diff options
Diffstat (limited to 'src/mesa/vbo/vbo_exec_draw.c')
| -rw-r--r-- | src/mesa/vbo/vbo_exec_draw.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/src/mesa/vbo/vbo_exec_draw.c b/src/mesa/vbo/vbo_exec_draw.c new file mode 100644 index 00000000000..f665c64c7ac --- /dev/null +++ b/src/mesa/vbo/vbo_exec_draw.c @@ -0,0 +1,199 @@ +/* + * Mesa 3-D graphics library + * Version: 5.1 + * + * Copyright (C) 1999-2003 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 <[email protected]> + */ + +#include "glheader.h" +#include "context.h" +#include "enums.h" +#include "state.h" +#include "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: + 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( struct vbo_exec_context *exec ) +{ + struct gl_client_array *arrays = exec->vtx.arrays; + GLuint count = exec->vtx.vert_count; + GLubyte *data = exec->vtx.buffer_map; + GLuint attr; + + memcpy(arrays, exec->legacy_currval, 16 * sizeof(arrays[0])); + memcpy(arrays + 16, exec->mat_currval, 16 * sizeof(arrays[0])); + + /* Make all active attributes (including edgeflag) available as + * arrays of floats. + */ + for (attr = 0; attr < VBO_ATTRIB_MAX ; attr++) { + if (exec->vtx.attrsz[attr]) { + arrays[attr].Ptr = (void *)data; + arrays[attr].Size = exec->vtx.attrsz[attr]; + 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; + arrays[attr].BufferObj = exec->vtx.bufferobj; /* NullBufferObj */ + arrays[attr]._MaxElement = count; /* ??? */ + + data += exec->vtx.attrsz[attr] * 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( exec ); + + vbo_context(ctx)->draw_prims( ctx, + exec->vtx.inputs, + exec->vtx.prim, + exec->vtx.prim_count, + NULL, + 0, + exec->vtx.vert_count ); + } + } + + exec->vtx.prim_count = 0; + exec->vtx.vert_count = 0; + exec->vtx.vbptr = (GLfloat *)exec->vtx.buffer_map; +} |