diff options
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_draw_feedback.c')
| -rw-r--r-- | mesalib/src/mesa/state_tracker/st_draw_feedback.c | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_draw_feedback.c b/mesalib/src/mesa/state_tracker/st_draw_feedback.c new file mode 100644 index 000000000..b05e660ae --- /dev/null +++ b/mesalib/src/mesa/state_tracker/st_draw_feedback.c @@ -0,0 +1,286 @@ +/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+#include "main/imports.h"
+#include "main/image.h"
+#include "main/macros.h"
+
+#include "vbo/vbo.h"
+
+#include "st_context.h"
+#include "st_atom.h"
+#include "st_cb_bufferobjects.h"
+#include "st_draw.h"
+#include "st_program.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "util/u_inlines.h"
+
+#include "draw/draw_private.h"
+#include "draw/draw_context.h"
+
+
+#if FEATURE_feedback || FEATURE_rastpos
+
+/**
+ * Set the (private) draw module's post-transformed vertex format when in
+ * GL_SELECT or GL_FEEDBACK mode or for glRasterPos.
+ */
+static void
+set_feedback_vertex_format(struct gl_context *ctx)
+{
+#if 0
+ struct st_context *st = st_context(ctx);
+ struct vertex_info vinfo;
+ GLuint i;
+
+ memset(&vinfo, 0, sizeof(vinfo));
+
+ if (ctx->RenderMode == GL_SELECT) {
+ assert(ctx->RenderMode == GL_SELECT);
+ vinfo.num_attribs = 1;
+ vinfo.format[0] = FORMAT_4F;
+ vinfo.interp_mode[0] = INTERP_LINEAR;
+ }
+ else {
+ /* GL_FEEDBACK, or glRasterPos */
+ /* emit all attribs (pos, color, texcoord) as GLfloat[4] */
+ vinfo.num_attribs = st->state.vs->cso->state.num_outputs;
+ for (i = 0; i < vinfo.num_attribs; i++) {
+ vinfo.format[i] = FORMAT_4F;
+ vinfo.interp_mode[i] = INTERP_LINEAR;
+ }
+ }
+
+ draw_set_vertex_info(st->draw, &vinfo);
+#endif
+}
+
+
+/**
+ * Called by VBO to draw arrays when in selection or feedback mode and
+ * to implement glRasterPos.
+ * This is very much like the normal draw_vbo() function above.
+ * Look at code refactoring some day.
+ * Might move this into the failover module some day.
+ */
+void
+st_feedback_draw_vbo(struct gl_context *ctx,
+ const struct gl_client_array **arrays,
+ const struct _mesa_prim *prims,
+ GLuint nr_prims,
+ const struct _mesa_index_buffer *ib,
+ GLboolean index_bounds_valid,
+ GLuint min_index,
+ GLuint max_index)
+{
+ struct st_context *st = st_context(ctx);
+ struct pipe_context *pipe = st->pipe;
+ struct draw_context *draw = st->draw;
+ const struct st_vertex_program *vp;
+ const struct pipe_shader_state *vs;
+ struct pipe_vertex_buffer vbuffers[PIPE_MAX_SHADER_INPUTS];
+ struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
+ struct pipe_index_buffer ibuffer;
+ struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS];
+ struct pipe_transfer *ib_transfer = NULL;
+ struct pipe_transfer *cb_transfer;
+ GLuint attr, i;
+ ubyte *mapped_constants;
+ const void *mapped_indices = NULL;
+
+ assert(draw);
+
+ st_validate_state(st);
+
+ if (!index_bounds_valid)
+ vbo_get_minmax_index(ctx, prims, ib, &min_index, &max_index);
+
+ /* must get these after state validation! */
+ vp = st->vp;
+ vs = &st->vp_variant->tgsi;
+
+ if (!st->vp_variant->draw_shader) {
+ st->vp_variant->draw_shader = draw_create_vertex_shader(draw, vs);
+ }
+
+ /*
+ * Set up the draw module's state.
+ *
+ * We'd like to do this less frequently, but the normal state-update
+ * code sends state updates to the pipe, not to our private draw module.
+ */
+ assert(draw);
+ draw_set_viewport_state(draw, &st->state.viewport);
+ draw_set_clip_state(draw, &st->state.clip);
+ draw_set_rasterizer_state(draw, &st->state.rasterizer, NULL);
+ draw_bind_vertex_shader(draw, st->vp_variant->draw_shader);
+ set_feedback_vertex_format(ctx);
+
+ /* loop over TGSI shader inputs to determine vertex buffer
+ * and attribute info
+ */
+ for (attr = 0; attr < vp->num_inputs; attr++) {
+ const GLuint mesaAttr = vp->index_to_input[attr];
+ struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
+ void *map;
+
+ if (bufobj && bufobj->Name) {
+ /* Attribute data is in a VBO.
+ * Recall that for VBOs, the gl_client_array->Ptr field is
+ * really an offset from the start of the VBO, not a pointer.
