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author Miodrag Milanovic <mmicko@gmail.com>2015-02-01 10:14:17 +0100
committer Miodrag Milanovic <mmicko@gmail.com>2015-02-01 10:14:17 +0100
commitb3303c3a32b94b61f82e739d8d494752047f11c1 (patch)
tree1383c753eaebdfa039f1768f55c96fe800ce020f /3rdparty/bgfx/examples/06-bump/bump.cpp
parent09b6ec9869349cf9befd8c3589f1dccb32bacd1a (diff)
Added BGFX latest code to 3rdparty (nw)
Diffstat (limited to '3rdparty/bgfx/examples/06-bump/bump.cpp')
-rw-r--r--3rdparty/bgfx/examples/06-bump/bump.cpp361
1 files changed, 361 insertions, 0 deletions
diff --git a/3rdparty/bgfx/examples/06-bump/bump.cpp b/3rdparty/bgfx/examples/06-bump/bump.cpp
new file mode 100644
index 00000000000..352430f78f6
--- /dev/null
+++ b/3rdparty/bgfx/examples/06-bump/bump.cpp
@@ -0,0 +1,361 @@
+/*
+ * Copyright 2011-2015 Branimir Karadzic. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#include "common.h"
+#include "bgfx_utils.h"
+
+struct PosNormalTangentTexcoordVertex
+{
+ float m_x;
+ float m_y;
+ float m_z;
+ uint32_t m_normal;
+ uint32_t m_tangent;
+ int16_t m_u;
+ int16_t m_v;
+
+ static void init()
+ {
+ ms_decl
+ .begin()
+ .add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float)
+ .add(bgfx::Attrib::Normal, 4, bgfx::AttribType::Uint8, true, true)
+ .add(bgfx::Attrib::Tangent, 4, bgfx::AttribType::Uint8, true, true)
+ .add(bgfx::Attrib::TexCoord0, 2, bgfx::AttribType::Int16, true, true)
+ .end();
+ }
+
+ static bgfx::VertexDecl ms_decl;
+};
+
+bgfx::VertexDecl PosNormalTangentTexcoordVertex::ms_decl;
+
+uint32_t packUint32(uint8_t _x, uint8_t _y, uint8_t _z, uint8_t _w)
+{
+ union
+ {
+ uint32_t ui32;
+ uint8_t arr[4];
+ } un;
+
+ un.arr[0] = _x;
+ un.arr[1] = _y;
+ un.arr[2] = _z;
+ un.arr[3] = _w;
+
+ return un.ui32;
+}
+
+uint32_t packF4u(float _x, float _y = 0.0f, float _z = 0.0f, float _w = 0.0f)
+{
+ const uint8_t xx = uint8_t(_x*127.0f + 128.0f);
+ const uint8_t yy = uint8_t(_y*127.0f + 128.0f);
+ const uint8_t zz = uint8_t(_z*127.0f + 128.0f);
+ const uint8_t ww = uint8_t(_w*127.0f + 128.0f);
+ return packUint32(xx, yy, zz, ww);
+}
+
+static PosNormalTangentTexcoordVertex s_cubeVertices[24] =
+{
+ {-1.0f, 1.0f, 1.0f, packF4u( 0.0f, 0.0f, 1.0f), 0, 0, 0 },
+ { 1.0f, 1.0f, 1.0f, packF4u( 0.0f, 0.0f, 1.0f), 0, 0x7fff, 0 },
+ {-1.0f, -1.0f, 1.0f, packF4u( 0.0f, 0.0f, 1.0f), 0, 0, 0x7fff },
+ { 1.0f, -1.0f, 1.0f, packF4u( 0.0f, 0.0f, 1.0f), 0, 0x7fff, 0x7fff },
+ {-1.0f, 1.0f, -1.0f, packF4u( 0.0f, 0.0f, -1.0f), 0, 0, 0 },
+ { 1.0f, 1.0f, -1.0f, packF4u( 0.0f, 0.0f, -1.0f), 0, 0x7fff, 0 },
+ {-1.0f, -1.0f, -1.0f, packF4u( 0.0f, 0.0f, -1.0f), 0, 0, 0x7fff },
+ { 1.0f, -1.0f, -1.0f, packF4u( 0.0f, 0.0f, -1.0f), 0, 0x7fff, 0x7fff },
+ {-1.0f, 1.0f, 1.0f, packF4u( 0.0f, 1.0f, 0.0f), 0, 0, 0 },
+ { 1.0f, 1.0f, 1.0f, packF4u( 0.0f, 1.0f, 0.0f), 0, 0x7fff, 0 },
+ {-1.0f, 1.0f, -1.0f, packF4u( 0.0f, 1.0f, 0.0f), 0, 0, 0x7fff },
+ { 1.0f, 1.0f, -1.0f, packF4u( 0.0f, 1.0f, 0.0f), 0, 0x7fff, 0x7fff },
+ {-1.0f, -1.0f, 1.0f, packF4u( 0.0f, -1.0f, 0.0f), 0, 0, 0 },
+ { 1.0f, -1.0f, 1.0f, packF4u( 0.0f, -1.0f, 0.0f), 0, 0x7fff, 0 },
+ {-1.0f, -1.0f, -1.0f, packF4u( 0.0f, -1.0f, 0.0f), 0, 0, 0x7fff },
+ { 1.0f, -1.0f, -1.0f, packF4u( 0.0f, -1.0f, 0.0f), 0, 0x7fff, 0x7fff },
+ { 1.0f, -1.0f, 1.0f, packF4u( 1.0f, 0.0f, 0.0f), 0, 0, 0 },
