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Reorganise asset files

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This commit is contained in:
Doyle Thai 2017-05-26 01:12:39 +10:00
parent 4eb54c09b1
commit 3874526a79
7 changed files with 654 additions and 633 deletions
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581
src/DTRenderer.cpp
View File

@ -1,558 +1,13 @@
#include "DTRenderer.h"
#include "DTRendererAsset.h"
#include "DTRendererDebug.h"
#include "DTRendererPlatform.h"
#include "DTRendererRender.h"
#define STB_IMAGE_IMPLEMENTATION
#include "external/stb_image.h"
// #define DTR_DEBUG_RENDER_FONT_BITMAP
#ifdef DTR_DEBUG_RENDER_FONT_BITMAP
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "external/tests/stb_image_write.h"
#endif
#define DQN_IMPLEMENTATION
#include "dqn.h"
#include "external/tests/tinyrenderer/geometry.h"
#include "external/tests/tinyrenderer/model.cpp"
#include <algorithm>
#include <vector>
FILE_SCOPE void DebugTestWavefrontFaceAndVertexParser(WavefrontObj *const obj)
{
if (!obj) DQN_ASSERT(DQN_INVALID_CODE_PATH);
Model model = Model("african_head.obj");
DQN_ASSERT(obj->model.faces.count == model.nfaces());
for (i32 i = 0; i < model.nfaces(); i++)
{
std::vector<i32> correctFace = model.face(i);
WavefrontModelFace *myFace = &obj->model.faces.data[i];
DQN_ASSERT(myFace->vertexIndexArray.count == correctFace.size());
for (i32 j = 0; j < myFace->vertexIndexArray.count; j++)
{
// Ensure the vertex index references are correct per face
DQN_ASSERT(myFace->vertexIndexArray.data[j] == correctFace[j]);
Vec3f tmp = model.vert(correctFace[j]);
DqnV3 correctVertex = DqnV3_3f(tmp[0], tmp[1], tmp[2]);
DqnV3 myVertex = (obj->geometryArray.data[myFace->vertexIndexArray.data[j]]).xyz;
// Ensure the vertex values read are correct
for (i32 k = 0; k < DQN_ARRAY_COUNT(correctVertex.e); k++)
{
f32 delta = DQN_ABS(correctVertex.e[k] - myVertex.e[k]);
DQN_ASSERT(delta < 0.1f);
}
}
}
}
#include <math.h>
FILE_SCOPE inline WavefrontModelFace ObjWavefrontModelFaceInit(i32 capacity = 3)
{
WavefrontModelFace result = {};
DQN_ASSERT(DqnArray_Init(&result.vertexIndexArray, capacity));
DQN_ASSERT(DqnArray_Init(&result.textureIndexArray, capacity));
DQN_ASSERT(DqnArray_Init(&result.normalIndexArray, capacity));
return result;
}
FILE_SCOPE bool ObjWaveFrontInit(WavefrontObj *const obj, const i32 vertexInitCapacity = 1000,
const i32 faceInitCapacity = 200)
{
if (!obj) return false;
bool initialised = false;
initialised |= DqnArray_Init(&obj->geometryArray, vertexInitCapacity);
initialised |= DqnArray_Init(&obj->textureArray, vertexInitCapacity);
initialised |= DqnArray_Init(&obj->normalArray, vertexInitCapacity);
initialised |= DqnArray_Init(&obj->model.faces, faceInitCapacity);
if (!initialised)
{
DqnArray_Free(&obj->geometryArray);
DqnArray_Free(&obj->textureArray);
DqnArray_Free(&obj->normalArray);
DqnArray_Free(&obj->model.faces);
}
return initialised;
}
FILE_SCOPE bool ObjWavefrontLoad(const PlatformAPI api, PlatformMemory *const memory,
const char *const path, WavefrontObj *const obj)
{
if (!memory || !path || !obj) return false;
PlatformFile file = {};
if (!api.FileOpen(path, &file, PlatformFilePermissionFlag_Read, PlatformFileAction_OpenOnly))
return false; // TODO(doyle): Logging
// TODO(doyle): Make arrays use given memory not malloc
DqnTempMemStack tmpMemRegion = DqnMemStack_BeginTempRegion(&memory->transMemStack);
u8 *rawBytes = (u8 *)DqnMemStack_Push(&memory->transMemStack, file.size);
size_t bytesRead = api.FileRead(&file, rawBytes, file.size);
size_t fileSize = file.size;
api.FileClose(&file);
if (bytesRead != file.size)
{
// TODO(doyle): Logging
DqnMemStack_EndTempRegion(tmpMemRegion);
return false;
}
enum WavefrontVertexType {
WavefrontVertexType_Invalid,
WavefrontVertexType_Geometric,
WavefrontVertexType_Texture,
WavefrontVertexType_Normal,
};
if (!ObjWaveFrontInit(obj))
{
DqnMemStack_EndTempRegion(tmpMemRegion);
return false;
}
for (char *scan = (char *)rawBytes; scan && scan < ((char *)rawBytes + fileSize);)
{
switch (DqnChar_ToLower(*scan))
{
////////////////////////////////////////////////////////////////////
// Polygonal Free Form Statement
////////////////////////////////////////////////////////////////////
// Vertex Format: v[ |t|n|p] x y z [w]
case 'v':
{
scan++;
DQN_ASSERT(scan);
enum WavefrontVertexType type = WavefrontVertexType_Invalid;
char identifier = DqnChar_ToLower(*scan);
if (identifier == ' ') type = WavefrontVertexType_Geometric;
else if (identifier == 't' || identifier == 'n')
{
scan++;
if (identifier == 't') type = WavefrontVertexType_Texture;
else type = WavefrontVertexType_Normal;
}
else DQN_ASSERT(DQN_INVALID_CODE_PATH);
i32 vIndex = 0;
DqnV4 v4 = {0, 0, 0, 1.0f};
// Progress to first non space character after vertex identifier
for (; scan && *scan == ' '; scan++)
if (!scan) DQN_ASSERT(DQN_INVALID_CODE_PATH);
for (;;)
{
char *f32StartPtr = scan;
for (; *scan != ' ' && *scan != '\n';)
{
DQN_ASSERT(DqnChar_IsDigit(*scan) || (*scan == '.') || (*scan == '-') ||
*scan == 'e');
scan++;
}
i32 f32Len = (i32)((size_t)scan - (size_t)f32StartPtr);
v4.e[vIndex++] = Dqn_StrToF32(f32StartPtr, f32Len);
DQN_ASSERT(vIndex < DQN_ARRAY_COUNT(v4.e));
while (scan && (*scan == ' ' || *scan == '\n')) scan++;
if (!scan) break;
if (!(DqnChar_IsDigit(*scan) || *scan == '-')) break;
}
DQN_ASSERT(vIndex == 3 || vIndex == 4);
if (type == WavefrontVertexType_Geometric)
{
DqnArray_Push(&obj->geometryArray, v4);
}
else if (type == WavefrontVertexType_Texture)
{
DqnArray_Push(&obj->textureArray, v4.xyz);
}
else if (type == WavefrontVertexType_Normal)
{
DqnArray_Push(&obj->normalArray, v4.xyz);
}
else
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
}
}
break;
////////////////////////////////////////////////////////////////////
// Polygonal Geometry
////////////////////////////////////////////////////////////////////
// Vertex numbers can be negative to reference a relative offset to
// the vertex which means the relative order of the vertices
// specified in the file, i.e.
