diff options
| author | Brad Davis <[email protected]> | 2013-06-27 11:25:32 -0800 |
|---|---|---|
| committer | Brad Davis <[email protected]> | 2013-06-28 10:47:29 -0700 |
| commit | ebefcc885f74461cd0e3f19b5ae3622dc6cf6dbc (patch) | |
| tree | 2b16db7350fce54c2e6c1b1c4020d67419cb1164 /Samples/CommonSrc/Render/Render_Device.cpp | |
| parent | 0ade748e1845694c5cbe562fb823e56f09773e27 (diff) | |
SDK 0.2.2
Diffstat (limited to 'Samples/CommonSrc/Render/Render_Device.cpp')
| -rw-r--r-- | Samples/CommonSrc/Render/Render_Device.cpp | 1033 |
1 files changed, 1033 insertions, 0 deletions
diff --git a/Samples/CommonSrc/Render/Render_Device.cpp b/Samples/CommonSrc/Render/Render_Device.cpp new file mode 100644 index 0000000..d1687d5 --- /dev/null +++ b/Samples/CommonSrc/Render/Render_Device.cpp @@ -0,0 +1,1033 @@ +/************************************************************************************
+
+Filename : Render_Device.cpp
+Content : Platform renderer for simple scene graph - implementation
+Created : September 6, 2012
+Authors : Andrew Reisse
+
+Copyright : Copyright 2012 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#include "../Render/Render_Device.h"
+#include "../Render/Render_Font.h"
+
+#include "Kernel/OVR_Log.h"
+
+namespace OVR { namespace Render {
+
+void Model::Render(const Matrix4f& ltw, RenderDevice* ren)
+{
+ if(Visible)
+ {
+ Matrix4f m = ltw * GetMatrix();
+ ren->Render(m, this);
+ }
+}
+
+void Container::Render(const Matrix4f& ltw, RenderDevice* ren)
+{
+ Matrix4f m = ltw * GetMatrix();
+ for(unsigned i = 0; i < Nodes.GetSize(); i++)
+ {
+ Nodes[i]->Render(m, ren);
+ }
+}
+
+Matrix4f SceneView::GetViewMatrix() const
+{
+ Matrix4f view = Matrix4f(GetOrientation().Conj()) * Matrix4f::Translation(GetPosition());
+ return view;
+}
+
+void LightingParams::Update(const Matrix4f& view, const Vector4f* SceneLightPos)
+{
+ Version++;
+ for (int i = 0; i < LightCount; i++)
+ {
+ LightPos[i] = view.Transform(SceneLightPos[i]);
+ }
+}
+
+void Scene::Render(RenderDevice* ren, const Matrix4f& view)
+{
+ Lighting.Update(view, LightPos);
+
+ ren->SetLighting(&Lighting);
+
+ World.Render(view, ren);
+}
+
+
+
+UInt16 CubeIndices[] =
+{
+ 0, 1, 3,
+ 3, 1, 2,
+
+ 5, 4, 6,
+ 6, 4, 7,
+
+ 8, 9, 11,
+ 11, 9, 10,
+
+ 13, 12, 14,
+ 14, 12, 15,
+
+ 16, 17, 19,
+ 19, 17, 18,
+
+ 21, 20, 22,
+ 22, 20, 23
+};
+
+// Colors are specified for planes perpendicular to the axis
+// For example, "xColor" is the color of the y-z plane
+Model* Model::CreateAxisFaceColorBox(float x1, float x2, Color xcolor,
+ float y1, float y2, Color ycolor,
+ float z1, float z2, Color zcolor)
+{
+ float t;
+
+ if(x1 > x2)
+ {
+ t = x1;
+ x1 = x2;
+ x2 = t;
+ }
+ if(y1 > y2)
+ {
+ t = y1;
+ y1 = y2;
+ y2 = t;
+ }
+ if(z1 > z2)
+ {
+ t = z1;
+ z1 = z2;
+ z2 = t;
+ }
+
+ Model* box = new Model();
+
+ UInt16 startIndex = 0;
+ // Cube
+ startIndex =
+ box->AddVertex(Vector3f(x1, y2, z1), ycolor);
+ box->AddVertex(Vector3f(x2, y2, z1), ycolor);
+ box->AddVertex(Vector3f(x2, y2, z2), ycolor);
+ box->AddVertex(Vector3f(x1, y2, z2), ycolor);
+
+ box->AddVertex(Vector3f(x1, y1, z1), ycolor);
+ box->AddVertex(Vector3f(x2, y1, z1), ycolor);
+ box->AddVertex(Vector3f(x2, y1, z2), ycolor);
+ box->AddVertex(Vector3f(x1, y1, z2), ycolor);
+
+ box->AddVertex(Vector3f(x1, y1, z2), xcolor);
+ box->AddVertex(Vector3f(x1, y1, z1), xcolor);
+ box->AddVertex(Vector3f(x1, y2, z1), xcolor);
+ box->AddVertex(Vector3f(x1, y2, z2), xcolor);
+
