diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/i915/i915_prim_vbuf.c | 149 |
1 files changed, 122 insertions, 27 deletions
diff --git a/src/gallium/drivers/i915/i915_prim_vbuf.c b/src/gallium/drivers/i915/i915_prim_vbuf.c index 21d4a9c91f5..5d1d2c13f8b 100644 --- a/src/gallium/drivers/i915/i915_prim_vbuf.c +++ b/src/gallium/drivers/i915/i915_prim_vbuf.c @@ -52,7 +52,7 @@ #include "i915_state.h" -#undef VBUF_MAP_BUFFER +#define VBUF_MAP_BUFFER /** * Primitive renderer for i915. @@ -78,9 +78,12 @@ struct i915_vbuf_render { struct i915_winsys_buffer *vbo; size_t vbo_size; /**< current size of allocated buffer */ size_t vbo_alloc_size; /**< minimum buffer size to allocate */ - size_t vbo_offset; + size_t vbo_hw_offset; /**< offset that we program the hardware with */ + size_t vbo_sw_offset; /**< offset that we work with */ + size_t vbo_index; /**< index offset to be added to all indices */ void *vbo_ptr; size_t vbo_max_used; + size_t vbo_max_index; /**< index offset to be added to all indices */ #ifndef VBUF_MAP_BUFFER size_t map_used_start; @@ -100,6 +103,14 @@ i915_vbuf_render(struct vbuf_render *render) return (struct i915_vbuf_render *)render; } +/** + * If vbo state differs between renderer and context + * push state to the context. This function pushes + * hw_offset to i915->vbo_offset and vbo to i915->vbo. + * + * Side effects: + * May updates context vbo_offset and vbo fields. + */ static void i915_vbuf_update_vbo_state(struct vbuf_render *render) { @@ -107,13 +118,20 @@ i915_vbuf_update_vbo_state(struct vbuf_render *render) struct i915_context *i915 = i915_render->i915; if (i915->vbo != i915_render->vbo || - i915->vbo_offset != i915_render->vbo_offset) { + i915->vbo_offset != i915_render->vbo_hw_offset) { i915->vbo = i915_render->vbo; - i915->vbo_offset = i915_render->vbo_offset; + i915->vbo_offset = i915_render->vbo_hw_offset; i915->dirty |= I915_NEW_VBO; } } +/** + * Callback exported to the draw module. + * Returns the current vertex_info. + * + * Side effects: + * If state is dirty update derived state. + */ static const struct vertex_info * i915_vbuf_render_get_vertex_info(struct vbuf_render *render) { @@ -128,12 +146,18 @@ i915_vbuf_render_get_vertex_info(struct vbuf_render *render) return &i915->current.vertex_info; } +/** + * Reserve space in the vbo for vertices. + * + * Side effects: + * None. + */ static boolean i915_vbuf_render_reserve(struct i915_vbuf_render *i915_render, size_t size) { struct i915_context *i915 = i915_render->i915; - if (i915_render->vbo_size < size + i915_render->vbo_offset) + if (i915_render->vbo_size < size + i915_render->vbo_sw_offset) return FALSE; if (i915->vbo_flushed) @@ -142,6 +166,13 @@ i915_vbuf_render_reserve(struct i915_vbuf_render *i915_render, size_t size) return TRUE; } +/** + * Allocate a new vbo buffer should there not be enough space for + * the requested number of vertices by the draw module. + * + * Side effects: + * Updates hw_offset, sw_offset, index and allocates a new buffer. + */ static void i915_vbuf_render_new_buf(struct i915_vbuf_render *i915_render, size_t size) { @@ -154,7 +185,9 @@ i915_vbuf_render_new_buf(struct i915_vbuf_render *i915_render, size_t size) i915->vbo_flushed = 0; i915_render->vbo_size = MAX2(size, i915_render->vbo_alloc_size); - i915_render->vbo_offset = 0; + i915_render->vbo_hw_offset = 0; + i915_render->vbo_sw_offset = 0; + i915_render->vbo_index = 0; #ifndef VBUF_MAP_BUFFER if (i915_render->vbo_size > i915_render->map_size) { @@ -168,6 +201,14 @@ i915_vbuf_render_new_buf(struct i915_vbuf_render *i915_render, size_t size) 64, I915_NEW_VERTEX); } +/** + * Callback exported to the draw module. + * + * Side