// v 0.000000 2.000000 2.000000
// v 0.000000 0.000000 2.000000
// v 2.000000 0.000000 2.000000
// v 2.000000 2.000000 2.000000
// f -4 -3 -2 -1
// Point Format: p v1 v2 v3 ...
// Each point is one vertex.
case 'p':
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
}
break;
// Line Format: l v1/vt1 v2/vt2 v3/vt3 ...
// Texture vertex is optional. Minimum of two vertex numbers, no
// limit on maximum.
case 'l':
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
}
break;
// Face Format: f v1/vt1/vn1 v2/vt2/vn2 v3/vt3/vn3 ...
// Minimum of three vertexes, no limit on maximum. vt, vn are
// optional. But specification of vt, vn must be consistent if given
// across all the vertices for the line.
// For example, to specify only the vertex and vertex normal
// reference numbers, you would enter:
// f 1//1 2//2 3//3 4//4
case 'f':
{
scan++;
while (scan && (*scan == ' ' || *scan == '\n')) scan++;
if (!scan) continue;
WavefrontModelFace face = ObjWavefrontModelFaceInit();
i32 numVertexesParsed = 0;
bool moreVertexesToParse = true;
while (moreVertexesToParse)
{
enum WavefrontVertexType type = WavefrontVertexType_Geometric;
// Read a vertexes 3 attributes v, vt, vn
for (i32 i = 0; i < 3; i++)
{
char *numStartPtr = scan;
while (scan && DqnChar_IsDigit(*scan))
scan++;
i32 numLen = (i32)((size_t)scan - (size_t)numStartPtr);
if (numLen > 0)
{
// NOTE(doyle): Obj format starts indexing from 1,
// so offset by -1 to make it zero-based indexes.
i32 vertIndex = (i32)Dqn_StrToI64(numStartPtr, numLen) - 1;
if (type == WavefrontVertexType_Geometric)
{
DQN_ASSERT(DqnArray_Push(&face.vertexIndexArray, vertIndex));
}
else if (type == WavefrontVertexType_Texture)
{
DQN_ASSERT(DqnArray_Push(&face.textureIndexArray, vertIndex));
}
else if (type == WavefrontVertexType_Normal)
{
DQN_ASSERT(DqnArray_Push(&face.normalIndexArray, vertIndex));
}
}
if (scan) scan++;
type = (enum WavefrontVertexType)((i32)type + 1);
}
numVertexesParsed++;
if (scan)
{
// Move to next "non-empty" character
while (scan && (*scan == ' ' || *scan == '\n'))
scan++;
// If it isn't a digit, then we've read all the
// vertexes for this face
if (!scan || (scan && !DqnChar_IsDigit(*scan)))
{
moreVertexesToParse = false;
}
}
}
DQN_ASSERT(numVertexesParsed >= 3);
DQN_ASSERT(DqnArray_Push(&obj->model.faces, face));
}
break;
////////////////////////////////////////////////////////////////////
// Misc
////////////////////////////////////////////////////////////////////
// Group Name Format: g group_name1 group_name2
// This is optional, if multiple groups are specified, then the
// following elements belong to all groups. The default group name
// is "default"
case 'g':
{
scan++;
while (scan && (*scan == ' ' || *scan == '\n')) scan++;
if (!scan) continue;
// Iterate to end of the name, i.e. move ptr to first space
char *namePtr = scan;
while (scan && (*scan != ' ' && *scan != '\n'))
scan++;
if (scan)
{
i32 nameLen = (i32)((size_t)scan - (size_t)namePtr);
DQN_ASSERT(obj->model.groupNameIndex + 1 < DQN_ARRAY_COUNT(obj->model.groupName));
DQN_ASSERT(!obj->model.groupName[obj->model.groupNameIndex]);
obj->model.groupName[obj->model.groupNameIndex++] = (char *)DqnMemStack_Push(
&memory->permMemStack, (nameLen + 1) * sizeof(char));
for (i32 i = 0; i < nameLen; i++)
obj->model.groupName[obj->model.groupNameIndex - 1][i] = namePtr[i];
while (scan && (*scan == ' ' || *scan == '\n'))
scan++;
}
}
break;
// Smoothing Group: s group_number
// Sets the smoothing group for the elements that follow it. If it's
// not to be used it can be specified as "off" or a value of 0.
