659 lines
17 KiB
C++
659 lines
17 KiB
C++
/*
|
|
* Copyright 2018 Eric Arnebäck. All rights reserved.
|
|
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
|
|
|
|
* The bloom effect was based on the following presentation:
|
|
* http://www.iryoku.com/next-generation-post-processing-in-call-of-duty-advanced-warfare
|
|
*/
|
|
|
|
#include "common.h"
|
|
#include "bgfx_utils.h"
|
|
#include "imgui/imgui.h"
|
|
#include "camera.h"
|
|
#include "bounds.h"
|
|
|
|
namespace
|
|
{
|
|
|
|
// pass that render the geometry of the boxes.
|
|
#define RENDER_PASS_GEOMETRY_ID 0
|
|
|
|
// the first downsample pass.
|
|
#define RENDER_PASS_DOWNSAMPLE0_ID 1
|
|
|
|
// the first upsample pass.
|
|
#define RENDER_PASS_UPSAMPLE0_ID ((TEX_CHAIN_LEN-1) + 1)
|
|
|
|
// the final pass the combines the bloom with the g-buffer.
|
|
#define RENDER_PASS_COMBINE_ID ((TEX_CHAIN_LEN-1) + 1 + (TEX_CHAIN_LEN-1))
|
|
|
|
// number of downsampled and then upsampled textures(used for bloom.)
|
|
#define TEX_CHAIN_LEN 5
|
|
|
|
static float s_texelHalf = 0.0f;
|
|
|
|
struct PosVertex
|
|
{
|
|
float m_x;
|
|
float m_y;
|
|
float m_z;
|
|
|
|
static void init()
|
|
{
|
|
ms_decl
|
|
.begin()
|
|
.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float)
|
|
.end();
|
|
}
|
|
|
|
static bgfx::VertexDecl ms_decl;
|
|
};
|
|
|
|
bgfx::VertexDecl PosVertex::ms_decl;
|
|
|
|
struct PosTexCoord0Vertex
|
|
{
|
|
float m_x;
|
|
float m_y;
|
|
float m_z;
|
|
float m_u;
|
|
float m_v;
|
|
|
|
static void init()
|
|
{
|
|
ms_decl
|
|
.begin()
|
|
.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float)
|
|
.add(bgfx::Attrib::TexCoord0, 2, bgfx::AttribType::Float)
|
|
.end();
|
|
}
|
|
|
|
static bgfx::VertexDecl ms_decl;
|
|
};
|
|
|
|
bgfx::VertexDecl PosTexCoord0Vertex::ms_decl;
|
|
|
|
constexpr float cs = 0.29f;
|
|
|
|
static PosVertex s_cubeVertices[24] =
|
|
{
|
|
{-cs, cs, cs },
|
|
{ cs, cs, cs },
|
|
{-cs, -cs, cs },
|
|
{ cs, -cs, cs },
|
|
{-cs, cs, -cs },
|
|
{ cs, cs, -cs },
|
|
{-cs, -cs, -cs },
|
|
{ cs, -cs, -cs },
|
|
{-cs, cs, cs },
|
|
{ cs, cs, cs },
|
|
{-cs, cs, -cs },
|
|
{ cs, cs, -cs },
|
|
{-cs, -cs, cs },
|
|
{ cs, -cs, cs },
|
|
{-cs, -cs, -cs },
|
|
{ cs, -cs, -cs },
|
|
{ cs, -cs, cs },
|
|
{ cs, cs, cs },
|
|
{ cs, -cs, -cs },
|
|
{ cs, cs, -cs },
|
|
{-cs, -cs, cs },
|
|
{-cs, cs, cs },
|
|
{-cs, -cs, -cs },
|
|
{-cs, cs, -cs },
|
|
};
|
|
|
|
static const uint16_t s_cubeIndices[36] =
|
|
{
|
|
0, 2, 1,
|
|
1, 2, 3,
|
|
4, 5, 6,
|
|
5, 7, 6,
|
|
|
|
8, 10, 9,
|
|
9, 10, 11,
|
|
12, 13, 14,
|
|
13, 15, 14,
|
|
|
|
16, 18, 17,
|
|
17, 18, 19,
|
|
20, 21, 22,
|
|
21, 23, 22,
|
|
};
|
|
|
