diff options
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_state_fs.c')
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_state_fs.c | 170 |
1 files changed, 148 insertions, 22 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_state_fs.c b/src/gallium/drivers/llvmpipe/lp_state_fs.c index b73ca2d41e..3a669ba859 100644 --- a/src/gallium/drivers/llvmpipe/lp_state_fs.c +++ b/src/gallium/drivers/llvmpipe/lp_state_fs.c @@ -84,8 +84,8 @@ #include "lp_screen.h" #include "lp_context.h" #include "lp_buffer.h" +#include "lp_setup.h" #include "lp_state.h" -#include "lp_quad.h" #include "lp_tex_sample.h" #include "lp_debug.h" @@ -187,7 +187,93 @@ generate_depth(LLVMBuilderRef builder, /** + * Generate the code to do inside/outside triangle testing for the + * four pixels in a 2x2 quad. This will set the four elements of the + * quad mask vector to 0 or ~0. + * \param i which quad of the quad group to test, in [0,3] + */ +static void +generate_tri_edge_mask(LLVMBuilderRef builder, + unsigned i, + LLVMValueRef *mask, /* ivec4, out */ + LLVMValueRef c0, /* int32 */ + LLVMValueRef c1, /* int32 */ + LLVMValueRef c2, /* int32 */ + LLVMValueRef step0_ptr, /* ivec4 */ + LLVMValueRef step1_ptr, /* ivec4 */ + LLVMValueRef step2_ptr) /* ivec4 */ +{ + /* + c0_vec = splat(c0) + c1_vec = splat(c1) + c2_vec = splat(c2) + m0_vec = step0_ptr[i] > c0_vec + m1_vec = step1_ptr[i] > c1_vec + m2_vec = step2_ptr[i] > c2_vec + mask = m0_vec & m1_vec & m2_vec + */ + struct lp_type i32_type; + LLVMTypeRef i32vec4_type; + + LLVMValueRef index; + LLVMValueRef c0_vec, c1_vec, c2_vec; + LLVMValueRef step0_vec, step1_vec, step2_vec; + LLVMValueRef m0_vec, m1_vec, m2_vec; + LLVMValueRef m; + + assert(i < 4); + + /* int32 vector type */ + memset(&i32_type, 0, sizeof i32_type); + i32_type.floating = FALSE; /* values are integers */ + i32_type.sign = TRUE; /* values are signed */ + i32_type.norm = FALSE; /* values are not normalized */ + i32_type.width = 32; /* 32-bit int values */ + i32_type.length = 4; /* 4 elements per vector */ + + i32vec4_type = lp_build_int32_vec4_type(); + + /* c0_vec = {c0, c0, c0, c0} + * Note that we emit this code four times but LLVM optimizes away + * three instances of it. + */ + c0_vec = lp_build_broadcast(builder, i32vec4_type, c0); + c1_vec = lp_build_broadcast(builder, i32vec4_type, c1); + c2_vec = lp_build_broadcast(builder, i32vec4_type, c2); + + lp_build_name(c0_vec, "edgeconst0vec"); + lp_build_name(c1_vec, "edgeconst1vec"); + lp_build_name(c2_vec, "edgeconst2vec"); + + index = LLVMConstInt(LLVMInt32Type(), i, 0); + step0_vec = LLVMBuildLoad(builder, LLVMBuildGEP(builder, step0_ptr, &index, 1, ""), ""); + step1_vec = LLVMBuildLoad(builder, LLVMBuildGEP(builder, step1_ptr, &index, 1, ""), ""); + step2_vec = LLVMBuildLoad(builder, LLVMBuildGEP(builder, step2_ptr, &index, 1, ""), ""); + + lp_build_name(step0_vec, "step0vec"); + lp_build_name(step1_vec, "step1vec"); + lp_build_name(step2_vec, "step2vec"); + + m0_vec = lp_build_compare(builder, i32_type, PIPE_FUNC_GREATER, step0_vec, c0_vec); + m1_vec = lp_build_compare(builder, i32_type, PIPE_FUNC_GREATER, step1_vec, c1_vec); + m2_vec = lp_build_compare(builder, i32_type, PIPE_FUNC_GREATER, step2_vec, c2_vec); + + m = LLVMBuildAnd(builder, m0_vec, m1_vec, ""); + m = LLVMBuildAnd(builder, m, m2_vec, ""); + + lp_build_name(m, "inoutmaskvec"); + + *mask = m; + + /* + * if mask = {0,0,0,0} skip quad + */ +} + + +/** * Generate the fragment