+ box->AddVertex(Vector3f(x2, y1, z2), xcolor);
+ box->AddVertex(Vector3f(x2, y1, z1), xcolor);
+ box->AddVertex(Vector3f(x2, y2, z1), xcolor);
+ box->AddVertex(Vector3f(x2, y2, z2), xcolor);
+
+ box->AddVertex(Vector3f(x1, y1, z1), zcolor);
+ box->AddVertex(Vector3f(x2, y1, z1), zcolor);
+ box->AddVertex(Vector3f(x2, y2, z1), zcolor);
+ box->AddVertex(Vector3f(x1, y2, z1), zcolor);
+
+ box->AddVertex(Vector3f(x1, y1, z2), zcolor);
+ box->AddVertex(Vector3f(x2, y1, z2), zcolor);
+ box->AddVertex(Vector3f(x2, y2, z2), zcolor);
+ box->AddVertex(Vector3f(x1, y2, z2), zcolor);
+
+
+ enum
+ {
+ // CubeVertexCount = sizeof(CubeVertices)/sizeof(CubeVertices[0]),
+ CubeIndexCount = sizeof(CubeIndices) / sizeof(CubeIndices[0])
+ };
+
+ // Renumber indices
+ for(int i = 0; i < CubeIndexCount / 3; i++)
+ {
+ box->AddTriangle(CubeIndices[i * 3] + startIndex,
+ CubeIndices[i * 3 + 1] + startIndex,
+ CubeIndices[i * 3 + 2] + startIndex);
+ }
+
+ return box;
+}
+
+void Model::AddSolidColorBox(float x1, float y1, float z1,
+ float x2, float y2, float z2,
+ Color c)
+{
+ float t;
+
+ if(x1 > x2)
+ {
+ t = x1;
+ x1 = x2;
+ x2 = t;
+ }
+ if(y1 > y2)
+ {
+ t = y1;
+ y1 = y2;
+ y2 = t;
+ }
+ if(z1 > z2)
+ {
+ t = z1;
+ z1 = z2;
+ z2 = t;
+ }
+
+ // Cube vertices and their normals.
+ Vector3f CubeVertices[][3] =
+ {
+ Vector3f(x1, y2, z1), Vector3f(z1, x1), Vector3f(0.0f, 1.0f, 0.0f),
+ Vector3f(x2, y2, z1), Vector3f(z1, x2), Vector3f(0.0f, 1.0f, 0.0f),
+ Vector3f(x2, y2, z2), Vector3f(z2, x2), Vector3f(0.0f, 1.0f, 0.0f),
+ Vector3f(x1, y2, z2), Vector3f(z2, x1), Vector3f(0.0f, 1.0f, 0.0f),
+
+ Vector3f(x1, y1, z1), Vector3f(z1, x1), Vector3f(0.0f, -1.0f, 0.0f),
+ Vector3f(x2, y1, z1), Vector3f(z1, x2), Vector3f(0.0f, -1.0f, 0.0f),
+ Vector3f(x2, y1, z2), Vector3f(z2, x2), Vector3f(0.0f, -1.0f, 0.0f),
+ Vector3f(x1, y1, z2), Vector3f(z2, x1), Vector3f(0.0f, -1.0f, 0.0f),
+
+ Vector3f(x1, y1, z2), Vector3f(z2, y1), Vector3f(-1.0f, 0.0f, 0.0f),
+ Vector3f(x1, y1, z1), Vector3f(z1, y1), Vector3f(-1.0f, 0.0f, 0.0f),
+ Vector3f(x1, y2, z1), Vector3f(z1, y2), Vector3f(-1.0f, 0.0f, 0.0f),
+ Vector3f(x1, y2, z2), Vector3f(z2, y2), Vector3f(-1.0f, 0.0f, 0.0f),
+
+ Vector3f(x2, y1, z2), Vector3f(z2, y1), Vector3f(1.0f, 0.0f, 0.0f),
+ Vector3f(x2, y1, z1), Vector3f(z1, y1), Vector3f(1.0f, 0.0f, 0.0f),
+ Vector3f(x2, y2, z1), Vector3f(z1, y2), Vector3f(1.0f, 0.0f, 0.0f),
+ Vector3f(x2, y2, z2), Vector3f(z2, y2), Vector3f(1.0f, 0.0f, 0.0f),
+
+ Vector3f(x1, y1, z1), Vector3f(x1, y1), Vector3f(0.0f, 0.0f, -1.0f),
+ Vector3f(x2, y1, z1), Vector3f(x2, y1), Vector3f(0.0f, 0.0f, -1.0f),
+ Vector3f(x2, y2, z1), Vector3f(x2, y2), Vector3f(0.0f, 0.0f, -1.0f),
+ Vector3f(x1, y2, z1), Vector3f(x1, y2), Vector3f(0.0f, 0.0f, -1.0f),
+
+ Vector3f(x1, y1, z2), Vector3f(x1, y1), Vector3f(0.0f, 0.0f, 1.0f),
+ Vector3f(x2, y1, z2), Vector3f(x2, y1), Vector3f(0.0f, 0.0f, 1.0f),
+ Vector3f(x2, y2, z2), Vector3f(x2, y2), Vector3f(0.0f, 0.0f, 1.0f),
+ Vector3f(x1, y2, z2), Vector3f(x1, y2), Vector3f(0.0f, 0.0f, 1.0f)
+ };
+
+
+ UInt16 startIndex = GetNextVertexIndex();
+
+ enum
+ {
+ CubeVertexCount = sizeof(CubeVertices) / sizeof(CubeVertices[0]),
+ CubeIndexCount = sizeof(CubeIndices) / sizeof(CubeIndices[0])
+ };
+
+ for(int v = 0; v < CubeVertexCount; v++)
+ {
+ AddVertex(Vertex(CubeVertices[v][0], c, CubeVertices[v][1].x, CubeVertices[v][1].y, CubeVertices[v][2]));
+ }
+
+ // Renumber indices
+ for(int i = 0; i < CubeIndexCount / 3; i++)
+ {
+ AddTriangle(CubeIndices[i * 3] + startIndex,