effects: + * Updates hw_offset, sw_offset, index and may allocate + * a new buffer. Also updates may update the vbo state + * on the i915 context. + */ static boolean i915_vbuf_render_allocate_vertices(struct vbuf_render *render, ushort vertex_size, @@ -175,10 +216,29 @@ i915_vbuf_render_allocate_vertices(struct vbuf_render *render, { struct i915_vbuf_render *i915_render = i915_vbuf_render(render); size_t size = (size_t)vertex_size * (size_t)nr_vertices; + size_t offset; + + /* + * Align sw_offset with first multiple of vertex size from hw_offset. + * Set index to be the multiples from from hw_offset to sw_offset. + * i915_vbuf_render_new_buf will reset index, sw_offset, hw_offset + * when it allocates a new buffer this is correct. + */ + { + offset = i915_render->vbo_sw_offset - i915_render->vbo_hw_offset; + offset = util_align_npot(offset, vertex_size); + i915_render->vbo_sw_offset = i915_render->vbo_hw_offset + offset; + i915_render->vbo_index = offset / vertex_size; + } if (!i915_vbuf_render_reserve(i915_render, size)) i915_vbuf_render_new_buf(i915_render, size); + /* + * If a new buffer has been alocated sw_offset, + * hw_offset & index will be reset by new_buf + */ + i915_render->vertex_size = vertex_size; i915_vbuf_update_vbo_state(render); @@ -200,7 +260,7 @@ i915_vbuf_render_map_vertices(struct vbuf_render *render) #ifdef VBUF_MAP_BUFFER i915_render->vbo_ptr = iws->buffer_map(iws, i915_render->vbo, TRUE); - return (unsigned char *)i915_render->vbo_ptr + i915_render->vbo_offset; + return (unsigned char *)i915_render->vbo_ptr + i915_render->vbo_sw_offset; #else (void)iws; return (unsigned char *)i915_render->vbo_ptr; @@ -216,6 +276,7 @@ i915_vbuf_render_unmap_vertices(struct vbuf_render *render, struct i915_context *i915 = i915_render->i915; struct i915_winsys *iws = i915->iws; + i915_render->vbo_max_index = max_index; i915_render->vbo_max_used = MAX2(i915_render->vbo_max_used, i915_render->vertex_size * (max_index + 1)); #ifdef VBUF_MAP_BUFFER iws->buffer_unmap(iws, i915_render->vbo); @@ -223,13 +284,36 @@ i915_vbuf_render_unmap_vertices(struct vbuf_render *render, i915_render->map_used_start = i915_render->vertex_size * min_index; i915_render->map_used_end = i915_render->vertex_size * (max_index + 1); iws->buffer_write(iws, i915_render->vbo, - i915_render->map_used_start + i915_render->vbo_offset, + i915_render->map_used_start + i915_render->vbo_sw_offset, i915_render->map_used_end - i915_render->map_used_start, (unsigned char *)i915_render->vbo_ptr + i915_render->map_used_start); #endif } +/** + * Ensure that the given max_index given is not larger ushort max. + * If it is larger then ushort max it advanced the hw_offset to the + * same position in the vbo as sw_offset and set index to zero. + * + * Side effects: + * On failure update hw_offset and index. + */ +static void +i915_vbuf_ensure_index_bounds(struct vbuf_render *render, + unsigned max_index) +{ + struct i915_vbuf_render *i915_render = i915_vbuf_render(render); + + if (max_index + i915_render->vbo_index < ((1 << 17) - 1)) + return; + + i915_render->vbo_hw_offset = i915_render->vbo_sw_offset; + i915_render->vbo_index = 0; + + i915_vbuf_update_vbo_state(render); +} + static boolean i915_vbuf_render_set_primitive(struct vbuf_render *render, unsigned prim) @@ -269,11 +353,11 @@ i915_vbuf_render_set_primitive(struct vbuf_render *render, case PIPE_PRIM_QUADS: i915_render->hwprim = PRIM3D_TRILIST; i915_render->fallback = PIPE_PRIM_QUADS; - return TRUE; + return FALSE; case PIPE_PRIM_QUAD_STRIP: i915_render->hwprim = PRIM3D_TRILIST; i915_render->fallback = PIPE_PRIM_QUAD_STRIP; - return TRUE; + return FALSE; case PIPE_PRIM_POLYGON: