質問編集履歴
3
削除できないので、削除リクエストが失敗
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最近、C言語で SDL2 と OpenGL を勉強はじめました。
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OpenGLで画像を描画したいと思います。でも結果は画像の部分が白いしかないです。画像が描画されないです。
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削除しました
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```
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```ここに言語を入力
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削除できないので、削除リクエストが失敗
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```
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```
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コード：
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```c
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#include <SDL2/SDL.h>
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#include <SDL2/SDL_opengl.h>
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#include <SDL2/SDL_image.h>
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#define WINDOW_W 640
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#define WINDOW_H 480
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SDL_Window* window;
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SDL_Event event;
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SDL_GLContext context;
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int main(int argc, char* argv[]) {
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if (SDL_Init(SDL_INIT_EVERYTHING) != 0) {
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SDL_Log("Error: SDL failed to initialize. %s\n", SDL_GetError());
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return 1;
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}
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IMG_Init(IMG_INIT_PNG | IMG_INIT_JPG);
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window = SDL_CreateWindow("project-script", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, WINDOW_W, WINDOW_H, SDL_WINDOW_OPENGL);
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if (window == NULL) {
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SDL_Log("Error: Window failed to create. %s\n", SDL_GetError());
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return 1;
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}
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context = SDL_GL_CreateContext(window);
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if (context == NULL) {
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SDL_Log("Error: context failed to create. %s\n", SDL_GetError());
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return 1;
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}
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glEnable(GL_TEXTURE_2D);
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// Load Image
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GLuint textureID = 0;
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SDL_Surface* ImageSurface = IMG_Load("MyImage.jpg");
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glGenTextures(1, &textureID);
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glBindTexture(GL_TEXTURE_2D, textureID);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, ImageSurface->w, ImageSurface->h, 0, GL_RGBA, GL_UNSIGNED_BYTE, ImageSurface->pixels);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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int quit = 0;
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while (quit == 0) {
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while (SDL_PollEvent(&event)) {
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if (event.type == SDL_QUIT) quit = 1;
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}
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glClearColor(0 ,0 ,0, 1);
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glClear(GL_COLOR_BUFFER_BIT);
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glBindTexture(GL_TEXTURE_2D, textureID);
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glBegin(GL_QUADS);
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glTexCoord2f(0, 0); glVertex3f(0, 0, 0);
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glTexCoord2f(1, 0); glVertex3f(ImageSurface->w, 0, 0);
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glTexCoord2f(1, 1); glVertex3f(ImageSurface->w, ImageSurface->h, 0);
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glTexCoord2f(0, 1); glVertex3f(0, ImageSurface->h, 0);
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glEnd();
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SDL_GL_SwapWindow(window);
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}
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glDisable(GL_TEXTURE_2D);
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glDeleteTextures(1, &textureID);
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SDL_GL_DeleteContext(context);
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SDL_DestroyWindow(window);
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IMG_Quit();
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SDL_Quit();
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return 0;
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}
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```
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何が間違っているでしょうか
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別の方法などがあったら教えてぐださい。
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ありがとうございます。
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2
また、間違いところを。。。
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@@ -76,7 +76,6 @@
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glDisable(GL_TEXTURE_2D);
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SDL_GL_DeleteContext(context);
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glDeleteTextures(1, &textureID);
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SDL_GL_DeleteContext(context);
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SDL_DestroyWindow(window);
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1
間違いところ見つかった
title
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@@ -71,13 +71,12 @@
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glTexCoord2f(0, 1); glVertex3f(0, ImageSurface->h, 0);
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glEnd();
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SDL_GL_SwapWindow(window);
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SDL_GL_SwapWindow(window);
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SDL_GL_DeleteContext(context);
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}
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glDisable(GL_TEXTURE_2D);
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SDL_GL_DeleteContext(context);
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glDeleteTextures(1, &textureID);
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SDL_GL_DeleteContext(context);
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SDL_DestroyWindow(window);
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