/************************************************************************** * * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ /* Authors: Keith Whitwell */ #include "pipe/draw/draw_context.h" #include "pipe/p_winsys.h" #include "pipe/p_util.h" #include "i915_context.h" #include "i915_reg.h" #include "i915_state.h" #include "i915_state_inlines.h" /* 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; } } /* 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) { struct i915_blend_state *cso_data = calloc(1, sizeof(struct i915_blend_state)); { unsigned eqRGB = blend->rgb_func; unsigned srcRGB = blend->rgb_src_factor; unsigned dstRGB = blend->rgb_dst_factor; unsigned eqA = blend->alpha_func; unsigned srcA = blend->alpha_src_factor; unsigned dstA = blend->alpha_dst_factor; /* Special handling for MIN/MAX filter modes handled at * state_tracker level. */ if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) { cso_data->iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD | IAB_MODIFY_ENABLE | IAB_ENABLE | IAB_MODIFY_FUNC | IAB_MODIFY_SRC_FACTOR | IAB_MODIFY_DST_FACTOR | SRC_ABLND_FACT(i915_translate_blend_factor(srcA)) | DST_ABLND_FACT(i915_translate_blend_factor(dstA)) | (i915_translate_blend_func(eqA) << IAB_FUNC_SHIFT)); } else { cso_data->iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD | IAB_MODIFY_ENABLE | 0); } } cso_data->modes4 |= (_3DSTATE_MODES_4_CMD | ENABLE_LOGIC_OP_FUNC | LOGIC_OP_FUNC(i915_translate_logic_op(blend->logicop_func))); if (blend->logicop_enable) cso_data->LIS5 |= S5_LOGICOP_ENABLE; if (blend->dither) cso_data->LIS5 |= S5_COLOR_DITHER_ENABLE; if ((blend->colormask & PIPE_MASK_R) == 0) cso_data->LIS5 |= S5_WRITEDISABLE_RED; if ((blend->colormask & PIPE_MASK_G) == 0) cso_data->LIS5 |= S5_WRITEDISABLE_GREEN; if ((blend->colormask & PIPE_MASK_B) == 0) cso_data->LIS5 |= S5_WRITEDISABLE_BLUE; if ((blend->colormask & PIPE_MASK_A) == 0) cso_data->LIS5 |= S5_WRITEDISABLE_ALPHA; if (blend->blend_enable) { unsigned funcRGB = blend->rgb_func; unsigned srcRGB = blend->rgb_src_factor; unsigned dstRGB = blend->rgb_dst_factor; cso_data->LIS6 |= (S6_CBUF_BLEND_ENABLE | SRC_BLND_FACT(i915_translate_blend_factor(srcRGB)) | DST_BLND_FACT(i915_translate_blend_factor(dstRGB)) | (i915_translate_blend_func(funcRGB) << S6_CBUF_BLEND_FUNC_SHIFT)); } return cso_data; } static void i915_bind_blend_state(struct pipe_context *pipe, void *blend) { struct i915_context *i915 = i915_context(pipe); i915->blend = (struct i915_blend_state*)blend; i915->dirty |= I915_NEW_BLEND; } static void i915_delete_blend_state(struct pipe_context *pipe, void *blend) { free(blend); } static void i915_set_blend_color( struct pipe_context *pipe, const struct pipe_blend_color *blend_color ) { struct i915_context *i915 = i915_context(pipe); i915->blend_color = *blend_color; i915->dirty |= I915_NEW_BLEND; } static void * i915_create_sampler_state(struct pipe_context *pipe, const struct pipe_sampler_state *sampler) { 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; if (sampler->max_anisotropy > 2.0) { cso->state[0] |= SS2_MAX_ANISO_4; } } 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 | i915_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)); if (sampler->normalized_coords) cso->state[1] |= SS3_NORMALIZED_COORDS; { 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, unsigned unit, void *sampler) { struct i915_context *i915 = i915_context(pipe); assert(unit < PIPE_MAX_SAMPLERS); i915->sampler[unit] = (const struct i915_sampler_state*)sampler; i915->dirty |= I915_NEW_SAMPLER; } static void i915_delete_sampler_state(struct pipe_context *pipe, void *sampler) { free(sampler); } /** XXX move someday? Or consolidate all these simple state setters * into one file. */ static void * i915_create_depth_stencil_state(struct pipe_context *pipe, const struct pipe_depth_stencil_state *depth_stencil) { struct i915_depth_stencil_state *cso = calloc(1, sizeof(struct i915_depth_stencil_state)); { int testmask = depth_stencil->stencil.value_mask[0] & 0xff; int writemask = depth_stencil->stencil.write_mask[0] & 0xff; cso->stencil_modes4 |= (_3DSTATE_MODES_4_CMD | ENABLE_STENCIL_TEST_MASK | STENCIL_TEST_MASK(testmask) | ENABLE_STENCIL_WRITE_MASK | STENCIL_WRITE_MASK(writemask)); } if (depth_stencil->stencil.front_enabled) { int test = i915_translate_compare_func(depth_stencil->stencil.front_func); int fop = i915_translate_stencil_op(depth_stencil->stencil.front_fail_op); int dfop = i915_translate_stencil_op(depth_stencil->stencil.front_zfail_op); int dpop = i915_translate_stencil_op(depth_stencil->stencil.front_zpass_op); int ref = depth_stencil->stencil.ref_value[0] & 0xff; cso->stencil_LIS5 |= (S5_STENCIL_TEST_ENABLE | S5_STENCIL_WRITE_ENABLE | (ref << S5_STENCIL_REF_SHIFT) | (test << S5_STENCIL_TEST_FUNC_SHIFT) | (fop << S5_STENCIL_FAIL_SHIFT) | (dfop << S5_STENCIL_PASS_Z_FAIL_SHIFT) | (dpop << S5_STENCIL_PASS_Z_PASS_SHIFT)); } if (depth_stencil->stencil.back_enabled) { int test = i915_translate_compare_func(depth_stencil->stencil.back_func); int fop = i915_translate_stencil_op(depth_stencil->stencil.back_fail_op); int dfop = i915_translate_stencil_op(depth_stencil->stencil.back_zfail_op); int dpop = i915_translate_stencil_op(depth_stencil->stencil.back_zpass_op); int ref = depth_stencil->stencil.ref_value[1] & 0xff; int tmask = depth_stencil->stencil.value_mask[1] & 0xff; int wmask = depth_stencil->stencil.write_mask[1] & 0xff; cso->bfo[0] = (_3DSTATE_BACKFACE_STENCIL_OPS | BFO_ENABLE_STENCIL_FUNCS | BFO_ENABLE_STENCIL_TWO_SIDE | BFO_ENABLE_STENCIL_REF | BFO_STENCIL_TWO_SIDE | (ref << BFO_STENCIL_REF_SHIFT) | (test << BFO_STENCIL_TEST_SHIFT) | (fop << BFO_STENCIL_FAIL_SHIFT) | (dfop << BFO_STENCIL_PASS_Z_FAIL_SHIFT) | (dpop << BFO_STENCIL_PASS_Z_PASS_SHIFT)); cso->bfo[1] = (_3DSTATE_BACKFACE_STENCIL_MASKS | BFM_ENABLE_STENCIL_TEST_MASK | BFM_ENABLE_STENCIL_WRITE_MASK | (tmask << BFM_STENCIL_TEST_MASK_SHIFT) | (wmask << BFM_STENCIL_WRITE_MASK_SHIFT)); } else { /* This actually disables two-side stencil: The bit set is a * modify-enable bit to indicate we are changing the two-side * setting. Then there is a symbolic zero to show that we are * setting the flag to zero/off. */ cso->bfo[0] = (_3DSTATE_BACKFACE_STENCIL_OPS | BFO_ENABLE_STENCIL_TWO_SIDE | 0); cso->bfo[1] = 0; } if (depth_stencil->depth.enabled) { int func = i915_translate_compare_func(depth_stencil->depth.func); cso->depth_LIS6 |= (S6_DEPTH_TEST_ENABLE | (func << S6_DEPTH_TEST_FUNC_SHIFT)); if (depth_stencil->depth.writemask) cso->depth_LIS6 |= S6_DEPTH_WRITE_ENABLE; } return cso; } static void i915_bind_depth_stencil_state(struct pipe_context *pipe, void *depth_stencil) { struct i915_context *i915 = i915_context(pipe); i915->depth_stencil = (const struct i915_depth_stencil_state *)depth_stencil; i915->dirty |= I915_NEW_DEPTH_STENCIL; } static void i915_delete_depth_stencil_state(struct pipe_context *pipe, void *depth_stencil) { free(depth_stencil); } static void * i915_create_alpha_test_state(struct pipe_context *pipe, const struct pipe_alpha_test_state *alpha_test) { struct i915_alpha_test_state *cso = calloc(1, sizeof(struct i915_alpha_test_state)); if (alpha_test->enabled) { int test = i915_translate_compare_func(alpha_test->func); ubyte refByte = float_to_ubyte(alpha_test->ref); cso->LIS6 |= (S6_ALPHA_TEST_ENABLE | (test << S6_ALPHA_TEST_FUNC_SHIFT) | (((unsigned) refByte) << S6_ALPHA_REF_SHIFT)); } return cso; } static void i915_bind_alpha_test_state(struct pipe_context *pipe, void *alpha) { struct i915_context *i915 = i915_context(pipe); i915->alpha_test = (const struct i915_alpha_test_state*)alpha; i915->dirty |= I915_NEW_ALPHA_TEST; } static void i915_delete_alpha_test_state(struct pipe_context *pipe, void *alpha) { free(alpha); } static void i915_set_scissor_state( struct pipe_context *pipe, const struct pipe_scissor_state *scissor ) { struct i915_context *i915 = i915_context(pipe); memcpy( &i915->scissor, scissor, sizeof(*scissor) ); i915->dirty |= I915_NEW_SCISSOR; } static void i915_set_polygon_stipple( struct pipe_context *pipe, const struct pipe_poly_stipple *stipple ) { } static void i915_set_sampler_units(struct pipe_context *pipe, uint numSamplers, const uint *units) { struct i915_context *i915 = i915_context(pipe); uint i; for (i = 0; i < numSamplers; i++) i915->sampler_units[i] = units[i]; } static void * i915_create_fs_state(struct pipe_context *pipe, const struct pipe_shader_state *templ) { return 0; } static void i915_bind_fs_state(struct pipe_context *pipe, void *fs) { struct i915_context *i915 = i915_context(pipe); i915->fs = (struct pipe_shader_state *)fs; i915->dirty |= I915_NEW_FS; } static void i915_delete_fs_state(struct pipe_context *pipe, void *shader) { /*do nothing*/ } static void * i915_create_vs_state(struct pipe_context *pipe, const struct pipe_shader_state *templ) { struct i915_context *i915 = i915_context(pipe); /* just pass-through to draw module */ return draw_create_vertex_shader(i915->draw, templ); } static void i915_bind_vs_state(struct pipe_context *pipe, void *vs) { struct i915_context *i915 = i915_context(pipe); /* just pass-through to draw module */ draw_bind_vertex_shader(i915->draw, vs); } static void i915_delete_vs_state(struct pipe_context *pipe, void *shader) { struct i915_context *i915 = i915_context(pipe); /* just pass-through to draw module */ draw_delete_vertex_shader(i915->draw, shader); } static void i915_set_constant_buffer(struct pipe_context *pipe, uint shader, uint index, const struct pipe_constant_buffer *buf) { struct i915_context *i915 = i915_context(pipe); struct pipe_winsys *ws = pipe->winsys; assert(shader < PIPE_SHADER_TYPES); assert(index == 0); /* Make a copy of shader constants. * During fragment program translation we may add additional * constants to the array. * * We want to consider the situation where some user constants * (ex: a material color) may change frequently but the shader program * stays the same. In that case we should only be updating the first * N constants, leaving any extras from shader translation alone. */ { void *mapped; if (buf->size && (mapped = ws->buffer_map(ws, buf->buffer, PIPE_BUFFER_FLAG_READ))) { memcpy(i915->current.constants[shader], mapped, buf->size); ws->buffer_unmap(ws, buf->buffer); i915->current.num_user_constants[shader] = buf->size / (4 * sizeof(float)); } else { i915->current.num_user_constants[shader] = 0; } } i915->dirty |= I915_NEW_CONSTANTS; } static void i915_set_texture_state(struct pipe_context *pipe, unsigned unit, struct pipe_mipmap_tree *texture) { struct i915_context *i915 = i915_context(pipe); i915->texture[unit] = texture; /* ptr, not struct */ i915->dirty |= I915_NEW_TEXTURE; } static void i915_set_framebuffer_state(struct pipe_context *pipe, const struct pipe_framebuffer_state *fb) { struct i915_context *i915 = i915_context(pipe); i915->framebuffer = *fb; /* struct copy */ i915->dirty |= I915_NEW_FRAMEBUFFER; } static void i915_set_feedback_state(struct pipe_context *pipe, const struct pipe_feedback_state *feedback) { struct i915_context *i915 = i915_context(pipe); i915->feedback = *feedback; draw_set_feedback_state(i915->draw, feedback); } static void i915_set_feedback_buffer(struct pipe_context *pipe, unsigned index, const struct pipe_feedback_buffer *feedback) { struct i915_context *i915 = i915_context(pipe); assert(index < PIPE_MAX_FEEDBACK_ATTRIBS); /* Need to be careful with referencing */ pipe->winsys->buffer_reference(pipe->winsys, &i915->feedback_buffer[index].buffer, feedback->buffer); i915->feedback_buffer[index].size = feedback->size; i915->feedback_buffer[index].start_offset = feedback->start_offset; } static void i915_set_clear_color_state(struct pipe_context *pipe, const struct pipe_clear_color_state *clear) { struct i915_context *i915 = i915_context(pipe); i915->clear_color = *clear; /* struct copy */ } static void i915_set_clip_state( struct pipe_context *pipe, const struct pipe_clip_state *clip ) { struct i915_context *i915 = i915_context(pipe); draw_set_clip_state(i915->draw, clip); i915->dirty |= I915_NEW_CLIP; } /* Called when driver state tracker notices changes to the viewport * matrix: */ static void i915_set_viewport_state( struct pipe_context *pipe, const struct pipe_viewport_state *viewport ) { struct i915_context *i915 = i915_context(pipe); i915->viewport = *viewport; /* struct copy */ /* pass the viewport info to the draw module */ draw_set_viewport_state(i915->draw, &i915->viewport); i915->dirty |= I915_NEW_VIEWPORT; } static void * i915_create_rasterizer_state(struct pipe_context *pipe, const struct pipe_rasterizer_state *rasterizer) { struct i915_rasterizer_state *cso = calloc(1, sizeof(struct i915_rasterizer_state)); cso->templ = rasterizer; cso->color_interp = rasterizer->flatshade ? INTERP_CONSTANT : INTERP_LINEAR; cso->light_twoside = rasterizer->light_twoside; cso->ds[0].u = _3DSTATE_DEPTH_OFFSET_SCALE; cso->ds[1].f = rasterizer->offset_scale; if (rasterizer->poly_stipple_enable) { cso->st |= ST1_ENABLE; } if (rasterizer->scissor) cso->sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT; else cso->sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT; switch (rasterizer->cull_mode) { case PIPE_WINDING_NONE: cso->LIS4 |= S4_CULLMODE_NONE; break; case PIPE_WINDING_CW: cso->LIS4 |= S4_CULLMODE_CW; break; case PIPE_WINDING_CCW: cso->LIS4 |= S4_CULLMODE_CCW; break; case PIPE_WINDING_BOTH: cso->LIS4 |= S4_CULLMODE_BOTH; break; } { int line_width = CLAMP((int)(rasterizer->line_width * 2), 1, 0xf); cso->LIS4 |= line_width << S4_LINE_WIDTH_SHIFT; if (rasterizer->line_smooth) cso->LIS4 |= S4_LINE_ANTIALIAS_ENABLE; } { int