diff --git a/src/swrenderer/drawers/r_draw_rgba.cpp b/src/swrenderer/drawers/r_draw_rgba.cpp index 36f85f6e49..8d7a807f1f 100644 --- a/src/swrenderer/drawers/r_draw_rgba.cpp +++ b/src/swrenderer/drawers/r_draw_rgba.cpp @@ -41,7 +41,7 @@ #include "swrenderer/scene/r_light.h" #include "r_draw_wall32.h" #include "r_draw_sprite32.h" -#include "r_draw_span32.h" +#include "r_draw_span32_sse2.h" #include "r_draw_sky32.h" #include "gi.h" diff --git a/src/swrenderer/drawers/r_draw_span32_sse2.h b/src/swrenderer/drawers/r_draw_span32_sse2.h new file mode 100644 index 0000000000..35fda5f922 --- /dev/null +++ b/src/swrenderer/drawers/r_draw_span32_sse2.h @@ -0,0 +1,509 @@ +/* +** Drawer commands for spans +** Copyright (c) 2016 Magnus Norddahl +** +** This software is provided 'as-is', without any express or implied +** warranty. In no event will the authors be held liable for any damages +** arising from the use of this software. +** +** Permission is granted to anyone to use this software for any purpose, +** including commercial applications, and to alter it and redistribute it +** freely, subject to the following restrictions: +** +** 1. The origin of this software must not be misrepresented; you must not +** claim that you wrote the original software. If you use this software +** in a product, an acknowledgment in the product documentation would be +** appreciated but is not required. +** 2. Altered source versions must be plainly marked as such, and must not be +** misrepresented as being the original software. +** 3. This notice may not be removed or altered from any source distribution. +** +*/ + +#pragma once + +#include "swrenderer/drawers/r_draw_rgba.h" +#include "swrenderer/viewport/r_spandrawer.h" + +namespace swrenderer +{ + namespace DrawSpan32TModes + { + enum class SpanBlendModes { Opaque, Masked, Translucent, AddClamp, SubClamp, RevSubClamp }; + struct OpaqueSpan { static const int Mode = (int)SpanBlendModes::Opaque; }; + struct MaskedSpan { static const int Mode = (int)SpanBlendModes::Masked; }; + struct TranslucentSpan { static const int Mode = (int)SpanBlendModes::Translucent; }; + struct AddClampSpan { static const int Mode = (int)SpanBlendModes::AddClamp; }; + struct SubClampSpan { static const int Mode = (int)SpanBlendModes::SubClamp; }; + struct RevSubClampSpan { static const int Mode = (int)SpanBlendModes::RevSubClamp; }; + + enum class FilterModes { Nearest, Linear }; + struct NearestFilter { static const int Mode = (int)FilterModes::Nearest; }; + struct LinearFilter { static const int Mode = (int)FilterModes::Linear; }; + + enum class ShadeMode { Simple, Advanced }; + struct SimpleShade { static const int Mode = (int)ShadeMode::Simple; }; + struct AdvancedShade { static const int Mode = (int)ShadeMode::Advanced; }; + + enum class SpanTextureSize { SizeAny, Size64x64 }; + struct TextureSizeAny { static const int Mode = (int)SpanTextureSize::SizeAny; }; + struct TextureSize64x64 { static const int Mode = (int)SpanTextureSize::Size64x64; }; + } + + template + class DrawSpan32T : public DrawerCommand + { + protected: + SpanDrawerArgs args; + + public: + DrawSpan32T(const