+ CubeIndices[i * 3 + 1] + startIndex,
+ CubeIndices[i * 3 + 2] + startIndex);
+ }
+}
+
+
+
+Model* Model::CreateBox(Color c, Vector3f origin, Vector3f size)
+{
+ Model *box = new Model();
+ Vector3f s = size * 0.5f;
+
+ box->AddVertex(-s.x, s.y, -s.z, c, 0, 1, 0, 0, -1);
+ box->AddVertex(s.x, s.y, -s.z, c, 1, 1, 0, 0, -1);
+ box->AddVertex(s.x, -s.y, -s.z, c, 1, 0, 0, 0, -1);
+ box->AddVertex(-s.x, -s.y, -s.z, c, 0, 0, 0, 0, -1);
+ box->AddTriangle(2, 1, 0);
+ box->AddTriangle(0, 3, 2);
+
+ box->AddVertex(s.x, s.y, s.z, c, 1, 1, 0, 0, 1);
+ box->AddVertex(-s.x, s.y, s.z, c, 0, 1, 0, 0, 1);
+ box->AddVertex(-s.x, -s.y, s.z, c, 0, 0, 0, 0, 1);
+ box->AddVertex(s.x, -s.y, s.z, c, 1, 0, 0, 0, 1);
+ box->AddTriangle(6, 5, 4);
+ box->AddTriangle(4, 7, 6);
+
+ box->AddVertex(-s.x, s.y, -s.z, c, 1, 0, -1, 0, 0);
+ box->AddVertex(-s.x, s.y, s.z, c, 1, 1, -1, 0, 0);
+ box->AddVertex(-s.x, -s.y, s.z, c, 0, 1, -1, 0, 0);
+ box->AddVertex(-s.x, -s.y, -s.z, c, 0, 0, -1, 0, 0);
+ box->AddTriangle(10, 11, 8);
+ box->AddTriangle(8, 9, 10);
+
+ box->AddVertex(s.x, s.y, -s.z, c, 1, 0, 1, 0, 0);
+ box->AddVertex(s.x, -s.y, -s.z, c, 0, 0, 1, 0, 0);
+ box->AddVertex(s.x, -s.y, s.z, c, 0, 1, 1, 0, 0);
+ box->AddVertex(s.x, s.y, s.z, c, 1, 1, 1, 0, 0);
+ box->AddTriangle(14, 15, 12);
+ box->AddTriangle(12, 13, 14);
+
+ box->AddVertex(-s.x, -s.y, s.z, c, 0, 1, 0, -1, 0);
+ box->AddVertex(s.x, -s.y, s.z, c, 1, 1, 0, -1, 0);
+ box->AddVertex(s.x, -s.y, -s.z, c, 1, 0, 0, -1, 0);
+ box->AddVertex(-s.x, -s.y, -s.z, c, 0, 0, 0, -1, 0);
+ box->AddTriangle(18, 19, 16);
+ box->AddTriangle(16, 17, 18);
+
+ box->AddVertex(-s.x, s.y, -s.z, c, 0, 0, 0, 1, 0);
+ box->AddVertex(s.x, s.y, -s.z, c, 1, 0, 0, 1, 0);
+ box->AddVertex(s.x, s.y, s.z, c, 1, 1, 0, 1, 0);
+ box->AddVertex(-s.x, s.y, s.z, c, 0, 1, 0, 1, 0);
+ box->AddTriangle(20, 21, 22);
+ box->AddTriangle(22, 23, 20);
+
+ box->SetPosition(origin);
+ return box;
+}
+
+// Triangulation of a cylinder centered at the origin
+Model* Model::CreateCylinder(Color color, Vector3f origin, float height, float radius, int sides)
+{
+ Model *cyl = new Model();
+ float halfht = height * 0.5f;
+ for(UInt16 i = 0; i < sides; i++)
+ {
+ float x = cosf(Math<float>::TwoPi * i / float(sides));
+ float y = sinf(Math<float>::TwoPi * i / float(sides));
+
+ cyl->AddVertex(radius * x, radius * y, halfht, color, x + 1, y, 0, 0, 1);
+ cyl->AddVertex(radius * x, radius * y, -1.0f*halfht, color, x, y, 0, 0, -1);
+
+ UInt16 j = 0;
+ if(i < sides - 1)
+ {
+ j = i + 1;
+ cyl->AddTriangle(0, i * 4 + 4, i * 4);
+ cyl->AddTriangle(1, i * 4 + 1, i * 4 + 5);
+ }
+
+ float nx = cosf(Math<float>::Pi * (0.5f + 2.0f * i / float(sides)));
+ float ny = sinf(Math<float>::Pi * (0.5f + 2.0f * i / float(sides)));
+ cyl->AddVertex(radius * x, radius * y, halfht, color, x + 1, y, nx, ny, 0);
+ cyl->AddVertex(radius * x, radius * y, -1.0f*halfht, color, x, y, nx, ny, 0);
+
+ cyl->AddTriangle(i * 4 + 2, j * 4 + 2, i * 4 + 3);
+ cyl->AddTriangle(i * 4 + 3, j * 4 + 2, j * 4 + 3);
+ }
+ cyl->SetPosition(origin);
+ return cyl;
+};
+
+//Triangulation of a cone centered at the origin
+Model* Model::CreateCone(Color color, Vector3f origin, float height, float radius, int sides)
+{
+ Model *cone = new Model();
+ float halfht = height * 0.5f;
+ cone->AddVertex(0.0f, 0.0f, -1.0f*halfht, color, 0, 0, 0, 0, -1);
+
+ for(UInt16 i = 0; i < sides; i++)
+ {
+ float x = cosf(Math<float>::TwoPi * i / float(sides));
