From: Marek Olšák Date: Sat, 14 Nov 2009 22:27:20 +0000 (+0100) Subject: r300g: add texture lod clamping X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b7078a88119e248b0196f7446abe029c22f1ee28;p=mesa.git r300g: add texture lod clamping These now work: piglit/lodclamp piglit/levelclamp --- diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h index f954ba7f9aa..60ef415caa9 100644 --- a/src/gallium/drivers/r300/r300_context.h +++ b/src/gallium/drivers/r300/r300_context.h @@ -92,6 +92,10 @@ 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 */ + + /* Min/max LOD must be clamped to [0, last_level], thus + * it's dependent on a currently bound texture */ + unsigned min_lod, max_lod; }; struct r300_scissor_state { diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c index 6d702c00272..ad7dff36bea 100644 --- a/src/gallium/drivers/r300/r300_emit.c +++ b/src/gallium/drivers/r300/r300_emit.c @@ -583,6 +583,8 @@ void r300_emit_texture(struct r300_context* r300, unsigned offset) { uint32_t filter0 = sampler->filter0; + uint32_t format0 = tex->state.format0; + unsigned min_level, max_level; CS_LOCALS(r300); /* to emulate 1D textures through 2D ones correctly */ @@ -591,13 +593,20 @@ void r300_emit_texture(struct r300_context* r300, filter0 |= R300_TX_WRAP_T(R300_TX_CLAMP_TO_EDGE); } + /* determine min/max levels */ + /* the MAX_MIP level is the largest (finest) one */ + max_level = MIN2(sampler->max_lod, tex->tex.last_level); + min_level = MIN2(sampler->min_lod, max_level); + format0 |= R300_TX_NUM_LEVELS(max_level); + filter0 |= R300_TX_MAX_MIP_LEVEL(min_level); + BEGIN_CS(16); OUT_CS_REG(R300_TX_FILTER0_0 + (offset * 4), filter0 | (offset << 28)); OUT_CS_REG(R300_TX_FILTER1_0 + (offset * 4), sampler->filter1); OUT_CS_REG(R300_TX_BORDER_COLOR_0 + (offset * 4), sampler->border_color); - OUT_CS_REG(R300_TX_FORMAT0_0 + (offset * 4), tex->state.format0); + OUT_CS_REG(R300_TX_FORMAT0_0 + (offset * 4), format0); OUT_CS_REG(R300_TX_FORMAT1_0 + (offset * 4), tex->state.format1); OUT_CS_REG(R300_TX_FORMAT2_0 + (offset * 4), tex->state.format2); OUT_CS_REG_SEQ(R300_TX_OFFSET_0 + (offset * 4), 1); diff --git a/src/gallium/drivers/r300/r300_reg.h b/src/gallium/drivers/r300/r300_reg.h index 8ca785cb587..66fdada2210 100644 --- a/src/gallium/drivers/r300/r300_reg.h +++ b/src/gallium/drivers/r300/r300_reg.h @@ -1463,6 +1463,8 @@ USE OR OTHER DEALINGS IN THE SOFTWARE. # define R300_TX_MIN_FILTER_MIP_NEAREST (1 << 13) # define R300_TX_MIN_FILTER_MIP_LINEAR (2 << 13) # define R300_TX_MIN_FILTER_MIP_MASK (3 << 13) +# define R300_TX_MAX_MIP_LEVEL_SHIFT 17 +# define R300_TX_MAX_MIP_LEVEL_MASK (0xf << 17) # define R300_TX_MAX_ANISO_1_TO_1 (0 << 21) # define R300_TX_MAX_ANISO_2_TO_1 (1 << 21) # define R300_TX_MAX_ANISO_4_TO_1 (2 << 21) @@ -1471,6 +1473,7 @@ USE OR OTHER DEALINGS IN THE SOFTWARE. # define R300_TX_MAX_ANISO_MASK (7 << 21) # define R300_TX_WRAP_S(x) ((x) << 0) # define R300_TX_WRAP_T(x) ((x) << 3) +# define R300_TX_MAX_MIP_LEVEL(x) ((x) << 17) #define R300_TX_FILTER1_0 0x4440 # define R300_CHROMA_KEY_MODE_DISABLE 0 @@ -1500,8 +1503,6 @@ USE OR OTHER DEALINGS IN THE SOFTWARE. # define R300_TX_HEIGHTMASK_MASK (2047 << 11) # define R300_TX_DEPTHMASK_SHIFT 22 # define R300_TX_DEPTHMASK_MASK (0xf << 22) -# define R300_TX_MAX_MIP_LEVEL_SHIFT 26 -# define R300_TX_MAX_MIP_LEVEL_MASK (0xf << 26) # define R300_TX_SIZE_PROJECTED (1 << 30) # define R300_TX_PITCH_EN (1 << 31) # define R300_TX_WIDTH(x) ((x) << 0) diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index 5422a2cc9c8..f2867675f0f 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -523,6 +523,11 @@ static void* state->mag_img_filter, state->min_mip_filter); + /* Unfortunately, r300-r500 don't support floating-point mipmap lods. */ + /* We must pass these to the emit function to clamp them properly. */ + sampler->min_lod = MAX2((unsigned)state->min_lod, 0); + sampler->max_lod = MAX2((unsigned)ceilf(state->max_lod), 0); + lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1); sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT; diff --git a/src/gallium/drivers/r300/r300_texture.c b/src/gallium/drivers/r300/r300_texture.c index aea25cf71dd..d13aa8f036b 100644 --- a/src/gallium/drivers/r300/r300_texture.c +++ b/src/gallium/drivers/r300/r300_texture.c @@ -43,8 +43,7 @@ static void r300_setup_texture_state(struct r300_texture* tex, boolean is_r500) state->format2 = (tex->pitch[0] - 1) & 0x1fff; } else { /* power of two textures (3D, mipmaps, and no pitch) */ - state->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth[0]) & 0xf) | - R300_TX_NUM_LEVELS(pt->last_level & 0xf); + state->format0 |= R300_TX_DEPTH(util_logbase2(pt->depth[0]) & 0xf); } state->format1 = r300_translate_texformat(pt->format);