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Catch and shortcircuit no-primitive and no-vertex cases in _tnl_wrap_buffers()

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This commit is contained in:
Keith Whitwell 2004-01-27 18:44:50 +00:00
parent da2be88f18
commit dd9e6e7e37
1 changed files with 38 additions and 21 deletions
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59
src/mesa/tnl/t_vtx_api.c
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@ -52,32 +52,47 @@ static void init_attrfv( TNLcontext *tnl );
static void _tnl_wrap_buffers( GLcontext *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
GLuint last_prim = tnl->vtx.prim[tnl->vtx.prim_count-1].mode;
GLuint last_count = tnl->vtx.prim[tnl->vtx.prim_count-1].count;
if (ctx->Driver.CurrentExecPrimitive != GL_POLYGON+1) {
GLint i = tnl->vtx.prim_count - 1;
assert(i >= 0);
tnl->vtx.prim[i].count = ((tnl->vtx.initial_counter - tnl->vtx.counter) -
tnl->vtx.prim[i].start);
if (tnl->vtx.prim_count == 0) {
tnl->vtx.copied.nr = 0;
tnl->vtx.counter = tnl->vtx.initial_counter;
tnl->vtx.vbptr = tnl->vtx.buffer;
}
else {
GLuint last_prim = tnl->vtx.prim[tnl->vtx.prim_count-1].mode;
GLuint last_count = tnl->vtx.prim[tnl->vtx.prim_count-1].count;
/* Execute the buffer and save copied vertices.
*/
_tnl_flush_vtx( ctx );
if (ctx->Driver.CurrentExecPrimitive != GL_POLYGON+1) {
GLint i = tnl->vtx.prim_count - 1;
assert(i >= 0);
tnl->vtx.prim[i].count = ((tnl->vtx.initial_counter -
tnl->vtx.counter) -
tnl->vtx.prim[i].start);
}
/* Emit a glBegin to start the new list.
*/
assert(tnl->vtx.prim_count == 0);
/* Execute the buffer and save copied vertices.
*/
if (tnl->vtx.counter != tnl->vtx.initial_counter)
_tnl_flush_vtx( ctx );
else {
tnl->vtx.prim_count = 0;
tnl->vtx.copied.nr = 0;
}
if (ctx->Driver.CurrentExecPrimitive != GL_POLYGON+1) {
tnl->vtx.prim[0].mode = ctx->Driver.CurrentExecPrimitive;
tnl->vtx.prim[0].start = 0;
tnl->vtx.prim[0].count = 0;
tnl->vtx.prim_count++;
/* Emit a glBegin to start the new list.
*/
assert(tnl->vtx.prim_count == 0);
if (ctx->Driver.CurrentExecPrimitive != GL_POLYGON+1) {
tnl->vtx.prim[0].mode = ctx->Driver.CurrentExecPrimitive;
tnl->vtx.prim[0].start = 0;
tnl->vtx.prim[0].count = 0;
tnl->vtx.prim_count++;
if (tnl->vtx.copied.nr == last_count)
tnl->vtx.prim[0].mode |= last_prim & PRIM_BEGIN;
if (tnl->vtx.copied.nr == last_count)
tnl->vtx.prim[0].mode |= last_prim & PRIM_BEGIN;
}
}
}
@ -98,7 +113,8 @@ static void _tnl_wrap_filled_vertex( GLcontext *ctx )
assert(tnl->vtx.counter > tnl->vtx.copied.nr);
for (i = 0 ; i < tnl->vtx.copied.nr ; i++) {
_mesa_memcpy( tnl->vtx.vbptr, data, tnl->vtx.vertex_size * sizeof(GLfloat));
_mesa_memcpy( tnl->vtx.vbptr, data,
tnl->vtx.vertex_size * sizeof(GLfloat));
tnl->vtx.vbptr += tnl->vtx.vertex_size;
data += tnl->vtx.vertex_size;
tnl->vtx.counter--;
@ -191,6 +207,7 @@ static void _tnl_wrap_upgrade_vertex( GLcontext *ctx,
*/
_tnl_wrap_buffers( ctx );
/* Do a COPY_TO_CURRENT to ensure back-copying works for the case
* when the attribute already exists in the vertex and is having
* its size increased.