st/xa: Initial import of the xa state-tracker and the xa-vmwgfx target.

See the file src/gallium/state_trackers/xa/README for more info.

Signed-off-by: Thomas Hellstrom <[email protected]>

1 files changed, 178 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/xa/xa_yuv.c b/src/gallium/state_trackers/xa/xa_yuv.c
new file mode 100644
index 00000000000..248c77ab645
--- /dev/null
+++ b/src/gallium/state_trackers/xa/xa_yuv.c
@@ -0,0 +1,178 @@
+/**********************************************************
+ * Copyright 2009-2011 VMware, Inc. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ *********************************************************
+ * Authors:
+ * Zack Rusin <zackr-at-vmware-dot-com>
+ * Thomas Hellstrom <thellstrom-at-vmware-dot-com>
+ */
+
+#include "xa_context.h"
+#include "xa_priv.h"
+#include "util/u_inlines.h"
+#include "util/u_sampler.h"
+#include "util/u_surface.h"
+#include "cso_cache/cso_context.h"
+
+static void
+xa_yuv_bind_blend_state(struct xa_context *r)
+{
+    struct pipe_blend_state blend;
+
+    memset(&blend, 0, sizeof(struct pipe_blend_state));
+    blend.rt[0].blend_enable = 0;
+    blend.rt[0].colormask = PIPE_MASK_RGBA;
+
+    /* porter&duff src */
+    blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
+    blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
+    blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
+    blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
+
+    cso_set_blend(r->cso, &blend);
+}
+
+static void
+xa_yuv_bind_shaders(struct xa_context *r)
+{
+    unsigned vs_traits = 0, fs_traits = 0;
+    struct xa_shader shader;
+
+    vs_traits |= VS_YUV;
+    fs_traits |= FS_YUV;
+
+    shader = xa_shaders_get(r->shaders, vs_traits, fs_traits);
+    cso_set_vertex_shader_handle(r->cso, shader.vs);
+    cso_set_fragment_shader_handle(r->cso, shader.fs);
+}
+
+static void
+xa_yuv_bind_samplers(struct xa_context *r, struct xa_surface *yuv[])
+{
+    struct pipe_sampler_state *samplers[3];
+    struct pipe_sampler_state sampler;
+    struct pipe_sampler_view *views[3];
+    struct pipe_sampler_view view_templ;
+    unsigned int i;
+
+    memset(&sampler, 0, sizeof(struct pipe_sampler_state));
+
+    sampler.wrap_s = PIPE_TEX_WRAP_CLAMP;
+    sampler.wrap_t = PIPE_TEX_WRAP_CLAMP;
+    sampler.min_img_filter = PIPE_TEX_FILTER_LINEAR;
+    sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
+    sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
+    sampler.normalized_coords = 1;
+
+    for (i = 0; i < 3; ++i) {
+	samplers[i] = &sampler;
+	if (!yuv[i]->view) {
+	    u_sampler_view_default_template(&view_templ,
+					    yuv[i]->tex, yuv[i]->tex->format);
+
+	    yuv[i]->view = r->pipe->create_sampler_view(r->pipe,
+							yuv[i]->tex,
+							&view_templ);
+	}
+	views[i] = yuv[i]->view;
+    }
+
+    cso_set_samplers(r->cso, 3, (const struct pipe_sampler_state **)samplers);
+    cso_set_fragment_sampler_views(r->cso, 3, views);
+}
+
+static void
+xa_yuv_fs_constants(struct xa_context *r, const float conversion_matrix[])
+{
+    const int param_bytes = 12 * sizeof(float);
+
+    renderer_set_constants(r, PIPE_SHADER_FRAGMENT,
+			   conversion_matrix, param_bytes);
+}
+
+static void
+xa_yuv_destroy_sampler_views(struct xa_surface *yuv[])
+{
+    unsigned int i;
+
+    for (i = 0; i < 3; ++i) {
+	pipe_sampler_view_reference(&yuv[i]->view, NULL);
+    }
+}
+
+extern int
+xa_yuv_planar_blit(struct xa_context *r,
+		   int src_x,
+		   int src_y,
+		   int src_w,
+		   int src_h,
+		   int dst_x,
+		   int dst_y,
+		   int dst_w,
+		   int dst_h,
+		   struct xa_box *box,
+		   unsigned int num_boxes,
+		   const float conversion_matrix[],
+		   struct xa_surface *dst, struct xa_surface *yuv[])
+{
+    float scale_x;
+    float scale_y;
+    struct pipe_surface srf_templ;
+
+    if (dst_w == 0 || dst_h == 0)
+	return XA_ERR_NONE;
+
+    memset(&srf_templ, 0, sizeof(srf_templ));
+    u_surface_default_template(&srf_templ, dst->tex, PIPE_BIND_RENDER_TARGET);
+    dst->srf = r->pipe->create_surface(r->pipe, dst->tex, &srf_templ);
+    if (!dst->srf)
+	return -XA_ERR_NORES;
+
+    renderer_bind_destination(r, dst->srf, dst->srf->width, dst->srf->height);
+    xa_yuv_bind_blend_state(r);
+    xa_yuv_bind_shaders(r);
+    xa_yuv_bind_samplers(r, yuv);
+    xa_yuv_fs_constants(r, conversion_matrix);
+
+    scale_x = (float)src_w / (float)dst_w;
+    scale_y = (float)src_h / (float)dst_h;
+
+    while (num_boxes--) {
+	int x = box->x1;
+	int y = box->y1;
+	int w = box->x2 - box->x1;
+	int h = box->y2 - box->y1;
+
+	renderer_draw_yuv(r,
+			  (float)src_x + scale_x * (x - dst_x),
+			  (float)src_y + scale_y * (y - dst_y),
+			  scale_x * w, scale_y * h, x, y, w, h, yuv);
+    }
+
+    r->pipe->flush(r->pipe, &r->last_fence);
+
+    xa_yuv_destroy_sampler_views(yuv);
+    pipe_surface_reference(&dst->srf, NULL);
+
+    return XA_ERR_NONE;
+}