From 4461442849bfdb817334b38567136f7f9dabdf59 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Thu, 14 Jan 2010 19:15:00 -0700 Subject: llvmpipe: implement scissor testing The scissor test is implemented as another per-quad operation in the JIT code. The four scissor box params are passed via the lp_jit_context. In the JIT code we compare the quad's x/y coords against the clip bounds and create a new in/out mask that's AND'd with the main quad mask. Note: we should also do scissor testing in the triangle setup code to improve efficiency. That's not done yet. --- src/gallium/drivers/llvmpipe/lp_jit.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) (limited to 'src/gallium/drivers/llvmpipe/lp_jit.c') diff --git a/src/gallium/drivers/llvmpipe/lp_jit.c b/src/gallium/drivers/llvmpipe/lp_jit.c index 4ef0783f3e2..429cb973c26 100644 --- a/src/gallium/drivers/llvmpipe/lp_jit.c +++ b/src/gallium/drivers/llvmpipe/lp_jit.c @@ -79,13 +79,16 @@ lp_jit_init_globals(struct llvmpipe_screen *screen) /* struct lp_jit_context */ { - LLVMTypeRef elem_types[4]; + LLVMTypeRef elem_types[8]; LLVMTypeRef context_type; elem_types[0] = LLVMPointerType(LLVMFloatType(), 0); /* constants */ - elem_types[1] = LLVMFloatType(); /* alpha_ref_value */ - elem_types[2] = LLVMPointerType(LLVMInt8Type(), 0); /* blend_color */ - elem_types[3] = LLVMArrayType(texture_type, PIPE_MAX_SAMPLERS); /* textures */ + elem_types[1] = LLVMFloatType(); /* alpha_ref_value */ elem_types[2] = LLVMFloatType(); /* scissor_xmin */ + elem_types[3] = LLVMFloatType(); /* scissor_ymin */ + elem_types[4] = LLVMFloatType(); /* scissor_xmax */ + elem_types[5] = LLVMFloatType(); /* scissor_ymax */ + elem_types[6] = LLVMPointerType(LLVMInt8Type(), 0); /* blend_color */ + elem_types[7] = LLVMArrayType(texture_type, PIPE_MAX_SAMPLERS); /* textures */ context_type = LLVMStructType(elem_types, Elements(elem_types), 0); @@ -93,8 +96,16 @@ lp_jit_init_globals(struct llvmpipe_screen *screen) screen->target, context_type, 0); LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, alpha_ref_value, screen->target, context_type, 1); - LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, blend_color, + LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_xmin, screen->target, context_type, 2); + LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_ymin, + screen->target, context_type, 3); + LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_xmax, + screen->target, context_type, 4); + LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_ymax, + screen->target, context_type, 5); + LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, blend_color, + screen->target, context_type, 6); LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, textures, screen->target, context_type, LP_JIT_CONTEXT_TEXTURES_INDEX); -- cgit v1.2.3