+ float y = sinf(Math<float>::TwoPi * i / float(sides));
+
+ cone->AddVertex(radius * x, radius * y, -1.0f*halfht, color, 0, 0, 0, 0, -1);
+
+ UInt16 j = 1;
+ if(i < sides - 1)
+ {
+ j = i + 1;
+ }
+
+ float next_x = cosf(Math<float>::TwoPi * j / float(sides));
+ float next_y = sinf(Math<float>::TwoPi * j / float(sides));
+
+ Vector3f normal = Vector3f(x, y, -halfht).Cross(Vector3f(next_x, next_y, -halfht));
+
+ cone->AddVertex(0.0f, 0.0f, halfht, color, 1, 0, normal.x, normal.y, normal.z);
+ cone->AddVertex(radius * x, radius * y, -1.0f*halfht, color, 0, 0, normal.x, normal.y, normal.z);
+
+ cone->AddTriangle(0, 3*i + 1, 3*j + 1);
+ cone->AddTriangle(3*i + 2, 3*j + 3, 3*i + 3);
+ }
+ cone->SetPosition(origin);
+ return cone;
+};
+
+//Triangulation of a sphere centered at the origin
+Model* Model::CreateSphere(Color color, Vector3f origin, float radius, int sides)
+{
+ Model *sphere = new Model();
+ UInt16 usides = (UInt16) sides;
+ UInt16 halfsides = usides/2;
+
+ for(UInt16 k = 0; k < halfsides; k++) {
+
+ float z = cosf(Math<float>::Pi * k / float(halfsides));
+ float z_r = sinf(Math<float>::Pi * k / float(halfsides)); // the radius of the cross circle with coordinate z
+
+ if (k == 0)
+ { // add north and south poles
+ sphere->AddVertex(0.0f, 0.0f, radius, color, 0, 0, 0, 0, 1);
+ sphere->AddVertex(0.0f, 0.0f, -radius, color, 1, 1, 0, 0, -1);
+ }
+ else
+ {
+ for(UInt16 i = 0; i < sides; i++)
+ {
+ float x = cosf(Math<float>::TwoPi * i / float(sides)) * z_r;
+ float y = sinf(Math<float>::TwoPi * i / float(sides)) * z_r;
+
+ UInt16 j = 0;
+ if(i < sides - 1)
+ {
+ j = i + 1;
+ }
+
+ sphere->AddVertex(radius * x, radius * y, radius * z, color, 0, 1, x, y, z);
+
+ UInt16 indi = 2 + (k -1)*usides + i;
+ UInt16 indj = 2 + (k -1)*usides + j;
+ if (k == 1) // NorthPole
+ sphere->AddTriangle(0, j + 2, i + 2);
+ else if (k == halfsides - 1) //SouthPole
+ {
+ sphere->AddTriangle(1, indi, indj);
+ sphere->AddTriangle(indi, indi - usides, indj);
+ sphere->AddTriangle(indi - usides, indj - usides, indj);
+ }
+ else
+ {
+ sphere->AddTriangle(indi, indi - usides, indj);
+ sphere->AddTriangle(indi - usides, indj - usides, indj);
+ }
+ }
+ } // end else
+ }
+ sphere->SetPosition(origin);
+ return sphere;
+};
+
+Model* Model::CreateGrid(Vector3f origin, Vector3f stepx, Vector3f stepy,
+ int halfx, int halfy, int nmajor, Color minor, Color major)
+{
+ Model* grid = new Model(Prim_Lines);
+ float halfxf = (float)halfx;
+ float halfyf = (float)halfy;
+
+ for(int jn = 0; jn <= halfy; jn++)
+ {
+ float j = (float)jn;
+
+ grid->AddLine(grid->AddVertex((stepx * -halfxf) + (stepy * j), (jn % nmajor) ? minor : major, 0, 0.5f),
+ grid->AddVertex((stepx * halfxf) + (stepy * j), (jn % nmajor) ? minor : major, 1, 0.5f));
+
+ if(j)
+ grid->AddLine(grid->AddVertex((stepx * -halfxf) + (stepy * -j), (jn % nmajor) ? minor : major, 0, 0.5f),
+ grid->AddVertex((stepx * halfxf) + (stepy * -j), (jn % nmajor) ? minor : major, 1, 0.5f));
+ }
+
+ for(int in = 0; in <= halfx; in++)
+ {
+ float i = (float)in;
+
+ grid->AddLine(grid->AddVertex((stepx * i) + (stepy * -halfyf), (in % nmajor) ? minor : major, 0, 0.5f),
+ grid->AddVertex((stepx * i) + (stepy * halfyf), (in % nmajor) ? minor : major, 1, 0.5f));
+
+ if(i)
+ grid->AddLine(grid->AddVertex((stepx * -i) + (stepy * -halfyf), (in % nmajor) ? minor : major, 0, 0.5f),
+ grid->AddVertex((stepx * -i) + (stepy * halfyf), (in % nmajor) ? minor : major, 1, 0.5f));
+ }
+
+ grid->SetPosition(origin);
+ return grid;
+}
