X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fdrivers%2Fdri%2Fi965%2Fgen8_viewport_state.c;h=2692ad55999b547a63b3344fe65f963851417003;hb=627c15cde46a76e9bce4425646c5caba11788ec4;hp=b5171e08770aef1d837f08e09346c860b2a63df2;hpb=109d420f42b66224366f4604d1235204101abb37;p=mesa.git

diff --git a/src/mesa/drivers/dri/i965/gen8_viewport_state.c b/src/mesa/drivers/dri/i965/gen8_viewport_state.c
index b5171e08770..2692ad55999 100644
--- a/src/mesa/drivers/dri/i965/gen8_viewport_state.c
+++ b/src/mesa/drivers/dri/i965/gen8_viewport_state.c
@@ -26,13 +26,15 @@
 #include "brw_defines.h"
 #include "intel_batchbuffer.h"
 #include "main/fbobject.h"
+#include "main/framebuffer.h"
+#include "main/viewport.h"
 
 static void
 gen8_upload_sf_clip_viewport(struct brw_context *brw)
 {
    struct gl_context *ctx = &brw->ctx;
-   const GLfloat depth_scale = 1.0F / ctx->DrawBuffer->_DepthMaxF;
    float y_scale, y_bias;
+   const float fb_height = (float)_mesa_geometric_height(ctx->DrawBuffer);
    const bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
 
    float *vp = brw_state_batch(brw, AUB_TRACE_SF_VP_STATE,
@@ -47,19 +49,20 @@ gen8_upload_sf_clip_viewport(struct brw_context *brw)
       y_bias = 0;
    } else {
       y_scale = -1.0;
-      y_bias = ctx->DrawBuffer->Height;
+      y_bias = fb_height;
    }
 
    for (unsigned i = 0; i < ctx->Const.MaxViewports; i++) {
-      const GLfloat *const v = ctx->ViewportArray[i]._WindowMap.m;
+      float scale[3], translate[3];
+      _mesa_get_viewport_xform(ctx, i, scale, translate);
 
       /* _NEW_VIEWPORT: Viewport Matrix Elements */
-      vp[0] = v[MAT_SX];                    /* m00 */
-      vp[1] = v[MAT_SY] * y_scale;          /* m11 */
-      vp[2] = v[MAT_SZ] * depth_scale;      /* m22 */
-      vp[3] = v[MAT_TX];                    /* m30 */
-      vp[4] = v[MAT_TY] * y_scale + y_bias; /* m31 */
-      vp[5] = v[MAT_TZ] * depth_scale;      /* m32 */
+      vp[0] = scale[0];                        /* m00 */
+      vp[1] = scale[1] * y_scale;              /* m11 */
+      vp[2] = scale[2];                        /* m22 */
+      vp[3] = translate[0];                    /* m30 */
+      vp[4] = translate[1] * y_scale + y_bias; /* m31 */
+      vp[5] = translate[2];                    /* m32 */
 
       /* Reserved */
       vp[6] = 0;
@@ -100,17 +103,23 @@ gen8_upload_sf_clip_viewport(struct brw_context *brw)
       vp[10] = -gby; /* y-min */
       vp[11] =  gby; /* y-max */
 
-      /* _NEW_SCISSOR | _NEW_VIEWPORT | _NEW_BUFFERS: Screen Space Viewport */
+      /* _NEW_VIEWPORT | _NEW_BUFFERS: Screen Space Viewport
+       * The hardware will take the intersection of the drawing rectangle,
+       * scissor rectangle, and the viewport extents. We don't need to be
+       * smart, and can therefore just program the viewport extents.
+       */
+      float viewport_Xmax = ctx->ViewportArray[i].X + ctx->ViewportArray[i].Width;
+      float viewport_Ymax = ctx->ViewportArray[i].Y + ctx->ViewportArray[i].Height;
       if (render_to_fbo) {
-         vp[12] = ctx->DrawBuffer->_Xmin;
-         vp[13] = ctx->DrawBuffer->_Xmax - 1;
-         vp[14] = ctx->DrawBuffer->_Ymin;
-         vp[15] = ctx->DrawBuffer->_Ymax - 1;
+         vp[12] = ctx->ViewportArray[i].X;
+         vp[13] = viewport_Xmax - 1;
+         vp[14] = ctx->ViewportArray[i].Y;
+         vp[15] = viewport_Ymax - 1;
       } else {
-         vp[12] = ctx->DrawBuffer->_Xmin;
-         vp[13] = ctx->DrawBuffer->_Xmax - 1;
-         vp[14] = ctx->DrawBuffer->Height - ctx->DrawBuffer->_Ymax;
-         vp[15] = ctx->DrawBuffer->Height - ctx->DrawBuffer->_Ymin - 1;
+         vp[12] = ctx->ViewportArray[i].X;
+         vp[13] = viewport_Xmax - 1;
+         vp[14] = fb_height - viewport_Ymax;
+         vp[15] = fb_height - ctx->ViewportArray[i].Y - 1;
       }
 
       vp += 16;
@@ -124,9 +133,9 @@ gen8_upload_sf_clip_viewport(struct brw_context *brw)
 
 const struct brw_tracked_state gen8_sf_clip_viewport = {
    .dirty = {
-      .mesa = _NEW_BUFFERS | _NEW_SCISSOR | _NEW_VIEWPORT,
+      .mesa = _NEW_BUFFERS |
+              _NEW_VIEWPORT,
       .brw = BRW_NEW_BATCH,
-      .cache = 0,
    },
    .emit = gen8_upload_sf_clip_viewport,
 };