case 's':
{
// Advance to first non space char after identifier
scan++;
while (scan && *scan == ' ' || *scan == '\n') scan++;
if (scan && DqnChar_IsDigit(*scan))
{
char *numStartPtr = scan;
while (scan && (*scan != ' ' && *scan != '\n'))
{
DQN_ASSERT(DqnChar_IsDigit(*scan));
scan++;
}
i32 numLen = (i32)((size_t)scan - (size_t)numStartPtr);
i32 groupSmoothing = (i32)Dqn_StrToI64(numStartPtr, numLen);
obj->model.groupSmoothing = groupSmoothing;
}
while (scan && *scan == ' ' || *scan == '\n') scan++;
}
break;
// Comment
case '#':
{
// Skip comment line until new line
while (scan && *scan != '\n')
scan++;
// Skip new lines and any leading white spaces
while (scan && (*scan == '\n' || *scan == ' '))
scan++;
}
break;
default:
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
}
break;
}
}
DqnMemStack_EndTempRegion(tmpMemRegion);
return true;
}
FILE_SCOPE bool BitmapFontCreate(const PlatformAPI api,
PlatformMemory *const memory,
DTRFont *const font, const char *const path,
const DqnV2i bitmapDim,
const DqnV2i codepointRange,
const f32 sizeInPt)
{
if (!memory || !font || !path) return false;
DTRFont loadedFont = {};
loadedFont.bitmapDim = bitmapDim;
loadedFont.codepointRange = codepointRange;
loadedFont.sizeInPt = sizeInPt;
////////////////////////////////////////////////////////////////////////////
// Load font data
////////////////////////////////////////////////////////////////////////////
PlatformFile file = {};
if (!api.FileOpen(path, &file, PlatformFilePermissionFlag_Read, PlatformFileAction_OpenOnly))
return false; // TODO(doyle): Logging
DqnTempMemStack tmpMemRegion = DqnMemStack_BeginTempRegion(&memory->transMemStack);
u8 *fontBuf = (u8 *)DqnMemStack_Push(&memory->transMemStack, file.size);
size_t bytesRead = api.FileRead(&file, fontBuf, file.size);
api.FileClose(&file);
if (bytesRead != file.size)
{
// TODO(doyle): Logging
DqnMemStack_EndTempRegion(tmpMemRegion);
return false;
}
stbtt_fontinfo fontInfo = {};
if (stbtt_InitFont(&fontInfo, fontBuf, 0) == 0)
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
return false;
}
if (DTR_DEBUG) DQN_ASSERT(stbtt_GetNumberOfFonts(fontBuf) == 1);
////////////////////////////////////////////////////////////////////////////
// Pack font data to bitmap
////////////////////////////////////////////////////////////////////////////
loadedFont.bitmap = (u8 *)DqnMemStack_Push(
&memory->permMemStack,
(size_t)(loadedFont.bitmapDim.w * loadedFont.bitmapDim.h));
stbtt_pack_context fontPackContext = {};
if (stbtt_PackBegin(&fontPackContext, loadedFont.bitmap, bitmapDim.w,
bitmapDim.h, 0, 1, NULL) == 1)
{
// stbtt_PackSetOversampling(&fontPackContext, 2, 2);
i32 numCodepoints =
(i32)((codepointRange.max + 1) - codepointRange.min);
loadedFont.atlas = (stbtt_packedchar *)DqnMemStack_Push(
&memory->permMemStack, numCodepoints * sizeof(stbtt_packedchar));
stbtt_PackFontRange(&fontPackContext, fontBuf, 0,
STBTT_POINT_SIZE(sizeInPt), (i32)codepointRange.min,
numCodepoints, loadedFont.atlas);
stbtt_PackEnd(&fontPackContext);
DqnMemStack_EndTempRegion(tmpMemRegion);
}
else
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
DqnMemStack_EndTempRegion(tmpMemRegion);
return false;
}
////////////////////////////////////////////////////////////////////////////
// Premultiply Alpha of Bitmap
////////////////////////////////////////////////////////////////////////////
for (i32 y = 0; y < bitmapDim.h; y++)
{
for (i32 x = 0; x < bitmapDim.w; x++)
{
// NOTE: Bitmap from stb_truetype is 1BPP. So the actual color
// value represents its' alpha value but also its' color.
u32 index = x + (y * bitmapDim.w);
f32 alpha = (f32)(loadedFont.bitmap[index]) / 255.0f;
f32 color = alpha;
color = DTRRender_SRGB1ToLinearSpacef(color);
color = color * alpha;
color = DTRRender_LinearToSRGB1Spacef(color) * 255.0f;
DQN_ASSERT(color >= 0.0f && color <= 255.0f);
loadedFont.bitmap[index] = (u8)color;
}
}
#ifdef DTR_DEBUG_RENDER_FONT_BITMAP
stbi_write_bmp("test.bmp", bitmapDim.w, bitmapDim.h, 1, loadedFont.bitmap);
#endif
*font = loadedFont;
return true;
}
// TODO(doyle): Uses malloc
FILE_SCOPE bool BitmapLoad(const PlatformAPI api, DTRBitmap *bitmap,
const char *const path,
DqnMemStack *const transMemStack)
{
if (!bitmap) return false;
PlatformFile file = {};
if (!api.FileOpen(path, &file, PlatformFilePermissionFlag_Read, PlatformFileAction_OpenOnly))
return false;
DqnTempMemStack tempBuffer = DqnMemStack_BeginTempRegion(transMemStack);
{
u8 *const rawData =
(u8 *)DqnMemStack_Push(transMemStack, file.size);
size_t bytesRead = api.FileRead(&file, rawData, file.size);
api.FileClose(&file);
if (bytesRead != file.size)
{
DqnMemStack_EndTempRegion(tempBuffer);
return false;
}
const u32 FORCE_4_BPP = 4;