|
void screenSpaceQuad(float _textureWidth, float _textureHeight, float _texelHalf, bool _originBottomLeft, float _width = 1.0f, float _height = 1.0f)
|
|
{
|
|
if (3 == bgfx::getAvailTransientVertexBuffer(3, PosTexCoord0Vertex::ms_decl) )
|
|
{
|
|
bgfx::TransientVertexBuffer vb;
|
|
bgfx::allocTransientVertexBuffer(&vb, 3, PosTexCoord0Vertex::ms_decl);
|
|
PosTexCoord0Vertex* vertex = (PosTexCoord0Vertex*)vb.data;
|
|
|
|
const float minx = -_width;
|
|
const float maxx = _width;
|
|
const float miny = 0.0f;
|
|
const float maxy = _height*2.0f;
|
|
|
|
const float texelHalfW = _texelHalf/_textureWidth;
|
|
const float texelHalfH = _texelHalf/_textureHeight;
|
|
const float minu = -1.0f + texelHalfW;
|
|
const float maxu = 1.0f + texelHalfH;
|
|
|
|
const float zz = 0.0f;
|
|
|
|
float minv = texelHalfH;
|
|
float maxv = 2.0f + texelHalfH;
|
|
|
|
if (_originBottomLeft)
|
|
{
|
|
float temp = minv;
|
|
minv = maxv;
|
|
maxv = temp;
|
|
|
|
minv -= 1.0f;
|
|
maxv -= 1.0f;
|
|
}
|
|
|
|
vertex[0].m_x = minx;
|
|
vertex[0].m_y = miny;
|
|
vertex[0].m_z = zz;
|
|
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_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_u = maxu;
|
|
vertex[2].m_v = maxv;
|
|
|
|
bgfx::setVertexBuffer(0, &vb);
|
|
}
|
|
}
|
|
|
|
class ExampleDeferred : public entry::AppI
|
|
{
|
|
public:
|
|
ExampleDeferred(const char* _name, const char* _description)
|
|
: entry::AppI(_name, _description)
|
|
{
|
|
}
|
|
|
|
void init(int32_t _argc, const char* const* _argv, uint32_t _width, uint32_t _height) override
|
|
{
|
|
Args args(_argc, _argv);
|
|
|
|
m_width = _width;
|
|
m_height = _height;
|
|
m_debug = BGFX_DEBUG_TEXT;
|
|
m_reset = BGFX_RESET_VSYNC;
|
|
|
|
bgfx::Init init;
|
|
|
|
init.type = args.m_type;
|
|
init.vendorId = args.m_pciId;
|
|
init.resolution.width = m_width;
|
|
init.resolution.height = m_height;
|
|
init.resolution.reset = m_reset;
|
|
bgfx::init(init);
|
|
|
|
// Enable m_debug text.
|
|
bgfx::setDebug(m_debug);
|
|
|
|
// Set palette color for index 0
|
|
bgfx::setPaletteColor(0, UINT32_C(0x00000000) );
|
|
|
|
// Set geometry pass view clear state.
|
|
bgfx::setViewClear(RENDER_PASS_GEOMETRY_ID
|
|
, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
|
|
, 1.0f
|
|
, 0
|
|
, 0
|
|
, 0
|
|
);
|
|
|
|
// we need to clear the textures in the chain, before downsampling into them.
|
|
for (uint16_t ii = 0; ii < TEX_CHAIN_LEN-1; ++ii)
|
|
{
|
|
bgfx::setViewClear(RENDER_PASS_DOWNSAMPLE0_ID + ii
|
|
, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH
|
|
, 1.0f
|
|
, 0
|
|
, 0
|
|
);
|
|
}
|
|
|
|
// Create vertex stream declaration.