SpanDrawerArgs &drawerargs) : args(drawerargs) { } + + struct TextureData + { + uint32_t xbits; + uint32_t ybits; + uint32_t xstep; + uint32_t ystep; + uint32_t xfrac; + uint32_t yfrac; + uint32_t yshift; + uint32_t xshift; + uint32_t xmask; + const uint32_t *source; + }; + + void Execute(DrawerThread *thread) override + { + using namespace DrawSpan32TModes; + + if (thread->line_skipped_by_thread(args.DestY())) return; + + TextureData texdata; + texdata.xbits = args.TextureWidthBits(); + texdata.ybits = args.TextureHeightBits(); + texdata.xstep = args.TextureUStep(); + texdata.ystep = args.TextureVStep(); + texdata.xfrac = args.TextureUPos(); + texdata.yfrac = args.TextureVPos(); + texdata.yshift = 32 - texdata.ybits; + texdata.xshift = texdata.yshift - texdata.xbits; + texdata.xmask = ((1 << texdata.xbits) - 1) << texdata.ybits; + + texdata.source = (const uint32_t*)args.TexturePixels(); + + double lod = args.TextureLOD(); + bool mipmapped = args.MipmappedTexture(); + + bool magnifying = lod < 0.0; + if (r_mipmap && mipmapped) + { + int level = (int)lod; + while (level > 0) + { + if (texdata.xbits <= 2 || texdata.ybits <= 2) + break; + + texdata.source += (1 << (texdata.xbits)) * (1 << (texdata.ybits)); + texdata.xbits -= 1; + texdata.ybits -= 1; + level--; + } + } + + bool is_nearest_filter = !((magnifying && r_magfilter) || (!magnifying && r_minfilter)); + bool is_64x64 = texdata.xbits == 6 && texdata.ybits == 6; + + auto shade_constants = args.ColormapConstants(); + if (shade_constants.simple_shade) + { + if (is_nearest_filter) + { + if (is_64x64) + Loop(thread, texdata, shade_constants); + else + Loop(thread, texdata, shade_constants); + } + else + { + if (is_64x64) + Loop(thread, texdata, shade_constants); + else + Loop(thread, texdata, shade_constants); + } + } + else + { + if (is_nearest_filter) + { + if (is_64x64) + Loop(thread, texdata, shade_constants); + else + Loop(thread, texdata, shade_constants); + } + else + { + if (is_64x64) + Loop(thread, texdata, shade_constants); + else + Loop(thread, texdata, shade_constants); + } + } + } + + template + void Loop(DrawerThread *thread, TextureData texdata, ShadeConstants shade_constants) + { + using namespace DrawSpan32TModes; + + // Shade constants + int light = 256 - (args.Light() >> (FRACBITS - 8)); + __m128i mlight = _mm_set_epi16(256, light, light, light, 256, light, light, light); + __m128i inv_light = _mm_set_epi16(0, 256 - light, 256 - light, 256 - light, 0, 256 - light, 256 - light, 256 - light); + + __m128i inv_desaturate, shade_fade, shade_light; + int desaturate; + if (ShadeModeT::Mode == (int)ShadeMode::Advanced) + { + inv_desaturate = _mm_setr_epi16(256, 256 - shade_constants.desaturate, 256 - shade_constants.desaturate, 256 - shade_constants.desaturate, 256, 256 - shade_constants.desaturate, 256 - shade_constants.desaturate, 256 - shade_constants.desaturate); + shade_fade = _mm_set_epi16(shade_constants.fade_alpha, shade_constants.fade_red, shade_constants.fade_green, shade_constants.fade_blue, shade_constants.fade_alpha, shade_constants.fade_red, shade_constants.fade_green, shade_constants.fade_blue); + shade_fade = _mm_mullo_epi16(shade_fade, inv_light); + shade_light = _mm_set_epi16(shade_constants.light_alpha, shade_constants.light_red, shade_constants.light_green, shade_constants.light_blue, shade_constants.light_alpha, shade_constants.light_red, shade_constants.light_green, shade_constants.light_blue); + desaturate = shade_constants.desaturate; + } + else + { + inv_desaturate = _mm_setzero_si128(); + shade_fade = _mm_setzero_si128(); + shade_fade = _mm_setzero_si128(); + shade_light = _mm_setzero_si128(); + desaturate = 0; + } + + auto lights = args.dc_lights; + auto num_lights = args.dc_num_lights; + float vpx = args.dc_viewpos.X; + float stepvpx = args.dc_viewpos_step.X; + __m128 viewpos_x = _mm_setr_ps(vpx, vpx + stepvpx, 0.0f, 0.0f); + __m128 step_viewpos_x = _mm_set1_ps(stepvpx * 2.0f); + + int count = args.DestX2() - args.DestX1() + 1; + int pitch = RenderViewport::Instance()->RenderTarget->GetPitch(); + uint32_t *dest = (uint32_t*)RenderViewport::Instance()->GetDest(args.DestX1(), args.DestY()); + + if (FilterModeT::Mode == (int)FilterModes::Linear) + { + texdata.xfrac -= 1 << (31 - texdata.xbits); + texdata.yfrac -= 1 << (31 - texdata.ybits); + } + + uint32_t srcalpha = args.SrcAlpha() >> (FRACBITS - 8); + uint32_t destalpha = args.DestAlpha() >> (FRACBITS - 8); + + int ssecount = count / 2; + for (int index = 0; index < ssecount; index++) + { + int offset = index * 2; + + __m128i bgcolor; + if (BlendT::Mode != (int)SpanBlendModes::Opaque) + { + bgcolor = _mm_unpacklo_epi8(_mm_loadl_epi64((__m128i*)(dest + offset)), _mm_setzero_si128()); + } + else + { + bgcolor = _mm_setzero_si128(); + } + + // Sample + unsigned int ifgcolor[2]; + ifgcolor[0] = Sample(texdata.xbits, texdata.ybits, texdata.xstep, texdata.ystep, texdata.xfrac, texdata.yfrac, texdata.yshift, texdata.xshift, texdata.xmask, texdata.source); + texdata.xfrac += texdata.xstep; + texdata.yfrac += texdata.ystep; + + ifgcolor[1] = Sample(texdata.xbits, texdata.ybits, texdata.xstep, texdata.ystep, texdata.xfrac, texdata.yfrac, texdata.yshift, texdata.xshift, texdata.xmask, texdata.source); + texdata.xfrac += texdata.xstep; + texdata.yfrac += texdata.ystep; + + __m128i fgcolor = _mm_unpacklo_epi8(_mm_loadl_epi64((__m128i*)ifgcolor), _mm_setzero_si128()); + + fgcolor = Shade(fgcolor, mlight, ifgcolor[0], ifgcolor[1], desaturate, inv_desaturate, shade_fade, shade_light, lights, num_lights, viewpos_x); + __m128i outcolor = Blend(fgcolor, bgcolor, srcalpha, destalpha, ifgcolor[0], ifgcolor[1]); + + _mm_storel_epi64((__m128i*)(dest + offset), outcolor); + viewpos_x = _mm_add_ps(viewpos_x, step_viewpos_x); + } + + if (ssecount * 2 != count) + { + int index = ssecount * 2; + int offset = index; + + __m128i bgcolor; + if (BlendT::Mode != (int)SpanBlendModes::Opaque) + { + bgcolor = _mm_unpacklo_epi8(_mm_cvtsi32_si128(dest[offset]), _mm_setzero_si128()); + } + else + { + bgcolor = _mm_setzero_si128(); + } + + // Sample + unsigned int ifgcolor[2]; + ifgcolor[0] = Sample(texdata.xbits, texdata.ybits, texdata.xstep, texdata.ystep, texdata.xfrac, texdata.yfrac, texdata.yshift, texdata.xshift, texdata.xmask, texdata.source); + ifgcolor[1] = 0; + + __m128i