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-rw-r--r--3rdparty/bgfx/examples/34-mvs/mvs.cpp293
1 files changed, 293 insertions, 0 deletions
diff --git a/3rdparty/bgfx/examples/34-mvs/mvs.cpp b/3rdparty/bgfx/examples/34-mvs/mvs.cpp
new file mode 100644
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+++ b/3rdparty/bgfx/examples/34-mvs/mvs.cpp
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+/*
+ * Copyright 2011-2017 Branimir Karadzic. All rights reserved.
+ * License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
+ */
+
+#include "common.h"
+#include "bgfx_utils.h"
+#include "imgui/imgui.h"
+
+namespace
+{
+
+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 ColorVertex
+{
+ uint32_t m_abgr;
+
+ static void init()
+ {
+ ms_decl
+ .begin()
+ .add(bgfx::Attrib::Color0, 4, bgfx::AttribType::Uint8, true)
+ .end();
+ };
+
+ static bgfx::VertexDecl ms_decl;
+};
+
+bgfx::VertexDecl ColorVertex::ms_decl;
+
+static PosVertex s_cubePosVertices[] =
+{
+ {-1.0f, 1.0f, 1.0f },
+ { 1.0f, 1.0f, 1.0f },
+ {-1.0f, -1.0f, 1.0f },
+ { 1.0f, -1.0f, 1.0f },
+ {-1.0f, 1.0f, -1.0f },
+ { 1.0f, 1.0f, -1.0f },
+ {-1.0f, -1.0f, -1.0f },
+ { 1.0f, -1.0f, -1.0f },
+};
+
+static ColorVertex s_cubeColorVertices[] =
+{
+ { 0xff000000 },
+ { 0xff0000ff },
+ { 0xff00ff00 },
+ { 0xff00ffff },
+ { 0xffff0000 },
+ { 0xffff00ff },
+ { 0xffffff00 },
+ { 0xffffffff },
+};
+
+static const uint16_t s_cubeTriList[] =
+{
+ 0, 1, 2, // 0
+ 1, 3, 2,
+ 4, 6, 5, // 2
+ 5, 6, 7,
+ 0, 2, 4, // 4
+ 4, 2, 6,
+ 1, 5, 3, // 6
+ 5, 7, 3,
+ 0, 4, 1, // 8
+ 4, 5, 1,
+ 2, 3, 6, // 10
+ 6, 3, 7,
+};
+
+static const uint16_t s_cubeTriStrip[] =
+{
+ 0, 1, 2,
+ 3,
+ 7,
+ 1,
+ 5,
+ 0,
+ 4,
+ 2,
+ 6,
+ 7,
+ 4,
+ 5,
+};
+
+class ExampleMvs : public entry::AppI
+{
+public:
+ ExampleMvs(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
+ {
+ BX_UNUSED(s_cubeTriList, s_cubeTriStrip);
+
+ Args args(_argc, _argv);
+
+ m_width = _width;
+ m_height = _height;
+ m_debug = BGFX_DEBUG_NONE;
+ m_reset = BGFX_RESET_VSYNC;
+
+ bgfx::init(args.m_type, args.m_pciId);
+ bgfx::reset(m_width, m_height, m_reset);
+
+ // Enable debug text.
+ bgfx::setDebug(m_debug);
+
+ // Set view 0 clear state.
+ bgfx::setViewClear(0
+ , BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
+ , 0x303030ff
+ , 1.0f
+ , 0
+ );
+
+ // Create vertex stream declaration.
+ PosVertex::init();
+ ColorVertex::init();
+
+ // Create static vertex buffer.
+ m_vbh[0] = bgfx::createVertexBuffer(
+ // Static data can be passed with bgfx::makeRef
+ bgfx::makeRef(s_cubePosVertices, sizeof(s_cubePosVertices) )
+ , PosVertex::ms_decl
+ );
+
+ m_vbh[1] = bgfx::createVertexBuffer(
+ // Static data can be passed with bgfx::makeRef
+ bgfx::makeRef(s_cubeColorVertices, sizeof(s_cubeColorVertices) )
+ , ColorVertex::ms_decl
+ );
+
+ // Create static index buffer.
