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-rw-r--r--tests/auto/runtime/geometry/Qt3DSRenderTestTessellation.cpp560
1 files changed, 560 insertions, 0 deletions
diff --git a/tests/auto/runtime/geometry/Qt3DSRenderTestTessellation.cpp b/tests/auto/runtime/geometry/Qt3DSRenderTestTessellation.cpp
new file mode 100644
index 0000000..f2724a4
--- /dev/null
+++ b/tests/auto/runtime/geometry/Qt3DSRenderTestTessellation.cpp
@@ -0,0 +1,560 @@
+/****************************************************************************
+**
+** Copyright (C) 2008-2012 NVIDIA Corporation.
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "Qt3DSRenderTestTessellation.h"
+#include "../Qt3DSRenderTestMathUtil.h"
+#include "render/Qt3DSRenderShaderProgram.h"
+#include "render/backends/gl/Qt3DSOpenGLUtil.h"
+
+#include <string>
+
+using namespace qt3ds;
+using namespace qt3ds::render;
+
+static const char *vertShader(std::string &prog, bool binESContext)
+{
+ if (binESContext) {
+ prog += "#version 310 es\n"
+ "precision highp float;\n"
+ "precision highp int;\n";
+ } else {
+ prog += "#version 400\n";
+ }
+
+ prog += "uniform mat4 mat_mvp;\n"
+ "in vec3 attr_pos; // Vertex pos\n"
+ "void main()\n"
+ "{\n"
+ " gl_Position = vec4(attr_pos, 1.0);\n"
+ "}\n";
+
+ return prog.c_str();
+}
+
+static const char *vertPhongShader(std::string &prog, bool binESContext)
+{
+ if (binESContext) {
+ prog += "#version 310 es\n"
+ "precision highp float;\n"
+ "precision highp int;\n";
+ } else {
+ prog += "#version 400\n";
+ }
+
+ prog += "uniform mat4 mat_mvp;\n"
+ "in vec3 attr_pos; // Vertex pos\n"
+ "in vec3 attr_norm; // normal pos\n"
+ "out vec3 ctNorm; // output normal control patch\n"
+ "void main()\n"
+ "{\n"
+ " ctNorm = attr_norm;\n"
+ " gl_Position = vec4(attr_pos, 1.0);\n"
+ "}\n";
+
+ return prog.c_str();
+}
+
+static const char *fragShader(std::string &prog, bool binESContext)
+{
+ if (binESContext) {
+ prog += "#version 310 es\n"
+ "precision highp float;\n"
+ "precision highp int;\n";
+ } else {
+ prog += "#version 400\n";
+ }
+
+ prog += "uniform vec3 color;\n"
+ "out vec4 fragColor;\n"
+ "void main()\n"
+ "{\n"
+ " fragColor = vec4(color, 1.0);\n"
+ "}\n";
+
+ return prog.c_str();
+}
+
+static const char *fragPhongShader(std::string &prog, bool binESContext)
+{
+ if (binESContext) {
+ prog += "#version 310 es\n"
+ "precision highp float;\n"
+ "precision highp int;\n";
+ } else {
+ prog += "#version 400\n";
+ }
+
+ prog += "uniform vec3 color;\n"
+ "in vec3 normWorld;\n"
+ "out vec4 fragColor;\n"
+ "void main()\n"
+ "{\n"
+ " fragColor = vec4(color, 1.0);\n"
+ "}\n";
+
+ return prog.c_str();
+}
+
+static const char *tessControlShader(std::string &prog, bool binESContext)
+{
+ if (binESContext) {
+ prog += "#version 310 es\n"
+ "#extension GL_EXT_tessellation_shader : enable\n"
+ "precision highp float;\n"
+ "precision highp int;\n";
+ } else {
+ prog += "#version 400\n";
+ }
+