+
+
+//-------------------------------------------------------------------------------------
+
+
+void ShaderFill::Set(PrimitiveType prim) const
+{
+ Shaders->Set(prim);
+ for(int i = 0; i < 8; i++)
+ if(Textures[i])
+ {
+ Textures[i]->Set(i);
+ }
+}
+
+
+
+//-------------------------------------------------------------------------------------
+// ***** Rendering
+
+
+RenderDevice::RenderDevice()
+ : CurPostProcess(PostProcess_None),
+ SceneColorTexW(0), SceneColorTexH(0),
+ SceneRenderScale(1),
+
+ Distortion(1.0f, 0.18f, 0.115f),
+ DistortionClearColor(0, 0, 0),
+ PostProcessShaderActive(PostProcessShader_DistortionAndChromAb),
+ TotalTextureMemoryUsage(0)
+{
+ PostProcessShaderRequested = PostProcessShaderActive;
+}
+
+Fill* RenderDevice::CreateTextureFill(Render::Texture* t, bool useAlpha)
+{
+ ShaderSet* shaders = CreateShaderSet();
+ shaders->SetShader(LoadBuiltinShader(Shader_Vertex, VShader_MVP));
+ shaders->SetShader(LoadBuiltinShader(Shader_Fragment, useAlpha ? FShader_AlphaTexture : FShader_Texture));
+ Fill* f = new ShaderFill(*shaders);
+ f->SetTexture(0, t);
+ return f;
+}
+
+void LightingParams::Set(ShaderSet* s) const
+{
+ s->SetUniform4fv("Ambient", 1, &Ambient);
+ s->SetUniform1f("LightCount", LightCount);
+ s->SetUniform4fv("LightPos", (int)LightCount, LightPos);
+ s->SetUniform4fv("LightColor", (int)LightCount, LightColor);
+}
+
+void RenderDevice::SetLighting(const LightingParams* lt)
+{
+ if (!LightingBuffer)
+ LightingBuffer = *CreateBuffer();
+
+ LightingBuffer->Data(Buffer_Uniform, lt, sizeof(LightingParams));
+ SetCommonUniformBuffer(1, LightingBuffer);
+}
+
+float RenderDevice::MeasureText(const Font* font, const char* str, float size, float* strsize)
+{
+ UPInt length = strlen(str);
+ float w = 0;
+ float xp = 0;
+ float yp = 0;
+
+ for (UPInt i = 0; i < length; i++)
+ {
+ if(str[i] == '\n')
+ {
+ yp += font->lineheight;
+ if(xp > w)
+ {
+ w = xp;
+ }
+ xp = 0;
+ continue;
+ }
+
+ // Tab followed by a numbers sets position to specified offset.
+ if(str[i] == '\t')
+ {
+ char *p = 0;
+ float tabPixels = (float)OVR_strtoq(str + i + 1, &p, 10);
+ i += p - (str + i + 1);
+ xp = tabPixels;
+ }
+ else
+ {
+ const Font::Char* ch = &font->chars[str[i]];
+ xp += ch->advance;
+ }
+ }
+
+ if(xp > w)
+ {
+ w = xp;
+ }
+
+ if(strsize)
+ {
+ strsize[0] = (size / font->lineheight) * w;
+ strsize[1] = (size / font->lineheight) * (yp + font->lineheight);
+ }
+ return (size / font->lineheight) * w;
+}
+
+void RenderDevice::RenderText(const Font* font, const char* str,
+ float x, float y, float size, Color c)
+{
+ if(!pTextVertexBuffer)
+ {
+ pTextVertexBuffer = *CreateBuffer();
+ if(!pTextVertexBuffer)
+ {
+ return;
+ }
+ }
+
+ if(!font->fill)
+ {
+ font->fill = CreateTextureFill(Ptr<Texture>(
+ *CreateTexture(Texture_R, font->twidth, font->theight, font->tex)), true);
+ }
+
+ UPInt length = strlen(str);
+
+ pTextVertexBuffer->Data(Buffer_Vertex, NULL, length * 6 * sizeof(Vertex));
+ Vertex* vertices = (Vertex*)pTextVertexBuffer->Map(0, length * 6 * sizeof(Vertex), Map_Discard);
+ if(!vertices)
+ {
+ return;
+ }
+
+ Matrix4f m = Matrix4f(size / font->lineheight, 0, 0, 0,
+ 0, size / font->lineheight, 0, 0,
+ 0, 0, 0, 0,
+ x, y, 0, 1).Transposed();
+
+ float xp = 0, yp = (float)font->ascent;
+ int ivertex = 0;
+
+ for (UPInt i = 0; i < length; i++)
+ {
+ if(str[i] == '\n')
+ {
+ yp += font->lineheight;
+ xp = 0;
+ continue;
+ }
+ // Tab followed by a numbers sets position to specified offset.