|
|
PosVertex::init();
|
|
PosTexCoord0Vertex::init();
|
|
|
|
// Create static vertex buffer.
|
|
m_vbh = bgfx::createVertexBuffer(
|
|
bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) )
|
|
, PosVertex::ms_decl
|
|
);
|
|
|
|
m_ibh = bgfx::createIndexBuffer(bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) ) );
|
|
|
|
s_albedo = bgfx::createUniform("s_albedo", bgfx::UniformType::Int1);
|
|
s_tex = bgfx::createUniform("s_tex", bgfx::UniformType::Int1);
|
|
s_depth = bgfx::createUniform("s_depth", bgfx::UniformType::Int1);
|
|
s_light = bgfx::createUniform("s_light", bgfx::UniformType::Int1);
|
|
u_pixelSize = bgfx::createUniform("u_pixelSize", bgfx::UniformType::Vec4);
|
|
u_intensity = bgfx::createUniform("u_intensity", bgfx::UniformType::Vec4);
|
|
u_color = bgfx::createUniform("u_color", bgfx::UniformType::Vec4);
|
|
u_mtx = bgfx::createUniform("u_mtx", bgfx::UniformType::Mat4);
|
|
|
|
// Create program from shaders.
|
|
m_geomProgram = loadProgram("vs_albedo_output", "fs_albedo_output");
|
|
m_downsampleProgram = loadProgram("vs_fullscreen", "fs_downsample");
|
|
m_upsampleProgram = loadProgram("vs_fullscreen", "fs_upsample");
|
|
m_combineProgram = loadProgram("vs_fullscreen", "fs_bloom_combine");
|
|
|
|
m_gbufferTex[0].idx = bgfx::kInvalidHandle;
|
|
m_gbufferTex[1].idx = bgfx::kInvalidHandle;
|
|
m_gbufferTex[2].idx = bgfx::kInvalidHandle;
|
|
m_gbuffer.idx = bgfx::kInvalidHandle;
|
|
|
|
for (int ii = 0; ii < TEX_CHAIN_LEN; ++ii)
|
|
{
|
|
m_texChainFb[ii].idx = bgfx::kInvalidHandle;
|
|
m_texChainTex[ii].idx = bgfx::kInvalidHandle;
|
|
}
|
|
|
|
// Imgui.
|
|
imguiCreate();
|
|
|
|
m_timeOffset = bx::getHPCounter();
|
|
const bgfx::RendererType::Enum renderer = bgfx::getRendererType();
|
|
s_texelHalf = bgfx::RendererType::Direct3D9 == renderer ? 0.5f : 0.0f;
|
|
|
|
// Get renderer capabilities info.
|
|
m_caps = bgfx::getCaps();
|
|
|
|
m_oldWidth = 0;
|
|
m_oldHeight = 0;
|
|
m_oldReset = m_reset;
|
|
|
|
m_scrollArea = 0;
|
|
|
|
cameraCreate();
|
|
|
|
const float initialPos[3] = { 0.0f, 0.0f, -15.0f };
|
|
cameraSetPosition(initialPos);
|
|
cameraSetVerticalAngle(0.0f);
|
|
}
|
|
|
|
virtual int shutdown() override
|
|
{
|
|
// Cleanup.
|
|
cameraDestroy();
|
|
imguiDestroy();
|
|
|
|
if (bgfx::isValid(m_gbuffer) )
|
|
{
|
|
bgfx::destroy(m_gbuffer);
|
|
}
|
|
|
|
for (int ii = 0; ii < TEX_CHAIN_LEN; ++ii) {
|
|
bgfx::destroy(m_texChainTex[ii]);
|
|
bgfx::destroy(m_texChainFb[ii]);
|
|
|
|
}
|
|
|
|
bgfx::destroy(m_ibh);
|
|
bgfx::destroy(m_vbh);
|
|
|
|
bgfx::destroy(m_geomProgram);
|
|
bgfx::destroy(m_downsampleProgram);
|
|
bgfx::destroy(m_upsampleProgram);
|
|
bgfx::destroy(m_combineProgram);
|
|
|
|
bgfx::destroy(s_albedo);
|
|
bgfx::destroy(s_tex);
|
|
bgfx::destroy(s_depth);
|
|
bgfx::destroy(s_light);
|
|
|
|
bgfx::destroy(u_mtx);
|
|
bgfx::destroy(u_pixelSize);
|
|
bgfx::destroy(u_intensity);
|
|
bgfx::destroy(u_color);
|
|
|
|
// Shutdown bgfx.
