本文整理汇总了C++中GL_RenderData::glTexImage2D方法的典型用法代码示例。如果您正苦于以下问题：C++ GL_RenderData::glTexImage2D方法的具体用法？C++ GL_RenderData::glTexImage2D怎么用？C++ GL_RenderData::glTexImage2D使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GL_RenderData的用法示例。
在下文中一共展示了GL_RenderData::glTexImage2D方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: sizeof
static int
GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
{
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
GL_TextureData *data;
GLint internalFormat;
GLenum format, type;
int texture_w, texture_h;
GLenum result;
GL_ActivateRenderer(renderer);
if (!convert_format(renderdata, texture->format, &internalFormat,
&format, &type)) {
SDL_SetError("Texture format %s not supported by OpenGL",
SDL_GetPixelFormatName(texture->format));
return -1;
}
data = (GL_TextureData *) SDL_calloc(1, sizeof(*data));
if (!data) {
SDL_OutOfMemory();
return -1;
}
if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
size_t size;
data->pitch = texture->w * SDL_BYTESPERPIXEL(texture->format);
size = texture->h * data->pitch;
if (texture->format == SDL_PIXELFORMAT_YV12 ||
texture->format == SDL_PIXELFORMAT_IYUV) {
/* Need to add size for the U and V planes */
size += (2 * (texture->h * data->pitch) / 4);
}
data->pixels = SDL_malloc(size);
if (!data->pixels) {
SDL_OutOfMemory();
SDL_free(data);
return -1;
}
}
texture->driverdata = data;
renderdata->glGetError();
renderdata->glGenTextures(1, &data->texture);
if (renderdata->GL_ARB_texture_rectangle_supported) {
data->type = GL_TEXTURE_RECTANGLE_ARB;
texture_w = texture->w;
texture_h = texture->h;
data->texw = (GLfloat) texture_w;
data->texh = (GLfloat) texture_h;
} else {
data->type = GL_TEXTURE_2D;
texture_w = power_of_2(texture->w);
texture_h = power_of_2(texture->h);
data->texw = (GLfloat) (texture->w) / texture_w;
data->texh = (GLfloat) texture->h / texture_h;
}
data->format = format;
data->formattype = type;
data->scaleMode = GL_LINEAR;
renderdata->glEnable(data->type);
renderdata->glBindTexture(data->type, data->texture);
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE);
renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE);
#ifdef __MACOSX__
#ifndef GL_TEXTURE_STORAGE_HINT_APPLE
#define GL_TEXTURE_STORAGE_HINT_APPLE 0x85BC
#endif
#ifndef STORAGE_CACHED_APPLE
#define STORAGE_CACHED_APPLE 0x85BE
#endif
#ifndef STORAGE_SHARED_APPLE
#define STORAGE_SHARED_APPLE 0x85BF
#endif
if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
renderdata->glTexParameteri(data->type, GL_TEXTURE_STORAGE_HINT_APPLE,
GL_STORAGE_SHARED_APPLE);
} else {
renderdata->glTexParameteri(data->type, GL_TEXTURE_STORAGE_HINT_APPLE,
GL_STORAGE_CACHED_APPLE);
}
if (texture->access == SDL_TEXTUREACCESS_STREAMING
&& texture->format == SDL_PIXELFORMAT_ARGB8888) {
renderdata->glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w,
texture_h, 0, format, type, data->pixels);
}
else
#endif
{
renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w,
texture_h, 0, format, type, NULL);
}
renderdata->glDisable(data->type);
result = renderdata->glGetError();
//.........这里部分代码省略.........