[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [20758] branches/soc-2009-imbusy: improved buffer allocator, starting to split derived mesh into required buffers
Lukas Steiblys
imbusy at imbusy.org
Tue Jun 9 17:31:17 CEST 2009
Revision: 20758
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=20758
Author: imbusy
Date: 2009-06-09 17:31:17 +0200 (Tue, 09 Jun 2009)
Log Message:
-----------
improved buffer allocator, starting to split derived mesh into required buffers
Modified Paths:
--------------
branches/soc-2009-imbusy/projectfiles_vc9/blender/gpu/BL_gpu.vcproj
branches/soc-2009-imbusy/source/blender/gpu/gpu_buffers.h
branches/soc-2009-imbusy/source/blender/gpu/intern/gpu_buffers.c
Modified: branches/soc-2009-imbusy/projectfiles_vc9/blender/gpu/BL_gpu.vcproj
===================================================================
--- branches/soc-2009-imbusy/projectfiles_vc9/blender/gpu/BL_gpu.vcproj 2009-06-09 14:53:19 UTC (rev 20757)
+++ branches/soc-2009-imbusy/projectfiles_vc9/blender/gpu/BL_gpu.vcproj 2009-06-09 15:31:17 UTC (rev 20758)
@@ -474,7 +474,7 @@
Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
>
<File
- RelativePath=".\gpu_buffers.c"
+ RelativePath="..\..\..\source\blender\gpu\intern\gpu_buffers.c"
>
</File>
<File
@@ -507,7 +507,7 @@
Filter="h;hpp;hxx;hm;inl"
>
<File
- RelativePath=".\gpu_buffers.h"
+ RelativePath="..\..\..\source\blender\gpu\gpu_buffers.h"
>
</File>
<File
Modified: branches/soc-2009-imbusy/source/blender/gpu/gpu_buffers.h
===================================================================
--- branches/soc-2009-imbusy/source/blender/gpu/gpu_buffers.h 2009-06-09 14:53:19 UTC (rev 20757)
+++ branches/soc-2009-imbusy/source/blender/gpu/gpu_buffers.h 2009-06-09 15:31:17 UTC (rev 20758)
@@ -35,6 +35,8 @@
#define MAX_FREE_GPU_BUFFERS 8
+struct DerivedMesh;
+
typedef struct GPUBuffer
{
int size; /* in bytes */
@@ -52,10 +54,38 @@
GPUBuffer* buffers[MAX_FREE_GPU_BUFFERS];
} GPUBufferPool;
+typedef struct GPUBufferMaterial
+{
+ int start; /* at which vertex in the buffer the material starts */
+ int end; /* at which vertex it ends */
+ char mat_nr;
+} GPUBufferMaterial;
+
+typedef struct GPUDrawObject
+{
+ GPUBuffer *vertices;
+ GPUBuffer *normals;
+ GPUBuffer *uv;
+ GPUBuffer *colors;
+
+ GPUBufferMaterial *materials;
+
+ int nmaterials;
+ int nelements;
+} GPUDrawObject;
+
GPUBufferPool *GPU_buffer_pool_new();
void GPU_buffer_pool_free( GPUBufferPool *pool );
GPUBuffer *GPU_buffer_alloc( int size, GPUBufferPool *pool );
void GPU_buffer_free( GPUBuffer *buffer, GPUBufferPool *pool );
+GPUDrawObject *GPU_drawobject_new( struct DerivedMesh *dm );
+void GPU_drawobject_free( GPUDrawObject *object );
+
+GPUBuffer *GPU_buffer_vertex( struct DerivedMesh *dm, GPUDrawObject *object );
+GPUBuffer *GPU_buffer_normal( struct DerivedMesh *dm, GPUDrawObject *object );
+GPUBuffer *GPU_buffer_color( struct DerivedMesh *dm, GPUDrawObject *object );
