| /* |
| * 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/compiler.h" |
| #include "main/enums.h" |
| #include "main/mfeatures.h" |
| #include "main/state.h" |
| |
| #include "vbo_context.h" |
| |
| |
| #if FEATURE_beginend |
| |
| |
| static void |
| vbo_exec_debug_verts( struct vbo_exec_context *exec ) |
| { |
| GLuint count = exec->vtx.vert_count; |
| GLuint i; |
| |
| 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]; |
| printf(" prim %d: %s%s %d..%d %s %s\n", |
| i, |
| _mesa_lookup_prim_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; |
| const GLfloat *src = (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++) |
| 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++) |
| 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++) |
| memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); |
| return i; |
| case GL_LINE_STRIP: |
| if (nr == 0) { |
| return 0; |
| } |
| else { |
| 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) { |
| memcpy( dst, src+0, sz * sizeof(GLfloat) ); |
| return 1; |
| } |
| else { |
| memcpy( dst, src+0, sz * sizeof(GLfloat) ); |
| 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++) |
| memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); |
| return i; |
| case PRIM_OUTSIDE_BEGIN_END: |
| return 0; |
| default: |
| assert(0); |
| return 0; |
| } |
| } |
| |
| |
| |
| /* TODO: populate these as the vertex is defined: |
| */ |
| static void |
| vbo_exec_bind_arrays( struct gl_context *ctx ) |
| { |
| struct vbo_context *vbo = vbo_context(ctx); |
| struct vbo_exec_context *exec = &vbo->exec; |
| struct gl_client_array *arrays = exec->vtx.arrays; |
| const GLuint count = exec->vtx.vert_count; |
| const GLuint *map; |
| GLuint attr; |
| GLbitfield varying_inputs = 0x0; |
| |
| /* 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++) { |
| ASSERT(attr + 16 < Elements(exec->vtx.inputs)); |
| 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]; |
| ASSERT(attr + 16 < Elements(exec->vtx.inputs)); |
| exec->vtx.inputs[attr + 16] = &vbo->generic_currval[attr]; |
| } |
| map = vbo->map_vp_arb; |
| |
| /* check if VERT_ATTRIB_POS is not read but VERT_BIT_GENERIC0 is read. |
| * In that case we effectively need to route the data from |
| * glVertexAttrib(0, val) calls to feed into the GENERIC0 input. |
| */ |
| if ((ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_POS) == 0 && |
| (ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_GENERIC0)) { |
| exec->vtx.inputs[16] = exec->vtx.inputs[0]; |
| exec->vtx.attrsz[16] = exec->vtx.attrsz[0]; |
| exec->vtx.attrptr[16] = exec->vtx.attrptr[0]; |
| exec->vtx.attrsz[0] = 0; |
| } |
| break; |
| default: |
| assert(0); |
| } |
| |
| /* Make all active attributes (including edgeflag) available as |
| * arrays of floats. |
| */ |
| for (attr = 0; attr < VERT_ATTRIB_MAX ; attr++) { |
| const GLuint src = map[attr]; |
| |
| if (exec->vtx.attrsz[src]) { |
| GLsizeiptr offset = (GLbyte *)exec->vtx.attrptr[src] - |
| (GLbyte *)exec->vtx.vertex; |
| |
| /* override the default array set above */ |
| ASSERT(attr < Elements(exec->vtx.inputs)); |
| ASSERT(attr < Elements(exec->vtx.arrays)); /* arrays[] */ |
| exec->vtx.inputs[attr] = &arrays[attr]; |
| |
| if (_mesa_is_bufferobj(exec->vtx.bufferobj)) { |
| /* a real buffer obj: Ptr is an offset, not a pointer*/ |
| assert(exec->vtx.bufferobj->Pointer); /* buf should be mapped */ |
| assert(offset >= 0); |
| arrays[attr].Ptr = (GLubyte *)exec->vtx.bufferobj->Offset + offset; |
| } |
| else { |
| /* Ptr into ordinary app memory */ |
| arrays[attr].Ptr = (GLubyte *)exec->vtx.buffer_map + offset; |
| } |
| 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].Format = GL_RGBA; |
| arrays[attr].Enabled = 1; |
| arrays[attr]._ElementSize = arrays[attr].Size * sizeof(GLfloat); |
| _mesa_reference_buffer_object(ctx, |
| &arrays[attr].BufferObj, |
| exec->vtx.bufferobj); |
| arrays[attr]._MaxElement = count; /* ??? */ |
| |
| varying_inputs |= 1 << attr; |
| ctx->NewState |= _NEW_ARRAY; |
| } |
| } |
| |
| _mesa_set_varying_vp_inputs( ctx, varying_inputs ); |
| } |
| |
| |
| /** |
| * Unmap the VBO. This is called before drawing. |
| */ |
| static void |
| vbo_exec_vtx_unmap( struct vbo_exec_context *exec ) |
| { |
| GLenum target = GL_ARRAY_BUFFER_ARB; |
| |