bitmap->memory = stbi_load_from_memory(rawData, (i32)file.size, &bitmap->dim.w,
&bitmap->dim.h, NULL, FORCE_4_BPP);
bitmap->bytesPerPixel = FORCE_4_BPP;
}
DqnMemStack_EndTempRegion(tempBuffer);
if (!bitmap->memory) return false;
const i32 pitch = bitmap->dim.w * bitmap->bytesPerPixel;
for (i32 y = 0; y < bitmap->dim.h; y++)
{
u8 *const srcRow = bitmap->memory + (y * pitch);
for (i32 x = 0; x < bitmap->dim.w; x++)
{
u32 *pixelPtr = (u32 *)srcRow;
u32 pixel = pixelPtr[x];
DqnV4 color = {};
color.a = (f32)(pixel >> 24);
color.b = (f32)((pixel >> 16) & 0xFF);
color.g = (f32)((pixel >> 8) & 0xFF);
color.r = (f32)((pixel >> 0) & 0xFF);
DqnV4 preMulColor = color;
preMulColor *= DTRRENDER_INV_255;
preMulColor = DTRRender_PreMultiplyAlphaSRGB1WithLinearConversion(preMulColor);
preMulColor *= 255.0f;
pixel = (((u32)preMulColor.a << 24) |
((u32)preMulColor.b << 16) |
((u32)preMulColor.g << 8) |
((u32)preMulColor.r << 0));
pixelPtr[x] = pixel;
}
}
return true;
}
// #include <algorithm>
void CompAssignment(DTRRenderBuffer *const renderBuffer, PlatformInput *const input,
PlatformMemory *const memory)
@ -1503,32 +958,32 @@ extern "C" void DTR_Update(PlatformRenderBuffer *const platformRenderBuffer,
{
DebugTestStrToF32Converter();
DTR_DEBUG_EP_TIMED_BLOCK("DTR_Update Memory Initialisation");
// NOTE(doyle): Do premultiply ourselves
stbi_set_unpremultiply_on_load(true);
stbi_set_flip_vertically_on_load(true);
DTRAsset_InitGlobalState();
memory->isInit = true;
memory->context =
DqnMemStack_Push(&memory->permMemStack, sizeof(DTRState));
memory->context = DqnMemStack_Push(&memory->permMemStack, sizeof(DTRState));
DQN_ASSERT(memory->context);
state = (DTRState *)memory->context;
BitmapFontCreate(input->api, memory, &state->font, "Roboto-bold.ttf",
DTRAsset_FontToBitmapLoad(input->api, memory, &state->font, "Roboto-bold.ttf",
DqnV2i_2i(256, 256), DqnV2i_2i(' ', '~'), 12);
BitmapLoad(input->api, &state->bitmap, "tree00.bmp",
&memory->transMemStack);
DTRAsset_BitmapLoad(input->api, &state->bitmap, "tree00.bmp", &memory->transMemStack);
if (DTR_DEBUG)
{
DTRBitmap test = {};
DqnTempMemStack tmp = DqnMemStack_BeginTempRegion(&memory->transMemStack);
BitmapLoad(input->api, &test, "byte_read_check.bmp",
&memory->transMemStack);
DTRAsset_BitmapLoad(input->api, &test, "byte_read_check.bmp", &memory->transMemStack);
DqnMemStack_EndTempRegion(tmp);
}
DQN_ASSERT(BitmapLoad(input->api, &state->objTex, "african_head_diffuse.tga",
&memory->transMemStack));
DQN_ASSERT(ObjWavefrontLoad(input->api, memory, "african_head.obj", &state->obj));
if (DTRAsset_WavefModelLoad(input->api, memory, "african_head.obj", &state->obj))
{
DTRAsset_BitmapLoad(input->api, &state->objTex, "african_head_diffuse.tga", &memory->transMemStack);
}
DebugTestWavefrontFaceAndVertexParser(&state->obj);
DTRDebug_TestWavefFaceAndVertexParser(&state->obj);
}
DqnTempMemStack transMemTmpRegion = DqnMemStack_BeginTempRegion(&memory->transMemStack);
@ -1584,16 +1039,16 @@ extern "C" void DTR_Update(PlatformRenderBuffer *const platformRenderBuffer,
////////////////////////////////////////////////////////////////////////
const DqnV3 LIGHT = DqnV3_3i(0, 0, -1);
const f32 MODEL_SCALE = DQN_MIN(renderBuffer.width, renderBuffer.height) * 0.5f;
WavefrontObj *const waveObj = &state->obj;
DTRWavefModel *const waveObj = &state->obj;
DqnV3 modelP = DqnV3_3f(renderBuffer.width * 0.5f, renderBuffer.height * 0.5f, 0);
for (i32 i = 0; i < waveObj->model.faces.count; i++)
for (i32 i = 0; i < waveObj->faces.count; i++)
{
if (i == 852)
{
int BreakHere = 0;
}
WavefrontModelFace face = waveObj->model.faces.data[i];
DTRWavefModelFace face = waveObj->faces.data[i];
DQN_ASSERT(face.vertexIndexArray.count == 3);
i32 vertAIndex = face.vertexIndexArray.data[0];
i32 vertBIndex = face.vertexIndexArray.data[1];

47
src/DTRenderer.h
View File

@ -1,61 +1,18 @@
#ifndef DTRENDERER_H
#define DTRENDERER_H
#include "DTRendererAsset.h"
#include "dqn.h"
#include "external/stb_truetype.h"
typedef void DTR_UpdateFunction(struct PlatformRenderBuffer *const renderBuffer,
struct PlatformInput *const input,
struct PlatformMemory *const memory);
typedef struct WavefrontModelFace
{
DqnArray<i32> vertexIndexArray;
DqnArray<i32> textureIndexArray;
DqnArray<i32> normalIndexArray;
} WavefrontModelFace;
typedef struct WavefrontModel
{
// TODO(doyle): Fixed size
char *groupName[16];
i32 groupNameIndex;
i32 groupSmoothing;
DqnArray<WavefrontModelFace> faces;
} WavefrontModel;
typedef struct WavefrontObj
{
DqnArray<DqnV4> geometryArray;
DqnArray<DqnV3> textureArray;
DqnArray<DqnV3> normalArray;
WavefrontModel model;
} WavefrontObj;
typedef struct DTRFont
{
u8 *bitmap;
DqnV2i bitmapDim;
DqnV2i codepointRange;
f32 sizeInPt;
stbtt_packedchar *atlas;
} DTRFont;
typedef struct DTRBitmap