+ prog += "// number of CPs in patch\n"
+ "layout (vertices = 3) out;\n"
+ "uniform float tessLevelInner; // controlled by keyboard buttons\n"
+ "uniform float tessLevelOuter; // controlled by keyboard buttons\n"
+ "void main () {\n"
+ "gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;\n"
+ "// Calculate the tessellation levels\n"
+ "gl_TessLevelInner[0] = tessLevelInner; // number of nested primitives to generate\n"
+ "gl_TessLevelOuter[0] = tessLevelOuter; // times to subdivide first side\n"
+ "gl_TessLevelOuter[1] = tessLevelOuter; // times to subdivide second side\n"
+ "gl_TessLevelOuter[2] = tessLevelOuter; // times to subdivide third side\n"
+ "}\n";
+
+ return prog.c_str();
+}
+
+static const char *tessPhongControlShader(std::string &prog, bool binESContext)
+{
+ if (binESContext) {
+ prog += "#version 310 es\n"
+ "#extension GL_EXT_tessellation_shader : enable\n"
+ "precision highp float;\n"
+ "precision highp int;\n";
+ } else {
+ prog += "#version 400\n";
+ }
+
+ prog +=
+ "// number of CPs in patch\n"
+ "layout (vertices = 3) out;\n"
+ "// phong tessellation per patch data\n"
+ "struct PhongTessPatch {\n"
+ " float projIJ;\n"
+ " float projJK;\n"
+ " float projIK;\n"
+ "};\n"
+ "in vec3 ctNorm[]; // control point normal\n"
+ "out vec3 normObj[]; // output normal pos\n"
+ "uniform float tessLevels;\n"
+ "uniform float tessBlend;\n"
+ "out PhongTessPatch tcTessPatch[3];\n"
+ "float PIi(int i, vec3 q)\n"
+ "{\n"
+ " vec3 q_minus_p = q - gl_in[i].gl_Position.xyz;\n"
+ " return q[gl_InvocationID] - dot(q_minus_p, ctNorm[i]) * ctNorm[i][gl_InvocationID];\n"
+ "}\n"
+ "void main () {\n"
+ " // path through data\n"
+ " gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;\n"
+ " normObj[gl_InvocationID] = ctNorm[gl_InvocationID];\n"
+ " // compute projections separate for each xyz component\n"
+ " tcTessPatch[gl_InvocationID].projIJ = PIi(0, gl_in[1].gl_Position.xyz) + PIi(1, "
+ "gl_in[0].gl_Position.xyz);\n"
+ " tcTessPatch[gl_InvocationID].projJK = PIi(1, gl_in[2].gl_Position.xyz) + PIi(2, "
+ "gl_in[1].gl_Position.xyz);\n"
+ " tcTessPatch[gl_InvocationID].projIK = PIi(2, gl_in[0].gl_Position.xyz) + PIi(0, "
+ "gl_in[2].gl_Position.xyz);\n"
+ " // set the tessellation levels\n"
+ " gl_TessLevelInner[0] = tessLevels; // number of nested primitives to generate\n"
+ " gl_TessLevelOuter[gl_InvocationID] = tessLevels; // times to subdivide first side\n"
+ "}\n";
+
+ return prog.c_str();
+}
+
+static const char *tessEvaluationShader(std::string &prog, bool binESContext)
+{
+ if (binESContext) {
+ prog += "#version 310 es\n"
+ "#extension GL_EXT_tessellation_shader : enable\n"
+ "precision highp float;\n"
+ "precision highp int;\n";
+ } else {
+ prog += "#version 400\n";
+ }
+
+ prog += "// triangles, quads, or isolines\n"
+ "layout (triangles, equal_spacing, ccw) in;\n"
+ "uniform mat4 mat_mvp;\n"
+ "// gl_TessCoord is location within the patch\n"
+ "// (barycentric for triangles, UV for quads)\n"