point_size = CLAMP((int) rasterizer->point_size, 1, 0xff); cso->LIS4 |= point_size << S4_POINT_WIDTH_SHIFT; } if (rasterizer->flatshade) { cso->LIS4 |= (S4_FLATSHADE_ALPHA | S4_FLATSHADE_COLOR | S4_FLATSHADE_SPECULAR); } cso->LIS7 = rasterizer->offset_units; /* probably incorrect */ return cso; } static void i915_bind_rasterizer_state( struct pipe_context *pipe, void *setup ) { struct i915_context *i915 = i915_context(pipe); i915->rasterizer = (struct i915_rasterizer_state *)setup; /* pass-through to draw module */ draw_set_rasterizer_state(i915->draw, i915->rasterizer->templ); i915->dirty |= I915_NEW_RASTERIZER; } static void i915_delete_rasterizer_state(struct pipe_context *pipe, void *setup) { free(setup); } static void i915_set_vertex_buffer( struct pipe_context *pipe, unsigned index, const struct pipe_vertex_buffer *buffer ) { struct i915_context *i915 = i915_context(pipe); i915->vertex_buffer[index] = *buffer; /* pass-through to draw module */ draw_set_vertex_buffer(i915->draw, index, buffer); } static void i915_set_vertex_element( struct pipe_context *pipe, unsigned index, const struct pipe_vertex_element *element) { struct i915_context *i915 = i915_context(pipe); /* pass-through to draw module */ draw_set_vertex_element(i915->draw, index, element); } void i915_init_state_functions( struct i915_context *i915 ) { i915->pipe.create_alpha_test_state = i915_create_alpha_test_state; i915->pipe.bind_alpha_test_state = i915_bind_alpha_test_state; i915->pipe.delete_alpha_test_state = i915_delete_alpha_test_state; i915->pipe.create_blend_state = i915_create_blend_state; i915->pipe.bind_blend_state = i915_bind_blend_state; i915->pipe.delete_blend_state = i915_delete_blend_state; i915->pipe.create_sampler_state = i915_create_sampler_state; i915->pipe.bind_sampler_state = i915_bind_sampler_state; i915->pipe.delete_sampler_state = i915_delete_sampler_state; i915->pipe.create_depth_stencil_state = i915_create_depth_stencil_state; i915->pipe.bind_depth_stencil_state = i915_bind_depth_stencil_state; i915->pipe.delete_depth_stencil_state = i915_delete_depth_stencil_state; i915->pipe.create_rasterizer_state = i915_create_rasterizer_state; i915->pipe.bind_rasterizer_state = i915_bind_rasterizer_state; i915->pipe.delete_rasterizer_state = i915_delete_rasterizer_state; i915->pipe.create_fs_state = i915_create_fs_state; i915->pipe.bind_fs_state = i915_bind_fs_state; i915->pipe.delete_fs_state = i915_delete_fs_state; i915->pipe.create_vs_state = i915_create_vs_state; i915->pipe.bind_vs_state = i915_bind_vs_state; i915->pipe.delete_vs_state = i915_delete_vs_state; i915->pipe.set_blend_color = i915_set_blend_color; i915->pipe.set_clip_state = i915_set_clip_state; i915->pipe.set_clear_color_state = i915_set_clear_color_state; i915->pipe.set_constant_buffer = i915_set_constant_buffer; i915->pipe.set_framebuffer_state = i915_set_framebuffer_state; i915->pipe.set_feedback_state = i915_set_feedback_state; i915->pipe.set_feedback_buffer = i915_set_feedback_buffer; i915->pipe.set_polygon_stipple = i915_set_polygon_stipple; i915->pipe.set_sampler_units = i915_set_sampler_units; i915->pipe.set_scissor_state = i915_set_scissor_state; i915->pipe.set_texture_state = i915_set_texture_state; i915->pipe.set_viewport_state = i915_set_viewport_state; i915->pipe.set_vertex_buffer = i915_set_vertex_buffer; i915->pipe.set_vertex_element = i915_set_vertex_element; }