+ { 1.0f, 1.0f, 1.0f, packF4u( 1.0f, 0.0f, 0.0f), 0, 0x7fff, 0 },
+ { 1.0f, -1.0f, -1.0f, packF4u( 1.0f, 0.0f, 0.0f), 0, 0, 0x7fff },
+ { 1.0f, 1.0f, -1.0f, packF4u( 1.0f, 0.0f, 0.0f), 0, 0x7fff, 0x7fff },
+ {-1.0f, -1.0f, 1.0f, packF4u(-1.0f, 0.0f, 0.0f), 0, 0, 0 },
+ {-1.0f, 1.0f, 1.0f, packF4u(-1.0f, 0.0f, 0.0f), 0, 0x7fff, 0 },
+ {-1.0f, -1.0f, -1.0f, packF4u(-1.0f, 0.0f, 0.0f), 0, 0, 0x7fff },
+ {-1.0f, 1.0f, -1.0f, packF4u(-1.0f, 0.0f, 0.0f), 0, 0x7fff, 0x7fff },
+};
+
+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,
+};
+
+int _main_(int /*_argc*/, char** /*_argv*/)
+{
+ uint32_t width = 1280;
+ uint32_t height = 720;
+ uint32_t debug = BGFX_DEBUG_TEXT;
+ uint32_t reset = BGFX_RESET_VSYNC;
+
+ bgfx::init();
+ bgfx::reset(width, height, reset);
+
+ // Enable debug text.
+ bgfx::setDebug(debug);
+
+ // Set view 0 clear state.
+ bgfx::setViewClear(0
+ , BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
+ , 0x303030ff
+ , 1.0f
+ , 0
+ );
+
+ // Get renderer capabilities info.
+ const bgfx::Caps* caps = bgfx::getCaps();
+ bool instancingSupported = 0 != (caps->supported & BGFX_CAPS_INSTANCING);
+
+ // Create vertex stream declaration.
+ PosNormalTangentTexcoordVertex::init();
+
+ calcTangents(s_cubeVertices
+ , BX_COUNTOF(s_cubeVertices)
+ , PosNormalTangentTexcoordVertex::ms_decl
+ , s_cubeIndices
+ , BX_COUNTOF(s_cubeIndices)
+ );
+
+ // Create static vertex buffer.
+ bgfx::VertexBufferHandle vbh = bgfx::createVertexBuffer(
+ bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) )
+ , PosNormalTangentTexcoordVertex::ms_decl
+ );
+
+ // Create static index buffer.
+ bgfx::IndexBufferHandle ibh = bgfx::createIndexBuffer(bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) ) );
+
+ // Create texture sampler uniforms.
+ bgfx::UniformHandle u_texColor = bgfx::createUniform("u_texColor", bgfx::UniformType::Uniform1iv);
+ bgfx::UniformHandle u_texNormal = bgfx::createUniform("u_texNormal", bgfx::UniformType::Uniform1iv);
+
+ uint16_t numLights = 4;
+ bgfx::UniformHandle u_lightPosRadius = bgfx::createUniform("u_lightPosRadius", bgfx::UniformType::Uniform4fv, numLights);
+ bgfx::UniformHandle u_lightRgbInnerR = bgfx::createUniform("u_lightRgbInnerR", bgfx::UniformType::Uniform4fv, numLights);
+
+ // Create program from shaders.
+ bgfx::ProgramHandle program = loadProgram(instancingSupported ? "vs_bump_instanced" : "vs_bump", "fs_bump");
+
+ // Load diffuse texture.
+ bgfx::TextureHandle textureColor = loadTexture("fieldstone-rgba.dds");
+
+ // Load normal texture.
+ bgfx::TextureHandle textureNormal = loadTexture("fieldstone-n.dds");
+
+ int64_t timeOffset = bx::getHPCounter();
+
+ while (!entry::processEvents(width, height, debug, reset) )
+ {
+ // Set view 0 default viewport.
+ bgfx::setViewRect(0, 0, 0, width, 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::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-timeOffset)/freq);
+
+ // Use debug font to print information about this example.
+ bgfx::dbgTextClear();
+ bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/06-bump");
+ bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Loading textures.");
+ bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
+
+ float at[3] = { 0.0f, 0.0f, 0.0f };
+ float eye[3] = { 0.0f, 0.0f, -7.0f };
+
+ // Set view and projection matrix for view 0.