+ */
+ struct st_buffer_object *stobj = st_buffer_object(bufobj);
+ assert(stobj->buffer);
+
+ vbuffers[attr].buffer = NULL;
+ pipe_resource_reference(&vbuffers[attr].buffer, stobj->buffer);
+ vbuffers[attr].buffer_offset = pointer_to_offset(arrays[0]->Ptr);
+ velements[attr].src_offset = arrays[mesaAttr]->Ptr - arrays[0]->Ptr;
+ }
+ else {
+ /* attribute data is in user-space memory, not a VBO */
+ uint bytes = (arrays[mesaAttr]->Size
+ * _mesa_sizeof_type(arrays[mesaAttr]->Type)
+ * (max_index + 1));
+
+ /* wrap user data */
+ vbuffers[attr].buffer
+ = pipe_user_buffer_create(pipe->screen, (void *) arrays[mesaAttr]->Ptr,
+ bytes,
+ PIPE_BIND_VERTEX_BUFFER);
+ vbuffers[attr].buffer_offset = 0;
+ velements[attr].src_offset = 0;
+ }
+
+ /* common-case setup */
+ vbuffers[attr].stride = arrays[mesaAttr]->StrideB; /* in bytes */
+ vbuffers[attr].max_index = max_index;
+ velements[attr].instance_divisor = 0;
+ velements[attr].vertex_buffer_index = attr;
+ velements[attr].src_format =
+ st_pipe_vertex_format(arrays[mesaAttr]->Type,
+ arrays[mesaAttr]->Size,
+ arrays[mesaAttr]->Format,
+ arrays[mesaAttr]->Normalized);
+ assert(velements[attr].src_format);
+
+ /* tell draw about this attribute */
+#if 0
+ draw_set_vertex_buffer(draw, attr, &vbuffer[attr]);
+#endif
+
+ /* map the attrib buffer */
+ map = pipe_buffer_map(pipe, vbuffers[attr].buffer,
+ PIPE_TRANSFER_READ,
+ &vb_transfer[attr]);
+ draw_set_mapped_vertex_buffer(draw, attr, map);
+ }
+
+ draw_set_vertex_buffers(draw, vp->num_inputs, vbuffers);
+ draw_set_vertex_elements(draw, vp->num_inputs, velements);
+
+ memset(&ibuffer, 0, sizeof(ibuffer));
+ if (ib) {
+ struct gl_buffer_object *bufobj = ib->obj;
+
+ switch (ib->type) {
+ case GL_UNSIGNED_INT:
+ ibuffer.index_size = 4;
+ break;
+ case GL_UNSIGNED_SHORT:
+ ibuffer.index_size = 2;
+ break;
+ case GL_UNSIGNED_BYTE:
+ ibuffer.index_size = 1;
+ break;
+ default:
+ assert(0);
+ return;
+ }
+
+ if (bufobj && bufobj->Name) {
+ struct st_buffer_object *stobj = st_buffer_object(bufobj);
+
+ pipe_resource_reference(&ibuffer.buffer, stobj->buffer);
+ ibuffer.offset = pointer_to_offset(ib->ptr);
+
+ mapped_indices = pipe_buffer_map(pipe, stobj->buffer,
+ PIPE_TRANSFER_READ, &ib_transfer);
+ }
+ else {
+ /* skip setting ibuffer.buffer as the draw module does not use it */
+ mapped_indices = ib->ptr;
+ }
+
+ draw_set_index_buffer(draw, &ibuffer);
+ draw_set_mapped_index_buffer(draw, mapped_indices);
+ }
+
+ /* map constant buffers */
+ mapped_constants = pipe_buffer_map(pipe,
+ st->state.constants[PIPE_SHADER_VERTEX],
+ PIPE_TRANSFER_READ,
+ &cb_transfer);
+ draw_set_mapped_constant_buffer(st->draw, PIPE_SHADER_VERTEX, 0,
+ mapped_constants,
+ st->state.constants[PIPE_SHADER_VERTEX]->width0);
+
+
+ /* draw here */
+ for (i = 0; i < nr_prims; i++) {
+ draw_arrays(draw, prims[i].mode, prims[i].start, prims[i].count);
+ }
+
+
+ /* unmap constant buffers */
+ pipe_buffer_unmap(pipe, cb_transfer);
+
+ /*
+ * unmap vertex/index buffers
+ */
+ for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
+ if (draw->pt.vertex_buffer[i].buffer) {
+ pipe_buffer_unmap(pipe, vb_transfer[i]);
+ pipe_resource_reference(&draw->pt.vertex_buffer[i].buffer, NULL);
+ draw_set_mapped_vertex_buffer(draw, i, NULL);
+ }
+ }
+
+ if (ib) {
+ draw_set_mapped_index_buffer(draw, NULL);
+ draw_set_index_buffer(draw, NULL);
+
+ if (ib_transfer)
+ pipe_buffer_unmap(pipe, ib_transfer);
+ pipe_resource_reference(&ibuffer.buffer, NULL);
+ }
+}
+
+#endif /* FEATURE_feedback || FEATURE_rastpos */
+
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