From 2f37387786f1d0d6beded5afc29d36f744f1c948 Mon Sep 17 00:00:00 2001 From: Corbin Simpson Date: Thu, 22 Jan 2009 21:47:05 -0800 Subject: r300: Add texture sampler state. Easy compared to the actual texture handling code. --- src/gallium/drivers/r300/r300_context.h | 3 + src/gallium/drivers/r300/r300_state.c | 113 ++++++++++++++++++++++++++++++-- 2 files changed, 111 insertions(+), 5 deletions(-) (limited to 'src') diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h index 3877c9855d6..3cb5df4e20e 100644 --- a/src/gallium/drivers/r300/r300_context.h +++ b/src/gallium/drivers/r300/r300_context.h @@ -66,6 +66,9 @@ struct r300_rs_state { }; struct r300_sampler_state { + uint32_t filter0; /* R300_TX_FILTER0: 0x4400 */ + uint32_t filter1; /* R300_TX_FILTER1: 0x4440 */ + uint32_t border_color; /* R300_TX_BORDER_COLOR: 0x45c0 */ }; struct r300_scissor_state { diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index 7fb0fc2eba8..8e15a429fbe 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -21,6 +21,7 @@ * USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "util/u_math.h" +#include "util/u_pack_color.h" #include "r300_context.h" #include "r300_reg.h" @@ -457,11 +458,113 @@ static void r300_delete_rs_state(struct pipe_context* pipe, void* state) FREE(state); } +static uint32_t translate_wrap(int wrap) { + switch (wrap) { + case PIPE_TEX_WRAP_REPEAT: + return R300_TX_REPEAT; + case PIPE_TEX_WRAP_CLAMP: + return R300_TX_CLAMP; + case PIPE_TEX_WRAP_CLAMP_TO_EDGE: + return R300_TX_CLAMP_TO_EDGE; + case PIPE_TEX_WRAP_CLAMP_TO_BORDER: + return R300_TX_CLAMP_TO_BORDER; + case PIPE_TEX_WRAP_MIRROR_REPEAT: + return R300_TX_REPEAT | R300_TX_MIRRORED; + case PIPE_TEX_WRAP_MIRROR_CLAMP: + return R300_TX_CLAMP | R300_TX_MIRRORED; + case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE: + return R300_TX_CLAMP_TO_EDGE | R300_TX_MIRRORED; + case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: + return R300_TX_CLAMP_TO_EDGE | R300_TX_MIRRORED; + default: + /* XXX handle this? */ + return 0; + } +} + +static uint32_t translate_tex_filters(int min, int mag, int mip) { + uint32_t retval = 0; + switch (min) { + case PIPE_TEX_FILTER_NEAREST: + retval |= R300_TX_MIN_FILTER_NEAREST; + case PIPE_TEX_FILTER_LINEAR: + retval |= R300_TX_MIN_FILTER_LINEAR; + case PIPE_TEX_FILTER_ANISO: + retval |= R300_TX_MIN_FILTER_ANISO; + default: + /* XXX WTF?! */ + break; + } + switch (mag) { + case PIPE_TEX_FILTER_NEAREST: + retval |= R300_TX_MAG_FILTER_NEAREST; + case PIPE_TEX_FILTER_LINEAR: + retval |= R300_TX_MAG_FILTER_LINEAR; + case PIPE_TEX_FILTER_ANISO: + retval |= R300_TX_MAG_FILTER_ANISO; + default: + /* XXX WTF?! */ + break; + } + switch (mip) { + case PIPE_TEX_MIPFILTER_NONE: + retval |= R300_TX_MIN_FILTER_MIP_NONE; + case PIPE_TEX_MIPFILTER_NEAREST: + retval |= R300_TX_MIN_FILTER_MIP_NEAREST; + case PIPE_TEX_MIPFILTER_LINEAR: + retval |= R300_TX_MIN_FILTER_MIP_LINEAR; + default: + /* XXX WTF?! */ + break; + } + + return retval; +} + +static uint32_t anisotropy(float max_aniso) { + if (max_aniso >= 16.0f) { + return R300_TX_MAX_ANISO_16_TO_1; + } else if (max_aniso >= 8.0f) { + return R300_TX_MAX_ANISO_8_TO_1; + } else if (max_aniso >= 4.0f) { + return R300_TX_MAX_ANISO_4_TO_1; + } else if (max_aniso >= 2.0f) { + return R300_TX_MAX_ANISO_2_TO_1; + } else { + return R300_TX_MAX_ANISO_1_TO_1; + } +} + static void* r300_create_sampler_state(struct pipe_context* pipe, const struct pipe_sampler_state* state) { + struct r300_context* r300 = r300_context(pipe); struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state); + int lod_bias; + + sampler->filter0 |= + (translate_wrap(state->wrap_s) << R300_TX_WRAP_S_SHIFT) | + (translate_wrap(state->wrap_t) << R300_TX_WRAP_T_SHIFT) | + (translate_wrap(state->wrap_r) << R300_TX_WRAP_R_SHIFT); + + sampler->filter0 |= translate_tex_filters(state->min_img_filter, + state->mag_img_filter, + state->min_mip_filter); + + lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1); + + sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT; + + sampler->filter1 |= anisotropy(state->max_anisotropy); + + util_pack_color(state->border_color, PIPE_FORMAT_A8R8G8B8_UNORM, + &sampler->border_color); + + /* R500-specific fixups and optimizations */ + if (r300_screen(r300->context.screen)->caps->is_r500) { + sampler->filter1 |= R500_BORDER_FIX; + } return (void*)sampler; } @@ -471,15 +574,15 @@ static void r300_bind_sampler_states(struct pipe_context* pipe, void** states) { struct r300_context* r300 = r300_context(pipe); - int i = 0; + int i; if (count > 8) { return; } - for (i; i < count; i++) { + for (i = 0; i < count; i++) { if (r300->sampler_states[i] != states[i]) { - r300->sampler_states[i] = states[i]; + r300->sampler_states[i] = (struct r300_sampler_state*)states[i]; r300->dirty_state |= (R300_NEW_SAMPLER << i); } } @@ -510,8 +613,8 @@ static void r300_set_scissor_state(struct pipe_context* pipe, r300->scissor_state->scissor_top_left = (left << R300_SCISSORS_X_SHIFT) | (top << R300_SCISSORS_Y_SHIFT); - r300->scissor_state->scissor_bottom_right = (right << R300_SCISSORS_X_SHIFT) | - (bottom << R300_SCISSORS_Y_SHIFT); + r300->scissor_state->scissor_bottom_right = + (right << R300_SCISSORS_X_SHIFT) | (bottom << R300_SCISSORS_Y_SHIFT); r300->dirty_state |= R300_NEW_SCISSOR; } -- cgit v1.2.3