fgcolor = _mm_unpacklo_epi8(_mm_loadl_epi64((__m128i*)ifgcolor), _mm_setzero_si128()); + + fgcolor = Shade(fgcolor, mlight, ifgcolor[0], ifgcolor[1], desaturate, inv_desaturate, shade_fade, shade_light, lights, num_lights, viewpos_x); + __m128i outcolor = Blend(fgcolor, bgcolor, srcalpha, destalpha, ifgcolor[0], ifgcolor[1]); + + dest[offset] = _mm_cvtsi128_si32(outcolor); + } + + } + + template + unsigned int Sample(uint32_t xbits, uint32_t ybits, uint32_t xstep, uint32_t ystep, uint32_t xfrac, uint32_t yfrac, uint32_t yshift, uint32_t xshift, uint32_t xmask, const uint32_t *source) + { + using namespace DrawSpan32TModes; + + if (FilterModeT::Mode == (int)FilterModes::Nearest && TextureSizeT::Mode == (int)SpanTextureSize::Size64x64) + { + int sample_index = ((xfrac >> (32 - 6 - 6)) & (63 * 64)) + (yfrac >> (32 - 6)); + return source[sample_index]; + } + else if (FilterModeT::Mode == (int)FilterModes::Nearest) + { + int sample_index = ((xfrac >> xshift) & xmask) + (yfrac >> yshift); + return source[sample_index]; + } + else + { + uint32_t xxbits, yybits; + if (TextureSizeT::Mode == (int)SpanTextureSize::Size64x64) + { + xxbits = 26; + yybits = 26; + } + else + { + xxbits = 32 - xbits; + yybits = 32 - ybits; + } + + uint32_t xxshift = (32 - xxbits); + uint32_t yyshift = (32 - yybits); + uint32_t xxmask = (1 << xxshift) - 1; + uint32_t yymask = (1 << yyshift) - 1; + uint32_t x = xfrac >> xxbits; + uint32_t y = yfrac >> yybits; + + uint32_t p00 = source[((y & yymask) + ((x & xxmask) << yyshift))]; + uint32_t p01 = source[(((y + 1) & yymask) + ((x & xxmask) << yyshift))]; + uint32_t p10 = source[((y & yymask) + (((x + 1) & xxmask) << yyshift))]; + uint32_t p11 = source[(((y + 1) & yymask) + (((x + 1) & xxmask) << yyshift))]; + + uint32_t inv_b = (xfrac >> (xxbits - 4)) & 15; + uint32_t inv_a = (yfrac >> (yybits - 4)) & 15; + uint32_t a = 16 - inv_a; + uint32_t b = 16 - inv_b; + + uint32_t sred = (RPART(p00) * (a * b) + RPART(p01) * (inv_a * b) + RPART(p10) * (a * inv_b) + RPART(p11) * (inv_a * inv_b) + 127) >> 8; + uint32_t sgreen = (GPART(p00) * (a * b) + GPART(p01) * (inv_a * b) + GPART(p10) * (a * inv_b) + GPART(p11) * (inv_a * inv_b) + 127) >> 8; + uint32_t sblue = (BPART(p00) * (a * b) + BPART(p01) * (inv_a * b) + BPART(p10) * (a * inv_b) + BPART(p11) * (inv_a * inv_b) + 127) >> 8; + uint32_t salpha = (APART(p00) * (a * b) + APART(p01) * (inv_a * b) + APART(p10) * (a * inv_b) + APART(p11) * (inv_a * inv_b) + 127) >> 8; + + return (salpha << 24) | (sred << 16) | (sgreen << 8) | sblue; + } + } + + template + __m128i Shade(__m128i fgcolor, __m128i mlight, unsigned int ifgcolor0, unsigned int ifgcolor1, int desaturate, __m128i inv_desaturate, __m128i shade_fade, __m128i shade_light, const DrawerLight *lights, int num_lights, __m128 viewpos_x) + { + using namespace DrawSpan32TModes; + + __m128i material = fgcolor; + if (ShadeModeT::Mode == (int)ShadeMode::Simple) + { + fgcolor = _mm_srli_epi16(_mm_mullo_epi16(fgcolor, mlight), 8); + } + else + { + int blue0 = BPART(ifgcolor0); + int green0 = GPART(ifgcolor0); + int red0 = RPART(ifgcolor0); + int intensity0 = ((red0 * 77 + green0 * 143 + blue0 * 