i915_render->hwprim = PRIM3D_POLY; i915_render->fallback = 0; @@ -295,7 +379,9 @@ draw_arrays_generate_indices(struct vbuf_render *render, struct i915_vbuf_render *i915_render = i915_vbuf_render(render); struct i915_context *i915 = i915_render->i915; unsigned i; - unsigned end = start + nr; + unsigned end = start + nr + i915_render->vbo_index; + start += i915_render->vbo_index; + switch(type) { case 0: for (i = start; i+1 < end; i += 2) @@ -359,16 +445,18 @@ draw_arrays_fallback(struct vbuf_render *render, struct i915_context *i915 = i915_render->i915; unsigned nr_indices; + nr_indices = draw_arrays_calc_nr_indices(nr, i915_render->fallback); + if (!nr_indices) + return; + + i915_vbuf_ensure_index_bounds(render, start + nr_indices); + if (i915->dirty) i915_update_derived(i915); if (i915->hardware_dirty) i915_emit_hardware_state(i915); - nr_indices = draw_arrays_calc_nr_indices(nr, i915_render->fallback); - if (!nr_indices) - return; - if (!BEGIN_BATCH(1 + (nr_indices + 1)/2, 1)) { FLUSH_BATCH(NULL); @@ -409,6 +497,9 @@ i915_vbuf_render_draw_arrays(struct vbuf_render *render, return; } + i915_vbuf_ensure_index_bounds(render, start + nr); + start += i915_render->vbo_index; + if (i915->dirty) i915_update_derived(i915); @@ -454,35 +545,36 @@ draw_generate_indices(struct vbuf_render *render, struct i915_vbuf_render *i915_render = i915_vbuf_render(render); struct i915_context *i915 = i915_render->i915; unsigned i; + unsigned o = i915_render->vbo_index; switch(type) { case 0: for (i = 0; i + 1 < nr_indices; i += 2) { - OUT_BATCH(indices[i] | indices[i+1] << 16); + OUT_BATCH((o+indices[i]) | (o+indices[i+1]) << 16); } if (i < nr_indices) { - OUT_BATCH(indices[i]); + OUT_BATCH((o+indices[i])); } break; case PIPE_PRIM_LINE_LOOP: if (nr_indices >= 2) { for (i = 1; i < nr_indices; i++) - OUT_BATCH(indices[i-1] | indices[i] << 16); - OUT_BATCH(indices[i-1] | indices[0] << 16); + OUT_BATCH((o+indices[i-1]) | (o+indices[i]) << 16); + OUT_BATCH((o+indices[i-1]) | (o+indices[0]) << 16); } break; case PIPE_PRIM_QUADS: for (i = 0; i + 3 < nr_indices; i += 4) { - OUT_BATCH(indices[i+0] | indices[i+1] << 16); - OUT_BATCH(indices[i+3] | indices[i+1] << 16); - OUT_BATCH(indices[i+2] | indices[i+3] << 16); + OUT_BATCH((o+indices[i+0]) | (o+indices[i+1]) << 16); + OUT_BATCH((o+indices[i+3]) | (o+indices[i+1]) << 16); + OUT_BATCH((o+indices[i+2]) | (o+indices[i+3]) << 16); } break; case PIPE_PRIM_QUAD_STRIP: for (i = 0; i + 3 < nr_indices; i += 2) { - OUT_BATCH(indices[i+0] | indices[i+1] << 16); - OUT_BATCH(indices[i+3] | indices[i+2] << 16); - OUT_BATCH(indices[i+0] | indices[i+3] << 16); + OUT_BATCH((o+indices[i+0]) | (o+indices[i+1]) << 16); + OUT_BATCH((o+indices[i+3]) | (o+indices[i+2]) << 16); + OUT_BATCH((o+indices[i+0]) | (o+indices[i+3]) << 16); } break; default: @@ -527,6 +619,8 @@ i915_vbuf_render_draw_elements(struct vbuf_render *render, if (!nr_indices) return; + i915_vbuf_ensure_index_bounds(render, i915_render->vbo_max_index); + if (i915->dirty) i915_update_derived(i915); @@ -567,7 +661,7 @@ i915_vbuf_render_release_vertices(struct vbuf_render *render) { struct i915_vbuf_render *i915_render = i915_vbuf_render(render); - i915_render->vbo_offset += i915_render->vbo_max_used; + i915_render->vbo_sw_offset += i915_render->vbo_max_used; i915_render->vbo_max_used = 0; /* @@ -622,7 +716,8 @@ i915_vbuf_render_create(struct i915_context *i915) i915_render->vbo = NULL; i915_render->vbo_ptr = NULL; i915_render->vbo_size = 0; - i915_render->vbo_offset = 0; + i915_render->vbo_hw_offset = 0; + i915_render->vbo_sw_offset = 0; i915_render->vbo_alloc_size = i915_render->base.max_vertex_buffer_bytes * 4; #ifdef VBUF_USE_POOL |