From f7af12ae852bdc957fc6f197c722822b82043ead Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Tue, 16 Feb 2016 10:22:32 -0700 Subject: [PATCH] cso: add new cso_set_viewport_dims() helper To simplify some viewport setting code in the state tracker. Reviewed-by: Jose Fonseca --- src/gallium/auxiliary/cso_cache/cso_context.c | 18 ++++++++++++++++++ src/gallium/auxiliary/cso_cache/cso_context.h | 2 ++ 2 files changed, 20 insertions(+) diff --git a/src/gallium/auxiliary/cso_cache/cso_context.c b/src/gallium/auxiliary/cso_cache/cso_context.c index 79ae753..2d6540d 100644 --- a/src/gallium/auxiliary/cso_cache/cso_context.c +++ b/src/gallium/auxiliary/cso_cache/cso_context.c @@ -674,6 +674,24 @@ void cso_set_viewport(struct cso_context *ctx, } } +/** + * Setup viewport state for given width and height (position is always (0,0)). + * Invert the Y axis if 'invert' is true. + */ +void +cso_set_viewport_dims(struct cso_context *ctx, + float width, float height, boolean invert) +{ + struct pipe_viewport_state vp; + vp.scale[0] = width * 0.5f; + vp.scale[1] = height * (invert ? -0.5f : 0.5f); + vp.scale[2] = 0.5f; + vp.translate[0] = 0.5f * width; + vp.translate[1] = 0.5f * height; + vp.translate[2] = 0.5f; + cso_set_viewport(ctx, &vp); +} + void cso_save_viewport(struct cso_context *ctx) { ctx->vp_saved = ctx->vp; diff --git a/src/gallium/auxiliary/cso_cache/cso_context.h b/src/gallium/auxiliary/cso_cache/cso_context.h index ec9112b..83ce60e 100644 --- a/src/gallium/auxiliary/cso_cache/cso_context.h +++ b/src/gallium/auxiliary/cso_cache/cso_context.h @@ -163,6 +163,8 @@ void cso_restore_framebuffer(struct cso_context *cso); void cso_set_viewport(struct cso_context *cso, const struct pipe_viewport_state *vp); +void cso_set_viewport_dims(struct cso_context *ctx, + float width, float height, boolean invert); void cso_save_viewport(struct cso_context *cso); void cso_restore_viewport(struct cso_context *cso); -- 2.7.4