Added example 09-hdr.

This commit is contained in:
bkaradzic 2013-02-26 21:24:16 -08:00
parent 0d21a23ba7
commit 9f667c3b12
77 changed files with 1200 additions and 4 deletions

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@ -268,6 +268,15 @@ https://github.com/aras-p/glsl-optimizer
http://nothings.org/stb_image.c http://nothings.org/stb_image.c
Assets
------
Bunny
[Stanford University Computer Graphics Laboratory](http://www-graphics.stanford.edu/data/3Dscanrep/)
Uffizi
[Light Probe Image Gallery ](http://www.pauldebevec.com/Probes/)
Contributors Contributors
------------ ------------

53
examples/09-hdr/common.sh Normal file
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/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "../common/common.sh"
uniform vec4 u_offset[16];
uniform vec4 u_weight[16];
uniform vec4 u_tonemap;
float reinhard(float _x)
{
return _x / (_x + 1.0);
}
vec3 reinhard(vec3 _x)
{
return _x / (_x + 1.0);
}
float reinhard2(float _x, float _whiteSqr)
{
return (_x * (1.0 + _x/_whiteSqr) ) / (1.0 + _x);
}
vec3 reinhard2(vec3 _x, float _whiteSqr)
{
return (_x * (1.0 + _x/_whiteSqr) ) / (1.0 + _x);
}
vec4 blur9(sampler2D _sampler, vec2 _uv0, vec4 _uv1, vec4 _uv2, vec4 _uv3, vec4 _uv4)
{
#define _BLUR9_WEIGHT_0 1.0
#define _BLUR9_WEIGHT_1 0.9
#define _BLUR9_WEIGHT_2 0.55
#define _BLUR9_WEIGHT_3 0.18
#define _BLUR9_WEIGHT_4 0.1
#define _BLUR9_NORMALIZE (_BLUR9_WEIGHT_0+2.0*(_BLUR9_WEIGHT_1+_BLUR9_WEIGHT_2+_BLUR9_WEIGHT_3+_BLUR9_WEIGHT_4) )
#define BLUR9_WEIGHT(_x) (_BLUR9_WEIGHT_##_x/_BLUR9_NORMALIZE)
vec4 blur;
blur = texture2D(_sampler, _uv0)*BLUR9_WEIGHT(0);
blur += texture2D(_sampler, _uv1.xy)*BLUR9_WEIGHT(1);
blur += texture2D(_sampler, _uv1.zw)*BLUR9_WEIGHT(1);
blur += texture2D(_sampler, _uv2.xy)*BLUR9_WEIGHT(2);
blur += texture2D(_sampler, _uv2.zw)*BLUR9_WEIGHT(2);
blur += texture2D(_sampler, _uv3.xy)*BLUR9_WEIGHT(3);
blur += texture2D(_sampler, _uv3.zw)*BLUR9_WEIGHT(3);
blur += texture2D(_sampler, _uv4.xy)*BLUR9_WEIGHT(4);
blur += texture2D(_sampler, _uv4.zw)*BLUR9_WEIGHT(4);
return blur;
}

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@ -0,0 +1,15 @@
$input v_texcoord0, v_texcoord1, v_texcoord2, v_texcoord3, v_texcoord4
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "common.sh"
SAMPLER2D(u_texColor, 0);
void main()
{
gl_FragColor = blur9(u_texColor, v_texcoord0, v_texcoord1, v_texcoord2, v_texcoord3, v_texcoord4);
}

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$input v_texcoord0
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "common.sh"
SAMPLER2D(u_texColor, 0);
SAMPLER2D(u_texLum, 1);
void main()
{
float lum = clamp(decodeRE8(texture2D(u_texLum, v_texcoord0) ), 0.1, 0.7);
vec3 rgb = vec3(0.0, 0.0, 0.0);
rgb += decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[0].xy) );
rgb += decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[1].xy) );
rgb += decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[2].xy) );
rgb += decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[3].xy) );
rgb += decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[4].xy) );
rgb += decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[5].xy) );
rgb += decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[6].xy) );
rgb += decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[7].xy) );
rgb += decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[8].xy) );
rgb *= 1.0/9.0;
float middleGray = u_tonemap.x;
float whiteSqr = u_tonemap.y;
float treshold = u_tonemap.z;
float offset = u_tonemap.w;
rgb = max(vec3_splat(0.0), rgb - treshold) * middleGray / (lum + 0.0001);
rgb = reinhard2(rgb, whiteSqr);
gl_FragColor = toGamma(vec4(rgb, 1.0) );
}

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$input v_texcoord0
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "common.sh"
SAMPLER2D(u_texColor, 0);
void main()
{
float delta = 0.0001;
vec3 rgb0 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[0].xy) );
vec3 rgb1 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[1].xy) );
vec3 rgb2 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[2].xy) );
vec3 rgb3 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[3].xy) );
vec3 rgb4 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[4].xy) );
vec3 rgb5 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[5].xy) );
vec3 rgb6 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[6].xy) );
vec3 rgb7 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[7].xy) );
vec3 rgb8 = decodeRGBE8(texture2D(u_texColor, v_texcoord0+u_offset[8].xy) );
float avg = luma(rgb0).x
+ luma(rgb1).x
+ luma(rgb2).x
+ luma(rgb3).x
+ luma(rgb4).x
+ luma(rgb5).x
+ luma(rgb6).x
+ luma(rgb7).x
+ luma(rgb8).x
;
avg *= 1.0/9.0;
gl_FragColor = encodeRE8(avg);
}

