nv50: add support for GL_EXT_window_rectangles

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>

8 files changed, 75 insertions, 6 deletions

diff --git a/docs/relnotes/12.1.0.html b/docs/relnotes/12.1.0.html
index a334602..096f551 100644
--- a/docs/relnotes/12.1.0.html
+++ b/docs/relnotes/12.1.0.html
@@ -46,7 +46,7 @@ Note: some of the new features are only available with certain drivers.
 <ul>
 <li>GL_ARB_shader_group_vote on nvc0</li>
 <li>GL_ARB_ES3_1_compatibility on i965</li>
-<li>GL_EXT_window_rectangles on nvc0</li>
+<li>GL_EXT_window_rectangles on nv50, nvc0</li>
 </ul>
 
 <h2>Bug fixes</h2>
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_context.h b/src/gallium/drivers/nouveau/nv50/nv50_context.h
index d5de255..cb94c8e 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_context.h
+++ b/src/gallium/drivers/nouveau/nv50/nv50_context.h
@@ -47,6 +47,7 @@
 #define NV50_NEW_3D_SAMPLERS     (1 << 20)
 #define NV50_NEW_3D_STRMOUT      (1 << 21)
 #define NV50_NEW_3D_MIN_SAMPLES  (1 << 22)
+#define NV50_NEW_3D_WINDOW_RECTS (1 << 23)
 #define NV50_NEW_3D_CONTEXT      (1 << 31)
 
 #define NV50_NEW_CP_PROGRAM   (1 << 0)
@@ -168,6 +169,7 @@ struct nv50_context {
    struct pipe_viewport_state viewports[NV50_MAX_VIEWPORTS];
    unsigned viewports_dirty;
    struct pipe_clip_state clip;
+   struct nv50_window_rect_stateobj window_rect;
 
    unsigned sample_mask;
    unsigned min_samples;
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
index d1719d3..042148e 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
@@ -141,6 +141,8 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
       return PIPE_ENDIAN_LITTLE;
    case PIPE_CAP_MAX_TEXTURE_GATHER_COMPONENTS:
       return (class_3d >= NVA3_3D_CLASS) ? 4 : 0;
+   case PIPE_CAP_MAX_WINDOW_RECTANGLES:
+      return NV50_MAX_WINDOW_RECTANGLES;
 
    /* supported caps */
    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
@@ -250,7 +252,6 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
    case PIPE_CAP_PRIMITIVE_RESTART_FOR_PATCHES:
    case PIPE_CAP_TGSI_VOTE:
-   case PIPE_CAP_MAX_WINDOW_RECTANGLES:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.h b/src/gallium/drivers/nouveau/nv50/nv50_screen.h
index 5bb7a51..370d8f5 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.h
+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.h
@@ -23,6 +23,8 @@ struct nv50_context;
 
 #define NV50_MAX_VIEWPORTS 16
 
+#define NV50_MAX_WINDOW_RECTANGLES 8
+
 #define NV50_MAX_GLOBALS 16
 
 #define ONE_TEMP_SIZE (4/*vector*/ * sizeof(float))
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_state.c b/src/gallium/drivers/nouveau/nv50/nv50_state.c
index 3231aba..9f5b5cb 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_state.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_state.c
@@ -1002,6 +1002,22 @@ nv50_set_viewport_states(struct pipe_context *pipe,
 }
 
 static void
+nv50_set_window_rectangles(struct pipe_context *pipe,
+                           boolean include,
+                           unsigned num_rectangles,
+                           const struct pipe_scissor_state *rectangles)
+{
+   struct nv50_context *nv50 = nv50_context(pipe);
+
+   nv50->window_rect.inclusive = include;
+   nv50->window_rect.rects = MIN2(num_rectangles, NV50_MAX_WINDOW_RECTANGLES);
+   memcpy(nv50->window_rect.rect, rectangles,
+          sizeof(struct pipe_scissor_state) * nv50->window_rect.rects);
+
+   nv50->dirty_3d |= NV50_NEW_3D_WINDOW_RECTS;
+}
+
+static void
 nv50_set_vertex_buffers(struct pipe_context *pipe,
                         unsigned start_slot, unsigned count,
                         const struct pipe_vertex_buffer *vb)
@@ -1299,6 +1315,7 @@ nv50_init_state_functions(struct nv50_context *nv50)
    pipe->set_polygon_stipple = nv50_set_polygon_stipple;
    pipe->set_scissor_states = nv50_set_scissor_states;
    pipe->set_viewport_states = nv50_set_viewport_states;
+   pipe->set_window_rectangles = nv50_set_window_rectangles;
 
    pipe->create_vertex_elements_state = nv50_vertex_state_create;
    pipe->delete_vertex_elements_state = nv50_vertex_state_delete;
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_state_validate.c b/src/gallium/drivers/nouveau/nv50/nv50_state_validate.c
index 65f7338..3a374a2 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_state_validate.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_state_validate.c
@@ -278,6 +278,32 @@ nv50_validate_viewport(struct nv50_context *nv50)
    nv50->viewports_dirty = 0;
 }
 