shader, depth/stencil test, and alpha tests. + * \param i which quad in the tile, in range [0,3] */ static void generate_fs(struct llvmpipe_context *lp, @@ -201,7 +287,13 @@ generate_fs(struct llvmpipe_context *lp, struct lp_build_sampler_soa *sampler, LLVMValueRef *pmask, LLVMValueRef *color, - LLVMValueRef depth_ptr) + LLVMValueRef depth_ptr, + LLVMValueRef c0, + LLVMValueRef c1, + LLVMValueRef c2, + LLVMValueRef step0_ptr, + LLVMValueRef step1_ptr, + LLVMValueRef step2_ptr) { const struct tgsi_token *tokens = shader->base.tokens; LLVMTypeRef elem_type; @@ -216,6 +308,8 @@ generate_fs(struct llvmpipe_context *lp, unsigned attrib; unsigned chan; + assert(i < 4); + elem_type = lp_build_elem_type(type); vec_type = lp_build_vec_type(type); int_vec_type = lp_build_int_vec_type(type); @@ -235,8 +329,14 @@ generate_fs(struct llvmpipe_context *lp, } lp_build_flow_scope_declare(flow, &z); + /* do triangle edge testing */ + generate_tri_edge_mask(builder, i, pmask, + c0, c1, c2, step0_ptr, step1_ptr, step2_ptr); + + /* 'mask' will control execution based on quad's pixel alive/killed state */ lp_build_mask_begin(&mask, flow, type, *pmask); + early_depth_test = key->depth.enabled && !key->alpha.enabled && @@ -369,6 +469,9 @@ generate_blend(const struct pipe_blend_state *blend, /** * Generate the runtime callable function for the whole fragment pipeline. + * Note that the function which we generate operates on a block of 16 + * pixels at at time. The block contains 2x2 quads. Each quad contains + * 2x2 pixels. */ static struct lp_fragment_shader_variant * generate_fragment(struct llvmpipe_context *lp, @@ -384,17 +487,18 @@ generate_fragment(struct llvmpipe_context *lp, LLVMTypeRef fs_int_vec_type; LLVMTypeRef blend_vec_type; LLVMTypeRef blend_int_vec_type; - LLVMTypeRef arg_types[9]; + LLVMTypeRef arg_types[14]; LLVMTypeRef func_type; + LLVMTypeRef int32_vec4_type = lp_build_int32_vec4_type(); LLVMValueRef context_ptr; LLVMValueRef x; LLVMValueRef y; LLVMValueRef a0_ptr; LLVMValueRef dadx_ptr; LLVMValueRef dady_ptr; - LLVMValueRef mask_ptr; LLVMValueRef color_ptr; LLVMValueRef depth_ptr; + LLVMValueRef c0, c1, c2, step0_ptr, step1_ptr, step2_ptr; LLVMBasicBlockRef block; LLVMBuilderRef builder; LLVMValueRef x0; @@ -476,8 +580,8 @@ generate_fragment(struct llvmpipe_context *lp, fs_type.sign = TRUE; /* values are signed */ fs_type.norm = FALSE; /* values are not limited to [0,1] or [-1,1] */ fs_type.width = 32; /* 32-bit float */ - fs_type.length = 4; /* 4 element per vector */ - num_fs = 4; + fs_type.length = 4; /* 4 elements per vector */ + num_fs = 4; /* number of quads per block */ memset(&blend_type, 0, sizeof blend_type); blend_type.floating = FALSE; /* values are integers */ @@ -504,9 +608,17 @@ generate_fragment(struct llvmpipe_context *lp, arg_types[3] = LLVMPointerType(fs_elem_type, 0); /* a0 */ arg_types[4] = LLVMPointerType(fs_elem_type, 0); /* dadx */ arg_types[5] = LLVMPointerType(fs_elem_type, 0); /* dady */ - arg_types[6] = LLVMPointerType(fs_int_vec_type, 0); /* mask */ - arg_types[7] = LLVMPointerType(blend_vec_type, 0); /* color */ - arg_types[8] = LLVMPointerType(fs_int_vec_type, 0); /* depth */ + arg_types[6] = LLVMPointerType(blend_vec_type, 0); /* color */ + arg_types[7] = LLVMPointerType(fs_int_vec_type, 0); /* depth */ + arg_types[8] = LLVMInt32Type(); /* c0 */ + arg_types[9] = LLVMInt32Type(); /* c1 */ + arg_types[10] = LLVMInt32Type(); /* c2 */ + /* Note: the step arrays are