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$input v_texcoord0
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "common.sh"
SAMPLER2D(u_texColor, 0);
void main()
{
float sum;
sum = decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[ 0].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[ 1].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[ 2].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[ 3].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[ 4].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[ 5].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[ 6].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[ 7].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[ 8].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[ 9].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[10].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[11].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[12].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[13].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[14].xy) );
sum += decodeRE8(texture2D(u_texColor, v_texcoord0+u_offset[15].xy) );
float avg = sum/16.0;
gl_FragColor = encodeRE8(avg);
}

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@ -0,0 +1,56 @@
$input v_pos, v_view, v_normal
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "common.sh"
uniform float u_time;
SAMPLERCUBE(u_texCube, 0);
vec2 blinn(vec3 _lightDir, vec3 _normal, vec3 _viewDir)
{
float ndotl = dot(_normal, _lightDir);
vec3 reflected = _lightDir - 2.0*ndotl*_normal; // reflect(_lightDir, _normal);
float rdotv = dot(reflected, _viewDir);
return vec2(ndotl, rdotv);
}
float fresnel(float _ndotl, float _bias, float _pow)
{
float facing = (1.0 - _ndotl);
return max(_bias + (1.0 - _bias) * pow(facing, _pow), 0.0);
}
vec4 lit(float _ndotl, float _rdotv, float _m)
{
float diff = max(0.0, _ndotl);
float spec = step(0.0, _ndotl) * max(0.0, _rdotv * _m);
return vec4(1.0, diff, spec, 1.0);
}
void main()
{
vec3 lightDir = vec3(0.0, 0.0, -1.0);
vec3 normal = normalize(v_normal);
vec3 view = normalize(v_view);
vec2 bln = blinn(lightDir, normal, view);
vec4 lc = lit(bln.x, bln.y, 1.0);
float fres = fresnel(bln.x, 0.2, 5.0);
float index = ( (sin(v_pos.x*3.0+u_time)*0.3+0.7)
+ ( cos(v_pos.y*3.0+u_time)*0.4+0.6)
+ ( cos(v_pos.z*3.0+u_time)*0.2+0.8)
)*M_PI;
vec3 color = vec3(sin(index*8.0)*0.4 + 0.6
, sin(index*4.0)*0.4 + 0.6
, sin(index*2.0)*0.4 + 0.6
);
color *= textureCube(u_texCube, reflect(view, -normal) ).xyz;
gl_FragColor = encodeRGBE8(color.xyz*lc.y + fres*pow(lc.z, 128.0) );
}

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$input v_texcoord0
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "common.sh"
SAMPLERCUBE(u_texCube, 0);
uniform mat4 u_mtx;
void main()
{
vec3 dir = vec3(v_texcoord0*2.0 - 1.0, 1.0);
dir = normalize(mul(u_mtx, vec4(dir, 0.0) ).xyz);
gl_FragColor = encodeRGBE8(textureCube(u_texCube, dir).xyz);
}

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@ -0,0 +1,42 @@
$input v_texcoord0, v_texcoord1, v_texcoord2, v_texcoord3, v_texcoord4
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "common.sh"
SAMPLER2D(u_texColor, 0);
SAMPLER2D(u_texLum, 1);
SAMPLER2D(u_texBlur, 2);
void main()
{
vec3 rgb = decodeRGBE8(texture2D(u_texColor, v_texcoord0) );
float lum = clamp(decodeRE8(texture2D(u_texLum, v_texcoord0) ), 0.1, 0.7);
vec3 Yxy = convertRGB2Yxy(rgb);
float middleGray = u_tonemap.x;
float whiteSqr = u_tonemap.y;
float treshold = u_tonemap.z;
float offset = u_tonemap.w;
float lp = Yxy.x * middleGray / (lum + 0.0001);
Yxy.x = reinhard2(lp, whiteSqr);
rgb = convertYxy2RGB(Yxy);
vec4 blur = blur9(u_texBlur
, v_texcoord0
, v_texcoord1
, v_texcoord2
, v_texcoord3
, v_texcoord4
);
rgb += 0.6 * blur.xyz;
gl_FragColor = toGamma(vec4(rgb, 1.0) );
}