+ "void main () {\n"
+ "vec4 p0 = gl_TessCoord.x * gl_in[0].gl_Position; // x is one corner\n"
+ "vec4 p1 = gl_TessCoord.y * gl_in[1].gl_Position; // y is the 2nd corner\n"
+ "vec4 p2 = gl_TessCoord.z * gl_in[2].gl_Position; // z is the 3rd corner (ignore when "
+ "using quads)\n"
+ "vec4 pos = p0 + p1 + p2;\n"
+ "gl_Position = mat_mvp * pos;\n"
+ "}\n";
+
+ return prog.c_str();
+}
+
+static const char *tessPhongEvaluationShader(std::string &prog, bool binESContext)
+{
+ if (binESContext) {
+ prog += "#version 310 es\n"
+ "#extension GL_EXT_tessellation_shader : enable\n"
+ "precision highp float;\n"
+ "precision highp int;\n";
+ } else {
+ prog += "#version 400\n";
+ }
+
+ prog += "// triangles, quads, or isolines\n"
+ "layout (triangles, fractional_odd_spacing, ccw) in;\n"
+ "struct PhongTessPatch {\n"
+ " float projIJ;\n"
+ " float projJK;\n"
+ " float projIK;\n"
+ "};\n"
+ "in vec3 normObj[]; // control point normal\n"
+ "out vec3 normWorld; // output normal pos\n"
+ "in PhongTessPatch tcTessPatch[];\n"
+ "uniform mat4 mat_mvp;\n"
+ "uniform float tessBlend;\n"
+ "// gl_TessCoord is location within the patch\n"
+ "// (barycentric for triangles, UV for quads)\n"
+ "void main () {\n"
+ " // output normal\n"
+ " // pre compute square tesselation coord\n"
+ " vec3 tessSquared = gl_TessCoord * gl_TessCoord;\n"
+ " vec3 norm = gl_TessCoord.x * normObj[0]\n"
+ " + gl_TessCoord.y * normObj[1]\n"
+ " + gl_TessCoord.z * normObj[2]; // z is the 3rd corner (ignore when "
+ "using quads)\n"
+ " // barycentric linear position\n"
+ " vec3 linearPos = gl_TessCoord.x * gl_in[0].gl_Position.xyz\n"
+ " + gl_TessCoord.y * gl_in[1].gl_Position.xyz\n"
+ " + gl_TessCoord.z * gl_in[2].gl_Position.xyz;\n"
+ " // projective terms\n"
+ " vec3 projJI = vec3(tcTessPatch[0].projIJ, tcTessPatch[1].projIJ, "
+ "tcTessPatch[2].projIJ);\n"
+ " vec3 projKJ = vec3(tcTessPatch[0].projJK, tcTessPatch[1].projJK, "
+ "tcTessPatch[2].projJK);\n"
+ " vec3 projIK = vec3(tcTessPatch[0].projIK, tcTessPatch[1].projIK, "
+ "tcTessPatch[2].projIK);\n"
+ " // phong interpolated position\n"
+ " vec3 phongPos = tessSquared.x * gl_in[0].gl_Position.xyz\n"
+ " + tessSquared.y * gl_in[1].gl_Position.xyz\n"
+ " + tessSquared.z * gl_in[2].gl_Position.xyz\n"
+ " + gl_TessCoord.x * gl_TessCoord.y * projJI\n"
+ " + gl_TessCoord.y * gl_TessCoord.z * projKJ\n"
+ " + gl_TessCoord.z * gl_TessCoord.x * projIK;\n"
+ " // final position\n"
+ " vec3 finalPos = (1.0-tessBlend)*linearPos + tessBlend*phongPos;\n"
+ " gl_Position = mat_mvp * vec4(finalPos, 1.0);\n"
+ " normWorld = norm;\n"
+ "}\n";
+
+ return prog.c_str();
+}
+
+struct Vertex
+{
+ QT3DSVec3 positions;
+ QT3DSVec3 normals;
+};
+
+NVRenderTestTessellation::NVRenderTestTessellation()
+{
+ _curTest = 0;
+ _maxColumn = 4;
+}
+
+NVRenderTestTessellation::~NVRenderTestTessellation()
+{
+}
+
+bool NVRenderTestTessellation::isSupported(NVRenderContext *context)
+{