{
u8 *memory;
DqnV2i dim;
i32 bytesPerPixel;
} DTRBitmap;
typedef struct DTRState
{
DTRFont font;
DTRBitmap bitmap;
WavefrontObj obj;
DTRWavefModel obj;
DTRBitmap objTex;
} DTRState;
#endif

515
src/DTRendererAsset.cpp Normal file
View File

@ -0,0 +1,515 @@
#include "DTRendererAsset.h"
#include "DTRendererDebug.h"
#include "DTRendererRender.h"
#define STB_IMAGE_IMPLEMENTATION
#include "external/stb_image.h"
// #define DTR_DEBUG_RENDER_FONT_BITMAP
#ifdef DTR_DEBUG_RENDER_FONT_BITMAP
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "external/tests/stb_image_write.h"
#endif
void DTRAsset_InitGlobalState()
{
// NOTE(doyle): Do premultiply ourselves
stbi_set_unpremultiply_on_load(true);
stbi_set_flip_vertically_on_load(true);
}
FILE_SCOPE bool WavefModelInit(DTRWavefModel *const obj, const i32 vertexInitCapacity = 100,
const i32 faceInitCapacity = 100)
{
if (!obj) return false;
bool initialised = false;
initialised |= DqnArray_Init(&obj->geometryArray, vertexInitCapacity);
initialised |= DqnArray_Init(&obj->textureArray, vertexInitCapacity);
initialised |= DqnArray_Init(&obj->normalArray, vertexInitCapacity);
initialised |= DqnArray_Init(&obj->faces, faceInitCapacity);
if (!initialised)
{
DqnArray_Free(&obj->geometryArray);
DqnArray_Free(&obj->textureArray);
DqnArray_Free(&obj->normalArray);
DqnArray_Free(&obj->faces);
}
return initialised;
}
FILE_SCOPE inline DTRWavefModelFace WavefModelFaceInit(i32 capacity = 3)
{
DTRWavefModelFace result = {};
DQN_ASSERT(DqnArray_Init(&result.vertexIndexArray, capacity));
DQN_ASSERT(DqnArray_Init(&result.textureIndexArray, capacity));
DQN_ASSERT(DqnArray_Init(&result.normalIndexArray, capacity));
return result;
}
bool DTRAsset_WavefModelLoad(const PlatformAPI api, PlatformMemory *const memory,
const char *const path, DTRWavefModel *const obj)
{
if (!memory || !path || !obj) return false;
PlatformFile file = {};
if (!api.FileOpen(path, &file, PlatformFilePermissionFlag_Read, PlatformFileAction_OpenOnly))
return false; // TODO(doyle): Logging
// TODO(doyle): Make arrays use given memory not malloc
DqnTempMemStack tmpMemRegion = DqnMemStack_BeginTempRegion(&memory->transMemStack);
u8 *rawBytes = (u8 *)DqnMemStack_Push(&memory->transMemStack, file.size);
size_t bytesRead = api.FileRead(&file, rawBytes, file.size);
size_t fileSize = file.size;
api.FileClose(&file);
if (bytesRead != file.size)
{
// TODO(doyle): Logging
DqnMemStack_EndTempRegion(tmpMemRegion);
return false;
}
enum WavefVertexType {
WavefVertexType_Invalid,
WavefVertexType_Geometric,
WavefVertexType_Texture,
WavefVertexType_Normal,
};
if (!WavefModelInit(obj))
{
DqnMemStack_EndTempRegion(tmpMemRegion);
return false;
}
for (char *scan = (char *)rawBytes; scan && scan < ((char *)rawBytes + fileSize);)
{
switch (DqnChar_ToLower(*scan))
{
////////////////////////////////////////////////////////////////////
// Polygonal Free Form Statement
////////////////////////////////////////////////////////////////////
// Vertex Format: v[ |t|n|p] x y z [w]
case 'v':
{
scan++;
DQN_ASSERT(scan);
enum WavefVertexType type = WavefVertexType_Invalid;
char identifier = DqnChar_ToLower(*scan);
if (identifier == ' ') type = WavefVertexType_Geometric;
else if (identifier == 't' || identifier == 'n')
{
scan++;
if (identifier == 't') type = WavefVertexType_Texture;
else type = WavefVertexType_Normal;
}
else DQN_ASSERT(DQN_INVALID_CODE_PATH);
i32 vIndex = 0;
DqnV4 v4 = {0, 0, 0, 1.0f};
// Progress to first non space character after vertex identifier
for (; scan && *scan == ' '; scan++)
if (!scan) DQN_ASSERT(DQN_INVALID_CODE_PATH);
for (;;)
{
char *f32StartPtr = scan;
for (; *scan != ' ' && *scan != '\n';)
{
DQN_ASSERT(DqnChar_IsDigit(*scan) || (*scan == '.') || (*scan == '-') ||
*scan == 'e');
scan++;
}
i32 f32Len = (i32)((size_t)scan - (size_t)f32StartPtr);
v4.e[vIndex++] = Dqn_StrToF32(f32StartPtr, f32Len);
DQN_ASSERT(vIndex < DQN_ARRAY_COUNT(v4.e));
while (scan && (*scan == ' ' || *scan == '\n')) scan++;
if (!scan) break;
if (!(DqnChar_IsDigit(*scan) || *scan == '-')) break;
}
DQN_ASSERT(vIndex == 3 || vIndex == 4);
if (type == WavefVertexType_Geometric)
{
DqnArray_Push(&obj->geometryArray, v4);
}
else if (type == WavefVertexType_Texture)
{
DqnArray_Push(&obj->textureArray, v4.xyz);
}
else if (type == WavefVertexType_Normal)
{
DqnArray_Push(&obj->normalArray, v4.xyz);
}
else
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
}
}
break;
////////////////////////////////////////////////////////////////////
// Polygonal Geometry
////////////////////////////////////////////////////////////////////
// Vertex numbers can be negative to reference a relative offset to
// the vertex which means the relative order of the vertices
// specified in the file, i.e.
