diff options
author | Zack Rusin <[email protected]> | 2007-09-20 12:34:31 -0400 |
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committer | Zack Rusin <[email protected]> | 2007-09-20 12:34:31 -0400 |
commit | 742e32a40bf5ef1bd90b23aa0f7d451b7b7f0ba3 (patch) | |
tree | 5768af08d9a2943a5eed9856dec183f0394774c4 /src/mesa/pipe/i915simple/i915_state.c | |
parent | cc2629f5912d1c608f830ab63f6c4e0875d2fcef (diff) |
Cache the i915 sampler state.
Diffstat (limited to 'src/mesa/pipe/i915simple/i915_state.c')
-rw-r--r-- | src/mesa/pipe/i915simple/i915_state.c | 129 |
1 files changed, 126 insertions, 3 deletions
diff --git a/src/mesa/pipe/i915simple/i915_state.c b/src/mesa/pipe/i915simple/i915_state.c index c7086c17f5a..525f8ce13a2 100644 --- a/src/mesa/pipe/i915simple/i915_state.c +++ b/src/mesa/pipe/i915simple/i915_state.c @@ -38,9 +38,79 @@ #include "i915_state.h" #include "i915_state_inlines.h" -/* None of this state is actually used for anything yet. + +/* The i915 (and related graphics cores) do not support GL_CLAMP. The + * Intel drivers for "other operating systems" implement GL_CLAMP as + * GL_CLAMP_TO_EDGE, so the same is done here. */ +static unsigned +translate_wrap_mode(unsigned wrap) +{ + switch (wrap) { + case PIPE_TEX_WRAP_REPEAT: + return TEXCOORDMODE_WRAP; + case PIPE_TEX_WRAP_CLAMP: + return TEXCOORDMODE_CLAMP_EDGE; /* not quite correct */ + case PIPE_TEX_WRAP_CLAMP_TO_EDGE: + return TEXCOORDMODE_CLAMP_EDGE; + case PIPE_TEX_WRAP_CLAMP_TO_BORDER: + return TEXCOORDMODE_CLAMP_BORDER; +// case PIPE_TEX_WRAP_MIRRORED_REPEAT: +// return TEXCOORDMODE_MIRROR; + default: + return TEXCOORDMODE_WRAP; + } +} +static unsigned translate_img_filter( unsigned filter ) +{ + switch (filter) { + case PIPE_TEX_FILTER_NEAREST: + return FILTER_NEAREST; + case PIPE_TEX_FILTER_LINEAR: + return FILTER_LINEAR; + default: + assert(0); + return FILTER_NEAREST; + } +} + +static unsigned translate_mip_filter( unsigned filter ) +{ + switch (filter) { + case PIPE_TEX_MIPFILTER_NONE: + return MIPFILTER_NONE; + case PIPE_TEX_MIPFILTER_NEAREST: + return MIPFILTER_NEAREST; + case PIPE_TEX_FILTER_LINEAR: + return MIPFILTER_LINEAR; + default: + assert(0); + return MIPFILTER_NONE; + } +} + +static unsigned translate_compare_func(unsigned func) +{ + switch (func) { + case PIPE_FUNC_NEVER: + case PIPE_FUNC_LESS: + case PIPE_FUNC_EQUAL: + case PIPE_FUNC_LEQUAL: + case PIPE_FUNC_GREATER: + case PIPE_FUNC_NOTEQUAL: + case PIPE_FUNC_GEQUAL: + case PIPE_FUNC_ALWAYS: + return 0; + default: + assert(0); + return 0; + } +} + + +/* None of this state is actually used for anything yet. + */ static void * i915_create_blend_state(struct pipe_context *pipe, const struct pipe_blend_state *blend) @@ -147,7 +217,59 @@ static void * i915_create_sampler_state(struct pipe_context *pipe, const struct pipe_sampler_state *sampler) { - return 0; + struct i915_sampler_state *cso = calloc(1, sizeof(struct i915_sampler_state)); + cso->templ = sampler; + + const unsigned ws = sampler->wrap_s; + const unsigned wt = sampler->wrap_t; + const unsigned wr = sampler->wrap_r; + unsigned minFilt, magFilt; + unsigned mipFilt; + + mipFilt = translate_mip_filter(sampler->min_mip_filter); + if (sampler->max_anisotropy > 1.0) { + minFilt = FILTER_ANISOTROPIC; + magFilt = FILTER_ANISOTROPIC; + } + else { + minFilt = translate_img_filter( sampler->min_img_filter ); + magFilt = translate_img_filter( sampler->mag_img_filter ); + } + + { + int b = sampler->lod_bias * 16.0; + b = CLAMP(b, -256, 255); + cso->state[0] |= ((b << SS2_LOD_BIAS_SHIFT) & SS2_LOD_BIAS_MASK); + } + + /* Shadow: + */ + if (sampler->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE) + { + cso->state[0] |= (SS2_SHADOW_ENABLE | + translate_compare_func(sampler->compare_func)); + + minFilt = FILTER_4X4_FLAT; + magFilt = FILTER_4X4_FLAT; + } + + cso->state[0] |= ((minFilt << SS2_MIN_FILTER_SHIFT) | + (mipFilt << SS2_MIP_FILTER_SHIFT) | + (magFilt << SS2_MAG_FILTER_SHIFT)); + + cso->state[1] |= + ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) | + (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) | + (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT)); + + { + ubyte r = float_to_ubyte(sampler->border_color[0]); + ubyte g = float_to_ubyte(sampler->border_color[1]); + ubyte b = float_to_ubyte(sampler->border_color[2]); + ubyte a = float_to_ubyte(sampler->border_color[3]); + cso->state[2] = I915PACKCOLOR8888(r, g, b, a); + } + return cso; } static void i915_bind_sampler_state(struct pipe_context *pipe, @@ -156,7 +278,7 @@ static void i915_bind_sampler_state(struct pipe_context *pipe, struct i915_context *i915 = i915_context(pipe); assert(unit < PIPE_MAX_SAMPLERS); - i915->sampler[unit] = (const struct pipe_sampler_state *)sampler; + i915->sampler[unit] = (const struct i915_sampler_state*)sampler; i915->dirty |= I915_NEW_SAMPLER; } @@ -164,6 +286,7 @@ static void i915_bind_sampler_state(struct pipe_context *pipe, static void i915_delete_sampler_state(struct pipe_context *pipe, void *sampler) { + free(sampler); } |