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examples/09-hdr/hdr.cpp Normal file
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/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include <bgfx.h>
#include <bx/bx.h>
#include <bx/countof.h>
#include <bx/timer.h>
#include <bx/readerwriter.h>
#include "../common/entry.h"
#include "../common/dbg.h"
#include "../common/math.h"
#include "../common/processevents.h"
#include <stdio.h>
#include <string.h>
#include <vector>
static const char* s_shaderPath = NULL;
static void shaderFilePath(char* _out, const char* _name)
{
strcpy(_out, s_shaderPath);
strcat(_out, _name);
strcat(_out, ".bin");
}
long int fsize(FILE* _file)
{
long int pos = ftell(_file);
fseek(_file, 0L, SEEK_END);
long int size = ftell(_file);
fseek(_file, pos, SEEK_SET);
return size;
}
static const bgfx::Memory* load(const char* _filePath)
{
FILE* file = fopen(_filePath, "rb");
if (NULL != file)
{
uint32_t size = (uint32_t)fsize(file);
const bgfx::Memory* mem = bgfx::alloc(size+1);
size_t ignore = fread(mem->data, 1, size, file);
BX_UNUSED(ignore);
fclose(file);
mem->data[mem->size-1] = '\0';
return mem;
}
return NULL;
}
static const bgfx::Memory* loadShader(const char* _name)
{
char filePath[512];
shaderFilePath(filePath, _name);
return load(filePath);
}
static bgfx::ProgramHandle loadProgram(const char* _vshName, const char* _fshName)
{
const bgfx::Memory* mem;
mem = loadShader(_vshName);
bgfx::VertexShaderHandle vsh = bgfx::createVertexShader(mem);
mem = loadShader(_fshName);
bgfx::FragmentShaderHandle fsh = bgfx::createFragmentShader(mem);
bgfx::ProgramHandle program = bgfx::createProgram(vsh, fsh);
bgfx::destroyVertexShader(vsh);
bgfx::destroyFragmentShader(fsh);
return program;
}
static const bgfx::Memory* loadTexture(const char* _name)
{
char filePath[512];
strcpy(filePath, "textures/");
strcat(filePath, _name);
return load(filePath);
}
struct Aabb
{
float m_min[3];
float m_max[3];
};
struct Obb
{
float m_mtx[16];
};
struct Sphere
{
float m_center[3];
float m_radius;
};
struct Primitive
{
uint32_t m_startIndex;
uint32_t m_numIndices;
uint32_t m_startVertex;
uint32_t m_numVertices;
Sphere m_sphere;
Aabb m_aabb;
Obb m_obb;
};
typedef std::vector<Primitive> PrimitiveArray;
struct Group
{
Group()
{
reset();
}
void reset()
{
m_vbh.idx = bgfx::invalidHandle;
m_ibh.idx = bgfx::invalidHandle;
m_prims.clear();
}
bgfx::VertexBufferHandle m_vbh;
bgfx::IndexBufferHandle m_ibh;
Sphere m_sphere;
Aabb m_aabb;
Obb m_obb;
PrimitiveArray m_prims;
};
struct Mesh
{
void load(const char* _filePath)
{
#define BGFX_CHUNK_MAGIC_VB BX_MAKEFOURCC('V', 'B', ' ', 0x0)
#define BGFX_CHUNK_MAGIC_IB BX_MAKEFOURCC('I', 'B', ' ', 0x0)
#define BGFX_CHUNK_MAGIC_PRI BX_MAKEFOURCC('P', 'R', 'I', 0x0)
bx::CrtFileReader reader;
reader.open(_filePath);
Group group;
uint32_t chunk;
while (4 == bx::read(&reader, chunk) )
{
switch (chunk)
{
case BGFX_CHUNK_MAGIC_VB:
{
bx::read(&reader, group.m_sphere);
bx::read(&reader, group.m_aabb);
bx::read(&reader, group.m_obb);
bx::read(&reader, m_decl);
uint16_t stride = m_decl.getStride();
uint16_t numVertices;
bx::read(&reader, numVertices);
const bgfx::Memory* mem = bgfx::alloc(numVertices*stride);
bx::read(&reader, mem->data, mem->size);
group.m_vbh = bgfx::createVertexBuffer(mem, m_decl);
}
break;
case BGFX_CHUNK_MAGIC_IB:
{
uint32_t numIndices;
bx::read(&reader, numIndices);
const bgfx::Memory* mem = bgfx::alloc(numIndices*2);
bx::read(&reader, mem->data, mem->size);
group.m_ibh = bgfx::createIndexBuffer(mem);
}
break;
case BGFX_CHUNK_MAGIC_PRI:
{
uint16_t len;
bx::read(&reader, len);
std::string material;
material.resize(len);
bx::read(&reader, const_cast<char*>(material.c_str() ), len);
uint16_t num;
bx::read(&reader, num);
for (uint32_t ii = 0; ii < num; ++ii)
{
bx::read(&reader, len);
std::string name;
name.resize(len);
bx::read(&reader, const_cast<char*>(name.c_str() ), len);
Primitive prim;
bx::read(&reader, prim.m_startIndex);
bx::read(&reader, prim.m_numIndices);
bx::read(&reader, prim.m_startVertex);
bx::read(&reader, prim.m_numVertices);
bx::read(&reader, prim.m_sphere);
bx::read(&reader, prim.m_aabb);
bx::read(&reader, prim.m_obb);
group.m_prims.push_back(prim);
}
m_groups.push_back(group);
group.reset();
}
break;
default:
DBG("%08x at %d", chunk, reader.seek() );
break;
}
}
reader.close();
}
void unload()
{