+ NVRenderContextType ctxType = context->GetRenderContextType();
+ NVRenderContextType nonSupportedFlags(
+ NVRenderContextValues::GL2 | NVRenderContextValues::GLES2 | NVRenderContextValues::GL3
+ | NVRenderContextValues::GLES3 | NVRenderContextValues::GLES3PLUS);
+
+ // This is currently only supported on >= GL4 && >= GLES 3.1
+ if ((ctxType & nonSupportedFlags))
+ return false;
+
+ return true;
+}
+
+////////////////////////////////
+// test for functionality
+////////////////////////////////
+
+inline NVConstDataRef<QT3DSI8> toRef(const char *data)
+{
+ size_t len = strlen(data) + 1;
+ return NVConstDataRef<QT3DSI8>((const QT3DSI8 *)data, (QT3DSU32)len);
+}
+
+bool NVRenderTestTessellation::run(NVRenderContext *context, userContextData *pUserData)
+{
+ bool success = true;
+
+ context->SetRenderTarget(NULL);
+ // conpute cell width
+ _cellSize = pUserData->winWidth / _maxColumn;
+
+ context->SetClearColor(QT3DSVec4(.0f, .0f, .0f, 1.f));
+ context->Clear(NVRenderClearFlags(NVRenderClearValues::Color | NVRenderClearValues::Depth));
+
+ success &= trianglePatches(context, pUserData);
+ _curTest++;
+ success &= phongPatches(context, pUserData);
+ _curTest++;
+
+ return success;
+}
+
+bool NVRenderTestTessellation::trianglePatches(NVRenderContext *context, userContextData *pUserData)
+{
+ static const Vertex vertexPositions[] = { { QT3DSVec3(-0.9, -0.9, 0) },
+ { QT3DSVec3(0.9, -0.9, 0) },
+ { QT3DSVec3(0.0, 0.9, 0) } };
+
+ qt3ds::QT3DSVec3 color(0.0, 1.0, 0.0);
+
+ NVScopedRefCounted<NVRenderVertexBuffer> mVertexBuffer;
+ NVScopedRefCounted<NVRenderAttribLayout> mAttribLayout;
+ NVScopedRefCounted<NVRenderInputAssembler> mInputAssembler;
+ NVScopedRefCounted<NVRenderIndexBuffer> mIndexBuffer;
+ QT3DSMat44 mvp = QT3DSMat44::createIdentity();
+ NvGl2DemoMatrixOrtho(&mvp, -1, 1, -1, 1, -10, 10);
+
+ // create shaders
+ std::string vtxProg;
+ std::string frgProg;
+ std::string tcProg;
+ std::string teProg;
+ NVRenderVertFragCompilationResult compResult = context->CompileSource(
+ "NVRenderTestTessellation shader", toRef(vertShader(vtxProg, isGLESContext(context))),
+ toRef(fragShader(frgProg, isGLESContext(context))),
+ toRef(tessControlShader(tcProg, isGLESContext(context))),
+ toRef(tessEvaluationShader(teProg, isGLESContext(context))));
+ if (!compResult.mShader) {
+ return false;
+ }
+
+ unsigned int curY = 0;
+ unsigned int curX = _curTest;
+ if (_curTest >= _maxColumn) {
+ curY = (_curTest / _maxColumn);
+ curX = (_curTest % _maxColumn);
+ }
+
+ // set viewport
+ context->SetViewport(NVRenderRect(curX * _cellSize, curY * _cellSize, _cellSize, _cellSize));
+
+ // this is the layout
+ NVRenderVertexBufferEntry entries[] = {
+ NVRenderVertexBufferEntry("attr_pos", NVRenderComponentTypes::QT3DSF32, 3, 0),
+ };
+
+ QT3DSU32 bufSize = 3 * sizeof(Vertex);
+ NVDataRef<QT3DSU8> vertData((QT3DSU8 *)vertexPositions, bufSize);
+ mVertexBuffer = context->CreateVertexBuffer(NVRenderBufferUsageType::Static, bufSize,
