| /* |
| * Mesa 3-D graphics library |
| * Version: 7.2 |
| * |
| * Copyright (C) 1999-2008 Brian Paul 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, sublicense, |
| * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL |
| * BRIAN PAUL 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: |
| * Keith Whitwell <keith@tungstengraphics.com> |
| */ |
| |
| #include "main/glheader.h" |
| #include "main/bufferobj.h" |
| #include "main/context.h" |
| #include "main/enums.h" |
| #include "main/state.h" |
| #include "main/macros.h" |
| |
| #include "vbo_context.h" |
| |
| |
| static void vbo_exec_debug_verts( struct vbo_exec_context *exec ) |
| { |
| GLuint count = exec->vtx.vert_count; |
| GLuint i; |
| |
| _mesa_printf("%s: %u vertices %d primitives, %d vertsize\n", |
| __FUNCTION__, |
| count, |
| exec->vtx.prim_count, |
| exec->vtx.vertex_size); |
| |
| for (i = 0 ; i < exec->vtx.prim_count ; i++) { |
| struct _mesa_prim *prim = &exec->vtx.prim[i]; |
| _mesa_printf(" prim %d: %s%s %d..%d %s %s\n", |
| i, |
| _mesa_lookup_enum_by_nr(prim->mode), |
| prim->weak ? " (weak)" : "", |
| prim->start, |
| prim->start + prim->count, |
| prim->begin ? "BEGIN" : "(wrap)", |
| prim->end ? "END" : "(wrap)"); |
| } |
| } |
| |
| |
| /* |
| * NOTE: Need to have calculated primitives by this point -- do it on the fly. |
| * NOTE: Old 'parity' issue is gone. |
| */ |
| static GLuint vbo_copy_vertices( struct vbo_exec_context *exec ) |
| { |
| GLuint nr = exec->vtx.prim[exec->vtx.prim_count-1].count; |
| GLuint ovf, i; |
| GLuint sz = exec->vtx.vertex_size; |
| GLfloat *dst = exec->vtx.copied.buffer; |
| GLfloat *src = ((GLfloat *)exec->vtx.buffer_map + |
| exec->vtx.prim[exec->vtx.prim_count-1].start * |
| exec->vtx.vertex_size); |
| |
| |
| switch( exec->ctx->Driver.CurrentExecPrimitive ) |
| { |
| case GL_POINTS: |
| return 0; |
| case GL_LINES: |
| ovf = nr&1; |
| for (i = 0 ; i < ovf ; i++) |
| _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); |
| return i; |
| case GL_TRIANGLES: |
| ovf = nr%3; |
| for (i = 0 ; i < ovf ; i++) |
| _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); |
| return i; |
| case GL_QUADS: |
| ovf = nr&3; |
| for (i = 0 ; i < ovf ; i++) |
| _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); |
| return i; |
| case GL_LINE_STRIP: |
| if (nr == 0) |
| return 0; |
| else { |
| _mesa_memcpy( dst, src+(nr-1)*sz, sz * sizeof(GLfloat) ); |
| return 1; |
| } |
| case GL_LINE_LOOP: |
| case GL_TRIANGLE_FAN: |
| case GL_POLYGON: |
| if (nr == 0) |
| return 0; |
| else if (nr == 1) { |
| _mesa_memcpy( dst, src+0, sz * sizeof(GLfloat) ); |
| return 1; |
| } else { |
| _mesa_memcpy( dst, src+0, sz * sizeof(GLfloat) ); |
| _mesa_memcpy( dst+sz, src+(nr-1)*sz, sz * sizeof(GLfloat) ); |
| return 2; |
| } |
| case GL_TRIANGLE_STRIP: |
| /* no parity issue, but need to make sure the tri is not drawn twice */ |
| if (nr & 1) { |
| exec->vtx.prim[exec->vtx.prim_count-1].count--; |
| } |
| /* fallthrough */ |
| case GL_QUAD_STRIP: |
| switch (nr) { |
| case 0: ovf = 0; break; |
| case 1: ovf = 1; break; |