for (GroupArray::const_iterator it = m_groups.begin(), itEnd = m_groups.end(); it != itEnd; ++it)
{
const Group& group = *it;
bgfx::destroyVertexBuffer(group.m_vbh);
if (bgfx::invalidHandle != group.m_ibh.idx)
{
bgfx::destroyIndexBuffer(group.m_ibh);
}
}
m_groups.clear();
}
void submit(uint8_t _view, bgfx::ProgramHandle _program, float* _mtx)
{
for (GroupArray::const_iterator it = m_groups.begin(), itEnd = m_groups.end(); it != itEnd; ++it)
{
const Group& group = *it;
// Set model matrix for rendering.
bgfx::setTransform(_mtx);
bgfx::setProgram(_program);
bgfx::setIndexBuffer(group.m_ibh);
bgfx::setVertexBuffer(group.m_vbh);
// Set render states.
bgfx::setState(0
|BGFX_STATE_RGB_WRITE
|BGFX_STATE_ALPHA_WRITE
|BGFX_STATE_DEPTH_WRITE
|BGFX_STATE_DEPTH_TEST_LESS
|BGFX_STATE_CULL_CCW
|BGFX_STATE_MSAA
);
// Submit primitive for rendering to view 0.
bgfx::submit(_view);
}
}
bgfx::VertexDecl m_decl;
typedef std::vector<Group> GroupArray;
GroupArray m_groups;
};
static bool s_flipV = false;
static float s_texelHalf = 0.0f;
struct PosColorTexCoord0Vertex
{
float m_x;
float m_y;
float m_z;
uint32_t m_rgba;
float m_u;
float m_v;
static void init()
{
ms_decl.begin();
ms_decl.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float);
ms_decl.add(bgfx::Attrib::Color0, 4, bgfx::AttribType::Uint8, true);
ms_decl.add(bgfx::Attrib::TexCoord0, 2, bgfx::AttribType::Float);
ms_decl.end();
}
static bgfx::VertexDecl ms_decl;
};
bgfx::VertexDecl PosColorTexCoord0Vertex::ms_decl;
void screenSpaceQuad(float _textureWidth, float _textureHeight, bool _originBottomLeft = false, float _width = 1.0f, float _height = 1.0f)
{
if (bgfx::checkAvailTransientVertexBuffer(3, PosColorTexCoord0Vertex::ms_decl) )
{
bgfx::TransientVertexBuffer vb;
bgfx::allocTransientVertexBuffer(&vb, 3, PosColorTexCoord0Vertex::ms_decl);
PosColorTexCoord0Vertex* vertex = (PosColorTexCoord0Vertex*)vb.data;
const float zz = 0.0f;
const float minx = -_width;
const float maxx = _width;
const float miny = 0.0f;
const float maxy = _height*2.0f;
const float texelHalfW = s_texelHalf/_textureWidth;
const float texelHalfH = s_texelHalf/_textureHeight;
const float minu = -1.0f + texelHalfW;
const float maxu = 1.0f + texelHalfW;
float minv = texelHalfH;
float maxv = 2.0f + texelHalfH;
if (_originBottomLeft)
{
std::swap(minv, maxv);
minv -= 1.0f;
maxv -= 1.0f;
}
vertex[0].m_x = minx;
vertex[0].m_y = miny;
vertex[0].m_z = zz;
vertex[0].m_rgba = 0xffffffff;
vertex[0].m_u = minu;
vertex[0].m_v = minv;
vertex[1].m_x = maxx;
vertex[1].m_y = miny;
vertex[1].m_z = zz;
vertex[1].m_rgba = 0xffffffff;
vertex[1].m_u = maxu;
vertex[1].m_v = minv;
vertex[2].m_x = maxx;
vertex[2].m_y = maxy;
vertex[2].m_z = zz;
vertex[2].m_rgba = 0xffffffff;
vertex[2].m_u = maxu;
vertex[2].m_v = maxv;
bgfx::setVertexBuffer(&vb);
}
}
void setOffsets2x2Lum(bgfx::UniformHandle _handle, uint32_t _width, uint32_t _height)
{
float offsets[16][4];
float du = 1.0f/_width;
float dv = 1.0f/_height;
uint32_t num = 0;
for (uint32_t yy = 0; yy < 3; ++yy)
{
for (uint32_t xx = 0; xx < 3; ++xx)
{
offsets[num][0] = (xx - s_texelHalf) * du;
offsets[num][1] = (yy - s_texelHalf) * du;
++num;
}
}
bgfx::setUniform(_handle, offsets, num);
}
void setOffsets4x4Lum(bgfx::UniformHandle _handle, uint32_t _width, uint32_t _height)
{
float offsets[16][4];
float du = 1.0f/_width;
float dv = 1.0f/_height;
uint32_t num = 0;
for (uint32_t yy = 0; yy < 4; ++yy)
{
for (uint32_t xx = 0; xx < 4; ++xx)
{
offsets[num][0] = (xx - 1.0f - s_texelHalf) * du;
offsets[num][1] = (yy - 1.0f - s_texelHalf) * du;
++num;
}
}
bgfx::setUniform(_handle, offsets, num);
}
inline float square(float _x)
{
return _x*_x;
}
int _main_(int _argc, char** _argv)
{
PosColorTexCoord0Vertex::init();
uint32_t width = 1280;
uint32_t height = 720;
uint32_t debug = BGFX_DEBUG_TEXT;
uint32_t reset = BGFX_RESET_NONE;
bgfx::init();
bgfx::reset(width, height);
// Enable debug text.
bgfx::setDebug(debug);
// Set view 0 clear state.
bgfx::setViewClear(0
, BGFX_CLEAR_COLOR_BIT|BGFX_CLEAR_DEPTH_BIT
, 0x303030ff
, 1.0f
, 0
);
// Setup root path for binary shaders. Shader binaries are different
// for each renderer.
switch (bgfx::getRendererType() )
{
default:
case bgfx::RendererType::Direct3D9:
s_shaderPath = "shaders/dx9/";
s_texelHalf = 0.5f;
break;
case bgfx::RendererType::Direct3D11:
s_shaderPath = "shaders/dx11/";
break;
case bgfx::RendererType::OpenGL:
s_shaderPath = "shaders/glsl/";