+ 6 * sizeof(QT3DSF32), vertData);
+ if (!mVertexBuffer) {
+ qWarning() << "NVRenderTestFboMsaa: Failed to create vertex buffer";
+ return false;
+ }
+
+ // create our attribute layout
+ mAttribLayout = context->CreateAttributeLayout(toConstDataRef(entries, 1));
+ // create input Assembler
+ QT3DSU32 strides = mVertexBuffer->GetStride();
+ QT3DSU32 offsets = 0;
+ mInputAssembler = context->CreateInputAssembler(
+ mAttribLayout, toConstDataRef(&mVertexBuffer.mPtr, 1), mIndexBuffer.mPtr,
+ toConstDataRef(&strides, 1), toConstDataRef(&offsets, 1), NVRenderDrawMode::Patches, 3);
+ if (!mInputAssembler) {
+ qWarning() << "NVRenderTestFboMsaa: Failed to create input assembler";
+ return false;
+ }
+
+ // make input assembler active
+ context->SetInputAssembler(mInputAssembler);
+ // set program
+ context->SetActiveShader(compResult.mShader);
+ compResult.mShader->SetPropertyValue("mat_mvp", mvp);
+ // set color
+ compResult.mShader->SetPropertyValue("color", color);
+ // set tessellation values
+ float tessLevelInner = 4.0;
+ compResult.mShader->SetPropertyValue("tessLevelInner", tessLevelInner);
+ float tessLevelOuter = 4.0;
+ compResult.mShader->SetPropertyValue("tessLevelOuter", tessLevelOuter);
+
+ context->SetDepthTestEnabled(true);
+ context->SetDepthWriteEnabled(true);
+
+ // draw
+ context->Draw(mInputAssembler->GetPrimitiveType(), 3, 0);
+
+ context->SetActiveShader(0);
+ compResult.mShader->release();
+
+ return true;
+}
+
+bool NVRenderTestTessellation::phongPatches(NVRenderContext *context, userContextData *pUserData)
+{
+ QT3DSVec3 n1(-1.0, 0.5, 1.0);
+ n1.normalize();
+ QT3DSVec3 n2(1.0, 0.5, 1.0);
+ n2.normalize();
+ QT3DSVec3 n3(0.0, 1.0, 1.0);
+ n3.normalize();
+ static const Vertex vertexPositions[] = { { QT3DSVec3(-0.9, -0.9, 0.0), n1 },
+ { QT3DSVec3(0.9, -0.9, 0.0), n2 },
+ { QT3DSVec3(0.0, 0.9, -0.0), n3 } };
+
+ qt3ds::QT3DSVec3 color(0.0, 1.0, 0.0);
+
+ NVScopedRefCounted<NVRenderVertexBuffer> mVertexBuffer;
+ NVScopedRefCounted<NVRenderAttribLayout> mAttribLayout;
+ NVScopedRefCounted<NVRenderInputAssembler> mInputAssembler;
+ NVScopedRefCounted<NVRenderIndexBuffer> mIndexBuffer;
+ QT3DSMat44 p = QT3DSMat44::createIdentity();
+ QT3DSMat44 rotX = QT3DSMat44::createIdentity();
+ QT3DSMat44 rotY = QT3DSMat44::createIdentity();
+ QT3DSMat44 mv = QT3DSMat44::createIdentity();
+ QT3DSMat44 mvp = QT3DSMat44::createIdentity();
+ NvGl2DemoMatrixOrtho(&p, -1, 1, -1, 1, -10, 10);
+ // NvRenderTestMatrixRotY( &rotY, 45.0 );
+ // NvRenderTestMatrixRotX( &rotX, 90.0 );
+ mv = rotY * rotX;
+ mvp = mv * p;
+
+ // create shaders
+ std::string vtxProg;
+ std::string frgProg;
+ std::string tcProg;
+ std::string teProg;
+ NVRenderVertFragCompilationResult compResult = context->CompileSource(
+ "NVRenderTestTessellation shader", toRef(vertPhongShader(vtxProg, isGLESContext(context))),
+ toRef(fragPhongShader(frgProg, isGLESContext(context))),
