From bbb1c6f6298fcb1125a8170f22646f326b0ca74c Mon Sep 17 00:00:00 2001 From: Corbin Simpson Date: Wed, 14 Jan 2009 04:37:36 -0800 Subject: r300: Add DSA state. That's it for now. Just the "easy" stuff. Todo: - Rasterizer state, which is a lot more than just the RS. - Miscellaneous state which doesn't currently belong to any state object. - Shader assemblers? - Fix dynamic loading bugs. --- src/gallium/drivers/r300/r300_state.c | 162 ++++++++++++++++++++++++++++++++++ 1 file changed, 162 insertions(+) (limited to 'src/gallium/drivers/r300/r300_state.c') diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index 2e19955454..0f0660c403 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -148,6 +148,168 @@ static void r300_delete_blend_state(struct pipe_context* pipe, FREE(state); } +static uint32_t translate_depth_stencil_function(int zs_func) { + switch (zs_func) { + case PIPE_FUNC_NEVER: + return R300_ZS_NEVER; + case PIPE_FUNC_LESS: + return R300_ZS_LESS; + case PIPE_FUNC_EQUAL: + return R300_ZS_EQUAL; + case PIPE_FUNC_LEQUAL: + return R300_ZS_LEQUAL; + case PIPE_FUNC_GREATER: + return R300_ZS_GREATER; + case PIPE_FUNC_NOTEQUAL: + return R300_ZS_NOTEQUAL; + case PIPE_FUNC_GEQUAL: + return R300_ZS_GEQUAL; + case PIPE_FUNC_ALWAYS: + return R300_ZS_ALWAYS; + default: + /* XXX shouldn't be reachable */ + break; + } + return 0; +} + +static uint32_t translate_stencil_op(int s_op) { + switch (s_op) { + case PIPE_STENCIL_OP_KEEP: + return R300_ZS_KEEP; + case PIPE_STENCIL_OP_ZERO: + return R300_ZS_ZERO; + case PIPE_STENCIL_OP_REPLACE: + return R300_ZS_REPLACE; + case PIPE_STENCIL_OP_INCR: + return R300_ZS_INCR; + case PIPE_STENCIL_OP_DECR: + return R300_ZS_DECR; + case PIPE_STENCIL_OP_INCR_WRAP: + return R300_ZS_INCR_WRAP; + case PIPE_STENCIL_OP_DECR_WRAP: + return R300_ZS_DECR_WRAP; + case PIPE_STENCIL_OP_INVERT: + return R300_ZS_INVERT; + default: + /* XXX shouldn't be reachable */ + break; + } + return 0; +} + +static uint32_t translate_alpha_function(int alpha_func) { + switch (alpha_func) { + case PIPE_FUNC_NEVER: + return R300_FG_ALPHA_FUNC_NEVER; + case PIPE_FUNC_LESS: + return R300_FG_ALPHA_FUNC_LESS; + case PIPE_FUNC_EQUAL: + return R300_FG_ALPHA_FUNC_EQUAL; + case PIPE_FUNC_LEQUAL: + return R300_FG_ALPHA_FUNC_LE; + case PIPE_FUNC_GREATER: + return R300_FG_ALPHA_FUNC_GREATER; + case PIPE_FUNC_NOTEQUAL: + return R300_FG_ALPHA_FUNC_NOTEQUAL; + case PIPE_FUNC_GEQUAL: + return R300_FG_ALPHA_FUNC_GE; + case PIPE_FUNC_ALWAYS: + return R300_FG_ALPHA_FUNC_ALWAYS; + default: + /* XXX shouldn't be reachable */ + break; + } + return 0; +} + +/* Create a new depth, stencil, and alpha state based on the CSO dsa state. + * + * This contains the depth buffer, stencil buffer, alpha test, and such. + * On the Radeon, depth and stencil buffer setup are intertwined, which is + * the reason for some of the strange-looking assignments across registers. */ +static void* r300_create_dsa_state(struct pipe_context* pipe, + struct pipe_depth_stencil_alpha_state* state) +{ + struct r300_dsa_state* dsa = CALLOC_STRUCT(r300_dsa_state); + + /* Depth test setup. */ + if (state->depth.enabled) { + dsa->z_buffer_control |= R300_Z_ENABLE; + + if (state->depth.writemask) { + dsa->z_buffer_control |= R300_Z_WRITE_ENABLE; + } + + dsa->z_stencil_control |= + (translate_depth_stencil_function(state->depth.func) << + R300_Z_FUNC_SHIFT); + } + + /* Stencil buffer setup. */ + if (state->stencil[0].enabled) { + dsa->z_buffer_control |= R300_STENCIL_ENABLE; + dsa->z_stencil_control |= + (translate_depth_stencil_function(state->stencil[0].func) << + R300_S_FRONT_FUNC_SHIFT) | + (translate_stencil_op(state->stencil[0].fail_op) << + R300_S_FRONT_SFAIL_OP_SHIFT) | + (translate_stencil_op(state->stencil[0].zpass_op) << + R300_S_FRONT_ZPASS_OP_SHIFT) | + (translate_stencil_op(state->stencil[0].zfail_op) << + R300_S_FRONT_ZFAIL_OP_SHIFT); + + dsa->stencil_ref_mask = (state->stencil[0].ref_value) | + (state->stencil[0].value_mask << R300_STENCILMASK_SHIFT) | + (state->stencil[0].write_mask << R300_STENCILWRITEMASK_SHIFT); + + if (state->stencil[1].enabled) { + dsa->z_buffer_control |= R300_STENCIL_FRONT_BACK; + dsa->z_stencil_control |= + (translate_depth_stencil_function(state->stencil[1].func) << + R300_S_BACK_FUNC_SHIFT) | + (translate_stencil_op(state->stencil[1].fail_op) << + R300_S_BACK_SFAIL_OP_SHIFT) | + (translate_stencil_op(state->stencil[1].zpass_op) << + R300_S_BACK_ZPASS_OP_SHIFT) | + (translate_stencil_op(state->stencil[1].zfail_op) << + R300_S_BACK_ZFAIL_OP_SHIFT); + + dsa->stencil_ref_bf = (state->stencil[1].ref_value) | + (state->stencil[1].value_mask << R300_STENCILMASK_SHIFT) | + (state->stencil[1].write_mask << R300_STENCILWRITEMASK_SHIFT); + } + } + + /* Alpha test setup. */ + if (state->alpha.enabled) { + dsa->alpha_function = translate_alpha_function(state->alpha.func) | + R300_FG_ALPHA_FUNC_ENABLE; + dsa->alpha_reference = CLAMP(state->alpha.ref * 1023.0f, 0, 1023); + } else { + dsa->z_buffer_top = R300_ZTOP_ENABLE; + } + + return (void*)dsa; +} + +/* Bind DSA state. */ +static void r300_bind_dsa_state(struct pipe_context* pipe, + void* state) +{ + struct r300_context* r300 = r300_context(pipe); + + r300->dsa_state = (struct r300_dsa_state*)state; + r300->dirty_state |= R300_NEW_DSA; +} + +/* Free DSA state. */ +static void r300_delete_dsa_state(struct pipe_context* pipe, + void* state) +{ + FREE(state); +} + /* Create a new scissor state based on the CSO scissor state. * * This is only for the fragment scissors. */ -- cgit v1.2.3