// v 0.000000 2.000000 2.000000
// v 0.000000 0.000000 2.000000
// v 2.000000 0.000000 2.000000
// v 2.000000 2.000000 2.000000
// f -4 -3 -2 -1
// Point Format: p v1 v2 v3 ...
// Each point is one vertex.
case 'p':
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
}
break;
// Line Format: l v1/vt1 v2/vt2 v3/vt3 ...
// Texture vertex is optional. Minimum of two vertex numbers, no
// limit on maximum.
case 'l':
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
}
break;
// Face Format: f v1/vt1/vn1 v2/vt2/vn2 v3/vt3/vn3 ...
// Minimum of three vertexes, no limit on maximum. vt, vn are
// optional. But specification of vt, vn must be consistent if given
// across all the vertices for the line.
// For example, to specify only the vertex and vertex normal
// reference numbers, you would enter:
// f 1//1 2//2 3//3 4//4
case 'f':
{
scan++;
while (scan && (*scan == ' ' || *scan == '\n')) scan++;
if (!scan) continue;
DTRWavefModelFace face = WavefModelFaceInit();
i32 numVertexesParsed = 0;
bool moreVertexesToParse = true;
while (moreVertexesToParse)
{
enum WavefVertexType type = WavefVertexType_Geometric;
// Read a vertexes 3 attributes v, vt, vn
for (i32 i = 0; i < 3; i++)
{
char *numStartPtr = scan;
while (scan && DqnChar_IsDigit(*scan))
scan++;
i32 numLen = (i32)((size_t)scan - (size_t)numStartPtr);
if (numLen > 0)
{
// NOTE(doyle): Obj format starts indexing from 1,
// so offset by -1 to make it zero-based indexes.
i32 vertIndex = (i32)Dqn_StrToI64(numStartPtr, numLen) - 1;
if (type == WavefVertexType_Geometric)
{
DQN_ASSERT(DqnArray_Push(&face.vertexIndexArray, vertIndex));
}
else if (type == WavefVertexType_Texture)
{
DQN_ASSERT(DqnArray_Push(&face.textureIndexArray, vertIndex));
}
else if (type == WavefVertexType_Normal)
{
DQN_ASSERT(DqnArray_Push(&face.normalIndexArray, vertIndex));
}
}
if (scan) scan++;
type = (enum WavefVertexType)((i32)type + 1);
}
numVertexesParsed++;
if (scan)
{
// Move to next "non-empty" character
while (scan && (*scan == ' ' || *scan == '\n'))
scan++;
// If it isn't a digit, then we've read all the
// vertexes for this face
if (!scan || (scan && !DqnChar_IsDigit(*scan)))
{
moreVertexesToParse = false;
}
}
}
DQN_ASSERT(numVertexesParsed >= 3);
DQN_ASSERT(DqnArray_Push(&obj->faces, face));
}
break;
////////////////////////////////////////////////////////////////////
// Misc
////////////////////////////////////////////////////////////////////
// Group Name Format: g group_name1 group_name2
// This is optional, if multiple groups are specified, then the
// following elements belong to all groups. The default group name
// is "default"
case 'g':
{
scan++;
while (scan && (*scan == ' ' || *scan == '\n')) scan++;
if (!scan) continue;
// Iterate to end of the name, i.e. move ptr to first space
char *namePtr = scan;
while (scan && (*scan != ' ' && *scan != '\n'))
scan++;
if (scan)
{
i32 nameLen = (i32)((size_t)scan - (size_t)namePtr);
DQN_ASSERT(obj->groupNameIndex + 1 < DQN_ARRAY_COUNT(obj->groupName));
DQN_ASSERT(!obj->groupName[obj->groupNameIndex]);
obj->groupName[obj->groupNameIndex++] = (char *)DqnMemStack_Push(
&memory->permMemStack, (nameLen + 1) * sizeof(char));
for (i32 i = 0; i < nameLen; i++)
obj->groupName[obj->groupNameIndex - 1][i] = namePtr[i];
while (scan && (*scan == ' ' || *scan == '\n'))
scan++;
}
}
break;
// Smoothing Group: s group_number
// Sets the smoothing group for the elements that follow it. If it's
// not to be used it can be specified as "off" or a value of 0.
case 's':
{
// Advance to first non space char after identifier
scan++;
while (scan && *scan == ' ' || *scan == '\n') scan++;
if (scan && DqnChar_IsDigit(*scan))
{
char *numStartPtr = scan;
while (scan && (*scan != ' ' && *scan != '\n'))
{
DQN_ASSERT(DqnChar_IsDigit(*scan));
scan++;
}
i32 numLen = (i32)((size_t)scan - (size_t)numStartPtr);
i32 groupSmoothing = (i32)Dqn_StrToI64(numStartPtr, numLen);
obj->groupSmoothing = groupSmoothing;
}
while (scan && *scan == ' ' || *scan == '\n') scan++;
}
break;
// Comment
case '#':
{
// Skip comment line until new line
while (scan && *scan != '\n')
scan++;
// Skip new lines and any leading white spaces
while (scan && (*scan == '\n' || *scan == ' '))
scan++;
}
break;
default:
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
}
break;
}
}
DqnMemStack_EndTempRegion(tmpMemRegion);
return true;
}
bool DTRAsset_FontToBitmapLoad(const PlatformAPI api, PlatformMemory *const memory,
DTRFont *const font, const char *const path, const DqnV2i bitmapDim,
const DqnV2i codepointRange, const f32 sizeInPt)
{
if (!memory || !font || !path) return false;
DTRFont loadedFont = {};
loadedFont.bitmapDim = bitmapDim;
