diff options
Diffstat (limited to 'src/mesa/pipe/draw/draw_vertex_shader_llvm.c')
| -rw-r--r-- | src/mesa/pipe/draw/draw_vertex_shader_llvm.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/mesa/pipe/draw/draw_vertex_shader_llvm.c b/src/mesa/pipe/draw/draw_vertex_shader_llvm.c new file mode 100644 index 0000000000..b38498efc5 --- /dev/null +++ b/src/mesa/pipe/draw/draw_vertex_shader_llvm.c @@ -0,0 +1,129 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + + /* + * Authors: + * Zack Rusin zack@tungstengraphics.com + */ + +#include "pipe/p_util.h" +#include "draw_private.h" +#include "draw_context.h" +#include "draw_vertex.h" + +#include "pipe/llvm/llvmtgsi.h" +#include "pipe/tgsi/exec/tgsi_core.h" + +static INLINE void +fetch_attrib4(const void *ptr, unsigned format, float attrib[4]) +{ + /* defaults */ + attrib[1] = 0.0; + attrib[2] = 0.0; + attrib[3] = 1.0; + switch (format) { + case PIPE_FORMAT_R32G32B32A32_FLOAT: + attrib[3] = ((float *) ptr)[3]; + /* fall-through */ + case PIPE_FORMAT_R32G32B32_FLOAT: + attrib[2] = ((float *) ptr)[2]; + /* fall-through */ + case PIPE_FORMAT_R32G32_FLOAT: + attrib[1] = ((float *) ptr)[1]; + /* fall-through */ + case PIPE_FORMAT_R32_FLOAT: + attrib[0] = ((float *) ptr)[0]; + break; + default: + assert(0); + } +} + + +/** + * Fetch vertex attributes for 'count' vertices. + */ +static INLINE +void vertex_fetch(struct draw_context *draw, + const unsigned elt, + float (*inputs)[4]) +{ + uint attr; + + printf("fetch vertex %u: \n", elt); + + /* loop over vertex attributes (vertex shader inputs) */ + for (attr = 0; attr < draw->vertex_shader->state->num_inputs; attr++) { + + unsigned buf = draw->vertex_element[attr].vertex_buffer_index; + const void *src + = (const void *) ((const ubyte *) draw->mapped_vbuffer[buf] + + draw->vertex_buffer[buf].buffer_offset + + draw->vertex_element[attr].src_offset + + elt * draw->vertex_buffer[buf].pitch); + float p[4]; + + fetch_attrib4(src, draw->vertex_element[attr].src_format, p); + + printf("> %u: %f %f %f %f\n", attr, p[0], p[1], p[2], p[3]); + + inputs[attr][0] = p[0]; /*X*/ + inputs[attr][1] = p[1]; /*Y*/ + inputs[attr][2] = p[2]; /*Z*/ + inputs[attr][3] = p[3]; /*W*/ + } +} + + +/** + * Called by the draw module when the vertx cache needs to be flushed. + * This involves running the vertex shader. + */ +void draw_vertex_shader_queue_flush_llvm(struct draw_context *draw) +{ + unsigned i; + + struct vertex_header *dests[VS_QUEUE_LENGTH]; + float inputs[VS_QUEUE_LENGTH][PIPE_MAX_SHADER_INPUTS][4]; + float (*consts)[4] = (float (*)[4]) draw->mapped_constants; + struct ga_llvm_prog *prog = draw->vertex_shader->state->llvm_prog; + + fprintf(stderr, "XX q(%d) ", draw->vs.queue_nr); + + /* fetch the inputs */ + for (i = 0; i < draw->vs.queue_nr; ++i) { + unsigned elt = draw->vs.queue[i].elt; + dests[i] = draw->vs.queue[i].dest; + vertex_fetch(draw, elt, inputs[i]); + } + + /* batch execute the shaders on all the vertices */ + ga_llvm_prog_exec(prog, inputs, dests, consts, + draw->vs.queue_nr); + + draw->vs.queue_nr = 0; +} |