|
|
bgfx::shutdown();
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool update() override
|
|
{
|
|
if (!entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState) )
|
|
{
|
|
imguiBeginFrame(
|
|
m_mouseState.m_mx
|
|
, m_mouseState.m_my
|
|
, (m_mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
|
|
| (m_mouseState.m_buttons[entry::MouseButton::Right ] ? IMGUI_MBUT_RIGHT : 0)
|
|
| (m_mouseState.m_buttons[entry::MouseButton::Middle] ? IMGUI_MBUT_MIDDLE : 0)
|
|
, m_mouseState.m_mz
|
|
, uint16_t(m_width)
|
|
, uint16_t(m_height)
|
|
);
|
|
|
|
showExampleDialog(this);
|
|
|
|
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 float deltaTime = float(frameTime/freq);
|
|
|
|
float time = (float)( (now-m_timeOffset)/freq);
|
|
|
|
if (2 > m_caps->limits.maxFBAttachments)
|
|
{
|
|
// When multiple render targets (MRT) is not supported by GPU,
|
|
// implement alternative code path that doesn't use MRT.
|
|
bool blink = uint32_t(time*3.0f)&1;
|
|
bgfx::dbgTextPrintf(0, 0, blink ? 0x4f : 0x04, " MRT not supported by GPU. ");
|
|
|
|
// Set view 0 default viewport.
|
|
bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );
|
|
|
|
// 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::touch(0);
|
|
}
|
|
else
|
|
{
|
|
if (m_oldWidth != m_width
|
|
|| m_oldHeight != m_height
|
|
|| m_oldReset != m_reset
|
|
|| !bgfx::isValid(m_gbuffer) )
|
|
{
|
|
// Recreate variable size render targets when resolution changes.
|
|
m_oldWidth = m_width;
|
|
m_oldHeight = m_height;
|
|
m_oldReset = m_reset;
|
|
|
|
if (bgfx::isValid(m_gbuffer) )
|
|
{
|
|
bgfx::destroy(m_gbuffer);
|
|
}
|
|
|
|
const uint64_t tsFlags = 0
|
|
| BGFX_TEXTURE_RT
|
|
| BGFX_SAMPLER_U_CLAMP
|
|
| BGFX_SAMPLER_V_CLAMP
|
|
;
|
|
|
|
for (int ii = 0; ii < TEX_CHAIN_LEN; ++ii) {
|
|
|
|
if (bgfx::isValid(m_texChainFb[ii]))
|
|
{
|
|
bgfx::destroy(m_texChainFb[ii]);
|
|
}
|
|
|
|
m_texChainTex[ii] = bgfx::createTexture2D(
|
|
(uint16_t)m_width / (uint16_t)bx::pow(2.0f, ii)
|
|
, (uint16_t)m_height / (uint16_t)bx::pow(2.0f, ii)
|
|
, false
|
|
, 1
|
|
, bgfx::TextureFormat::RGBA32F
|
|
, tsFlags
|
|
);
|
|
m_texChainFb[ii] = bgfx::createFrameBuffer(1, &m_texChainTex[ii], true);
|
|
}
|
|
|
|
m_gbufferTex[0] = bgfx::createTexture2D(uint16_t(m_width), uint16_t(m_height), false, 1, bgfx::TextureFormat::RGBA32F, tsFlags);
|
|
m_gbufferTex[1] = m_texChainTex[0];
|
|
m_gbufferTex[2] = bgfx::createTexture2D(uint16_t(m_width), uint16_t(m_height), false, 1, bgfx::TextureFormat::D24S8, tsFlags);
|
|
m_gbuffer = bgfx::createFrameBuffer(BX_COUNTOF(m_gbufferTex), m_gbufferTex, true);
|
|
}
|
|
|
|
ImGui::SetNextWindowPos(
|
|
ImVec2(m_width - m_width / 5.0f - 10.0f, 10.0f)
|
|
, ImGuiCond_FirstUseEver
|
|
);
|
|
ImGui::SetNextWindowSize(
|
|
ImVec2(m_width / 5.0f, m_height / 6.0f)
|
|
, ImGuiCond_FirstUseEver
|
|
);
|
|
ImGui::Begin("Settings"
|
|
, NULL
|
|
, 0
|
|
);
|
|
|
|
ImGui::SliderFloat("intensity", &m_intensity, 0.0f, 3.0f);
|
|
|
|
ImGui::End();
|
|
|
|
// Update camera.