37) >> 8) * desaturate; + + int blue1 = BPART(ifgcolor1); + int green1 = GPART(ifgcolor1); + int red1 = RPART(ifgcolor1); + int intensity1 = ((red1 * 77 + green1 * 143 + blue1 * 37) >> 8) * desaturate; + + __m128i intensity = _mm_set_epi16(0, intensity1, intensity1, intensity1, 0, intensity0, intensity0, intensity0); + + fgcolor = _mm_srli_epi16(_mm_add_epi16(_mm_mullo_epi16(fgcolor, inv_desaturate), intensity), 8); + fgcolor = _mm_mullo_epi16(fgcolor, mlight); + fgcolor = _mm_srli_epi16(_mm_add_epi16(shade_fade, fgcolor), 8); + fgcolor = _mm_srli_epi16(_mm_mullo_epi16(fgcolor, shade_light), 8); + } + + return AddLights(material, fgcolor, lights, num_lights, viewpos_x); + } + + __m128i AddLights(__m128i material, __m128i fgcolor, const DrawerLight *lights, int num_lights, __m128 viewpos_x) + { + using namespace DrawSpan32TModes; + + __m128i lit = _mm_setzero_si128(); + + for (int i = 0; i != num_lights; i++) + { + __m128 light_x = _mm_set1_ps(lights[i].x); + __m128 light_y = _mm_set1_ps(lights[i].y); + __m128 light_z = _mm_set1_ps(lights[i].z); + __m128 light_radius = _mm_set1_ps(lights[i].radius); + __m128 m256 = _mm_set1_ps(256.0f); + + // L = light-pos + // dist = sqrt(dot(L, L)) + // distance_attenuation = 1 - MIN(dist * (1/radius), 1) + __m128 Lyz2 = light_y; // L.y*L.y + L.z*L.z + __m128 Lx = _mm_sub_ps(light_x, viewpos_x); + __m128 dist2 = _mm_add_ps(Lyz2, _mm_mul_ps(Lx, Lx)); + __m128 rcp_dist = _mm_rsqrt_ps(dist2); + __m128 dist = _mm_mul_ps(dist2, rcp_dist); + __m128 distance_attenuation = _mm_sub_ps(m256, _mm_min_ps(_mm_mul_ps(dist, light_radius), m256)); + + // The simple light type + __m128 simple_attenuation = distance_attenuation; + + // The point light type + // diffuse = dot(N,L) * attenuation + __m128 point_attenuation = _mm_mul_ps(_mm_mul_ps(light_z, rcp_dist), distance_attenuation); + + __m128 is_attenuated = _mm_cmpeq_ps(light_z, _mm_setzero_ps()); + __m128i attenuation = _mm_cvtps_epi32(_mm_or_ps(_mm_and_ps(is_attenuated, simple_attenuation), _mm_andnot_ps(is_attenuated, point_attenuation))); + attenuation = _mm_packs_epi32(_mm_shuffle_epi32(attenuation, _MM_SHUFFLE(0, 0, 0, 0)), _mm_shuffle_epi32(attenuation, _MM_SHUFFLE(1, 1, 1, 1))); + + __m128i light_color = _mm_cvtsi32_si128(lights[i].color); + light_color = _mm_unpacklo_epi8(light_color, _mm_setzero_si128()); + light_color = _mm_shuffle_epi32(light_color, _MM_SHUFFLE(1, 0, 1, 0)); + + lit = _mm_add_epi16(lit, _mm_srli_epi16(_mm_mullo_epi16(light_color, attenuation), 8)); + } + + fgcolor = _mm_add_epi16(fgcolor, _mm_srli_epi16(_mm_mullo_epi16(material, lit), 8)); + fgcolor = _mm_min_epi16(fgcolor, _mm_set1_epi16(255)); + return fgcolor; + } + + __m128i Blend(__m128i fgcolor, __m128i bgcolor, uint32_t srcalpha, uint32_t destalpha, unsigned int ifgcolor0, unsigned int ifgcolor1) + { + using namespace DrawSpan32TModes; + + if (BlendT::Mode == (int)SpanBlendModes::Opaque) + { + __m128i outcolor = fgcolor; + outcolor = _mm_packus_epi16(outcolor, _mm_setzero_si128()); + return outcolor; + } + else if (BlendT::Mode == (int)SpanBlendModes::Masked) + { + __m128i alpha = _mm_shufflelo_epi16(fgcolor, _MM_SHUFFLE(3, 3, 3, 