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authormarha <marha@users.sourceforge.net>2011-10-26 10:58:41 +0200
committermarha <marha@users.sourceforge.net>2011-10-26 10:58:41 +0200
commit4f005bade376d15ee60e90ca45a831aff9725087 (patch)
tree5abdbe5a7c55acf9e30c533414796f629fa9e47c /mesalib/src/mesa/state_tracker/st_draw.c
parent9f986778bd4393c5a9108426969d45aa7f10f334 (diff)
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libX11 libXft mesa mkfontscale pixman xserver git update 26 okt 2011
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_draw.c')
-rw-r--r--mesalib/src/mesa/state_tracker/st_draw.c245
1 files changed, 213 insertions, 32 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_draw.c b/mesalib/src/mesa/state_tracker/st_draw.c
index 574802084..ff3008a5f 100644
--- a/mesalib/src/mesa/state_tracker/st_draw.c
+++ b/mesalib/src/mesa/state_tracker/st_draw.c
@@ -353,9 +353,26 @@ setup_interleaved_attribs(struct gl_context *ctx,
struct pipe_context *pipe = st->pipe;
GLuint attr;
const GLubyte *low_addr = NULL;
-
- /* Find the lowest address of the arrays we're drawing */
+ GLboolean usingVBO; /* all arrays in a VBO? */
+ struct gl_buffer_object *bufobj;
+ GLuint user_buffer_size = 0;
+ GLuint vertex_size = 0; /* bytes per vertex, in bytes */
+ GLsizei stride;
+
+ /* Find the lowest address of the arrays we're drawing,
+ * Init bufobj and stride.
+ */
if (vpv->num_inputs) {
+ const GLuint mesaAttr0 = vp->index_to_input[0];
+ const struct gl_client_array *array = arrays[mesaAttr0];
+
+ /* Since we're doing interleaved arrays, we know there'll be at most
+ * one buffer object and the stride will be the same for all arrays.
+ * Grab them now.
+ */
+ bufobj = array->BufferObj;
+ stride = array->StrideB;
+
low_addr = arrays[vp->index_to_input[0]]->Ptr;
for (attr = 1; attr < vpv->num_inputs; attr++) {
@@ -363,44 +380,24 @@ setup_interleaved_attribs(struct gl_context *ctx,
low_addr = MIN2(low_addr, start);
}
}
+ else {
+ /* not sure we'll ever have zero inputs, but play it safe */
+ bufobj = NULL;
+ stride = 0;
+ low_addr = 0;
+ }
+
+ /* are the arrays in user space? */
+ usingVBO = bufobj && _mesa_is_bufferobj(bufobj);
for (attr = 0; attr < vpv->num_inputs; attr++) {
const GLuint mesaAttr = vp->index_to_input[attr];
const struct gl_client_array *array = arrays[mesaAttr];
- struct gl_buffer_object *bufobj = array->BufferObj;
- struct st_buffer_object *stobj = st_buffer_object(bufobj);
unsigned src_offset = (unsigned) (array->Ptr - low_addr);
GLuint element_size = array->_ElementSize;
- GLsizei stride = array->StrideB;
assert(element_size == array->Size * _mesa_sizeof_type(array->Type));
- if (attr == 0) {
- if (bufobj && _mesa_is_bufferobj(bufobj)) {
- vbuffer->buffer = NULL;
- pipe_resource_reference(&vbuffer->buffer, stobj->buffer);
- vbuffer->buffer_offset = pointer_to_offset(low_addr);
- }
- else {
- uint divisor = array->InstanceDivisor;
- uint last_index = divisor ? num_instances / divisor : max_index;