+GPUBuffer *GPU_buffer_uv( struct DerivedMesh *dm, GPUDrawObject *object );
+
#endif
Modified: branches/soc-2009-imbusy/source/blender/gpu/intern/gpu_buffers.c
===================================================================
--- branches/soc-2009-imbusy/source/blender/gpu/intern/gpu_buffers.c 2009-06-09 14:53:19 UTC (rev 20757)
+++ branches/soc-2009-imbusy/source/blender/gpu/intern/gpu_buffers.c 2009-06-09 15:31:17 UTC (rev 20758)
@@ -30,13 +30,18 @@
* ***** END GPL LICENSE BLOCK *****
*/
+#include <string.h>
+
#include "GL/glew.h"
#include "gpu_buffers.h"
#include "MEM_guardedalloc.h"
+#include "BKE_DerivedMesh.h"
+#include "DNA_meshdata_types.h"
/* -1 - undefined, 0 - vertex arrays, 1 - VBOs */
int useVBOs = -1;
+GPUBufferPool *globalPool = 0;
GPUBufferPool *GPU_buffer_pool_new()
{
@@ -84,6 +89,25 @@
pool->size--;
}
+void GPU_buffer_pool_delete_last( GPUBufferPool *pool )
+{
+ int last;
+
+ while( pool->start < 0 )
+ pool->start += MAX_FREE_GPU_BUFFERS;
+ last = (pool->start+pool->size)%MAX_FREE_GPU_BUFFERS;
+
+ if( useVBOs ) {
+ glDeleteBuffersARB(1,&pool->buffers[last]->id);
+ MEM_freeN( pool->buffers[last] );
+ }
+ else {
+ MEM_freeN( pool->buffers[last]->pointer );
+ MEM_freeN( pool->buffers[last] );
+ }
+ pool->size--;
+}
+
GPUBuffer *GPU_buffer_alloc( int size, GPUBufferPool *pool )
{
int i;
@@ -117,6 +141,13 @@
}
else {
allocated->pointer = MEM_mallocN(size, "GPU_buffer_alloc_vertexarray");
+ while( allocated->pointer == 0 && pool->size > 0 ) {
+ GPU_buffer_pool_delete_last(pool);
+ allocated->pointer = MEM_mallocN(size, "GPU_buffer_alloc_vertexarray");
+ }
+ if( allocated->pointer == 0 && pool->size == 0 ) {
+ /* report an out of memory error. not sure how to do that */
+ }
}
}
else {
@@ -130,23 +161,144 @@
{
int place;
+ if( buffer == 0 )
+ return;
+
while( pool->start < 0 )
pool->start += MAX_FREE_GPU_BUFFERS;
place = (pool->start-1 + MAX_FREE_GPU_BUFFERS)%MAX_FREE_GPU_BUFFERS;
/* free the last used buffer in the queue if no more space */
if( pool->size == MAX_FREE_GPU_BUFFERS ) {
- if( useVBOs ) {
- glDeleteBuffersARB(1,&pool->buffers[place]->id);
- MEM_freeN( pool->buffers[place] );
+ GPU_buffer_pool_delete_last( pool );
+ }
+
+ pool->start = place;
+ pool->buffers[place] = buffer;
+}
+
+GPUDrawObject *GPU_drawobject_new( DerivedMesh *dm )
+{
+ GPUDrawObject *object;
+ MVert *mvert;
+ MFace *mface;
+ int numverts[256]; /* material number is an 8-bit char so there's at most 256 materials */
+ int i;
+ int curmat, curverts;
+
+ object = MEM_mallocN(sizeof(GPUDrawObject),"GPU_drawobject_new");
+ memset(object,0,sizeof(GPUDrawObject));
+
+ memset(numverts,0,sizeof(int)*256);
+
+ mvert = dm->getVertArray(dm);
+ mface = dm->getFaceArray(dm);
+
+ for( i=0; i < dm->getNumFaces(dm); i++ ) {
+ if( mface[i].v4 )
+ numverts[mface[i].mat_nr] += 6; /* split every quad into two triangles */
+ else
+ numverts[mface[i].mat_nr] += 3;
+ }
+
+ //float *array = MEM_calloc(dm->getNumVerts(dm)*sizeof(float)*3); for(i = 0; i < dm->getNumVerts(dm); i++) { VECCOPY(array[i], mvert[i].co);}