loadedFont.codepointRange = codepointRange;
loadedFont.sizeInPt = sizeInPt;
////////////////////////////////////////////////////////////////////////////
// Load font data
////////////////////////////////////////////////////////////////////////////
PlatformFile file = {};
if (!api.FileOpen(path, &file, PlatformFilePermissionFlag_Read, PlatformFileAction_OpenOnly))
return false; // TODO(doyle): Logging
DqnTempMemStack tmpMemRegion = DqnMemStack_BeginTempRegion(&memory->transMemStack);
u8 *fontBuf = (u8 *)DqnMemStack_Push(&memory->transMemStack, file.size);
size_t bytesRead = api.FileRead(&file, fontBuf, file.size);
api.FileClose(&file);
if (bytesRead != file.size)
{
// TODO(doyle): Logging
DqnMemStack_EndTempRegion(tmpMemRegion);
return false;
}
stbtt_fontinfo fontInfo = {};
if (stbtt_InitFont(&fontInfo, fontBuf, 0) == 0)
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
return false;
}
if (DTR_DEBUG) DQN_ASSERT(stbtt_GetNumberOfFonts(fontBuf) == 1);
////////////////////////////////////////////////////////////////////////////
// Pack font data to bitmap
////////////////////////////////////////////////////////////////////////////
loadedFont.bitmap = (u8 *)DqnMemStack_Push(
&memory->permMemStack,
(size_t)(loadedFont.bitmapDim.w * loadedFont.bitmapDim.h));
stbtt_pack_context fontPackContext = {};
if (stbtt_PackBegin(&fontPackContext, loadedFont.bitmap, bitmapDim.w,
bitmapDim.h, 0, 1, NULL) == 1)
{
// stbtt_PackSetOversampling(&fontPackContext, 2, 2);
i32 numCodepoints =
(i32)((codepointRange.max + 1) - codepointRange.min);
loadedFont.atlas = (stbtt_packedchar *)DqnMemStack_Push(
&memory->permMemStack, numCodepoints * sizeof(stbtt_packedchar));
stbtt_PackFontRange(&fontPackContext, fontBuf, 0,
STBTT_POINT_SIZE(sizeInPt), (i32)codepointRange.min,
numCodepoints, loadedFont.atlas);
stbtt_PackEnd(&fontPackContext);
DqnMemStack_EndTempRegion(tmpMemRegion);
}
else
{
DQN_ASSERT(DQN_INVALID_CODE_PATH);
DqnMemStack_EndTempRegion(tmpMemRegion);
return false;
}
////////////////////////////////////////////////////////////////////////////
// Premultiply Alpha of Bitmap
////////////////////////////////////////////////////////////////////////////
for (i32 y = 0; y < bitmapDim.h; y++)
{
for (i32 x = 0; x < bitmapDim.w; x++)
{
// NOTE: Bitmap from stb_truetype is 1BPP. So the actual color
// value represents its' alpha value but also its' color.
u32 index = x + (y * bitmapDim.w);
f32 alpha = (f32)(loadedFont.bitmap[index]) / 255.0f;
f32 color = alpha;
color = DTRRender_SRGB1ToLinearSpacef(color);
color = color * alpha;
color = DTRRender_LinearToSRGB1Spacef(color) * 255.0f;
DQN_ASSERT(color >= 0.0f && color <= 255.0f);
loadedFont.bitmap[index] = (u8)color;
}
}
#ifdef DTR_DEBUG_RENDER_FONT_BITMAP
stbi_write_bmp("test.bmp", bitmapDim.w, bitmapDim.h, 1, loadedFont.bitmap);
#endif
*font = loadedFont;
return true;
}
// TODO(doyle): Uses malloc
bool DTRAsset_BitmapLoad(const PlatformAPI api, DTRBitmap *bitmap, const char *const path,
DqnMemStack *const transMemStack)
{
if (!bitmap) return false;
PlatformFile file = {};
if (!api.FileOpen(path, &file, PlatformFilePermissionFlag_Read, PlatformFileAction_OpenOnly))
return false;
DqnTempMemStack tempBuffer = DqnMemStack_BeginTempRegion(transMemStack);
{
u8 *const rawData =
(u8 *)DqnMemStack_Push(transMemStack, file.size);
size_t bytesRead = api.FileRead(&file, rawData, file.size);
api.FileClose(&file);
if (bytesRead != file.size)
{
DqnMemStack_EndTempRegion(tempBuffer);
return false;
}
const u32 FORCE_4_BPP = 4;
bitmap->memory = stbi_load_from_memory(rawData, (i32)file.size, &bitmap->dim.w,
&bitmap->dim.h, NULL, FORCE_4_BPP);
bitmap->bytesPerPixel = FORCE_4_BPP;
}
DqnMemStack_EndTempRegion(tempBuffer);
if (!bitmap->memory) return false;
const i32 pitch = bitmap->dim.w * bitmap->bytesPerPixel;
for (i32 y = 0; y < bitmap->dim.h; y++)
{
u8 *const srcRow = bitmap->memory + (y * pitch);
for (i32 x = 0; x < bitmap->dim.w; x++)
{
u32 *pixelPtr = (u32 *)srcRow;
u32 pixel = pixelPtr[x];
DqnV4 color = {};
color.a = (f32)(pixel >> 24);
color.b = (f32)((pixel >> 16) & 0xFF);
color.g = (f32)((pixel >> 8) & 0xFF);
color.r = (f32)((pixel >> 0) & 0xFF);
DqnV4 preMulColor = color;
preMulColor *= DTRRENDER_INV_255;
preMulColor = DTRRender_PreMultiplyAlphaSRGB1WithLinearConversion(preMulColor);
preMulColor *= 255.0f;
pixel = (((u32)preMulColor.a << 24) |
((u32)preMulColor.b << 16) |
((u32)preMulColor.g << 8) |
((u32)preMulColor.r << 0));
pixelPtr[x] = pixel;
}
}
return true;
}

52
src/DTRendererAsset.h Normal file
View File

@ -0,0 +1,52 @@
#ifndef DTRENDERER_ASSET_H
#define DTRENDERER_ASSET_H
#include "DTRendererPlatform.h"
#include "dqn.h"
#include "external/stb_truetype.h"
