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Added capabilties check to examples.

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This commit is contained in:
Branimir Karadžić
2017-07-22 21:19:14 -07:00
parent 1a9a42bcda
commit e4147a49be
3 changed files with 364 additions and 333 deletions
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421
examples/19-oit/oit.cpp
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@@ -227,6 +227,12 @@ public:
m_oldHeight = 0;
m_oldReset = m_reset;
m_mrtSupported = true
&& 2 <= caps->limits.maxFBAttachments
&& bgfx::isTextureValid(0, false, 1, bgfx::TextureFormat::RGBA16F, BGFX_TEXTURE_RT)
&& bgfx::isTextureValid(0, false, 1, bgfx::TextureFormat::R16F, BGFX_TEXTURE_RT)
;
m_timeOffset = bx::getHPCounter();
}
@@ -235,7 +241,11 @@ public:
// Cleanup.
imguiDestroy();
bgfx::destroy(m_fbh);
if (bgfx::isValid(m_fbh) )
{
bgfx::destroy(m_fbh);
}
bgfx::destroy(m_ibh);
bgfx::destroy(m_vbh);
bgfx::destroy(m_blend);
@@ -257,26 +267,6 @@ public:
{
if (!entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState) )
{
if (m_oldWidth != m_width
|| m_oldHeight != m_height
|| m_oldReset != m_reset
|| !bgfx::isValid(m_fbh) )
{
// Recreate variable size render targets when resolution changes.
m_oldWidth = m_width;
m_oldHeight = m_height;
m_oldReset = m_reset;
if (bgfx::isValid(m_fbh) )
{
bgfx::destroy(m_fbh);
}
m_fbtextures[0] = bgfx::createTexture2D(uint16_t(m_width), uint16_t(m_height), false, 1, bgfx::TextureFormat::RGBA16F, BGFX_TEXTURE_RT);
m_fbtextures[1] = bgfx::createTexture2D(uint16_t(m_width), uint16_t(m_height), false, 1, bgfx::TextureFormat::R16F, BGFX_TEXTURE_RT);
m_fbh = bgfx::createFrameBuffer(BX_COUNTOF(m_fbtextures), m_fbtextures, true);
}
imguiBeginFrame(m_mouseState.m_mx
, m_mouseState.m_my
, (m_mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
@@ -287,195 +277,223 @@ public:
, uint16_t(m_height)
);
showExampleDialog(this);
ImGui::SetNextWindowPos(
ImVec2(m_width - m_width / 5.0f - 10.0f, 10.0f)
, ImGuiSetCond_FirstUseEver
);
ImGui::Begin("Settings"
, NULL
, ImVec2(m_width / 5.0f, m_height / 3.0f)
, ImGuiWindowFlags_AlwaysAutoResize
showExampleDialog(this
, !m_mrtSupported
? "MRT or frame buffer texture format are not supported."
: NULL
);
ImGui::Separator();
ImGui::Text("Blend mode:");
ImGui::RadioButton("None", &m_mode, 0);
ImGui::RadioButton("Separate", &m_mode, 1);
ImGui::RadioButton("MRT Independent", &m_mode, 2);
ImGui::Separator();
ImGui::Checkbox("Front to back", &m_frontToBack);
ImGui::Checkbox("Fade in/out", &m_fadeInOut);
ImGui::End();
imguiEndFrame();
// Set view 0 default viewport.
bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );
bgfx::setViewRect(1, 0, 0, uint16_t(m_width), uint16_t(m_height) );
int64_t now = bx::getHPCounter();
const double freq = double(bx::getHPFrequency() );
float time = (float)( (now-m_timeOffset)/freq);
// Reference:
// Weighted, Blended Order-Independent Transparency
// http://jcgt.org/published/0002/02/09/
// http://casual-effects.blogspot.com/2014/03/weighted-blended-order-independent.html
float at[3] = { 0.0f, 0.0f, 0.0f };
float eye[3] = { 0.0f, 0.0f, -7.0f };
float view[16];
float proj[16];
// Set view and projection matrix for view 0.
