
||||||
|
}
|
||||||
|
|
||||||
|
void Obj_Test() {
|
||||||
|
Obj_TestLex();
|
||||||
|
}
|
||||||
14
objparser.h
Normal file
14
objparser.h
Normal file
@@ -0,0 +1,14 @@
|
|||||||
|
#pragma once
|
||||||
|
struct Obj {
|
||||||
|
float* vertices; // sets of 3 floats
|
||||||
|
float* texture; // sets of 2 floats
|
||||||
|
float* normals; // sets of 3 floats
|
||||||
|
int vertices_count; // count of sets(vertices, textures, normals)
|
||||||
|
|
||||||
|
int* indices; // layout: vvv/ttt/nnn
|
||||||
|
int indices_count; // 1 count == 1 full face == 3vertex indices, 3 texture coordinate indices, 3 normal indices
|
||||||
|
size_t memory_taken;
|
||||||
|
};
|
||||||
|
|
||||||
|
Obj Obj_Parse(char* memory, size_t memory_size, char* data);
|
||||||
|
void Obj_Test();
|
||||||
57
platform.cpp
57
platform.cpp
@@ -1,7 +1,13 @@
|
|||||||
|
/*
|
||||||
|
* The OS layer should expect ABGR writes to the screen, the bitmap is bottom up(origin 0,0 is in left bottom corner)
|
||||||
|
*/
|
||||||
|
|
||||||
|
#define _CRT_SECURE_NO_WARNINGS
|
||||||
#include "platform.h"
|
#include "platform.h"
|
||||||
#include <windows.h>
|
#include <windows.h>
|
||||||
#include <shellscalingapi.h>
|
#include <shellscalingapi.h>
|
||||||
|
|
||||||
|
|
||||||
typedef HRESULT tSetProcessDpiAwareness(PROCESS_DPI_AWARENESS);
|
typedef HRESULT tSetProcessDpiAwareness(PROCESS_DPI_AWARENESS);
|
||||||
|
|
||||||
Image screen;
|
Image screen;
|
||||||
@@ -49,7 +55,7 @@ void Win32_ScreenInit(int window_x, int window_y) {
|
|||||||
BITMAPINFO bminfo = {};
|
BITMAPINFO bminfo = {};
|
||||||
bminfo.bmiHeader.biSize = sizeof(bminfo.bmiHeader);
|
bminfo.bmiHeader.biSize = sizeof(bminfo.bmiHeader);
|
||||||
bminfo.bmiHeader.biWidth = window_x;
|
bminfo.bmiHeader.biWidth = window_x;
|
||||||
bminfo.bmiHeader.biHeight = -window_y;
|
bminfo.bmiHeader.biHeight = window_y;
|
||||||
bminfo.bmiHeader.biPlanes = 1;
|
bminfo.bmiHeader.biPlanes = 1;
|
||||||
bminfo.bmiHeader.biBitCount = 32;
|
bminfo.bmiHeader.biBitCount = 32;
|
||||||
bminfo.bmiHeader.biCompression = BI_RGB; // AA RR GG BB
|
bminfo.bmiHeader.biCompression = BI_RGB; // AA RR GG BB
|
||||||
@@ -134,10 +140,21 @@ bool OS_GameLoop() {
|
|||||||
Win32_ScreenInit((LONG)screen.x, (LONG)screen.y);
|
Win32_ScreenInit((LONG)screen.x, (LONG)screen.y);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// @Note: Draw screen to window
|
||||||
|
U32* p = screen.pixels;
|
||||||
|
if (p != 0) {
|
||||||
|
// @Note: Convert 0xABGR to 0xARGB
|
||||||
|
for (int y = 0; y < screen.y; y++) {
|
||||||
|
for (int x = 0; x < screen.x; x++) {
|
||||||
|
*p = ((*p & 0xff000000)) | ((*p & 0x00ff0000) >> 16) | ((*p & 0x0000ff00)) | ((*p & 0x000000ff) << 16);
|
||||||
|
p += 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
// @Note; Draw screen to window
|
|
||||||
SelectObject(g_screen_dc, g_screen_dib);
|
SelectObject(g_screen_dc, g_screen_dib);
|
||||||
BitBlt(g_window_dc, 0, 0, (int)screen.x, (int)screen.y, g_screen_dc, 0, 0, SRCCOPY);
|
BitBlt(g_window_dc, 0, 0, (int)screen.x, (int)screen.y, g_screen_dc, 0, 0, SRCCOPY);
|
||||||
|
}
|
||||||
|
|
||||||
Sleep(16);
|
Sleep(16);
|
||||||
return g_app_is_running;
|
return g_app_is_running;
|
||||||
}
|
}
|
||||||
@@ -148,3 +165,39 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
|
|||||||
g_cmdshow = nCmdShow;
|
g_cmdshow = nCmdShow;
|
||||||
return main();
|
return main();
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#include <stdio.h>
|
||||||
|
void OS_Message(const char* format, ...) {
|
||||||
|
char buffer[1024];
|
||||||
|
va_list args;
|
||||||
|
va_start(args, format);
|
||||||
|
vsnprintf(buffer, 1024, format, args);
|
||||||
|
va_end(args);
|
||||||
|
|
||||||
|
MessageBoxA(0, buffer, "Error!", 0);
|
||||||
|
}
|
||||||
|
|
||||||
|
char* OS_ReadFile(const char* path) {
|
||||||
|
char* result = 0;
|
||||||
|
FILE* f = fopen(path, "rb");
|
||||||
|
if (f) {
|
||||||
|
fseek(f, 0, SEEK_END);
|
||||||
|
U64 fsize = ftell(f);
|
||||||
|
fseek(f, 0, SEEK_SET);
|
||||||
|
|
||||||
|
result = (char*)malloc(fsize + 1ll);
|
||||||
|
if (result) {
|
||||||
|
fread(result, fsize, 1, f);
|
||||||
|
result[fsize] = 0;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
ASSERT(!"Malloc failed!")
|
||||||
|
}
|
||||||
|
fclose(f);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
ASSERT(!"Failed to read file");
|
||||||
|
}
|
||||||
|
|
||||||
|
return result;
|
||||||
|
}
|
||||||
@@ -18,3 +18,4 @@ extern bool keydown_b;
|
|||||||
|
|
||||||
bool OS_GameLoop();
|
bool OS_GameLoop();
|
||||||
void OS_Init(OSInitArgs);
|
void OS_Init(OSInitArgs);
|
||||||
|
char* OS_ReadFile(const char* path);
|
||||||
Reference in New Issue
Block a user