built as int32[16] but we interpret + * them here as int32_vec4[4]. + */ + arg_types[11] = LLVMPointerType(int32_vec4_type, 0);/* step0 */ + arg_types[12] = LLVMPointerType(int32_vec4_type, 0);/* step1 */ + arg_types[13] = LLVMPointerType(int32_vec4_type, 0);/* step2 */ func_type = LLVMFunctionType(LLVMVoidType(), arg_types, Elements(arg_types), 0); @@ -522,9 +634,14 @@ generate_fragment(struct llvmpipe_context *lp, a0_ptr = LLVMGetParam(variant->function, 3); dadx_ptr = LLVMGetParam(variant->function, 4); dady_ptr = LLVMGetParam(variant->function, 5); - mask_ptr = LLVMGetParam(variant->function, 6); - color_ptr = LLVMGetParam(variant->function, 7); - depth_ptr = LLVMGetParam(variant->function, 8); + color_ptr = LLVMGetParam(variant->function, 6); + depth_ptr = LLVMGetParam(variant->function, 7); + c0 = LLVMGetParam(variant->function, 8); + c1 = LLVMGetParam(variant->function, 9); + c2 = LLVMGetParam(variant->function, 10); + step0_ptr = LLVMGetParam(variant->function, 11); + step1_ptr = LLVMGetParam(variant->function, 12); + step2_ptr = LLVMGetParam(variant->function, 13); lp_build_name(context_ptr, "context"); lp_build_name(x, "x"); @@ -532,9 +649,14 @@ generate_fragment(struct llvmpipe_context *lp, lp_build_name(a0_ptr, "a0"); lp_build_name(dadx_ptr, "dadx"); lp_build_name(dady_ptr, "dady"); - lp_build_name(mask_ptr, "mask"); lp_build_name(color_ptr, "color"); lp_build_name(depth_ptr, "depth"); + lp_build_name(c0, "c0"); + lp_build_name(c1, "c1"); + lp_build_name(c2, "c2"); + lp_build_name(step0_ptr, "step0"); + lp_build_name(step1_ptr, "step1"); + lp_build_name(step2_ptr, "step2"); /* * Function body @@ -548,20 +670,20 @@ generate_fragment(struct llvmpipe_context *lp, lp_build_interp_soa_init(&interp, shader->base.tokens, builder, fs_type, a0_ptr, dadx_ptr, dady_ptr, - x0, y0, 2, 0); + x0, y0); /* code generated texture sampling */ sampler = lp_llvm_sampler_soa_create(key->sampler, context_ptr); + /* loop over quads in the block */ for(i = 0; i < num_fs; ++i) { LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0); LLVMValueRef out_color[NUM_CHANNELS]; LLVMValueRef depth_ptr_i; if(i != 0) - lp_build_interp_soa_update(&interp); + lp_build_interp_soa_update(&interp, i); - fs_mask[i] = LLVMBuildLoad(builder, LLVMBuildGEP(builder, mask_ptr, &index, 1, ""), ""); depth_ptr_i = LLVMBuildGEP(builder, depth_ptr, &index, 1, ""); generate_fs(lp, shader, key, @@ -571,9 +693,11 @@ generate_fragment(struct llvmpipe_context *lp, i, &interp, sampler, - &fs_mask[i], + &fs_mask[i], /* output */ out_color, - depth_ptr_i); + depth_ptr_i, + c0, c1, c2, + step0_ptr, step1_ptr, step2_ptr); for(chan = 0; chan < NUM_CHANNELS; ++chan) fs_out_color[chan][i] = out_color[chan]; @@ -724,15 +848,14 @@ llvmpipe_set_constant_buffer(struct pipe_context *pipe, assert(shader < PIPE_SHADER_TYPES); assert(index == 0); + if(llvmpipe->constants[shader].buffer == buffer) + return; + draw_flush(llvmpipe->draw); /* note: reference counting */ pipe_buffer_reference(&llvmpipe->constants[shader].buffer, buffer); - if(shader == PIPE_SHADER_FRAGMENT) { - llvmpipe->jit_context.constants = data; - } - if(shader == PIPE_SHADER_VERTEX) { draw_set_mapped_constant_buffer(llvmpipe->draw, PIPE_SHADER_VERTEX, data, size); @@ -814,4 +937,7 @@ llvmpipe_update_fs(struct llvmpipe_context *lp) variant = generate_fragment(lp, shader, &key); shader->current = variant; + + lp_setup_set_fs_function(lp->setup, + shader->current->jit_function); } |