- uint bytes = src_offset + stride * last_index + element_size;
-
- vbuffer->buffer = pipe_user_buffer_create(pipe->screen,
- (void*) low_addr,
- bytes,
- PIPE_BIND_VERTEX_BUFFER);
- vbuffer->buffer_offset = 0;
-
- /* Track user vertex buffers. */
- pipe_resource_reference(&st->user_attrib[0].buffer, vbuffer->buffer);
- st->user_attrib[0].element_size = element_size;
- st->user_attrib[0].stride = stride;
- st->num_user_attribs = 1;
- }
- vbuffer->stride = stride; /* in bytes */
- }
-
velements[attr].src_offset = src_offset;
velements[attr].instance_divisor = array->InstanceDivisor;
velements[attr].vertex_buffer_index = 0;
@@ -409,6 +406,54 @@ setup_interleaved_attribs(struct gl_context *ctx,
array->Format,
array->Normalized);
assert(velements[attr].src_format);
+
+ if (!usingVBO) {
+ /* how many bytes referenced by this attribute array? */
+ uint divisor = array->InstanceDivisor;
+ uint last_index = divisor ? num_instances / divisor : max_index;
+ uint bytes = src_offset + stride * last_index + element_size;
+
+ user_buffer_size = MAX2(user_buffer_size, bytes);
+
+ /* update vertex size */
+ vertex_size = MAX2(vertex_size, src_offset + element_size);
+ }
+ }
+
+ /*
+ * Return the vbuffer info and setup user-space attrib info, if needed.
+ */
+ if (vpv->num_inputs == 0) {
+ /* just defensive coding here */
+ vbuffer->buffer = NULL;
+ vbuffer->buffer_offset = 0;
+ vbuffer->stride = 0;
+ st->num_user_attribs = 0;
+ }
+ else if (usingVBO) {
+ /* all interleaved arrays in a VBO */
+ struct st_buffer_object *stobj = st_buffer_object(bufobj);
+
+ vbuffer->buffer = NULL;
+ pipe_resource_reference(&vbuffer->buffer, stobj->buffer);
+ vbuffer->buffer_offset = pointer_to_offset(low_addr);
+ vbuffer->stride = stride;
+ st->num_user_attribs = 0;
+ }
+ else {
+ /* all interleaved arrays in user memory */
+ vbuffer->buffer = pipe_user_buffer_create(pipe->screen,
+ (void*) low_addr,
+ user_buffer_size,
+ PIPE_BIND_VERTEX_BUFFER);
+ vbuffer->buffer_offset = 0;
+ vbuffer->stride = stride;
+
+ /* Track user vertex buffers. */
+ pipe_resource_reference(&st->user_attrib[0].buffer, vbuffer->buffer);
+ st->user_attrib[0].element_size = vertex_size;
+ st->user_attrib[0].stride = stride;
+ st->num_user_attribs = 1;
}
}
@@ -582,6 +627,127 @@ check_uniforms(struct gl_context *ctx)
}
}
+/** Helper code for primitive restart fallback */
+#define DO_DRAW(pipe, cur_start, cur_count) \
+ do { \
+ info.start = cur_start; \
+ info.count = cur_count; \
+ if (u_trim_pipe_prim(info.mode, &info.count)) { \
+ if (transfer) \
+ pipe_buffer_unmap(pipe, transfer); \
+ pipe->draw_vbo(pipe, &info); \
+ if (transfer) { \
+ ptr = pipe_buffer_map(pipe, ibuffer->buffer, PIPE_TRANSFER_READ, &transfer); \
+ assert(ptr != NULL); \
+ ptr = ADD_POINTERS(ptr, ibuffer->offset); \
+ } \
+ } \
+ } while(0)
+
+/** More helper code for primitive restart fallback */
+#define PRIM_RESTART_LOOP(elements) \
+ do { \
+ for (i = start; i < end; i++) { \
+ if (elements[i] == info.restart_index) { \
+ if (cur_count > 0) { \
+ /* draw elts up to prev pos */ \