+ const bgfx::HMD* hmd = bgfx::getHMD();
+ if (NULL != hmd)
+ {
+ float view[16];
+ bx::mtxQuatTranslationHMD(view, hmd->eye[0].rotation, eye);
+
+ float proj[16];
+ bx::mtxProj(proj, hmd->eye[0].fov, 0.1f, 100.0f);
+
+ bgfx::setViewTransform(0, view, proj);
+
+ // 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(width)/float(height), 0.1f, 100.0f);
+ bgfx::setViewTransform(0, view, proj);
+
+ // Set view 0 default viewport.
+ bgfx::setViewRect(0, 0, 0, width, height);
+ }
+
+ float lightPosRadius[4][4];
+ for (uint32_t ii = 0; ii < numLights; ++ii)
+ {
+ lightPosRadius[ii][0] = sin( (time*(0.1f + ii*0.17f) + ii*bx::piHalf*1.37f ) )*3.0f;
+ lightPosRadius[ii][1] = cos( (time*(0.2f + ii*0.29f) + ii*bx::piHalf*1.49f ) )*3.0f;
+ lightPosRadius[ii][2] = -2.5f;
+ lightPosRadius[ii][3] = 3.0f;
+ }
+
+ bgfx::setUniform(u_lightPosRadius, lightPosRadius, numLights);
+
+ float lightRgbInnerR[4][4] =
+ {
+ { 1.0f, 0.7f, 0.2f, 0.8f },
+ { 0.7f, 0.2f, 1.0f, 0.8f },
+ { 0.2f, 1.0f, 0.7f, 0.8f },
+ { 1.0f, 0.4f, 0.2f, 0.8f },
+ };
+
+ bgfx::setUniform(u_lightRgbInnerR, lightRgbInnerR, numLights);
+
+ const uint16_t instanceStride = 64;
+ const uint16_t numInstances = 3;
+
+ if (instancingSupported)
+ {
+ // Write instance data for 3x3 cubes.
+ for (uint32_t yy = 0; yy < 3; ++yy)
+ {
+ const bgfx::InstanceDataBuffer* idb = bgfx::allocInstanceDataBuffer(numInstances, instanceStride);
+ if (NULL != idb)
+ {
+ uint8_t* data = idb->data;
+
+ for (uint32_t xx = 0; xx < 3; ++xx)
+ {
+ float* mtx = (float*)data;
+ bx::mtxRotateXY(mtx, time*0.023f + xx*0.21f, time*0.03f + yy*0.37f);
+ mtx[12] = -3.0f + float(xx)*3.0f;
+ mtx[13] = -3.0f + float(yy)*3.0f;
+ mtx[14] = 0.0f;
+
+ data += instanceStride;
+ }
+
+ // Set instance data buffer.
+ bgfx::setInstanceDataBuffer(idb, numInstances);
+
+ // Set vertex and fragment shaders.
+ bgfx::setProgram(program);
+
+ // Set vertex and index buffer.
+ bgfx::setVertexBuffer(vbh);
+ bgfx::setIndexBuffer(ibh);
+
+ // Bind textures.
+ bgfx::setTexture(0, u_texColor, textureColor);
+ bgfx::setTexture(1, u_texNormal, textureNormal);
+
+ // 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_MSAA
+ );
+
+ // Submit primitive for rendering to view 0.
+ bgfx::submit(0);
+ }
+ }
+ }
+ else
+ {
+ for (uint32_t yy = 0; yy < 3; ++yy)
+ {
+ for (uint32_t xx = 0; xx < 3; ++xx)
+ {
+ float mtx[16];
+ bx::mtxRotateXY(mtx, time*0.023f + xx*0.21f, time*0.03f + yy*0.37f);
+ mtx[12] = -3.0f + float(xx)*3.0f;
+ mtx[13] = -3.0f + float(yy)*3.0f;
+ mtx[14] = 0.0f;
+
+ // Set transform for draw call.
+ bgfx::setTransform(mtx);
+
+ // Set vertex and fragment shaders.
+ bgfx::setProgram(program);
+
+ // Set vertex and index buffer.
+ bgfx::setVertexBuffer(vbh);
+ bgfx::setIndexBuffer(ibh);
+
+ // Bind textures.
+ bgfx::setTexture(0, u_texColor, textureColor);
+ bgfx::setTexture(1, u_texNormal, textureNormal);
+
+ // 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_MSAA
+ );
+
+ // Submit primitive for rendering to view 0.
+ bgfx::submit(0);
+ }
+ }
+ }
+
+ // Advance to next frame. Rendering thread will be kicked to
+ // process submitted rendering primitives.
+ bgfx::frame();
+ }
+
+ // Cleanup.
+ bgfx::destroyIndexBuffer(ibh);
+ bgfx::destroyVertexBuffer(vbh);
+ bgfx::destroyProgram(program);
+ bgfx::destroyTexture(textureColor);
+ bgfx::destroyTexture(textureNormal);
+ bgfx::destroyUniform(u_texColor);
+ bgfx::destroyUniform(u_texNormal);
+ bgfx::destroyUniform(u_lightPosRadius);
+ bgfx::destroyUniform(u_lightRgbInnerR);
+
+ // Shutdown bgfx.
+ bgfx::shutdown();
+
+ return 0;
+}