|
|
cameraUpdate(deltaTime, m_mouseState);
|
|
|
|
float view[16];
|
|
cameraGetViewMtx(view);
|
|
|
|
float proj[16];
|
|
// Setup views
|
|
{
|
|
bgfx::setViewRect(RENDER_PASS_GEOMETRY_ID, 0, 0, uint16_t(m_width), uint16_t(m_height) );
|
|
|
|
for (uint16_t ii = 0; ii < TEX_CHAIN_LEN-1; ++ii)
|
|
{
|
|
bgfx::setViewRect(RENDER_PASS_DOWNSAMPLE0_ID + ii, 0, 0
|
|
, uint16_t(m_width / (uint16_t)bx::pow(2.0f, ii+1) )
|
|
, uint16_t(m_height / (uint16_t)bx::pow(2.0f, ii+1) )
|
|
);
|
|
}
|
|
|
|
for (uint16_t ii = 0; ii < TEX_CHAIN_LEN-1; ++ii)
|
|
{
|
|
bgfx::setViewRect(RENDER_PASS_UPSAMPLE0_ID + ii, 0, 0
|
|
, uint16_t(m_width / (uint16_t)bx::pow(2.0f, TEX_CHAIN_LEN - ii - 2) )
|
|
, uint16_t(m_height / (uint16_t)bx::pow(2.0f, TEX_CHAIN_LEN - ii - 2) )
|
|
);
|
|
}
|
|
|
|
bx::mtxProj(proj, 60.0f, float(m_width) / float(m_height), 0.1f, 100.0f, m_caps->homogeneousDepth);
|
|
bgfx::setViewFrameBuffer(RENDER_PASS_GEOMETRY_ID, m_gbuffer);
|
|
bgfx::setViewTransform(RENDER_PASS_GEOMETRY_ID, view, proj);
|
|
|
|
bgfx::setViewRect(RENDER_PASS_COMBINE_ID, 0, 0, uint16_t(m_width), uint16_t(m_height));
|
|
|
|
bx::mtxOrtho(proj, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 100.0f, 0.0f, m_caps->homogeneousDepth);
|
|
|
|
for (uint16_t ii = 0; ii < TEX_CHAIN_LEN-1; ++ii)
|
|
{
|
|
bgfx::setViewTransform(RENDER_PASS_DOWNSAMPLE0_ID + ii, NULL, proj);
|
|
bgfx::setViewFrameBuffer(RENDER_PASS_DOWNSAMPLE0_ID + ii, m_texChainFb[ii+1]);
|
|
}
|
|
|
|
for (uint16_t ii = 0; ii < TEX_CHAIN_LEN-1; ++ii)
|
|
{
|
|
bgfx::setViewTransform(RENDER_PASS_UPSAMPLE0_ID + ii, NULL, proj);
|
|
bgfx::setViewFrameBuffer(RENDER_PASS_UPSAMPLE0_ID + ii, m_texChainFb[TEX_CHAIN_LEN - ii - 2]);
|
|
}
|
|
|
|
bgfx::setViewTransform(RENDER_PASS_COMBINE_ID, NULL, proj);
|
|
}
|
|
|
|
const uint32_t dim = 7;
|
|
const int COLS = 5;
|
|
float color[4*COLS] =
|
|
{
|
|
0.0f, 1.0f, 0.0f, 1.0f,
|
|
1.0f, 0.0f, 0.0f, 1.0f,
|
|
0.0f, 0.0f, 1.0f, 1.0f,
|
|
1.0f, 0.0f, 1.0f, 1.0f,
|
|
0.0f, 1.0f, 1.0f, 1.0f,
|
|
};
|
|
|
|
// render a whole bunch of colored cubes to the g-buffer.
