[Mesa-dev] [PATCH 3/3] i965: set ctx->Const.MaxViewport{Width, Height} to 32k

[Samuel Iglesias Gonsálvez]

>From ARB_viewport_array spec:

" * On GL3-capable hardware the VIEWPORT_BOUNDS_RANGE should be at least
    [-16384, 16383].
  * On GL4-capable hardware the VIEWPORT_BOUNDS_RANGE should be at least
    [-32768, 32767]."

This range is set using ctx->Const.MaxViewportWidth value, so just bump
those constants to 32k for gen7+ which can support OpenGL 4.0.

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias at igalia.com>
---
 src/mesa/drivers/dri/i965/brw_context.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 31b6b2a..f5e4ace 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -682,6 +682,11 @@ brw_initialize_context_constants(struct brw_context *brw)
          brw->intelScreen->compiler->glsl_compiler_options[i];
    }
 
+   if (brw->gen >= 7) {
+      ctx->Const.MaxViewportWidth = 32768;
+      ctx->Const.MaxViewportHeight = 32768;
+   }
+
    /* ARB_viewport_array */
    if (brw->gen >= 6 && ctx->API == API_OPENGL_CORE) {
       ctx->Const.MaxViewports = GEN6_NUM_VIEWPORTS;
-- 
2.7.0