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Add SDL_UpdateNVTexture() to update NV12/21 Texture (bug #5430)

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for renderer software, opengl, and opengles2
This commit is contained in:
Sylvain Becker 2021-01-05 11:56:22 +01:00
parent d72dbd9883
commit be4cfd51c3
7 changed files with 254 additions and 0 deletions
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33
src/render/opengl/SDL_render_gl.c
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@ -728,6 +728,38 @@ GL_UpdateTextureYUV(SDL_Renderer * renderer, SDL_Texture * texture,
return GL_CheckError("glTexSubImage2D()", renderer);
}
static int
GL_UpdateTextureNV(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect,
const Uint8 *Yplane, int Ypitch,
const Uint8 *UVplane, int UVpitch)
{
GL_RenderData *renderdata = (GL_RenderData *) renderer->driverdata;
const GLenum textype = renderdata->textype;
GL_TextureData *data = (GL_TextureData *) texture->driverdata;
GL_ActivateRenderer(renderer);
renderdata->drawstate.texture = NULL; /* we trash this state. */
renderdata->glBindTexture(textype, data->texture);
renderdata->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, Ypitch);
renderdata->glTexSubImage2D(textype, 0, rect->x, rect->y, rect->w,
rect->h, data->format, data->formattype,
Yplane);
renderdata->glPixelStorei(GL_UNPACK_ROW_LENGTH, UVpitch / 2);
renderdata->glBindTexture(textype, data->utexture);
renderdata->glTexSubImage2D(textype, 0, rect->x/2, rect->y/2,
(rect->w + 1)/2, (rect->h + 1)/2,
GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, UVplane);
return GL_CheckError("glTexSubImage2D()", renderer);
}
static int
GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect, void **pixels, int *pitch)
@ -1590,6 +1622,7 @@ GL_CreateRenderer(SDL_Window * window, Uint32 flags)
renderer->CreateTexture = GL_CreateTexture;
renderer->UpdateTexture = GL_UpdateTexture;
renderer->UpdateTextureYUV = GL_UpdateTextureYUV;
renderer->UpdateTextureNV = GL_UpdateTextureNV;
renderer->LockTexture = GL_LockTexture;
renderer->UnlockTexture = GL_UnlockTexture;
renderer->SetTextureScaleMode = GL_SetTextureScaleMode;