typedef struct DTRWavefModelFace
{
DqnArray<i32> vertexIndexArray;
DqnArray<i32> textureIndexArray;
DqnArray<i32> normalIndexArray;
} DTRWavefModelFace;
typedef struct DTRWavefModel
{
DqnArray<DqnV4> geometryArray;
DqnArray<DqnV3> textureArray;
DqnArray<DqnV3> normalArray;
// TODO(doyle): Fixed size
char *groupName[16];
i32 groupNameIndex;
i32 groupSmoothing;
DqnArray<DTRWavefModelFace> faces;
} DTRWavefModel;
typedef struct DTRFont
{
u8 *bitmap;
DqnV2i bitmapDim;
DqnV2i codepointRange;
f32 sizeInPt;
stbtt_packedchar *atlas;
} DTRFont;
typedef struct DTRBitmap
{
u8 *memory;
DqnV2i dim;
i32 bytesPerPixel;
} DTRBitmap;
void DTRAsset_InitGlobalState ();
bool DTRAsset_WavefModelLoad (const PlatformAPI api, PlatformMemory *const memory, const char *const path, DTRWavefModel *const obj);
bool DTRAsset_FontToBitmapLoad(const PlatformAPI api, PlatformMemory *const memory, DTRFont *const font, const char *const path, const DqnV2i bitmapDim, const DqnV2i codepointRange, const f32 sizeInPt);
bool DTRAsset_BitmapLoad (const PlatformAPI api, DTRBitmap *bitmap, const char *const path, DqnMemStack *const transMemStack);
#endif

47
src/DTRendererDebug.cpp
View File

@ -1,11 +1,50 @@
#include "DTRendererDebug.h"
#include "DTRenderer.h"
#include "DTRendererAsset.h"
#include "DTRendererPlatform.h"
#include "DTRendererRender.h"
#include "dqn.h"
#include "external/tests/tinyrenderer/geometry.h"
#include "external/tests/tinyrenderer/model.cpp"
#include <vector>
DTRDebug globalDebug;
void DTRDebug_TestWavefFaceAndVertexParser(DTRWavefModel *const obj)
{
if (DTR_DEBUG)
{
if (!obj) DQN_ASSERT(DQN_INVALID_CODE_PATH);
Model model = Model("african_head.obj");
DQN_ASSERT(obj->faces.count == model.nfaces());
for (i32 i = 0; i < model.nfaces(); i++)
{
std::vector<i32> correctFace = model.face(i);
DTRWavefModelFace *myFace = &obj->faces.data[i];
DQN_ASSERT(myFace->vertexIndexArray.count == correctFace.size());
for (i32 j = 0; j < myFace->vertexIndexArray.count; j++)
{
// Ensure the vertex index references are correct per face
DQN_ASSERT(myFace->vertexIndexArray.data[j] == correctFace[j]);
Vec3f tmp = model.vert(correctFace[j]);
DqnV3 correctVertex = DqnV3_3f(tmp[0], tmp[1], tmp[2]);
DqnV3 myVertex = (obj->geometryArray.data[myFace->vertexIndexArray.data[j]]).xyz;
// Ensure the vertex values read are correct
for (i32 k = 0; k < DQN_ARRAY_COUNT(correctVertex.e); k++)
{
f32 delta = DQN_ABS(correctVertex.e[k] - myVertex.e[k]);
DQN_ASSERT(delta < 0.1f);
}
}
}
}
}
void DTRDebug_DumpZBuffer(DTRRenderBuffer *const renderBuffer, DqnMemStack *const transMemStack)
{
@ -191,4 +230,12 @@ void DTRDebug_Update(DTRState *const state,
}
}
void inline DTRDebug_CounterIncrement(enum DTRDebugCounter tag)
{
if (DTR_DEBUG)
{
DQN_ASSERT(tag >= 0 && tag < DTRDebugCounter_Count);
globalDebug.counter[tag]++;
}
}

26
src/DTRendererDebug.h
View File

@ -2,7 +2,10 @@
#define DTRENDERER_DEBUG_H
#include "dqn.h"
// NOTE: When DTR_DEBUG is 0, _ALL_ debug code is compiled out.
#define DTR_DEBUG 1
#if DTR_DEBUG
#define DTR_DEBUG_RENDER 1
@ -36,6 +39,7 @@ typedef struct DTRFont DTRFont;
typedef struct DTRState DTRState;
typedef struct PlatformInput PlatformInput;
typedef struct PlatformMemory PlatformMemory;
typedef struct DTRWavefObj DTRWavefObj;
enum DTRDebugCounter
{
@ -67,22 +71,12 @@ typedef struct DTRDebug
extern DTRDebug globalDebug;
void DTRDebug_DumpZBuffer(DTRRenderBuffer *const renderBuffer, DqnMemStack *const transMemStack);
void DTRDebug_PushText(const char *const formatStr, ...);
void DTRDebug_Update(DTRState *const state,
DTRRenderBuffer *const renderBuffer,
PlatformInput *const input, PlatformMemory *const memory);
void inline DTRDebug_BeginCycleCount(enum DTRDebugCycleCount tag);
void DTRDebug_TestWavefFaceAndVertexParser(DTRWavefObj *const obj);
void DTRDebug_DumpZBuffer (DTRRenderBuffer *const renderBuffer, DqnMemStack *const transMemStack);
void DTRDebug_PushText (const char *const formatStr, ...);
void DTRDebug_Update (DTRState *const state, DTRRenderBuffer *const renderBuffer, PlatformInput *const input, PlatformMemory *const memory);
void inline DTRDebug_BeginCycleCount (enum DTRDebugCycleCount tag);
void inline DTRDebug_EndCycleCount (enum DTRDebugCycleCount tag);
void inline DTRDebug_CounterIncrement(enum DTRDebugCounter tag)
{
if (DTR_DEBUG)
{
DQN_ASSERT(tag >= 0 && tag < DTRDebugCounter_Count);
globalDebug.counter[tag]++;
}
}
void inline DTRDebug_CounterIncrement (enum DTRDebugCounter tag);
#endif

1
src/UnityBuild/UnityBuild.cpp
View File

@ -1,3 +1,4 @@
#include "..\DTRendererDebug.cpp"
#include "..\DTRendererRender.cpp"
#include "..\DTRenderer.cpp"
#include "..\DTRendererAsset.cpp"