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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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43
src/render/opengles2/SDL_render_gles2.c
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@ -1748,6 +1748,48 @@ GLES2_UpdateTextureYUV(SDL_Renderer * renderer, SDL_Texture * texture,
return GL_CheckError("glTexSubImage2D()", renderer);
}
static int
GLES2_UpdateTextureNV(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * rect,
const Uint8 *Yplane, int Ypitch,
const Uint8 *UVplane, int UVpitch)
{
GLES2_RenderData *data = (GLES2_RenderData *)renderer->driverdata;
GLES2_TextureData *tdata = (GLES2_TextureData *)texture->driverdata;
GLES2_ActivateRenderer(renderer);
/* Bail out if we're supposed to update an empty rectangle */
if (rect->w <= 0 || rect->h <= 0) {
return 0;
}
data->drawstate.texture = NULL; /* we trash this state. */
data->glBindTexture(tdata->texture_type, tdata->texture_u);
GLES2_TexSubImage2D(data, tdata->texture_type,
rect->x / 2,
rect->y / 2,
(rect->w + 1) / 2,
(rect->h + 1) / 2,
GL_LUMINANCE_ALPHA,
GL_UNSIGNED_BYTE,
UVplane, UVpitch / 2, 1);
data->glBindTexture(tdata->texture_type, tdata->texture);
GLES2_TexSubImage2D(data, tdata->texture_type,
rect->x,
rect->y,
rect->w,
rect->h,
tdata->pixel_format,
tdata->pixel_type,
Yplane, Ypitch, 1);
return GL_CheckError("glTexSubImage2D()", renderer);
}
static int
GLES2_LockTexture(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *rect,
void **pixels, int *pitch)
@ -2126,6 +2168,7 @@ GLES2_CreateRenderer(SDL_Window *window, Uint32 flags)
renderer->CreateTexture = GLES2_CreateTexture;
renderer->UpdateTexture = GLES2_UpdateTexture;
renderer->UpdateTextureYUV = GLES2_UpdateTextureYUV;
renderer->UpdateTextureNV = GLES2_UpdateTextureNV;
renderer->LockTexture = GLES2_LockTexture;
renderer->UnlockTexture = GLES2_UnlockTexture;
renderer->SetTextureScaleMode = GLES2_SetTextureScaleMode;