s_flipV = true;
break;
case bgfx::RendererType::OpenGLES2:
case bgfx::RendererType::OpenGLES3:
s_shaderPath = "shaders/gles/";
s_flipV = true;
break;
}
const bgfx::Memory* mem;
mem = loadTexture("uffizi.dds");
bgfx::TextureHandle uffizi = bgfx::createTexture(mem);
bgfx::UniformHandle u_time = bgfx::createUniform("u_time", bgfx::UniformType::Uniform1f);
bgfx::UniformHandle u_texCube = bgfx::createUniform("u_texCube", bgfx::UniformType::Uniform1i);
bgfx::UniformHandle u_texColor = bgfx::createUniform("u_texColor", bgfx::UniformType::Uniform1i);
bgfx::UniformHandle u_texLum = bgfx::createUniform("u_texLum", bgfx::UniformType::Uniform1i);
bgfx::UniformHandle u_texBlur = bgfx::createUniform("u_texBlur", bgfx::UniformType::Uniform1i);
bgfx::UniformHandle u_mtx = bgfx::createUniform("u_mtx", bgfx::UniformType::Uniform4x4fv);
bgfx::UniformHandle u_tonemap = bgfx::createUniform("u_tonemap", bgfx::UniformType::Uniform4fv);
bgfx::UniformHandle u_offset = bgfx::createUniform("u_offset", bgfx::UniformType::Uniform4fv, 16);
bgfx::UniformHandle u_weight = bgfx::createUniform("u_weight", bgfx::UniformType::Uniform4fv, 16);
bgfx::ProgramHandle skyProgram = loadProgram("vs_hdr_skybox", "fs_hdr_skybox");
bgfx::ProgramHandle lumProgram = loadProgram("vs_hdr_lum", "fs_hdr_lum");
bgfx::ProgramHandle lumAvgProgram = loadProgram("vs_hdr_lumavg", "fs_hdr_lumavg");
bgfx::ProgramHandle blurProgram = loadProgram("vs_hdr_blur", "fs_hdr_blur");
bgfx::ProgramHandle brightProgram = loadProgram("vs_hdr_bright", "fs_hdr_bright");
bgfx::ProgramHandle meshProgram = loadProgram("vs_hdr_mesh", "fs_hdr_mesh");
bgfx::ProgramHandle tonemapProgram = loadProgram("vs_hdr_tonemap", "fs_hdr_tonemap");
Mesh mesh;
mesh.load("meshes/bunny.bin");
bgfx::RenderTargetHandle rt = bgfx::createRenderTarget(width, height, BGFX_RENDER_TARGET_COLOR_RGBA|BGFX_RENDER_TARGET_DEPTH|BGFX_RENDER_TARGET_MSAA_X8);
bgfx::RenderTargetHandle lum[5];
lum[0] = bgfx::createRenderTarget(128, 128, BGFX_RENDER_TARGET_COLOR_RGBA);
lum[1] = bgfx::createRenderTarget( 64, 64, BGFX_RENDER_TARGET_COLOR_RGBA);
lum[2] = bgfx::createRenderTarget( 16, 16, BGFX_RENDER_TARGET_COLOR_RGBA);
lum[3] = bgfx::createRenderTarget( 4, 4, BGFX_RENDER_TARGET_COLOR_RGBA);
lum[4] = bgfx::createRenderTarget( 1, 1, BGFX_RENDER_TARGET_COLOR_RGBA);
bgfx::RenderTargetHandle bright;
bright = bgfx::createRenderTarget(width/2, height/2, BGFX_RENDER_TARGET_COLOR_RGBA);
bgfx::RenderTargetHandle blur;
blur = bgfx::createRenderTarget(width/8, height/8, BGFX_RENDER_TARGET_COLOR_RGBA);
entry::setWindowSize(1600, 900);
uint32_t oldWidth = 0;
uint32_t oldHeight = 0;
while (!processEvents(width, height, debug, reset) )
{
if (oldWidth != width
|| oldHeight != height)
{
// Recreate variable size render targets when resolution changes.
oldWidth = width;
oldHeight = height;
bgfx::destroyRenderTarget(rt);
bgfx::destroyRenderTarget(bright);
bgfx::destroyRenderTarget(blur);
rt = bgfx::createRenderTarget(width, height, BGFX_RENDER_TARGET_COLOR_RGBA|BGFX_RENDER_TARGET_DEPTH|BGFX_RENDER_TARGET_MSAA_X8);
bright = bgfx::createRenderTarget(width/2, height/2, BGFX_RENDER_TARGET_COLOR_RGBA);
blur = bgfx::createRenderTarget(width/8, height/8, BGFX_RENDER_TARGET_COLOR_RGBA);
}
// This dummy draw call is here to make sure that view 0 is cleared
// if no other draw calls are submitted to view 0.
bgfx::submit(0);
int64_t now = bx::getHPCounter();
static int64_t last = now;
const int64_t frameTime = now - last;
last = now;
const double freq = double(bx::getHPFrequency() );
const double toMs = 1000.0/freq;
float time = (float)(now/freq);
bgfx::setUniform(u_time, &time);
// Use debug font to print information about this example.
bgfx::dbgTextClear();
bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/09-hdr");
bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Using multiple views and render targets.");
bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
// Set views.
bgfx::setViewRectMask(0x1f, 0, 0, width, height);
bgfx::setViewRenderTargetMask(0x3, rt);
bgfx::setViewRect(2, 0, 0, 128, 128);
bgfx::setViewRenderTarget(2, lum[0]);
bgfx::setViewRect(3, 0, 0, 64, 64);
bgfx::setViewRenderTarget(3, lum[1]);
bgfx::setViewRect(4, 0, 0, 16, 16);
bgfx::setViewRenderTarget(4, lum[2]);
bgfx::setViewRect(5, 0, 0, 4, 4);
bgfx::setViewRenderTarget(5, lum[3]);
bgfx::setViewRect(6, 0, 0, 1, 1);