| if (_mesa_is_bufferobj(exec->vtx.bufferobj)) { |
| struct gl_context *ctx = exec->ctx; |
| |
| if (ctx->Driver.FlushMappedBufferRange) { |
| GLintptr offset = exec->vtx.buffer_used - exec->vtx.bufferobj->Offset; |
| GLsizeiptr length = (exec->vtx.buffer_ptr - exec->vtx.buffer_map) * sizeof(float); |
| |
| if (length) |
| ctx->Driver.FlushMappedBufferRange(ctx, target, |
| offset, length, |
| exec->vtx.bufferobj); |
| } |
| |
| exec->vtx.buffer_used += (exec->vtx.buffer_ptr - |
| exec->vtx.buffer_map) * sizeof(float); |
| |
| assert(exec->vtx.buffer_used <= VBO_VERT_BUFFER_SIZE); |
| assert(exec->vtx.buffer_ptr != NULL); |
| |
| ctx->Driver.UnmapBuffer(ctx, exec->vtx.bufferobj); |
| exec->vtx.buffer_map = NULL; |
| exec->vtx.buffer_ptr = NULL; |
| exec->vtx.max_vert = 0; |
| } |
| } |
| |
| |
| /** |
| * Map the vertex buffer to begin storing glVertex, glColor, etc data. |
| */ |
| void |
| vbo_exec_vtx_map( struct vbo_exec_context *exec ) |
| { |
| struct gl_context *ctx = exec->ctx; |
| const GLenum target = GL_ARRAY_BUFFER_ARB; |
| const GLenum access = GL_READ_WRITE_ARB; /* for MapBuffer */ |
| const GLenum accessRange = GL_MAP_WRITE_BIT | /* for MapBufferRange */ |
| GL_MAP_INVALIDATE_RANGE_BIT | |
| GL_MAP_UNSYNCHRONIZED_BIT | |
| GL_MAP_FLUSH_EXPLICIT_BIT | |
| MESA_MAP_NOWAIT_BIT; |
| const GLenum usage = GL_STREAM_DRAW_ARB; |
| |
| if (!_mesa_is_bufferobj(exec->vtx.bufferobj)) |
| return; |
| |
| assert(!exec->vtx.buffer_map); |
| assert(!exec->vtx.buffer_ptr); |
| |
| if (VBO_VERT_BUFFER_SIZE > exec->vtx.buffer_used + 1024 && |
| ctx->Driver.MapBufferRange) { |
| /* The VBO exists and there's room for more */ |
| exec->vtx.buffer_map = |
| (GLfloat *)ctx->Driver.MapBufferRange(ctx, |
| target, |
| exec->vtx.buffer_used, |
| (VBO_VERT_BUFFER_SIZE - |
| exec->vtx.buffer_used), |
| accessRange, |
| exec->vtx.bufferobj); |
| exec->vtx.buffer_ptr = exec->vtx.buffer_map; |
| } |
| |
| if (!exec->vtx.buffer_map) { |
| /* Need to allocate a new VBO */ |
| exec->vtx.buffer_used = 0; |
| |
| ctx->Driver.BufferData(ctx, target, |
| VBO_VERT_BUFFER_SIZE, |
| NULL, usage, exec->vtx.bufferobj); |
| |
| |
| if (ctx->Driver.MapBufferRange) |
| exec->vtx.buffer_map = |
| (GLfloat *)ctx->Driver.MapBufferRange(ctx, target, |
| 0, VBO_VERT_BUFFER_SIZE, |
| accessRange, |
| exec->vtx.bufferobj); |
| if (!exec->vtx.buffer_map) |
| exec->vtx.buffer_map = |
| (GLfloat *)ctx->Driver.MapBuffer(ctx, target, access, exec->vtx.bufferobj); |
| assert(exec->vtx.buffer_map); |
| exec->vtx.buffer_ptr = exec->vtx.buffer_map; |
| } |
| |
| if (0) |
| printf("map %d..\n", exec->vtx.buffer_used); |
| } |
| |
| |
| |
| /** |
| * Execute the buffer and save copied verts. |
| * \param keep_unmapped if true, leave the VBO unmapped when we're done. |
| */ |
| void |
| vbo_exec_vtx_flush(struct vbo_exec_context *exec, GLboolean keepUnmapped) |
| { |
| 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) { |
| struct gl_context *ctx = exec->ctx; |
| |
| /* Before the update_state() as this may raise _NEW_ARRAY |
| * from _mesa_set_varying_vp_inputs(). |
| */ |
| vbo_exec_bind_arrays( ctx ); |
| |
| if (ctx->NewState) |
| _mesa_update_state( ctx ); |
| |
| if (_mesa_is_bufferobj(exec->vtx.bufferobj)) { |
| vbo_exec_vtx_unmap( exec ); |
| } |
| |
| if (0) |
| printf("%s %d %d\n", __FUNCTION__, exec->vtx.prim_count, |
| exec->vtx.vert_count); |
| |
| vbo_context(ctx)->draw_prims( ctx, |
| exec->vtx.inputs, |
| exec->vtx.prim, |
| exec->vtx.prim_count, |
| NULL, |
| GL_TRUE, |
| 0, |
| exec->vtx.vert_count - 1); |
| |
| /* If using a real VBO, get new storage -- unless asked not to. |
| */ |
| if (_mesa_is_bufferobj(exec->vtx.bufferobj) && !keepUnmapped) { |
| vbo_exec_vtx_map( exec ); |
| } |
| } |
| } |
| |
| /* May have to unmap explicitly if we didn't draw: |
| */ |
| if (keepUnmapped && |
| _mesa_is_bufferobj(exec->vtx.bufferobj) && |
| exec->vtx.buffer_map) { |
| vbo_exec_vtx_unmap( exec ); |
| } |
| |
| if (keepUnmapped || exec->vtx.vertex_size == 0) |
| exec->vtx.max_vert = 0; |
| else |
| exec->vtx.max_vert = ((VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) / |
| (exec->vtx.vertex_size * sizeof(GLfloat))); |
| |
| exec->vtx.buffer_ptr = exec->vtx.buffer_map; |
| exec->vtx.prim_count = 0; |
| exec->vtx.vert_count = 0; |
| } |
| |
| |
| #endif /* FEATURE_beginend */ |