+static void
+nv50_validate_window_rects(struct nv50_context *nv50)
+{
+   struct nouveau_pushbuf *push = nv50->base.pushbuf;
+   bool enable = nv50->window_rect.rects > 0 || nv50->window_rect.inclusive;
+   int i;
+
+   BEGIN_NV04(push, NV50_3D(CLIP_RECTS_EN), 1);
+   PUSH_DATA (push, enable);
+   if (!enable)
+      return;
+
+   BEGIN_NV04(push, NV50_3D(CLIP_RECTS_MODE), 1);
+   PUSH_DATA (push, !nv50->window_rect.inclusive);
+   BEGIN_NV04(push, NV50_3D(CLIP_RECT_HORIZ(0)), NV50_MAX_WINDOW_RECTANGLES * 2);
+   for (i = 0; i < nv50->window_rect.rects; i++) {
+      struct pipe_scissor_state *s = &nv50->window_rect.rect[i];
+      PUSH_DATA(push, (s->maxx << 16) | s->minx);
+      PUSH_DATA(push, (s->maxy << 16) | s->miny);
+   }
+   for (; i < NV50_MAX_WINDOW_RECTANGLES; i++) {
+      PUSH_DATA(push, 0);
+      PUSH_DATA(push, 0);
+   }
+}
+
 static inline void
 nv50_check_program_ucps(struct nv50_context *nv50,
                         struct nv50_program *vp, uint8_t mask)
@@ -492,6 +518,7 @@ validate_list_3d[] = {
     { nv50_validate_scissor,       NV50_NEW_3D_SCISSOR },
 #endif
     { nv50_validate_viewport,      NV50_NEW_3D_VIEWPORT },
+    { nv50_validate_window_rects,  NV50_NEW_3D_WINDOW_RECTS },
     { nv50_vertprog_validate,      NV50_NEW_3D_VERTPROG },
     { nv50_gmtyprog_validate,      NV50_NEW_3D_GMTYPROG },
     { nv50_fragprog_validate,      NV50_NEW_3D_FRAGPROG | NV50_NEW_3D_RASTERIZER |
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_stateobj.h b/src/gallium/drivers/nouveau/nv50/nv50_stateobj.h
index 4b1d00c..b8fa0f6 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_stateobj.h
+++ b/src/gallium/drivers/nouveau/nv50/nv50_stateobj.h
@@ -62,6 +62,12 @@ struct nv50_vertex_stateobj {
    struct nv50_vertex_element element[0];
 };
 
+struct nv50_window_rect_stateobj {
+   bool inclusive;
+   unsigned rects;
+   struct pipe_scissor_state rect[PIPE_MAX_WINDOW_RECTANGLES];
+};
+
 struct nv50_so_target {
    struct pipe_stream_output_target pipe;
    struct pipe_query *pq;
diff --git a/src/gallium/drivers/nouveau/nv50/nv50_surface.c b/src/gallium/drivers/nouveau/nv50/nv50_surface.c
index 61dec3f..fbb5129 100644
--- a/src/gallium/drivers/nouveau/nv50/nv50_surface.c
+++ b/src/gallium/drivers/nouveau/nv50/nv50_surface.c
@@ -825,6 +825,7 @@ struct nv50_blitctx
    enum pipe_texture_target target;
    struct {
       struct pipe_framebuffer_state fb;
+      struct nv50_window_rect_stateobj window_rect;
       struct nv50_rasterizer_stateobj *rast;
       struct nv50_program *vp;
       struct nv50_program *gp;
@@ -1210,7 +1211,8 @@ nv50_blitctx_prepare_state(struct nv50_blitctx *blit)
 }
 
 static void
-nv50_blitctx_pre_blit(struct nv50_blitctx *ctx)
+nv50_blitctx_pre_blit(struct nv50_blitctx *ctx,
+                      const struct pipe_blit_info *info)
 {
    struct nv50_context *nv50 = ctx->nv50;
    struct nv50_blitter *blitter = nv50->screen->blitter;
@@ -1229,6 +1231,7 @@ nv50_blitctx_pre_blit(struct nv50_blitctx *ctx)
    ctx->saved.fp = nv50->fragprog;
 
    ctx->saved.min_samples = nv50->min_samples;
+   ctx->saved.window_rect = nv50->window_rect;
 
    nv50->rast = &ctx->rast;
 