bgfx::setViewRenderTarget(6, lum[4]);
bgfx::setViewRect(7, 0, 0, width/2, height/2);
bgfx::setViewRenderTarget(7, bright);
bgfx::setViewRect(8, 0, 0, width/8, height/8);
bgfx::setViewRenderTarget(8, blur);
bgfx::setViewRect(9, 0, 0, width, height);
float view[16];
float proj[16];
mtxIdentity(view);
mtxOrtho(proj, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 100.0f);
// Set view and projection matrix for view 0.
bgfx::setViewTransformMask(0
|(1<<0)
|(1<<2)
|(1<<3)
|(1<<4)
|(1<<5)
|(1<<6)
|(1<<7)
|(1<<8)
|(1<<9)
, view
, proj
);
float at[3] = { 0.0f, 1.0f, 0.0f };
float eye[3] = { 0.0f, 1.0f, -2.5f };
float mtx[16];
mtxRotateXY(mtx
, 0.0f
, time*0.37f
);
float temp[4];
vec3MulMtx(temp, eye, mtx);
mtxLookAt(view, temp, at);
mtxProj(proj, 60.0f, 16.0f/9.0f, 0.1f, 100.0f);
// Set view and projection matrix for view 1.
bgfx::setViewTransformMask(1<<1, view, proj);
bgfx::setUniform(u_mtx, mtx);
// Render skybox into view 0.
bgfx::setTexture(0, u_texCube, uffizi);
bgfx::setProgram(skyProgram);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad( (float)width, (float)height, true);
bgfx::submit(0);
// Render mesh into view 1
bgfx::setTexture(0, u_texCube, uffizi);
mesh.submit(1, meshProgram, NULL);
// Calculate luminance.
setOffsets2x2Lum(u_offset, 128, 128);
bgfx::setTexture(0, u_texColor, rt);
bgfx::setProgram(lumProgram);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad(128.0f, 128.0f, s_flipV);
bgfx::submit(2);
// Downscale luminance 0.
setOffsets4x4Lum(u_offset, 128, 128);
bgfx::setTexture(0, u_texColor, lum[0]);
bgfx::setProgram(lumAvgProgram);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad(64.0f, 64.0f, s_flipV);
bgfx::submit(3);
// Downscale luminance 1.
setOffsets4x4Lum(u_offset, 64, 64);
bgfx::setTexture(0, u_texColor, lum[1]);
bgfx::setProgram(lumAvgProgram);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad(16.0f, 16.0f, s_flipV);
bgfx::submit(4);
// Downscale luminance 2.
setOffsets4x4Lum(u_offset, 16, 16);
bgfx::setTexture(0, u_texColor, lum[2]);
bgfx::setProgram(lumAvgProgram);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad(4.0f, 4.0f, s_flipV);
bgfx::submit(5);
// Downscale luminance 3.
setOffsets4x4Lum(u_offset, 4, 4);
bgfx::setTexture(0, u_texColor, lum[3]);
bgfx::setProgram(lumAvgProgram);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad(1.0f, 1.0f, s_flipV);
bgfx::submit(6);
float tonemap[4] = { 0.18f, square(1.1f), 1.5f, 0.0f };
bgfx::setUniform(u_tonemap, tonemap);
// Bright pass treshold is tonemap[3].
setOffsets4x4Lum(u_offset, width/2, height/2);
bgfx::setTexture(0, u_texColor, rt);
bgfx::setTexture(1, u_texLum, lum[4]);
bgfx::setProgram(brightProgram);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad( (float)width/2.0f, (float)height/2.0f, s_flipV);
bgfx::submit(7);
// Blur bright pass vertically.
bgfx::setTexture(0, u_texColor, bright);
bgfx::setProgram(blurProgram);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad( (float)width/8.0f, (float)height/8.0f, s_flipV);
bgfx::submit(8);
// Blur bright pass horizontally, do tonemaping and combine.
bgfx::setTexture(0, u_texColor, rt);
bgfx::setTexture(1, u_texLum, lum[4]);
bgfx::setTexture(2, u_texBlur, blur);
bgfx::setProgram(tonemapProgram);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad( (float)width, (float)height, s_flipV);
bgfx::submit(9);
// Advance to next frame. Rendering thread will be kicked to
// process submitted rendering primitives.
bgfx::frame();
}
// Cleanup.
mesh.unload();
bgfx::destroyRenderTarget(lum[0]);
bgfx::destroyRenderTarget(lum[1]);
bgfx::destroyRenderTarget(lum[2]);
bgfx::destroyRenderTarget(lum[3]);
bgfx::destroyRenderTarget(lum[4]);
bgfx::destroyRenderTarget(bright);
bgfx::destroyRenderTarget(blur);
bgfx::destroyRenderTarget(rt);
bgfx::destroyProgram(meshProgram);
bgfx::destroyProgram(skyProgram);
bgfx::destroyProgram(tonemapProgram);
bgfx::destroyProgram(lumProgram);
bgfx::destroyProgram(lumAvgProgram);
bgfx::destroyProgram(blurProgram);
bgfx::destroyProgram(brightProgram);
bgfx::destroyTexture(uffizi);
bgfx::destroyUniform(u_time);
bgfx::destroyUniform(u_texCube);
bgfx::destroyUniform(u_texColor);
bgfx::destroyUniform(u_texLum);
bgfx::destroyUniform(u_texBlur);
bgfx::destroyUniform(u_mtx);
bgfx::destroyUniform(u_tonemap);
bgfx::destroyUniform(u_offset);
bgfx::destroyUniform(u_weight);
// Shutdown bgfx.
bgfx::shutdown();
return 0;
}