+ DO_DRAW(pipe, cur_start, cur_count); \
+ } \
+ /* begin new prim at next elt */ \
+ cur_start = i + 1; \
+ cur_count = 0; \
+ } \
+ else { \
+ cur_count++; \
+ } \
+ } \
+ if (cur_count > 0) { \
+ DO_DRAW(pipe, cur_start, cur_count); \
+ } \
+ } while (0)
+
+static void
+handle_fallback_primitive_restart(struct pipe_context *pipe,
+ const struct _mesa_index_buffer *ib,
+ struct pipe_index_buffer *ibuffer,
+ struct pipe_draw_info *orig_info)
+{
+ const unsigned start = orig_info->start;
+ const unsigned count = orig_info->count;
+ const unsigned end = start + count;
+ struct pipe_draw_info info = *orig_info;
+ struct pipe_transfer *transfer = NULL;
+ unsigned instance, i, cur_start, cur_count;
+ const void *ptr;
+
+ info.primitive_restart = FALSE;
+
+ if (!info.indexed) {
+ /* Splitting the draw arrays call is handled by the VBO module */
+ if (u_trim_pipe_prim(info.mode, &info.count))
+ pipe->draw_vbo(pipe, &info);
+
+ return;
+ }
+
+ /* info.indexed == TRUE */
+ assert(ibuffer);
+ assert(ibuffer->buffer);
+
+ if (ib) {
+ struct gl_buffer_object *bufobj = ib->obj;
+ if (bufobj && bufobj->Name) {
+ ptr = NULL;
+ }
+ else {
+ ptr = ib->ptr;
+ }
+ } else {
+ ptr = NULL;
+ }
+
+ if (!ptr)
+ ptr = pipe_buffer_map(pipe, ibuffer->buffer, PIPE_TRANSFER_READ, &transfer);
+
+ if (!ptr)
+ return;
+ ptr = ADD_POINTERS(ptr, ibuffer->offset);
+
+ /* Need to loop over instances as well to preserve draw order */
+ for (instance = 0; instance < orig_info->instance_count; instance++) {
+ info.start_instance = instance + orig_info->start_instance;
+ info.instance_count = 1;
+ cur_start = start;
+ cur_count = 0;
+
+ switch (ibuffer->index_size) {
+ case 1:
+ {
+ const ubyte *elt_ub = (const ubyte *)ptr;
+ PRIM_RESTART_LOOP(elt_ub);
+ }
+ break;
+ case 2:
+ {
+ const ushort *elt_us = (const ushort *)ptr;
+ PRIM_RESTART_LOOP(elt_us);
+ }
+ break;
+ case 4:
+ {
+ const uint *elt_ui = (const uint *)ptr;
+ PRIM_RESTART_LOOP(elt_ui);
+ }
+ break;
+ default:
+ assert(0 && "bad index_size in handle_fallback_primitive_restart()");
+ }
+ }
+
+ if (transfer)
+ pipe_buffer_unmap(pipe, transfer);
+}
+
/**
* Translate OpenGL primtive type (GL_POINTS, GL_TRIANGLE_STRIP, etc) to
@@ -794,7 +960,22 @@ st_draw_vbo(struct gl_context *ctx,
info.max_index = info.start + info.count - 1;
}
- if (u_trim_pipe_prim(info.mode, &info.count))
+ if (info.primitive_restart) {
+ /*
+ * Handle primitive restart for drivers that doesn't support it.
+ *
+ * The VBO module handles restart inside of draw_arrays for us,
+ * but we should still remove the primitive_restart flag on the
+ * info struct, the fallback function does this for us. Just
+ * remove the flag for all drivers in this case as well.
+ */
+ if (st->sw_primitive_restart || !info.indexed)
+ handle_fallback_primitive_restart(pipe, ib, &ibuffer, &info);
+ else
+ /* don't trim, restarts might be inside index list */
+ pipe->draw_vbo(pipe, &info);
+ }
+ else if (u_trim_pipe_prim(info.mode, &info.count))
pipe->draw_vbo(pipe, &info);
}