diff options
author | Brian Paul <brianp@vmware.com> | 2009-02-09 09:22:22 -0700 |
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committer | Brian Paul <brianp@vmware.com> | 2009-02-09 09:22:22 -0700 |
commit | e97681c7f551a2a2a6bd5eff0f4192a870c816c0 (patch) | |
tree | dff2bf0e6d22efb92af131f64be0621ed316977c /src/gallium/drivers/softpipe/sp_quad_alpha_test.c | |
parent | 1a46c8a062aea59de5cf55881104489db5d609e5 (diff) | |
parent | b907d4cd8fafe719b4f87d877562829548937485 (diff) |
mesa: merge gallium-0.2 into gallium-master-merge
Merge commit 'origin/gallium-0.2' into gallium-master-merge
Conflicts:
Makefile
docs/relnotes-7.4.html
docs/relnotes.html
src/mesa/drivers/dri/i965/brw_wm.h
src/mesa/main/imports.c
src/mesa/main/mtypes.h
src/mesa/main/texcompress.c
src/mesa/main/texenvprogram.c
src/mesa/main/version.h
src/mesa/vbo/vbo_exec_api.c
src/mesa/vbo/vbo_save_draw.c
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_quad_alpha_test.c')
-rw-r--r-- | src/gallium/drivers/softpipe/sp_quad_alpha_test.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_quad_alpha_test.c b/src/gallium/drivers/softpipe/sp_quad_alpha_test.c new file mode 100644 index 0000000000..85c9f037a3 --- /dev/null +++ b/src/gallium/drivers/softpipe/sp_quad_alpha_test.c @@ -0,0 +1,108 @@ + +/** + * quad alpha test + */ + +#include "sp_context.h" +#include "sp_headers.h" +#include "sp_quad.h" +#include "pipe/p_defines.h" +#include "util/u_memory.h" + + +static void +alpha_test_quad(struct quad_stage *qs, struct quad_header *quad) +{ + struct softpipe_context *softpipe = qs->softpipe; + const float ref = softpipe->depth_stencil->alpha.ref_value; + unsigned passMask = 0x0, j; + const uint cbuf = 0; /* only output[0].alpha is tested */ + const float *aaaa = quad->output.color[cbuf][3]; + + switch (softpipe->depth_stencil->alpha.func) { + case PIPE_FUNC_NEVER: + break; + case PIPE_FUNC_LESS: + /* + * If mask were an array [4] we could do this SIMD-style: + * passMask = (quad->outputs.color[0][3] <= vec4(ref)); + */ + for (j = 0; j < QUAD_SIZE; j++) { + if (aaaa[j] < ref) { + passMask |= (1 << j); + } + } + break; + case PIPE_FUNC_EQUAL: + for (j = 0; j < QUAD_SIZE; j++) { + if (aaaa[j] == ref) { + passMask |= (1 << j); + } + } + break; + case PIPE_FUNC_LEQUAL: + for (j = 0; j < QUAD_SIZE; j++) { + if (aaaa[j] <= ref) { + passMask |= (1 << j); + } + } + break; + case PIPE_FUNC_GREATER: + for (j = 0; j < QUAD_SIZE; j++) { + if (aaaa[j] > ref) { + passMask |= (1 << j); + } + } + break; + case PIPE_FUNC_NOTEQUAL: + for (j = 0; j < QUAD_SIZE; j++) { + if (aaaa[j] != ref) { + passMask |= (1 << j); + } + } + break; + case PIPE_FUNC_GEQUAL: + for (j = 0; j < QUAD_SIZE; j++) { + if (aaaa[j] >= ref) { + passMask |= (1 << j); + } + } + break; + case PIPE_FUNC_ALWAYS: + passMask = MASK_ALL; + break; + default: + assert(0); + } + + quad->inout.mask &= passMask; + + if (quad->inout.mask) + qs->next->run(qs->next, quad); +} + + +static void alpha_test_begin(struct quad_stage *qs) +{ + qs->next->begin(qs->next); +} + + +static void alpha_test_destroy(struct quad_stage *qs) +{ + FREE( qs ); +} + + +struct quad_stage * +sp_quad_alpha_test_stage( struct softpipe_context *softpipe ) +{ + struct quad_stage *stage = CALLOC_STRUCT(quad_stage); + + stage->softpipe = softpipe; + stage->begin = alpha_test_begin; + stage->run = alpha_test_quad; + stage->destroy = alpha_test_destroy; + + return stage; +} |