+ toRef(tessPhongControlShader(tcProg, isGLESContext(context))),
+ toRef(tessPhongEvaluationShader(teProg, isGLESContext(context))));
+ if (!compResult.mShader) {
+ return false;
+ }
+
+ unsigned int curY = 0;
+ unsigned int curX = _curTest;
+ if (_curTest >= _maxColumn) {
+ curY = (_curTest / _maxColumn);
+ curX = (_curTest % _maxColumn);
+ }
+
+ // set viewport
+ context->SetViewport(NVRenderRect(curX * _cellSize, curY * _cellSize, _cellSize, _cellSize));
+
+ // this is the layout
+ NVRenderVertexBufferEntry entries[] = {
+ NVRenderVertexBufferEntry("attr_pos", NVRenderComponentTypes::QT3DSF32, 3, 0),
+ NVRenderVertexBufferEntry("attr_norm", NVRenderComponentTypes::QT3DSF32, 3, 12),
+ };
+
+ QT3DSU32 bufSize = 3 * sizeof(Vertex);
+ NVDataRef<QT3DSU8> vertData((QT3DSU8 *)vertexPositions, bufSize);
+ mVertexBuffer = context->CreateVertexBuffer(NVRenderBufferUsageType::Static, bufSize,
+ 6 * sizeof(QT3DSF32), vertData);
+ if (!mVertexBuffer) {
+ qWarning() << "NVRenderTestFboMsaa: Failed to create vertex buffer";
+ return false;
+ }
+
+ // create our attribute layout
+ mAttribLayout = context->CreateAttributeLayout(toConstDataRef(entries, 2));
+ // create input Assembler
+ QT3DSU32 strides = mVertexBuffer->GetStride();
+ QT3DSU32 offsets = 0;
+ mInputAssembler = context->CreateInputAssembler(
+ mAttribLayout, toConstDataRef(&mVertexBuffer.mPtr, 1), mIndexBuffer.mPtr,
+ toConstDataRef(&strides, 1), toConstDataRef(&offsets, 1), NVRenderDrawMode::Patches, 3);
+ if (!mInputAssembler) {
+ qWarning() << "NVRenderTestFboMsaa: Failed to create input assembler";
+ return false;
+ }
+
+ // make input assembler active
+ context->SetInputAssembler(mInputAssembler);
+ // set program
+ context->SetActiveShader(compResult.mShader);
+ compResult.mShader->SetPropertyValue("mat_mvp", mvp);
+ // set color
+ compResult.mShader->SetPropertyValue("color", color);
+ // set tessellation values
+ float tessLevels = 8.0;
+ compResult.mShader->SetPropertyValue("tessLevels", tessLevels);
+ float tessBlend = 1.0;
+ compResult.mShader->SetPropertyValue("tessBlend", tessBlend);
+
+ context->SetDepthTestEnabled(true);
+ context->SetDepthWriteEnabled(true);
+
+ // draw
+ context->Draw(mInputAssembler->GetPrimitiveType(), 3, 0);
+
+ context->SetActiveShader(0);
+ compResult.mShader->release();
+
+ return true;
+}
+
+////////////////////////////////
+// performance test
+////////////////////////////////
+bool NVRenderTestTessellation::runPerformance(NVRenderContext *context, userContextData *pUserData)
+{
+ return true;
+}
+
+////////////////////////////////
+// test cleanup
+////////////////////////////////
+void NVRenderTestTessellation::cleanup(NVRenderContext *context, userContextData *pUserData)
+{
+ context->SetClearColor(QT3DSVec4(.0f, .0f, .0f, 0.f));
+ // dummy
+ context->SetViewport(NVRenderRect(0, 0, pUserData->winWidth, pUserData->winHeight));
+}
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