| default: ovf = 2 + (nr&1); break; |
| } |
| for (i = 0 ; i < ovf ; i++) |
| _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); |
| return i; |
| case GL_POLYGON+1: |
| return 0; |
| default: |
| assert(0); |
| return 0; |
| } |
| } |
| |
| |
| |
| /* TODO: populate these as the vertex is defined: |
| */ |
| static void vbo_exec_bind_arrays( GLcontext *ctx ) |
| { |
| struct vbo_context *vbo = vbo_context(ctx); |
| struct vbo_exec_context *exec = &vbo->exec; |
| struct gl_client_array *arrays = exec->vtx.arrays; |
| GLuint count = exec->vtx.vert_count; |
| GLubyte *data = exec->vtx.buffer_map; |
| const GLuint *map; |
| GLuint attr; |
| |
| /* Install the default (ie Current) attributes first, then overlay |
| * all active ones. |
| */ |
| switch (get_program_mode(exec->ctx)) { |
| case VP_NONE: |
| for (attr = 0; attr < 16; attr++) { |
| exec->vtx.inputs[attr] = &vbo->legacy_currval[attr]; |
| } |
| for (attr = 0; attr < MAT_ATTRIB_MAX; attr++) { |
| exec->vtx.inputs[attr + 16] = &vbo->mat_currval[attr]; |
| } |
| map = vbo->map_vp_none; |
| break; |
| case VP_NV: |
| case VP_ARB: |
| /* The aliasing of attributes for NV vertex programs has already |
| * occurred. NV vertex programs cannot access material values, |
| * nor attributes greater than VERT_ATTRIB_TEX7. |
| */ |
| for (attr = 0; attr < 16; attr++) { |
| exec->vtx.inputs[attr] = &vbo->legacy_currval[attr]; |
| exec->vtx.inputs[attr + 16] = &vbo->generic_currval[attr]; |
| } |
| map = vbo->map_vp_arb; |
| break; |
| } |
| |
| /* Make all active attributes (including edgeflag) available as |
| * arrays of floats. |
| */ |
| for (attr = 0; attr < VERT_ATTRIB_MAX ; attr++) { |
| GLuint src = map[attr]; |
| |
| if (exec->vtx.attrsz[src]) { |
| /* override the default array set above */ |
| exec->vtx.inputs[attr] = &arrays[attr]; |
| |
| arrays[attr].Ptr = (void *)data; |
| arrays[attr].Size = exec->vtx.attrsz[src]; |
| arrays[attr].StrideB = exec->vtx.vertex_size * sizeof(GLfloat); |
| arrays[attr].Stride = exec->vtx.vertex_size * sizeof(GLfloat); |
| arrays[attr].Type = GL_FLOAT; |
| arrays[attr].Enabled = 1; |
| _mesa_reference_buffer_object(ctx, |
| &arrays[attr].BufferObj, |
| exec->vtx.bufferobj); |
| arrays[attr]._MaxElement = count; /* ??? */ |
| |
| data += exec->vtx.attrsz[src] * sizeof(GLfloat); |
| } |
| } |
| } |
| |
| |
| /** |
| * Execute the buffer and save copied verts. |
| */ |
| void vbo_exec_vtx_flush( struct vbo_exec_context *exec ) |
| { |
| if (0) |
| vbo_exec_debug_verts( exec ); |
| |
| |
| if (exec->vtx.prim_count && |
| exec->vtx.vert_count) { |
| |
| exec->vtx.copied.nr = vbo_copy_vertices( exec ); |
| |
| if (exec->vtx.copied.nr != exec->vtx.vert_count) { |
| GLcontext *ctx = exec->ctx; |
| |
| vbo_exec_bind_arrays( ctx ); |
| |
| vbo_context(ctx)->draw_prims( ctx, |
| exec->vtx.inputs, |
| exec->vtx.prim, |
| exec->vtx.prim_count, |
| NULL, |
| 0, |
| exec->vtx.vert_count - 1); |
| } |
| } |
| |
| exec->vtx.prim_count = 0; |
| exec->vtx.vert_count = 0; |
| exec->vtx.vbptr = (GLfloat *)exec->vtx.buffer_map; |
| } |