From d7e52327f0ad7e01d071b09d0e9bfd2822a855a9 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= Date: Wed, 14 Jun 2017 22:45:13 +0200 Subject: [PATCH] st/mesa: simplify st_update_viewport MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Reviewed-by: Nicolai Hähnle --- src/mesa/state_tracker/st_atom_viewport.c | 35 +++++++---------------- 1 file changed, 10 insertions(+), 25 deletions(-) diff --git a/src/mesa/state_tracker/st_atom_viewport.c b/src/mesa/state_tracker/st_atom_viewport.c index 1fc8908f9f7..abf5faa0bc3 100644 --- a/src/mesa/state_tracker/st_atom_viewport.c +++ b/src/mesa/state_tracker/st_atom_viewport.c @@ -43,37 +43,22 @@ void st_update_viewport( struct st_context *st ) { struct gl_context *ctx = st->ctx; - GLfloat yScale, yBias; unsigned i; - /* _NEW_BUFFERS - */ - if (st->state.fb_orientation == Y_0_TOP) { - /* Drawing to a window. The corresponding gallium surface uses - * Y=0=TOP but OpenGL is Y=0=BOTTOM. So we need to invert the viewport. - */ - yScale = -1; - yBias = (GLfloat)ctx->DrawBuffer->Height; - } - else { - /* Drawing to an FBO where Y=0=BOTTOM, like OpenGL - don't invert */ - yScale = 1.0; - yBias = 0.0; - } /* _NEW_VIEWPORT */ - for (i = 0; i < ctx->Const.MaxViewports; i++) - { - float scale[3], translate[3]; - _mesa_get_viewport_xform(ctx, i, scale, translate); + for (i = 0; i < ctx->Const.MaxViewports; i++) { + float *scale = st->state.viewport[i].scale; + float *translate = st->state.viewport[i].translate; - st->state.viewport[i].scale[0] = scale[0]; - st->state.viewport[i].scale[1] = scale[1] * yScale; - st->state.viewport[i].scale[2] = scale[2]; + _mesa_get_viewport_xform(ctx, i, scale, translate); - st->state.viewport[i].translate[0] = translate[0]; - st->state.viewport[i].translate[1] = translate[1] * yScale + yBias; - st->state.viewport[i].translate[2] = translate[2]; + /* _NEW_BUFFERS */ + /* Drawing to a window where the coordinate system is upside down. */ + if (st->state.fb_orientation == Y_0_TOP) { + scale[1] *= -1; + translate[1] = st->state.fb_height - translate[1]; + } } cso_set_viewport(st->cso_context, &st->state.viewport[0]); -- 2.30.2