bx::mtxLookAt(view, eye, at);
mtxProj(proj, 60.0f, float(m_width)/float(m_height), 0.1f, 100.0f);
bgfx::setViewTransform(0, view, proj);
// Set palette color for index 0
bgfx::setPaletteColor(0, 0.0f, 0.0f, 0.0f, 0.0f);
// Set palette color for index 1
bgfx::setPaletteColor(1, 1.0f, 1.0f, 1.0f, 1.0f);
bgfx::setViewClear(0
, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
, 1.0f // Depth
, 0 // Stencil
, 0 // FB texture 0, color palette 0
, 1 == m_mode ? 1 : 0 // FB texture 1, color palette 1
);
bgfx::setViewClear(1
, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
, 1.0f // Depth
, 0 // Stencil
, 0 // Color palette 0
);
bgfx::FrameBufferHandle invalid = BGFX_INVALID_HANDLE;
bgfx::setViewFrameBuffer(0, 0 == m_mode ? invalid : m_fbh);
// Set view and projection matrix for view 1.
bx::mtxIdentity(view);
const bgfx::Caps* caps = bgfx::getCaps();
bx::mtxOrtho(proj, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 100.0f, 0.0f, caps->homogeneousDepth);
bgfx::setViewTransform(1, view, proj);
for (uint32_t depth = 0; depth < 3; ++depth)
if (m_mrtSupported)
{
uint32_t zz = m_frontToBack ? 2-depth : depth;
for (uint32_t yy = 0; yy < 3; ++yy)
if (m_oldWidth != m_width
|| m_oldHeight != m_height
|| m_oldReset != m_reset
|| !bgfx::isValid(m_fbh) )
{
for (uint32_t xx = 0; xx < 3; ++xx)
// Recreate variable size render targets when resolution changes.
m_oldWidth = m_width;
m_oldHeight = m_height;
m_oldReset = m_reset;
if (bgfx::isValid(m_fbh) )
{
float color[4] = { xx*1.0f/3.0f, zz*1.0f/3.0f, yy*1.0f/3.0f, 0.5f };
if (m_fadeInOut
&& zz == 1)
{
color[3] = bx::fsin(time*3.0f)*0.49f+0.5f;
}
bgfx::setUniform(u_color, color);
BX_UNUSED(time);
float mtx[16];
bx::mtxRotateXY(mtx, time*0.023f + xx*0.21f, time*0.03f + yy*0.37f);
//mtxIdentity(mtx);
mtx[12] = -2.5f + float(xx)*2.5f;
mtx[13] = -2.5f + float(yy)*2.5f;
mtx[14] = -2.5f + float(zz)*2.5f;
// Set transform for draw call.
bgfx::setTransform(mtx);
// Set vertex and index buffer.
bgfx::setVertexBuffer(0, m_vbh);
bgfx::setIndexBuffer(m_ibh);
const uint64_t state = 0
| BGFX_STATE_CULL_CW
| BGFX_STATE_RGB_WRITE
| BGFX_STATE_ALPHA_WRITE
| BGFX_STATE_DEPTH_TEST_LESS
| BGFX_STATE_MSAA
;
const uint64_t stateNoDepth = 0
| BGFX_STATE_CULL_CW
| BGFX_STATE_RGB_WRITE
| BGFX_STATE_ALPHA_WRITE
| BGFX_STATE_DEPTH_TEST_ALWAYS
| BGFX_STATE_MSAA
;
bgfx::ProgramHandle program = BGFX_INVALID_HANDLE;
switch (m_mode)
{
case 0:
// Set vertex and fragment shaders.
program = m_blend;
// Set render states.
bgfx::setState(state
| BGFX_STATE_BLEND_ALPHA
);
break;
case 1:
// Set vertex and fragment shaders.
program = m_wbSeparatePass;
// Set render states.
bgfx::setState(stateNoDepth
| BGFX_STATE_BLEND_FUNC_SEPARATE(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ZERO, BGFX_STATE_BLEND_INV_SRC_ALPHA)
);
break;
default:
// Set vertex and fragment shaders.
program = m_wbPass;
// Set render states.
