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gl: Properly disable ctx->spans when necessary

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When compositing starts, if we are not using the spans compositor, we
should set the spans member of the context to false.
This commit is contained in:
Henry Song 2012-05-15 20:32:44 +02:00 • committed by Martin Robinson
parent 18e7234c7e
commit 3bedff0c00
1 changed files with 10 additions and 4 deletions
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14
src/cairo-gl-composite.c
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@ -266,11 +266,18 @@ _cairo_gl_context_setup_operand (cairo_gl_context_t *ctx,
static void
_cairo_gl_context_setup_spans (cairo_gl_context_t *ctx,
cairo_bool_t spans_enabled,
unsigned int vertex_size,
unsigned int vertex_offset)
{
cairo_gl_dispatch_t *dispatch = &ctx->dispatch;
if (! spans_enabled) {
dispatch->DisableVertexAttribArray (CAIRO_GL_COLOR_ATTRIB_INDEX);
ctx->spans = FALSE;
return;
}
dispatch->VertexAttribPointer (CAIRO_GL_COLOR_ATTRIB_INDEX, 4,
GL_UNSIGNED_BYTE, GL_TRUE, vertex_size,
ctx->vb + vertex_offset);
@ -681,10 +688,9 @@ _cairo_gl_composite_begin_multisample (cairo_gl_composite_t *setup,
_cairo_gl_context_setup_operand (ctx, CAIRO_GL_TEX_SOURCE, &setup->src, vertex_size, dst_size);
_cairo_gl_context_setup_operand (ctx, CAIRO_GL_TEX_MASK, &setup->mask, vertex_size, dst_size + src_size);
if (setup->spans)
_cairo_gl_context_setup_spans (ctx, vertex_size, dst_size + src_size + mask_size);
else
ctx->dispatch.DisableVertexAttribArray (CAIRO_GL_COLOR_ATTRIB_INDEX);
_cairo_gl_context_setup_spans (ctx, setup->spans, vertex_size,
dst_size + src_size + mask_size);
_cairo_gl_set_operator (ctx, setup->op, component_alpha);