+ if(str[i] == '\t')
+ {
+ char *p = 0;
+ float tabPixels = (float)OVR_strtoq(str + i + 1, &p, 10);
+ i += p - (str + i + 1);
+ xp = tabPixels;
+ continue;
+ }
+
+ const Font::Char* ch = &font->chars[str[i]];
+ Vertex* chv = &vertices[ivertex];
+ for(int j = 0; j < 6; j++)
+ {
+ chv[j].C = c;
+ }
+ float x = xp + ch->x;
+ float y = yp - ch->y;
+ float cx = font->twidth * (ch->u2 - ch->u1);
+ float cy = font->theight * (ch->v2 - ch->v1);
+ chv[0] = Vertex(Vector3f(x, y, 0), c, ch->u1, ch->v1);
+ chv[1] = Vertex(Vector3f(x + cx, y, 0), c, ch->u2, ch->v1);
+ chv[2] = Vertex(Vector3f(x + cx, cy + y, 0), c, ch->u2, ch->v2);
+ chv[3] = Vertex(Vector3f(x, y, 0), c, ch->u1, ch->v1);
+ chv[4] = Vertex(Vector3f(x + cx, cy + y, 0), c, ch->u2, ch->v2);
+ chv[5] = Vertex(Vector3f(x, y + cy, 0), c, ch->u1, ch->v2);
+ ivertex += 6;
+
+ xp += ch->advance;
+ }
+
+ pTextVertexBuffer->Unmap(vertices);
+
+ Render(font->fill, pTextVertexBuffer, NULL, m, 0, ivertex, Prim_Triangles);
+}
+
+void RenderDevice::FillRect(float left, float top, float right, float bottom, Color c)
+{
+ if(!pTextVertexBuffer)
+ {
+ pTextVertexBuffer = *CreateBuffer();
+ if(!pTextVertexBuffer)
+ {
+ return;
+ }
+ }
+
+ // Get!!
+ Fill* fill = CreateSimpleFill();
+
+ pTextVertexBuffer->Data(Buffer_Vertex, NULL, 6 * sizeof(Vertex));
+ Vertex* vertices = (Vertex*)pTextVertexBuffer->Map(0, 6 * sizeof(Vertex), Map_Discard);
+ if(!vertices)
+ {
+ return;
+ }
+
+ vertices[0] = Vertex(Vector3f(left, top, 0.0f), c);
+ vertices[1] = Vertex(Vector3f(right, top, 0), c);
+ vertices[2] = Vertex(Vector3f(left, bottom, 0), c);
+ vertices[3] = Vertex(Vector3f(left, bottom, 0), c);
+ vertices[4] = Vertex(Vector3f(right, top, 0), c);
+ vertices[5] = Vertex(Vector3f(right, bottom, 0), c);
+
+ pTextVertexBuffer->Unmap(vertices);
+
+ Render(fill, pTextVertexBuffer, NULL, Matrix4f(), 0, 6, Prim_Triangles);
+}
+
+/*
+void RenderDevice::GetStereoViewports(const Viewport& in, Viewport* out) const
+{
+ out[0] = out[1] = in;
+ if (StereoBufferMode == Stereo_SplitH)
+ {
+ out[0].w = out[1].w = in.w / 2;
+ out[1].x += WindowWidth / 2;
+ }
+}
+*/
+
+void RenderDevice::SetSceneRenderScale(float ss)
+{
+ SceneRenderScale = ss;
+ pSceneColorTex = NULL;
+}
+
+void RenderDevice::SetViewport(const Viewport& vp)
+{
+ VP = vp;
+
+ if(CurPostProcess == PostProcess_Distortion)
+ {
+ Viewport svp = vp;
+ svp.w = (int)ceil(SceneRenderScale * vp.w);
+ svp.h = (int)ceil(SceneRenderScale * vp.h);
+ svp.x = (int)ceil(SceneRenderScale * vp.x);
+ svp.y = (int)ceil(SceneRenderScale * vp.y);
+ SetRealViewport(svp);
+ }
+ else
+ {
+ SetRealViewport(vp);
+ }
+}
+
+
+bool RenderDevice::initPostProcessSupport(PostProcessType pptype)
+{
+ if(pptype != PostProcess_Distortion)
+ {
+ return true;
+ }
+
+
+ if (PostProcessShaderRequested != PostProcessShaderActive)
+ {
+ pPostProcessShader.Clear();
+ PostProcessShaderActive = PostProcessShaderRequested;
+ }
+
+ if (!pPostProcessShader)
+ {
+ Shader *vs = LoadBuiltinShader(Shader_Vertex, VShader_PostProcess);
+
+ Shader *ppfs = NULL;
+
+ if (PostProcessShaderActive == PostProcessShader_Distortion)
+ {
+ ppfs = LoadBuiltinShader(Shader_Fragment, FShader_PostProcess);
+ }
+ else if (PostProcessShaderActive == PostProcessShader_DistortionAndChromAb)
+ {
+ ppfs = LoadBuiltinShader(Shader_Fragment, FShader_PostProcessWithChromAb);
+ }
+ else
+ OVR_ASSERT(false);
+
+ pPostProcessShader = *CreateShaderSet();
+ pPostProcessShader->SetShader(vs);
+ pPostProcessShader->SetShader(ppfs);
+ }
+
+
+ int texw = (int)ceil(SceneRenderScale * WindowWidth),
+ texh = (int)ceil(SceneRenderScale * WindowHeight);
+
+ // If pSceneColorTex is already created and is of correct size, we are done.
