/************************************************************************** * * Copyright 2007 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, 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 VMWARE 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_bitmap.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 "util/u_draw.h" #include "draw/draw_private.h" #include "draw/draw_context.h" /** * 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 } /** * Helper for drawing current vertex arrays. */ static void draw_arrays(struct draw_context *draw, unsigned mode, unsigned start, unsigned count) { struct pipe_draw_info info; util_draw_init_info(&info); info.mode = mode; info.start = start; info.count = count; info.min_index = start; info.max_index = start + count - 1; draw_vbo(draw, &info); } /** * 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. */ void st_feedback_draw_vbo(struct gl_context *ctx, 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 gl_transform_feedback_object *tfb_vertcount, unsigned stream, struct gl_buffer_object *indirect) { struct st_context *st = st_context(ctx); struct pipe_context *pipe = st->pipe; struct draw_context *draw = st_get_draw_context(st); 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_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {NULL}; struct pipe_transfer *ib_transfer = NULL; const struct gl_vertex_array **arrays = ctx->Array._DrawArrays; GLuint attr, i; const GLubyte *low_addr = NULL; const void *mapped_indices = NULL; if (!draw) return; st_flush_bitmap_cache(st); st_invalidate_readpix_cache(st); st_validate_state(st, ST_PIPELINE_RENDER); if (!index_bounds_valid) vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index, nr_prims); /* 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_states(draw, 0, 1, &st->state.viewport[0]); 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); /* Find the lowest address of the arrays we're drawing */ if (vp->num_inputs) { low_addr = arrays[vp->index_to_input[0]]->Ptr; for (attr = 1; attr < vp->num_inputs; attr++) { const GLubyte *start = arrays[vp->index_to_input[attr]]->Ptr; low_addr = MIN2(low_addr, start); } } /* 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_vertex_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.resource = NULL; vbuffers[attr].is_user_buffer = false; pipe_resource_reference(&vbuffers[attr].buffer.resource, stobj->buffer); vbuffers[attr].buffer_offset = pointer_to_offset(low_addr); velements[attr].src_offset = arrays[mesaAttr]->Ptr - low_addr; /* map the attrib buffer */ map = pipe_buffer_map(pipe, vbuffers[attr].buffer.resource, PIPE_TRANSFER_READ, &vb_transfer[attr]); draw_set_mapped_vertex_buffer(draw, attr, map, vbuffers[attr].buffer.resource->width0); } else { vbuffers[attr].buffer.user = arrays[mesaAttr]->Ptr; vbuffers[attr].is_user_buffer = true; vbuffers[attr].buffer_offset = 0; velements[attr].src_offset = 0; draw_set_mapped_vertex_buffer(draw, attr, vbuffers[attr].buffer.user, ~0); } /* common-case setup */ vbuffers[attr].stride = arrays[mesaAttr]->StrideB; /* in bytes */ 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, arrays[mesaAttr]->Integer); assert(velements[attr].src_format); /* tell draw about this attribute */ #if 0 draw_set_vertex_buffer(draw, attr, &vbuffer[attr]); #endif } draw_set_vertex_buffers(draw, 0, vp->num_inputs, vbuffers); draw_set_vertex_elements(draw, vp->num_inputs, velements); unsigned start = 0; if (ib) { struct gl_buffer_object *bufobj = ib->obj; unsigned index_size = ib->index_size; if (index_size == 0) goto out_unref_vertex; if (bufobj && bufobj->Name) { struct st_buffer_object *stobj = st_buffer_object(bufobj); start = pointer_to_offset(ib->ptr) / index_size; mapped_indices = pipe_buffer_map(pipe, stobj->buffer, PIPE_TRANSFER_READ, &ib_transfer); } else { mapped_indices = ib->ptr; } draw_set_indexes(draw, (ubyte *) mapped_indices, index_size, ~0); } /* set the constant buffer */ draw_set_mapped_constant_buffer(st->draw, PIPE_SHADER_VERTEX, 0, st->state.constants[PIPE_SHADER_VERTEX].ptr, st->state.constants[PIPE_SHADER_VERTEX].size); /* draw here */ for (i = 0; i < nr_prims; i++) { draw_arrays(draw, prims[i].mode, start + prims[i].start, prims[i].count); } /* * unmap vertex/index buffers */ if (ib) { draw_set_indexes(draw, NULL, 0, 0); if (ib_transfer) pipe_buffer_unmap(pipe, ib_transfer); } out_unref_vertex: for (attr = 0; attr < vp->num_inputs; attr++) { if (vb_transfer[attr]) pipe_buffer_unmap(pipe, vb_transfer[attr]); draw_set_mapped_vertex_buffer(draw, attr, NULL, 0); pipe_vertex_buffer_unreference(&vbuffers[attr]); } draw_set_vertex_buffers(draw, 0, vp->num_inputs, NULL); }