|
|
for (uint32_t xx = 0; xx < dim; ++xx)
|
|
{
|
|
bgfx::setUniform(u_color, &color[4 * (xx % COLS) ]);
|
|
|
|
float mtx[16];
|
|
|
|
bx::mtxIdentity(mtx);
|
|
|
|
float t = (float)xx / (float)dim;
|
|
|
|
t += 0.07f * time;
|
|
|
|
float r = bx::sin(0.47f * time * 2.0f * 3.14f) * 1.0f + 1.4f;
|
|
|
|
mtx[12] = bx::sin(t * 2.0f * 3.14f)*r;
|
|
mtx[13] = bx::cos(t * 2.0f * 3.14f)*r;
|
|
mtx[14] = 0.2f * (float)xx / (float)dim;
|
|
|
|
// Set transform for draw call.
|
|
bgfx::setTransform(mtx);
|
|
|
|
// Set vertex and index buffer.
|
|
bgfx::setVertexBuffer(0, m_vbh);
|
|
bgfx::setIndexBuffer(m_ibh);
|
|
|
|
// Set render states.
|
|
bgfx::setState(0
|
|
| BGFX_STATE_WRITE_RGB
|
|
| BGFX_STATE_WRITE_A
|
|
| BGFX_STATE_WRITE_Z
|
|
| BGFX_STATE_DEPTH_TEST_LESS
|
|
| BGFX_STATE_MSAA
|
|
);
|
|
|
|
// Submit primitive for rendering to view 0.
|
|
bgfx::submit(RENDER_PASS_GEOMETRY_ID, m_geomProgram);
|
|
}
|
|
|
|
// now downsample.
|
|
for (uint16_t ii = 0; ii < TEX_CHAIN_LEN-1; ++ii)
|
|
{
|
|
float pixelSize[4] =
|
|
{
|
|
1.0f / (float)(m_width / (uint16_t)bx::pow(2.0f, ii + 1)),
|
|
1.0f / (float)(m_height / (uint16_t)bx::pow(2.0f, ii + 1)), 0.0f, 0.0f
|
|
};
|
|
|
|
bgfx::setUniform(u_pixelSize, pixelSize);
|
|
bgfx::setTexture(0, s_tex, m_texChainTex[ii]);
|
|
|
|
bgfx::setState(0
|
|
| BGFX_STATE_WRITE_RGB
|
|
| BGFX_STATE_WRITE_A
|
|
);
|
|
|
|
screenSpaceQuad((float)m_width, (float)m_height, s_texelHalf, m_caps->originBottomLeft);
|
|
bgfx::submit(RENDER_PASS_DOWNSAMPLE0_ID + ii, m_downsampleProgram);
|
|
}
|
|
|
|
// now upsample.
