meta: Drop blit src size fallback.

I think we can assert that renderbuffer size is <= maximum 2D texture
size.  Our source coordinates should have already been clipped to the src
renderbuffer size, but haven't actually (so we could potentially have
trouble if there's scaling, and we're in the CopyTexImage path that tries
to use src size).  However, this texture size dependency was blocking the
next refactors, so I'm not sure if we want to go ahead with this series
before we get the clipping sorted out or not.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

diff --git a/src/mesa/drivers/common/meta_blit.c b/src/mesa/drivers/common/meta_blit.c
index 31e494fb84611a0fb1552dc32d621dbe6e677af3..c201521d8e9c98a856dbfe890dd014beaff0ce72 100644 (file)
--- a/src/mesa/drivers/common/meta_blit.c
+++ b/src/mesa/drivers/common/meta_blit.c
@@ -603,7 +603,6 @@ _mesa_meta_BlitFramebuffer(struct gl_context *ctx,
    struct blit_state *blit = &ctx->Meta->Blit;
    struct temp_texture *tex = _mesa_meta_get_temp_texture(ctx);
    struct temp_texture *depthTex = _mesa_meta_get_temp_depth_texture(ctx);
-   const GLsizei maxTexSize = tex->MaxSize;
    const GLint srcX = MIN2(srcX0, srcX1);
    const GLint srcY = MIN2(srcY0, srcY1);
    const GLint srcW = abs(srcX1 - srcX0);
@@ -624,15 +623,6 @@ _mesa_meta_BlitFramebuffer(struct gl_context *ctx,
    const GLboolean use_glsl_version = ctx->Extensions.ARB_vertex_shader &&
                                       ctx->Extensions.ARB_fragment_shader;
 
-   /* In addition to falling back if the blit size is larger than the maximum
-    * texture size, fallback if the source is multisampled.  This fallback can
-    * be removed once Mesa gets support ARB_texture_multisample.
-    */
-   if (srcW > maxTexSize || srcH > maxTexSize) {
-      /* XXX avoid this fallback */
-      goto fallback;
-   }
-
    /* Multisample texture blit support requires texture multisample. */
    if (ctx->ReadBuffer->Visual.samples > 0 &&
        !ctx->Extensions.ARB_texture_multisample) {