+ // It's important to check width/height in case window size changed.
+ if (pSceneColorTex && (texw == SceneColorTexW) && (texh == SceneColorTexH))
+ {
+ return true;
+ }
+
+ pSceneColorTex = *CreateTexture(Texture_RGBA | Texture_RenderTarget | Params.Multisample,
+ texw, texh, NULL);
+ if(!pSceneColorTex)
+ {
+ return false;
+ }
+ SceneColorTexW = texw;
+ SceneColorTexH = texh;
+ pSceneColorTex->SetSampleMode(Sample_ClampBorder | Sample_Linear);
+
+
+ if(!pFullScreenVertexBuffer)
+ {
+ pFullScreenVertexBuffer = *CreateBuffer();
+ const Render::Vertex QuadVertices[] =
+ {
+ Vertex(Vector3f(0, 1, 0), Color(1, 1, 1, 1), 0, 0),
+ Vertex(Vector3f(1, 1, 0), Color(1, 1, 1, 1), 1, 0),
+ Vertex(Vector3f(0, 0, 0), Color(1, 1, 1, 1), 0, 1),
+ Vertex(Vector3f(1, 0, 0), Color(1, 1, 1, 1), 1, 1)
+ };
+ pFullScreenVertexBuffer->Data(Buffer_Vertex, QuadVertices, sizeof(QuadVertices));
+ }
+ return true;
+}
+
+void RenderDevice::SetProjection(const Matrix4f& proj)
+{
+ Proj = proj;
+ SetWorldUniforms(proj);
+}
+
+void RenderDevice::BeginScene(PostProcessType pptype)
+{
+ BeginRendering();
+
+ if((pptype != PostProcess_None) && initPostProcessSupport(pptype))
+ {
+ CurPostProcess = pptype;
+ }
+ else
+ {
+ CurPostProcess = PostProcess_None;
+ }
+
+ if(CurPostProcess == PostProcess_Distortion)
+ {
+ SetRenderTarget(pSceneColorTex);
+ SetViewport(VP);
+ }
+ else
+ {
+ SetRenderTarget(0);
+ }
+
+ SetWorldUniforms(Proj);
+ SetExtraShaders(NULL);
+}
+
+void RenderDevice::FinishScene()
+{
+ SetExtraShaders(0);
+ if(CurPostProcess == PostProcess_None)
+ {
+ return;
+ }
+
+ SetRenderTarget(0);
+ SetRealViewport(VP);
+ FinishScene1();
+
+ CurPostProcess = PostProcess_None;
+}
+
+
+
+void RenderDevice::FinishScene1()
+{
+ float r, g, b, a;
+ DistortionClearColor.GetRGBA(&r, &g, &b, &a);
+ Clear(r, g, b, a);
+
+ float w = float(VP.w) / float(WindowWidth),
+ h = float(VP.h) / float(WindowHeight),
+ x = float(VP.x) / float(WindowWidth),
+ y = float(VP.y) / float(WindowHeight);
+
+ float as = float(VP.w) / float(VP.h);
+
+ // We are using 1/4 of DistortionCenter offset value here, since it is
+ // relative to [-1,1] range that gets mapped to [0, 0.5].
+ pPostProcessShader->SetUniform2f("LensCenter",
+ x + (w + Distortion.XCenterOffset * 0.5f)*0.5f, y + h*0.5f);
+ pPostProcessShader->SetUniform2f("ScreenCenter", x + w*0.5f, y + h*0.5f);
+
+ // MA: This is more correct but we would need higher-res texture vertically; we should adopt this
+ // once we have asymmetric input texture scale.