17
examples/09-hdr/makefile Normal file
View File

@ -0,0 +1,17 @@
#
# Copyright 2011-2013 Branimir Karadzic. All rights reserved.
# License: http://www.opensource.org/licenses/BSD-2-Clause
#
BGFX_DIR=../..
RUNTIME_DIR=$(BGFX_DIR)/examples/runtime
BUILD_DIR=../../.build
include $(BGFX_DIR)/premake/shader.mk
rebuild:
@make -s --no-print-directory TARGET=0 clean all
@make -s --no-print-directory TARGET=1 clean all
@make -s --no-print-directory TARGET=2 clean all
@make -s --no-print-directory TARGET=3 clean all
@make -s --no-print-directory TARGET=4 clean all

View File

@ -0,0 +1,14 @@
vec4 v_color0 : COLOR0 = vec4(1.0, 0.0, 0.0, 1.0);
vec3 v_normal : NORMAL = vec3(0.0, 0.0, 1.0);
vec2 v_texcoord0 : TEXCOORD0 = vec2(0.0, 0.0);
vec4 v_texcoord1 : TEXCOORD1 = vec4(0.0, 0.0, 0.0, 0.0);
vec4 v_texcoord2 : TEXCOORD2 = vec4(0.0, 0.0, 0.0, 0.0);
vec4 v_texcoord3 : TEXCOORD3 = vec4(0.0, 0.0, 0.0, 0.0);
vec4 v_texcoord4 : TEXCOORD4 = vec4(0.0, 0.0, 0.0, 0.0);
vec3 v_pos : TEXCOORD5 = vec3(0.0, 0.0, 0.0);
vec3 v_view : TEXCOORD6 = vec3(0.0, 0.0, 0.0);
vec3 a_position : POSITION;
vec4 a_color0 : COLOR0;
vec2 a_texcoord0 : TEXCOORD0;
vec3 a_normal : NORMAL;