|
|
for (uint16_t ii = 0; ii < TEX_CHAIN_LEN - 1; ++ii)
|
|
{
|
|
const float pixelSize[4] =
|
|
{
|
|
1.0f / (float)(m_width / (uint16_t)bx::pow(2.0f, TEX_CHAIN_LEN - 2 - ii) ),
|
|
1.0f / (float)(m_height / (uint16_t)bx::pow(2.0f, TEX_CHAIN_LEN - 2 - ii) ),
|
|
0.0f,
|
|
0.0f
|
|
};
|
|
const float intensity[4] = { m_intensity, 0.0f, 0.0f, 0.0f };
|
|
|
|
bgfx::setUniform(u_pixelSize, pixelSize);
|
|
bgfx::setUniform(u_intensity, intensity);
|
|
|
|
// Combine color and light buffers.
|
|
bgfx::setTexture(0, s_tex, m_texChainTex[TEX_CHAIN_LEN - 1 - ii]);
|
|
|
|
// as we upscale, we also sum with the previous mip level. We do this by alpha blending.
|
|
bgfx::setState(
|
|
0
|
|
| BGFX_STATE_WRITE_RGB
|
|
| BGFX_STATE_WRITE_A
|
|
| BGFX_STATE_BLEND_ADD
|
|
);
|
|
|
|
screenSpaceQuad((float)m_width, (float)m_height, s_texelHalf, m_caps->originBottomLeft);
|
|
bgfx::submit(RENDER_PASS_UPSAMPLE0_ID + ii, m_upsampleProgram);
|
|
}
|
|
|
|
// do final pass, that combines the bloom with the g-buffer.
|
|
bgfx::setTexture(0, s_albedo, m_gbufferTex[0]);
|
|
bgfx::setTexture(1, s_light, m_texChainTex[0]);
|
|
bgfx::setState(0
|
|
| BGFX_STATE_WRITE_RGB
|
|
| BGFX_STATE_WRITE_A
|
|
);
|
|
screenSpaceQuad( (float)m_width, (float)m_height, s_texelHalf, m_caps->originBottomLeft);
|
|
bgfx::submit(RENDER_PASS_COMBINE_ID, m_combineProgram);
|
|
}
|
|
|
|
imguiEndFrame();
|
|
|
|
// Advance to next frame. Rendering thread will be kicked to
|
|
// process submitted rendering primitives.
|
|
bgfx::frame();
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bgfx::VertexBufferHandle m_vbh;
|
|
bgfx::IndexBufferHandle m_ibh;
|
|
|
|
bgfx::UniformHandle s_albedo;
|
|
bgfx::UniformHandle s_tex;
|
|
bgfx::UniformHandle s_depth;
|
|
bgfx::UniformHandle s_light;
|
|
bgfx::UniformHandle u_pixelSize;
|
|
bgfx::UniformHandle u_intensity;
|
|
bgfx::UniformHandle u_color;
|
|
|
|
|
|
bgfx::UniformHandle u_mtx;
|
|
|
|
bgfx::ProgramHandle m_geomProgram;
|
|
bgfx::ProgramHandle m_downsampleProgram;
|
|
bgfx::ProgramHandle m_upsampleProgram;
|
|
bgfx::ProgramHandle m_combineProgram;
|
|
|
|
bgfx::TextureHandle m_gbufferTex[3];
|
|
|
|
bgfx::FrameBufferHandle m_gbuffer;
|
|
|
|
bgfx::FrameBufferHandle m_texChainFb[TEX_CHAIN_LEN];
|
|
bgfx::TextureHandle m_texChainTex[TEX_CHAIN_LEN];
|
|
|
|
uint32_t m_width;
|
|
uint32_t m_height;
|
|
uint32_t m_debug;
|
|
uint32_t m_reset;
|
|
|
|
float m_intensity = 1.0f;
|
|
|
|
uint32_t m_oldWidth;
|
|
uint32_t m_oldHeight;
|
|
uint32_t m_oldReset;
|
|
|
|
int32_t m_scrollArea;
|
|
|
|
entry::MouseState m_mouseState;
|
|
|
|
const bgfx::Caps* m_caps;
|
|
int64_t m_timeOffset;
|
|
};
|
|
|
|
} // namespace
|
|
|
|
ENTRY_IMPLEMENT_MAIN(ExampleDeferred, "38-bloom", "Bloom.");
|