bgfx::setState(stateNoDepth
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ONE)
| BGFX_STATE_BLEND_INDEPENDENT
, 0
| BGFX_STATE_BLEND_FUNC_RT_1(BGFX_STATE_BLEND_ZERO, BGFX_STATE_BLEND_SRC_COLOR)
);
break;
}
// Submit primitive for rendering to view 0.
bgfx::submit(0, program);
bgfx::destroy(m_fbh);
}
m_fbtextures[0] = bgfx::createTexture2D(uint16_t(m_width), uint16_t(m_height), false, 1, bgfx::TextureFormat::RGBA16F, BGFX_TEXTURE_RT);
m_fbtextures[1] = bgfx::createTexture2D(uint16_t(m_width), uint16_t(m_height), false, 1, bgfx::TextureFormat::R16F, BGFX_TEXTURE_RT);
m_fbh = bgfx::createFrameBuffer(BX_COUNTOF(m_fbtextures), m_fbtextures, true);
}
ImGui::SetNextWindowPos(
ImVec2(m_width - m_width / 5.0f - 10.0f, 10.0f)
, ImGuiSetCond_FirstUseEver
);
ImGui::Begin("Settings"
, NULL
, ImVec2(m_width / 5.0f, m_height / 3.0f)
, ImGuiWindowFlags_AlwaysAutoResize
);
ImGui::Separator();
ImGui::Text("Blend mode:");
ImGui::RadioButton("None", &m_mode, 0);
ImGui::RadioButton("Separate", &m_mode, 1);
ImGui::RadioButton("MRT Independent", &m_mode, 2);
ImGui::Separator();
ImGui::Checkbox("Front to back", &m_frontToBack);
ImGui::Checkbox("Fade in/out", &m_fadeInOut);
ImGui::End();
// Set view 0 default viewport.
bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );
bgfx::setViewRect(1, 0, 0, uint16_t(m_width), uint16_t(m_height) );
int64_t now = bx::getHPCounter();
const double freq = double(bx::getHPFrequency() );
float time = (float)( (now-m_timeOffset)/freq);
// Reference:
// Weighted, Blended Order-Independent Transparency
// http://jcgt.org/published/0002/02/09/
// http://casual-effects.blogspot.com/2014/03/weighted-blended-order-independent.html
float at[3] = { 0.0f, 0.0f, 0.0f };
float eye[3] = { 0.0f, 0.0f, -7.0f };
float view[16];
float proj[16];
// Set view and projection matrix for view 0.
bx::mtxLookAt(view, eye, at);
mtxProj(proj, 60.0f, float(m_width)/float(m_height), 0.1f, 100.0f);
bgfx::setViewTransform(0, view, proj);
// Set palette color for index 0
bgfx::setPaletteColor(0, 0.0f, 0.0f, 0.0f, 0.0f);
// Set palette color for index 1
bgfx::setPaletteColor(1, 1.0f, 1.0f, 1.0f, 1.0f);
bgfx::setViewClear(0
, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
, 1.0f // Depth
, 0 // Stencil
, 0 // FB texture 0, color palette 0
, 1 == m_mode ? 1 : 0 // FB texture 1, color palette 1
);
bgfx::setViewClear(1
, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
, 1.0f // Depth
, 0 // Stencil
, 0 // Color palette 0
);
bgfx::FrameBufferHandle invalid = BGFX_INVALID_HANDLE;
bgfx::setViewFrameBuffer(0, 0 == m_mode ? invalid : m_fbh);
// Set view and projection matrix for view 1.