View File

@ -0,0 +1,27 @@
$input a_position, a_texcoord0
$output v_texcoord0, v_texcoord1, v_texcoord2, v_texcoord3, v_texcoord4
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "../common/common.sh"
void main()
{
gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0) );
v_texcoord0 = a_texcoord0;
v_texcoord1 = vec4(a_texcoord0.x, a_texcoord0.y - u_viewTexel.y*1.0,
a_texcoord0.x, a_texcoord0.y + u_viewTexel.y*1.0
);
v_texcoord2 = vec4(a_texcoord0.x, a_texcoord0.y - u_viewTexel.y*2.0,
a_texcoord0.x, a_texcoord0.y + u_viewTexel.y*2.0
);
v_texcoord3 = vec4(a_texcoord0.x, a_texcoord0.y - u_viewTexel.y*3.0,
a_texcoord0.x, a_texcoord0.y + u_viewTexel.y*3.0
);
v_texcoord4 = vec4(a_texcoord0.x, a_texcoord0.y - u_viewTexel.y*4.0,
a_texcoord0.x, a_texcoord0.y + u_viewTexel.y*4.0
);
}

View File

@ -0,0 +1,15 @@
$input a_position, a_texcoord0
$output v_texcoord0
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "../common/common.sh"
void main()
{
gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0) );
v_texcoord0 = a_texcoord0;
}

View File

@ -0,0 +1,15 @@
$input a_position, a_texcoord0
$output v_texcoord0
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "../common/common.sh"
void main()
{
gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0) );
v_texcoord0 = a_texcoord0;
}

View File

@ -0,0 +1,15 @@
$input a_position, a_texcoord0
$output v_texcoord0
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "../common/common.sh"
void main()
{
gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0) );
v_texcoord0 = a_texcoord0;
}

View File

@ -0,0 +1,24 @@
$input a_position, a_normal
$output v_pos, v_view, v_normal
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "../common/common.sh"
uniform float u_time;
void main()
{
vec3 pos = a_position;
vec3 normal = a_normal.xyz*2.0 - 1.0;
gl_Position = mul(u_modelViewProj, vec4(pos, 1.0) );
v_pos = gl_Position.xyz;
v_view = mul(u_modelView, vec4(pos, 1.0) ).xyz;
v_normal = mul(u_modelView, vec4(normal, 0.0) ).xyz;
}

View File

@ -0,0 +1,15 @@
$input a_position, a_texcoord0
$output v_texcoord0
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "../common/common.sh"
void main()
{
gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0) );
v_texcoord0 = a_texcoord0;
}

View File

@ -0,0 +1,29 @@
$input a_position, a_texcoord0
$output v_texcoord0, v_texcoord1, v_texcoord2, v_texcoord3, v_texcoord4
/*
* Copyright 2011-2013 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "../common/common.sh"
void main()
{
float offset = u_viewTexel.x*8.0;
gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0) );
v_texcoord0 = a_texcoord0;
v_texcoord1 = vec4(a_texcoord0.x - offset*1.0, a_texcoord0.y,
a_texcoord0.x + offset*1.0, a_texcoord0.y
);
v_texcoord2 = vec4(a_texcoord0.x - offset*2.0, a_texcoord0.y,
a_texcoord0.x + offset*2.0, a_texcoord0.y
);
v_texcoord3 = vec4(a_texcoord0.x - offset*3.0, a_texcoord0.y,
a_texcoord0.x + offset*3.0, a_texcoord0.y
);
v_texcoord4 = vec4(a_texcoord0.x - offset*4.0, a_texcoord0.y,
a_texcoord0.x + offset*4.0, a_texcoord0.y
);
}

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@ -22,10 +22,6 @@ local BGFX_BUILD_DIR = (BGFX_DIR .. ".build/")
local BGFX_THIRD_PARTY_DIR = (BGFX_DIR .. "3rdparty/") local BGFX_THIRD_PARTY_DIR = (BGFX_DIR .. "3rdparty/")
BX_DIR = (BGFX_DIR .. "../bx/") BX_DIR = (BGFX_DIR .. "../bx/")
defines {
"BX_CONFIG_ENABLE_MSVC_LEVEL4_WARNINGS=1"
}
dofile (BX_DIR .. "premake/toolchain.lua") dofile (BX_DIR .. "premake/toolchain.lua")
toolchain(BGFX_BUILD_DIR, BGFX_THIRD_PARTY_DIR) toolchain(BGFX_BUILD_DIR, BGFX_THIRD_PARTY_DIR)
@ -101,6 +97,7 @@ exampleProject("05-instancing", "5d3da660-1105-11e2-aece-71e4dd6a022f")
exampleProject("06-bump", "ffb23e6c-167b-11e2-81df-94c4dd6a022f") exampleProject("06-bump", "ffb23e6c-167b-11e2-81df-94c4dd6a022f")
exampleProject("07-callback", "acc53bbc-52f0-11e2-9781-ad8edd4b7d02") exampleProject("07-callback", "acc53bbc-52f0-11e2-9781-ad8edd4b7d02")
exampleProject("08-update", "e011e246-5862-11e2-b202-b7cb257a7926") exampleProject("08-update", "e011e246-5862-11e2-b202-b7cb257a7926")
exampleProject("09-hdr", "969a4626-67ee-11e2-9726-9023267a7926")
dofile "makedisttex.lua" dofile "makedisttex.lua"
dofile "shaderc.lua" dofile "shaderc.lua"
dofile "texturec.lua" dofile "texturec.lua"