+ float scaleFactor = 1.0f / Distortion.Scale;
+
+ pPostProcessShader->SetUniform2f("Scale", (w/2) * scaleFactor, (h/2) * scaleFactor * as);
+ pPostProcessShader->SetUniform2f("ScaleIn", (2/w), (2/h) / as);
+
+ pPostProcessShader->SetUniform4f("HmdWarpParam",
+ Distortion.K[0], Distortion.K[1], Distortion.K[2], Distortion.K[3]);
+
+ if (PostProcessShaderRequested == PostProcessShader_DistortionAndChromAb)
+ {
+ pPostProcessShader->SetUniform4f("ChromAbParam",
+ Distortion.ChromaticAberration[0],
+ Distortion.ChromaticAberration[1],
+ Distortion.ChromaticAberration[2],
+ Distortion.ChromaticAberration[3]);
+ }
+
+ Matrix4f texm(w, 0, 0, x,
+ 0, h, 0, y,
+ 0, 0, 0, 0,
+ 0, 0, 0, 1);
+ pPostProcessShader->SetUniform4x4f("Texm", texm);
+
+ Matrix4f view(2, 0, 0, -1,
+ 0, 2, 0, -1,
+ 0, 0, 0, 0,
+ 0, 0, 0, 1);
+
+ ShaderFill fill(pPostProcessShader);
+ fill.SetTexture(0, pSceneColorTex);
+ RenderWithAlpha(&fill, pFullScreenVertexBuffer, NULL, view, 0, 4, Prim_TriangleStrip);
+}
+
+bool CollisionModel::TestPoint(const Vector3f& p) const
+{
+ for(unsigned i = 0; i < Planes.GetSize(); i++)
+ if(Planes[i].TestSide(p) > 0)
+ {
+ return 0;
+ }
+
+ return 1;
+}
+
+bool CollisionModel::TestRay(const Vector3f& origin, const Vector3f& norm, float& len, Planef* ph) const
+{
+ if(TestPoint(origin))
+ {
+ len = 0;
+ *ph = Planes[0];
+ return true;
+ }
+ Vector3f fullMove = origin + norm * len;
+
+ int crossing = -1;
+ float cdot1 = 0, cdot2 = 0;
+
+ for(unsigned i = 0; i < Planes.GetSize(); ++i)
+ {
+ float dot2 = Planes[i].TestSide(fullMove);
+ if(dot2 > 0)
+ {
+ return false;
+ }
+ float dot1 = Planes[i].TestSide(origin);
+ if(dot1 > 0)
+ {
+ if(dot2 <= 0)
+ {
+ //assert(crossing==-1);
+ if(crossing == -1)
+ {
+ crossing = i;
+ cdot2 = dot2;
+ cdot1 = dot1;
+ }
+ else
+ {
+ if(dot2 > cdot2)
+ {
+ crossing = i;
+ cdot2 = dot2;
+ cdot1 = dot1;
+ }
+ }
+ }
+ }
+ }
+
+ if(crossing < 0)
+ {
+ return false;
+ }
+
+ assert(TestPoint(origin + norm * len));
+
+ len = len * cdot1 / (cdot1 - cdot2) - 0.05f;
+ if(len < 0)
+ {
+ len = 0;
+ }
+ float tp = Planes[crossing].TestSide(origin + norm * len);
+ OVR_ASSERT(fabsf(tp) < 0.05f + Mathf::Tolerance);
+ OVR_UNUSED(tp);
+
+ if(ph)
+ {
+ *ph = Planes[crossing];
+ }
+ return true;
+}
+
+int GetNumMipLevels(int w, int h)
+{
+ int n = 1;
+ while(w > 1 || h > 1)
+ {
+ w >>= 1;
+ h >>= 1;
+ n++;
+ }
+ return n;
+}
+
+void FilterRgba2x2(const UByte* src, int w, int h, UByte* dest)
+{
+ for(int j = 0; j < (h & ~1); j += 2)
+ {
+ const UByte* psrc = src + (w * j * 4);
+ UByte* pdest = dest + ((w >> 1) * (j >> 1) * 4);
+
+ for(int i = 0; i < w >> 1; i++, psrc += 8, pdest += 4)
+ {
+ pdest[0] = (((int)psrc[0]) + psrc[4] + psrc[w * 4 + 0] + psrc[w * 4 + 4]) >> 2;
+ pdest[1] = (((int)psrc[1]) + psrc[5] + psrc[w * 4 + 1] + psrc[w * 4 + 5]) >> 2;
+ pdest[2] = (((int)psrc[2]) + psrc[6] + psrc[w * 4 + 2] + psrc[w * 4 + 6]) >> 2;
+ pdest[3] = (((int)psrc[3]) + psrc[7] + psrc[w * 4 + 3] + psrc[w * 4 + 7]) >> 2;
+ }
+ }
+}
+
+int GetTextureSize(int format, int w, int h)
+{
+ switch (format & Texture_TypeMask)
+ {
+ case Texture_R: return w*h;
+ case Texture_RGBA: return w*h*4;
+ case Texture_DXT1: {
+ int bw = (w+3)/4, bh = (h+3)/4;
+ return bw * bh * 8;
+ }
+ case Texture_DXT3:
+ case Texture_DXT5: {
+ int bw = (w+3)/4, bh = (h+3)/4;
+ return bw * bh * 16;
+ }
+
+ default:
+ OVR_ASSERT(0);
+ }
+ return 0;
+}
+
+}}
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