1 files changed, 33 insertions, 35 deletions

diff --git a/src/gallium/drivers/r300/r300_render.c b/src/gallium/drivers/r300/r300_render.c
index d05a736dd96..737396d8d97 100644
--- a/src/gallium/drivers/r300/r300_render.c
+++ b/src/gallium/drivers/r300/r300_render.c
@@ -31,6 +31,7 @@
 #include "r300_state_derived.h"
 
 /* r300_render: Vertex and index buffer primitive emission. */
+#define R300_MAX_VBO_SIZE  (1024 * 1024)
 
 struct r300_render {
     /* Parent class */
@@ -46,7 +47,10 @@ struct r300_render {
 
     /* VBO */
     struct pipe_buffer* vbo;
-    size_t vbo_alloc_size;
+    size_t vbo_size;
+    size_t vbo_offset;
+    size_t vbo_max_used;
+    void * vbo_ptr;
 };
 
 static INLINE struct r300_render*
@@ -75,19 +79,18 @@ static boolean r300_render_allocate_vertices(struct vbuf_render* render,
     struct pipe_screen* screen = r300->context.screen;
     size_t size = (size_t)vertex_size * (size_t)count;
 
-    if (r300render->vbo && (size > r300render->vbo_alloc_size)) {
-        pipe_buffer_reference(&r300render->vbo, NULL);
-    }
-
-    if (!r300render->vbo) {
+    if (size + r300render->vbo_offset > r300render->vbo_size) 
+    {
         r300render->vbo = pipe_buffer_create(screen,
                                              64,
                                              PIPE_BUFFER_USAGE_VERTEX,
-                                             size);
+                                             R300_MAX_VBO_SIZE);
+        r300render->vbo_size = R300_MAX_VBO_SIZE;
     }
 
-    r300render->vbo_alloc_size = MAX2(size, r300render->vbo_alloc_size);
     r300render->vertex_size = vertex_size;
+    r300->vbo = r300render->vbo;
+    r300->vbo_offset = r300render->vbo_offset;
 
     return (r300render->vbo) ? TRUE : FALSE;
 }
@@ -97,8 +100,10 @@ static void* r300_render_map_vertices(struct vbuf_render* render)
     struct r300_render* r300render = r300_render(render);
     struct pipe_screen* screen = r300render->r300->context.screen;
 
-    return (unsigned char*)pipe_buffer_map(screen, r300render->vbo,
-                                           PIPE_BUFFER_USAGE_CPU_WRITE);
+    r300render->vbo_ptr = pipe_buffer_map(screen, r300render->vbo,
+                                          PIPE_BUFFER_USAGE_CPU_WRITE);
+
+    return (r300render->vbo_ptr + r300render->vbo_offset);
 }
 
 static void r300_render_unmap_vertices(struct vbuf_render* render,
@@ -107,15 +112,24 @@ static void r300_render_unmap_vertices(struct vbuf_render* render,
 {
     struct r300_render* r300render = r300_render(render);
     struct pipe_screen* screen = r300render->r300->context.screen;
+    CS_LOCALS(r300render->r300);
+    BEGIN_CS(2);
+    OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, max);
+    END_CS;
 
+    r300render->vbo_max_used = MAX2(r300render->vbo_max_used, 
+                                    r300render->vertex_size * (max + 1));
     pipe_buffer_unmap(screen, r300render->vbo);
 }
 
 static void r300_render_release_vertices(struct vbuf_render* render)
 {
     struct r300_render* r300render = r300_render(render);
+    struct r300_context* r300 = r300render->r300;
 
-    pipe_buffer_reference(&r300render->vbo, NULL);
+    r300render->vbo_offset += r300render->vbo_max_used;
+    r300render->vbo_max_used = 0;
+    r300->vbo = NULL;
 }
 
 static boolean r300_render_set_primitive(struct vbuf_render* render,
@@ -163,14 +177,12 @@ static boolean r300_render_set_primitive(struct vbuf_render* render,
     return TRUE;
 }
 
-static void prepare_render(struct r300_render* render, unsigned count)
+static void r300_prepare_render(struct r300_render* render, unsigned count)
 {
     struct r300_context* r300 = render->r300;
 
     CS_LOCALS(r300);
 
-    r300->vbo = render->vbo;
-
     r300_emit_dirty_state(r300);
 }
 
@@ -183,7 +195,7 @@ static void r300_render_draw_arrays(struct vbuf_render* render,
 
     CS_LOCALS(r300);
 
-    prepare_render(r300render, count);
+    r300_prepare_render(r300render, count);
 
     DBG(r300, DBG_DRAW, "r300: Doing vbuf render, count %d\n", count);
 
@@ -208,7 +220,7 @@ static void r300_render_draw(struct vbuf_render* render,
 
     CS_LOCALS(r300);
 
-    prepare_render(r300render, count);
+    r300_prepare_render(r300render, count);
 
     /* Send our indices into an index buffer. */
     index_buffer = pipe_buffer_create(screen, 64, PIPE_BUFFER_USAGE_VERTEX,
@@ -217,25 +229,7 @@ static void r300_render_draw(struct vbuf_render* render,
         return;
     }
 
-/*
-    index_map = pipe_buffer_map(screen, index_buffer,
-                                PIPE_BUFFER_USAGE_CPU_WRITE);
-    memcpy(index_map, indices, count);
-    pipe_buffer_unmap(screen, index_buffer);
-
-    debug_printf("r300: Doing indexbuf render, count %d\n", count);
-
-    BEGIN_CS(8);
-    OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 0);
-    OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
-           r300render->hwprim);
-    OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER, 2);
-    OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2));
-    OUT_CS_INDEX_RELOC(index_buffer, 0, count, RADEON_GEM_DOMAIN_GTT, 0, 0);
-    END_CS; */
-
-    BEGIN_CS(4 + (count+1)/2);
-    OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, count);
+    BEGIN_CS(2 + (count+1)/2);
     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count+1)/2);
     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
            r300render->hwprim);
@@ -273,6 +267,10 @@ static struct vbuf_render* r300_render_create(struct r300_context* r300)
     r300render->base.release_vertices = r300_render_release_vertices;
     r300render->base.destroy = r300_render_destroy;
 
+    r300render->vbo = NULL;
+    r300render->vbo_size = 0;
+    r300render->vbo_offset = 0;
+
     return &r300render->base;
 }