+ m_ibh = bgfx::createIndexBuffer(
+ // Static data can be passed with bgfx::makeRef
+ bgfx::makeRef(s_cubeTriStrip, sizeof(s_cubeTriStrip) )
+ );
+
+ // Create program from shaders.
+ m_program = loadProgram("vs_cubes", "fs_cubes");
+
+ m_timeOffset = bx::getHPCounter();
+
+ imguiCreate();
+ }
+
+ virtual int shutdown() override
+ {
+ imguiDestroy();
+
+ // Cleanup.
+ bgfx::destroy(m_ibh);
+ bgfx::destroy(m_vbh[0]);
+ bgfx::destroy(m_vbh[1]);
+ bgfx::destroy(m_program);
+
+ // 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);
+
+ imguiEndFrame();
+
+ float time = (float)( (bx::getHPCounter()-m_timeOffset)/double(bx::getHPFrequency() ) );
+
+ float at[3] = { 0.0f, 0.0f, 0.0f };
+ float eye[3] = { 0.0f, 0.0f, -35.0f };
+
+ // Set view and projection matrix for view 0.
+ const bgfx::HMD* hmd = bgfx::getHMD();
+ if (NULL != hmd && 0 != (hmd->flags & BGFX_HMD_RENDERING) )
+ {
+ float view[16];
+ bx::mtxQuatTranslationHMD(view, hmd->eye[0].rotation, eye);
+ bgfx::setViewTransform(0, view, hmd->eye[0].projection, BGFX_VIEW_STEREO, hmd->eye[1].projection);
+
+ // Set view 0 default viewport.
+ //
+ // Use HMD's width/height since HMD's internal frame buffer size
+ // might be much larger than window size.
+ bgfx::setViewRect(0, 0, 0, hmd->width, hmd->height);
+ }
+ else
+ {
+ float view[16];
+ bx::mtxLookAt(view, eye, at);
+
+ float proj[16];
+ bx::mtxProj(proj, 60.0f, float(m_width)/float(m_height), 0.1f, 100.0f, bgfx::getCaps()->homogeneousDepth);
+ bgfx::setViewTransform(0, view, proj);
+
+ // 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);
+
+ // Submit 11x11 cubes.
+ for (uint32_t yy = 0; yy < 11; ++yy)
+ {
+ for (uint32_t xx = 0; xx < 11; ++xx)
+ {
+ float mtx[16];
+ bx::mtxRotateXY(mtx, time + xx*0.21f, time + yy*0.37f);
+ mtx[12] = -15.0f + float(xx)*3.0f;
+ mtx[13] = -15.0f + float(yy)*3.0f;
+ mtx[14] = 0.0f;
+
+ // Set model matrix for rendering.
+ bgfx::setTransform(mtx);
+
+ // Set vertex and index buffer.
+ bgfx::setVertexBuffer(0, m_vbh[0]);
+ bgfx::setVertexBuffer(1, m_vbh[1]);
+ bgfx::setIndexBuffer(m_ibh);
+
+ // Set render states.
+ bgfx::setState(0
+ | BGFX_STATE_DEFAULT
+ | BGFX_STATE_PT_TRISTRIP
+ );
+
+ // Submit primitive for rendering to view 0.
+ bgfx::submit(0, m_program);
+ }
+ }
+
+ // Advance to next frame. Rendering thread will be kicked to
+ // process submitted rendering primitives.
+ bgfx::frame();
+
+ return true;
+ }
+
+ return false;
+ }
+
+ entry::MouseState m_mouseState;
+
+ uint32_t m_width;
+ uint32_t m_height;
+ uint32_t m_debug;
+ uint32_t m_reset;
+ bgfx::VertexBufferHandle m_vbh[2];
+ bgfx::IndexBufferHandle m_ibh;
+ bgfx::ProgramHandle m_program;
+ int64_t m_timeOffset;
+};
+
+} // namespace
+
+ENTRY_IMPLEMENT_MAIN(ExampleMvs, "34-mvs", "Multiple vertex streams.");