bx::mtxIdentity(view);
const bgfx::Caps* caps = bgfx::getCaps();
bx::mtxOrtho(proj, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 100.0f, 0.0f, caps->homogeneousDepth);
bgfx::setViewTransform(1, view, proj);
for (uint32_t depth = 0; depth < 3; ++depth)
{
uint32_t zz = m_frontToBack ? 2-depth : depth;
for (uint32_t yy = 0; yy < 3; ++yy)
{
for (uint32_t xx = 0; xx < 3; ++xx)
{
float color[4] = { xx*1.0f/3.0f, zz*1.0f/3.0f, yy*1.0f/3.0f, 0.5f };
if (m_fadeInOut
&& zz == 1)
{
color[3] = bx::fsin(time*3.0f)*0.49f+0.5f;
}
bgfx::setUniform(u_color, color);
BX_UNUSED(time);
float mtx[16];
bx::mtxRotateXY(mtx, time*0.023f + xx*0.21f, time*0.03f + yy*0.37f);
//mtxIdentity(mtx);
mtx[12] = -2.5f + float(xx)*2.5f;
mtx[13] = -2.5f + float(yy)*2.5f;
mtx[14] = -2.5f + float(zz)*2.5f;
// Set transform for draw call.
bgfx::setTransform(mtx);
// Set vertex and index buffer.
bgfx::setVertexBuffer(0, m_vbh);
bgfx::setIndexBuffer(m_ibh);
const uint64_t state = 0
| BGFX_STATE_CULL_CW
| BGFX_STATE_RGB_WRITE
| BGFX_STATE_ALPHA_WRITE
| BGFX_STATE_DEPTH_TEST_LESS
| BGFX_STATE_MSAA
;
const uint64_t stateNoDepth = 0
| BGFX_STATE_CULL_CW
| BGFX_STATE_RGB_WRITE
| BGFX_STATE_ALPHA_WRITE
| BGFX_STATE_DEPTH_TEST_ALWAYS
| BGFX_STATE_MSAA
;
bgfx::ProgramHandle program = BGFX_INVALID_HANDLE;
switch (m_mode)
{
case 0:
// Set vertex and fragment shaders.
program = m_blend;
// Set render states.
bgfx::setState(state
| BGFX_STATE_BLEND_ALPHA
);
break;
case 1:
// Set vertex and fragment shaders.
program = m_wbSeparatePass;
// Set render states.
bgfx::setState(stateNoDepth
| BGFX_STATE_BLEND_FUNC_SEPARATE(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ZERO, BGFX_STATE_BLEND_INV_SRC_ALPHA)
);
break;
default:
// Set vertex and fragment shaders.
program = m_wbPass;
// Set render states.
bgfx::setState(stateNoDepth
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_ONE, BGFX_STATE_BLEND_ONE)
| BGFX_STATE_BLEND_INDEPENDENT
, 0
| BGFX_STATE_BLEND_FUNC_RT_1(BGFX_STATE_BLEND_ZERO, BGFX_STATE_BLEND_SRC_COLOR)
);
break;
}
// Submit primitive for rendering to view 0.
bgfx::submit(0, program);
}
}
}
if (0 != m_mode)
{
bgfx::setTexture(0, s_texColor0, m_fbtextures[0]);
bgfx::setTexture(1, s_texColor1, m_fbtextures[1]);
bgfx::setState(0
| BGFX_STATE_RGB_WRITE
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_INV_SRC_ALPHA, BGFX_STATE_BLEND_SRC_ALPHA)
);
screenSpaceQuad( (float)m_width, (float)m_height, s_flipV);
bgfx::submit(1
, 1 == m_mode ? m_wbSeparateBlit : m_wbBlit
);
}
}
if (0 != m_mode)
{
bgfx::setTexture(0, s_texColor0, m_fbtextures[0]);
bgfx::setTexture(1, s_texColor1, m_fbtextures[1]);
bgfx::setState(0
| BGFX_STATE_RGB_WRITE
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_INV_SRC_ALPHA, BGFX_STATE_BLEND_SRC_ALPHA)
);
screenSpaceQuad( (float)m_width, (float)m_height, s_flipV);
bgfx::submit(1
, 1 == m_mode ? m_wbSeparateBlit : m_wbBlit
);
}
imguiEndFrame();
// Advance to next frame. Rendering thread will be kicked to
// process submitted rendering primitives.
@@ -495,6 +513,7 @@ public:
int32_t m_mode;
bool m_frontToBack;
bool m_fadeInOut;
bool m_mrtSupported;
uint32_t m_oldWidth;
uint32_t m_oldHeight;