@@ -1236,6 +1239,13 @@ nv50_blitctx_pre_blit(struct nv50_blitctx *ctx)
    nv50->gmtyprog = NULL;
    nv50->fragprog = ctx->fp;
 
+   nv50->window_rect.rects =
+      MIN2(info->num_window_rectangles, NV50_MAX_WINDOW_RECTANGLES);
+   nv50->window_rect.inclusive = info->window_rectangle_include;
+   if (nv50->window_rect.rects)
+      memcpy(nv50->window_rect.rect, info->window_rectangles,
+             sizeof(struct pipe_scissor_state) * nv50->window_rect.rects);
+
    for (s = 0; s < 3; ++s) {
       ctx->saved.num_textures[s] = nv50->num_textures[s];
       ctx->saved.num_samplers[s] = nv50->num_samplers[s];
@@ -1261,7 +1271,7 @@ nv50_blitctx_pre_blit(struct nv50_blitctx *ctx)
    nv50->dirty_3d =
       NV50_NEW_3D_FRAMEBUFFER | NV50_NEW_3D_MIN_SAMPLES |
       NV50_NEW_3D_VERTPROG | NV50_NEW_3D_FRAGPROG | NV50_NEW_3D_GMTYPROG |
-      NV50_NEW_3D_TEXTURES | NV50_NEW_3D_SAMPLERS;
+      NV50_NEW_3D_TEXTURES | NV50_NEW_3D_SAMPLERS | NV50_NEW_3D_WINDOW_RECTS;
 }
 
 static void
@@ -1285,6 +1295,7 @@ nv50_blitctx_post_blit(struct nv50_blitctx *blit)
    nv50->fragprog = blit->saved.fp;
 
    nv50->min_samples = blit->saved.min_samples;
+   nv50->window_rect = blit->saved.window_rect;
 
    pipe_sampler_view_reference(&nv50->textures[2][0], NULL);
    pipe_sampler_view_reference(&nv50->textures[2][1], NULL);
@@ -1308,7 +1319,7 @@ nv50_blitctx_post_blit(struct nv50_blitctx *blit)
    nv50->dirty_3d = blit->saved.dirty_3d |
       (NV50_NEW_3D_FRAMEBUFFER | NV50_NEW_3D_SCISSOR | NV50_NEW_3D_SAMPLE_MASK |
        NV50_NEW_3D_RASTERIZER | NV50_NEW_3D_ZSA | NV50_NEW_3D_BLEND |
-       NV50_NEW_3D_TEXTURES | NV50_NEW_3D_SAMPLERS |
+       NV50_NEW_3D_TEXTURES | NV50_NEW_3D_SAMPLERS | NV50_NEW_3D_WINDOW_RECTS |
        NV50_NEW_3D_VERTPROG | NV50_NEW_3D_GMTYPROG | NV50_NEW_3D_FRAGPROG);
    nv50->scissors_dirty |= 1;
 
@@ -1336,7 +1347,7 @@ nv50_blit_3d(struct nv50_context *nv50, const struct pipe_blit_info *info)
    blit->render_condition_enable = info->render_condition_enable;
 
    nv50_blit_select_fp(blit, info);
-   nv50_blitctx_pre_blit(blit);
+   nv50_blitctx_pre_blit(blit, info);
 
    nv50_blit_set_dst(blit, dst, info->dst.level, -1, info->dst.format);
    nv50_blit_set_src(blit, src, info->src.level, -1, info->src.format,
@@ -1688,6 +1699,9 @@ nv50_blit(struct pipe_context *pipe, const struct pipe_blit_info *info)
        info->dst.resource->nr_samples <= 1)
       eng3d = true;
 
+   if (info->num_window_rectangles > 0 || info->window_rectangle_include)
+      eng3d = true;
+
    /* FIXME: can't make this work with eng2d anymore */
    if ((info->src.resource->nr_samples | 1) !=
        (info->dst.resource->nr_samples | 1))