+
+ for( i = 0; i < 256; i++ ) {
+ if( numverts[i] > 0 ) {
+ object->nmaterials++;
+ object->nelements += numverts[i];
}
- else {
- MEM_freeN( pool->buffers[place]->pointer );
- MEM_freeN( pool->buffers[place] );
+ }
+ object->materials = MEM_mallocN(sizeof(GPUBufferMaterial)*object->nmaterials,"GPU_drawobject_new_materials");
+
+ curmat = curverts = 0;
+ for( i = 0; i < 256; i++ ) {
+ if( numverts[i] > 0 ) {
+ object->materials[curmat].mat_nr = i;
+ object->materials[curmat].start = curverts;
+ object->materials[curmat].end = curverts+numverts[i];
+ curverts += numverts[i];
+ curmat++;
}
- pool->size--;
}
- pool->start = place;
- pool->buffers[pool->start] = buffer;
+ return object;
}
+
+void GPU_drawobject_free( GPUDrawObject *object )
+{
+ if( object == 0 )
+ return;
+
+ MEM_freeN(object->materials);
+
+ GPU_buffer_free( object->vertices, globalPool );
+ GPU_buffer_free( object->normals, globalPool );
+ GPU_buffer_free( object->uv, globalPool );
+ GPU_buffer_free( object->colors, globalPool );
+
+ MEM_freeN(object);
+}
+
+GPUBuffer *GPU_buffer_vertex( DerivedMesh *dm, GPUDrawObject *object )
+{
+ GPUBuffer *buffer;
+ MVert *mvert;
+ MFace *mface;
+ float *varray;
+ int start;
+ int redir[256];
+ int *index;
+ int i;
+
+ index = MEM_mallocN(sizeof(int)*object->nmaterials,"GPU_buffer_vertex");
+ for( i = 0; i < object->nmaterials; i++ )
+ {
+ index[i] = object->materials[i].start;
+ redir[object->materials[i].mat_nr] = i;
+ }
+ mvert = dm->getVertArray(dm);
+ mface = dm->getFaceArray(dm);
+
+ buffer = GPU_buffer_alloc(sizeof(float)*3*object->nelements,globalPool);
+
+ if( useVBOs ) {
+ printf("GPU_buffer_vertex VBO not implemented yet");
+ }
+ else {
+ varray = buffer->pointer;
+ for( i=0; i < dm->getNumFaces(dm); i++ ) {
+ start = index[redir[mface[i].mat_nr]];
+ if( mface[i].v4 )
+ index[redir[mface[i].mat_nr]] += 18;
+ else
+ index[redir[mface[i].mat_nr]] += 9;
+
+ varray[start] = mvert[mface[i].v1].co[0];
+ varray[start+1] = mvert[mface[i].v1].co[1];
+ varray[start+2] = mvert[mface[i].v1].co[2];
+ varray[start+3] = mvert[mface[i].v2].co[0];
+ varray[start+4] = mvert[mface[i].v2].co[1];
+ varray[start+5] = mvert[mface[i].v2].co[2];
+ varray[start+6] = mvert[mface[i].v3].co[0];
+ varray[start+7] = mvert[mface[i].v3].co[1];
+ varray[start+8] = mvert[mface[i].v3].co[2];
+
+ if( mface[i].v4 ) {
+ varray[start+9] = mvert[mface[i].v3].co[0];
+ varray[start+10] = mvert[mface[i].v3].co[1];
+ varray[start+11] = mvert[mface[i].v3].co[2];
+ varray[start+12] = mvert[mface[i].v4].co[0];
+ varray[start+13] = mvert[mface[i].v4].co[1];
+ varray[start+14] = mvert[mface[i].v4].co[2];
+ varray[start+15] = mvert[mface[i].v1].co[0];
+ varray[start+16] = mvert[mface[i].v1].co[1];
+ varray[start+17] = mvert[mface[i].v1].co[2];
+ }
+ }
+ }
+
+ MEM_freeN(index);
+
+ return buffer;
+}
\ No newline at end of file
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