diff options
Diffstat (limited to 'experimental/GLFWTest/glfw_main.cpp')
| -rw-r--r-- | experimental/GLFWTest/glfw_main.cpp | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/experimental/GLFWTest/glfw_main.cpp b/experimental/GLFWTest/glfw_main.cpp deleted file mode 100644 index 358fbb89bb..0000000000 --- a/experimental/GLFWTest/glfw_main.cpp +++ /dev/null @@ -1,187 +0,0 @@ -/* - * Copyright 2015 Google Inc. - * - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include <stdlib.h> -#include <stdio.h> -#include "GLFW/glfw3.h" -#include "GrBackendSurface.h" -#include "GrContext.h" -#include "SkCanvas.h" -#include "SkImage.h" -#include "SkRSXform.h" -#include "SkSurface.h" -#include "Timer.h" - -GrContext* sContext = nullptr; -SkSurface* sSurface = nullptr; - -static void error_callback(int error, const char* description) { - fputs(description, stderr); -} - -static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) { - if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) - glfwSetWindowShouldClose(window, GL_TRUE); -} - - -static void init_skia(int w, int h) { - sContext = GrContext::MakeGL(nullptr).release(); - - GrGLFramebufferInfo framebufferInfo; - framebufferInfo.fFBOID = 0; // assume default framebuffer - // We are always using OpenGL and we use RGBA8 internal format for both RGBA and BGRA configs in - // OpenGL. - framebufferInfo.fFormat = GR_GL_RGBA8; - SkColorType colorType; - if (kRGBA_8888_GrPixelConfig == kSkia8888_GrPixelConfig) { - colorType = kRGBA_8888_SkColorType; - } else { - colorType = kBGRA_8888_SkColorType; - } - GrBackendRenderTarget backendRenderTarget(w, h, - 0, // sample count - 0, // stencil bits - framebufferInfo); - - sSurface = SkSurface::MakeFromBackendRenderTarget(sContext, backendRenderTarget, - kBottomLeft_GrSurfaceOrigin, colortype, - nullptr, nullptr).release(); -} - -static void cleanup_skia() { - delete sSurface; - delete sContext; -} - -const int kGrid = 100; -const int kWidth = 960; -const int kHeight = 640; - -int main(void) { - GLFWwindow* window; - glfwSetErrorCallback(error_callback); - if (!glfwInit()) { - exit(EXIT_FAILURE); - } - - glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); - glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2); - glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); - glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); - glfwWindowHint(GLFW_SRGB_CAPABLE, GL_TRUE); - - window = glfwCreateWindow(kWidth, kHeight, "Simple example", NULL, NULL); - if (!window) { - glfwTerminate(); - exit(EXIT_FAILURE); - } - glfwMakeContextCurrent(window); - - init_skia(kWidth, kHeight); - - sk_sp<SkImage> atlas; - SkRSXform xform[kGrid*kGrid+1]; - SkRect tex[kGrid*kGrid+1]; - WallTimer timer; - float times[32]; - int currentTime; - - sk_sp<SkData> imageData(SkData::MakeFromFileName("images/ship.png")); - atlas.reset(SkImage::NewFromEncoded(imageData.get())); - if (!atlas) { - SkDebugf("\nCould not decode file ship.png\n"); - - cleanup_skia(); - glfwDestroyWindow(window); - glfwTerminate(); - exit(EXIT_FAILURE); - } - - SkScalar anchorX = atlas->width()*0.5f; - SkScalar anchorY = atlas->height()*0.5f; - int currIndex = 0; - for (int x = 0; x < kGrid; x++) { - for (int y = 0; y < kGrid; y++) { - float xPos = (x / (kGrid - 1.0)) * kWidth; - float yPos = (y / (kGrid - 1.0)) * kWidth; - - tex[currIndex] = SkRect::MakeLTRB(0.0f, 0.0f, atlas->width(), atlas->height()); - xform[currIndex] = SkRSXform::MakeFromRadians(2.0f, SK_ScalarPI*0.5f, - xPos, yPos, anchorX, anchorY); - currIndex++; - } - } - tex[currIndex] = SkRect::MakeLTRB(0.0f, 0.0f, atlas->width(), atlas->height()); - xform[currIndex] = SkRSXform::MakeFromRadians(2.0f, SK_ScalarPI*0.5f, - kWidth*0.5f, kHeight*0.5f, anchorX, anchorY); - - currentTime = 0; - - glfwSwapInterval(1); - glfwSetKeyCallback(window, key_callback); - - // Draw to the surface via its SkCanvas. - SkCanvas* canvas = sSurface->getCanvas(); // We don't manage this pointer's lifetime. - SkPaint paint; - paint.setFilterQuality(kLow_SkFilterQuality); - paint.setColor(SK_ColorWHITE); - paint.setTextSize(15.0f); - - while (!glfwWindowShouldClose(window)) { - const float kCosDiff = 0.99984769515f; - const float kSinDiff = 0.01745240643f; - - timer.start(); - - glfwPollEvents(); - - float meanTime = 0.0f; - for (int i = 0; i < 32; ++i) { - meanTime += times[i]; - } - meanTime /= 32.f; - char outString[64]; - float fps = 1000.f/meanTime; - sprintf(outString, "fps: %f ms: %f", fps, meanTime); - - for (int i = 0; i < kGrid*kGrid+1; ++i) { - SkScalar c = xform[i].fSCos; - SkScalar s = xform[i].fSSin; - - SkScalar dx = c*anchorX - s*anchorY; - SkScalar dy = s*anchorX + c*anchorY; - - xform[i].fSCos = kCosDiff*c - kSinDiff*s; - xform[i].fSSin = kSinDiff*c + kCosDiff*s; - - dx -= xform[i].fSCos*anchorX - xform[i].fSSin*anchorY; - dy -= xform[i].fSSin*anchorX + xform[i].fSCos*anchorY; - xform[i].fTx += dx; - xform[i].fTy += dy; - } - - canvas->clear(SK_ColorBLACK); - canvas->drawAtlas(atlas, xform, tex, nullptr, kGrid*kGrid+1, SkXfermode::kSrcOver_Mode, - nullptr, &paint); - canvas->drawText(outString, strlen(outString), 100.f, 100.f, paint); - - canvas->flush(); - - timer.end(); - times[currentTime] = (float)(timer.fWall); - currentTime = (currentTime + 1) & 0x1f; - - glfwSwapBuffers(window); - } - - cleanup_skia(); - - glfwDestroyWindow(window); - glfwTerminate(); - exit(EXIT_SUCCESS); -} |