169 lines
4.1 KiB
NASM
169 lines
4.1 KiB
NASM
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align 4
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proc glRenderMode uses ebx ecx, mode:dword
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call gl_get_context
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xor ebx,ebx
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cmp dword[eax+GLContext.render_mode],GL_RENDER
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je .e_sw_1
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cmp dword[eax+GLContext.render_mode],GL_SELECT
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jne .def_1
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cmp dword[eax+GLContext.select_overflow],0
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je @f
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sub ebx,[eax+GLContext.select_hits]
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jmp .else_e
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@@:
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mov ebx,[eax+GLContext.select_hits]
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.else_e:
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mov dword[eax+GLContext.select_overflow],0
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mov ecx,[eax+GLContext.select_buffer]
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mov dword[eax+GLContext.select_ptr],ecx
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mov dword[eax+GLContext.name_stack_size],0
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jmp .e_sw_1
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.def_1:
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; assert(0);
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.e_sw_1:
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cmp dword[mode],GL_RENDER
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jne @f
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mov dword[eax+GLContext.render_mode],GL_RENDER
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jmp .e_sw_2
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@@:
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cmp dword[mode],GL_SELECT
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jne .def_2
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mov dword[eax+GLContext.render_mode],GL_SELECT
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; assert( c->select_buffer != NULL);
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mov ecx,[eax+GLContext.select_buffer]
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mov dword[eax+GLContext.select_ptr],ecx
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mov dword[eax+GLContext.select_hits],0
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mov dword[eax+GLContext.select_overflow],0
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mov dword[eax+GLContext.select_hit],0 ;NULL
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jmp .e_sw_2
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.def_2:
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; assert(0);
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.e_sw_2:
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mov eax,ebx
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ret
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endp
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align 4
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proc glSelectBuffer uses eax ebx, size:dword, buf:dword
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call gl_get_context
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; assert(c->render_mode != GL_SELECT);
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mov ebx,[buf]
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mov dword[eax+GLContext.select_buffer],ebx
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mov ebx,[size]
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mov dword[eax+GLContext.select_size],ebx
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ret
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endp
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align 4
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proc glopInitNames uses eax, context:dword, p:dword
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mov eax,[context]
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cmp dword[eax+GLContext.render_mode],GL_SELECT
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jne @f
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mov dword[eax+GLContext.name_stack_size],0
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mov dword[eax+GLContext.select_hit],0 ;=NULL
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@@:
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ret
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endp
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align 4
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proc glopPushName uses eax ebx, context:dword, p:dword
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mov eax,[context]
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cmp dword[eax+GLContext.render_mode],GL_SELECT
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jne @f
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; assert(c->name_stack_size<MAX_NAME_STACK_DEPTH);
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mov dword[eax+GLContext.select_hit],0 ;=NULL
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inc dword[eax+GLContext.name_stack_size]
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mov ebx,dword[eax+GLContext.name_stack_size]
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shl ebx,2
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add ebx,eax
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mov eax,[p]
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mov eax,[eax+4]
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mov dword[ebx+GLContext.name_stack],eax ;context.name_stack[context.name_stack_size++]=p[1]
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@@:
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ret
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endp
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align 4
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proc glopPopName uses eax, context:dword, p:dword
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mov eax,[context]
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cmp dword[eax+GLContext.render_mode],GL_SELECT
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jne @f
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; assert(c->name_stack_size>0);
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dec dword[eax+GLContext.name_stack_size]
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mov dword[eax+GLContext.select_hit],0 ;=NULL
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@@:
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ret
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endp
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align 4
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proc glopLoadName uses eax ebx, context:dword, p:dword
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mov eax,[context]
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cmp dword[eax+GLContext.render_mode],GL_SELECT
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jne @f
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; assert(c->name_stack_size>0);
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mov dword[eax+GLContext.select_hit],0 ;=NULL
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mov ebx,dword[eax+GLContext.name_stack_size]
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dec ebx
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shl ebx,2
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add ebx,eax
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mov eax,[p]
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mov eax,[eax+4]
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mov dword[ebx+GLContext.name_stack],eax ;context.name_stack[context.name_stack_size-1]=p[1]
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@@:
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ret
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endp
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align 4
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proc gl_add_select uses eax ebx ecx edx, context:dword, zmin:dword, zmax:dword
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; unsigned int *ptr;
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; int i;
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mov eax,[context]
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cmp dword[eax+GLContext.select_overflow],0
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jne .end_f ;if (!context.select_overflow)
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cmp dword[eax+GLContext.select_hit],0 ;if (context.select_hit==NULL)
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jne .els_0
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mov ecx,[eax+GLContext.name_stack_size]
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mov ebx,[eax+GLContext.select_ptr]
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sub ebx,[eax+GLContext.select_buffer]
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sub ebx,3
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sub ebx,ecx
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cmp ebx,[eax+GLContext.select_size]
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jle .els_1
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mov dword[eax+GLContext.select_overflow],1
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jmp .end_f
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.els_1:
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mov ebx,[eax+GLContext.select_ptr]
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mov [eax+GLContext.select_hit],ebx
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mov edx,[eax+GLContext.name_stack_size]
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mov [ebx],edx
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add ebx,4
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mov edx,[zmin]
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mov [ebx],edx
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add ebx,4
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mov edx,[zmax]
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mov [ebx],edx
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add ebx,4
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; for(i=0;i<ecx;i++) *ptr++=c->name_stack[i];
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mov [eax+GLContext.select_ptr],ebx
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inc dword[eax+GLContext.select_hits]
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jmp .end_f
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.els_0:
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mov ebx,[zmin]
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cmp dword[eax+GLContext.select_hit+4],ebx
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jle @f
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mov dword[eax+GLContext.select_hit+4],ebx
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@@:
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mov ebx,[zmax]
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cmp dword[eax+GLContext.select_hit+8],ebx
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jge .end_f
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mov dword[eax+GLContext.select_hit+8],ebx
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.end_f:
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ret
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endp
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