3)); + alpha = _mm_shufflehi_epi16(fgcolor, _MM_SHUFFLE(3, 3, 3, 3)); + alpha = _mm_add_epi16(alpha, _mm_srli_epi16(alpha, 7)); // 255 -> 256 + __m128i inv_alpha = _mm_sub_epi16(_mm_set1_epi16(256), alpha); + + fgcolor = _mm_mullo_epi16(fgcolor, alpha); + bgcolor = _mm_mullo_epi16(bgcolor, inv_alpha); + __m128i outcolor = _mm_srli_epi16(_mm_add_epi16(fgcolor, bgcolor), 8); + outcolor = _mm_packus_epi16(outcolor, _mm_setzero_si128()); + outcolor = _mm_or_si128(outcolor, _mm_set1_epi32(0xff000000)); + return outcolor; + } + else if (BlendT::Mode == (int)SpanBlendModes::Translucent) + { + __m128i fgalpha = _mm_set1_epi16(srcalpha); + __m128i bgalpha = _mm_set1_epi16(destalpha); + + fgcolor = _mm_mullo_epi16(fgcolor, fgalpha); + bgcolor = _mm_mullo_epi16(bgcolor, bgalpha); + + __m128i fg_lo = _mm_unpacklo_epi16(fgcolor, _mm_setzero_si128()); + __m128i bg_lo = _mm_unpacklo_epi16(bgcolor, _mm_setzero_si128()); + __m128i fg_hi = _mm_unpackhi_epi16(fgcolor, _mm_setzero_si128()); + __m128i bg_hi = _mm_unpackhi_epi16(bgcolor, _mm_setzero_si128()); + + __m128i out_lo = _mm_add_epi32(fg_lo, bg_lo); + __m128i out_hi = _mm_add_epi32(fg_hi, bg_hi); + + out_lo = _mm_srai_epi32(out_lo, 8); + out_hi = _mm_srai_epi32(out_hi, 8); + __m128i outcolor = _mm_packs_epi32(out_lo, out_hi); + outcolor = _mm_packus_epi16(outcolor, _mm_setzero_si128()); + outcolor = _mm_or_si128(outcolor, _mm_set1_epi32(0xff000000)); + return outcolor; + } + else + { + uint32_t alpha0 = APART(ifgcolor0); + uint32_t alpha1 = APART(ifgcolor1); + alpha0 += alpha0 >> 7; // 255->256 + alpha1 += alpha1 >> 7; // 255->256 + uint32_t inv_alpha0 = 256 - alpha0; + uint32_t inv_alpha1 = 256 - alpha1; + + uint32_t bgalpha0 = (destalpha * alpha0 + (inv_alpha0 << 8) + 128) >> 8; + uint32_t bgalpha1 = (destalpha * alpha1 + (inv_alpha1 << 8) + 128) >> 8; + uint32_t fgalpha0 = (srcalpha * alpha0 + 128) >> 8; + uint32_t fgalpha1 = (srcalpha * alpha1 + 128) >> 8; + + __m128i bgalpha = _mm_set_epi16(bgalpha1, bgalpha1, bgalpha1, bgalpha1, bgalpha0, bgalpha0, bgalpha0, bgalpha0); + __m128i fgalpha = _mm_set_epi16(fgalpha1, fgalpha1, fgalpha1, fgalpha1, fgalpha0, fgalpha0, fgalpha0, fgalpha0); + + fgcolor = _mm_mullo_epi16(fgcolor, fgalpha); + bgcolor = _mm_mullo_epi16(bgcolor, bgalpha); + + __m128i fg_lo = _mm_unpacklo_epi16(fgcolor, _mm_setzero_si128()); + __m128i bg_lo = _mm_unpacklo_epi16(bgcolor, _mm_setzero_si128()); + __m128i fg_hi = _mm_unpackhi_epi16(fgcolor, _mm_setzero_si128()); + __m128i bg_hi = _mm_unpackhi_epi16(bgcolor, _mm_setzero_si128()); + + __m128i out_lo, out_hi; + if (BlendT::Mode == (int)SpanBlendModes::AddClamp) + { + out_lo = _mm_add_epi32(fg_lo, bg_lo); + out_hi = _mm_add_epi32(fg_hi, bg_hi); + } + else if (BlendT::Mode == (int)SpanBlendModes::SubClamp) + { + out_lo = _mm_sub_epi32(fg_lo, bg_lo); + out_hi = _mm_sub_epi32(fg_hi, bg_hi); + } + else if (BlendT::Mode == (int)SpanBlendModes::RevSubClamp) + { + out_lo = _mm_sub_epi32(bg_lo, fg_lo); + out_hi = _mm_sub_epi32(bg_hi, fg_hi); + } + + out_lo = _mm_srai_epi32(out_lo, 8); + out_hi = _mm_srai_epi32(out_hi, 8); + __m128i outcolor = _mm_packs_epi32(out_lo, out_hi); + outcolor = _mm_packus_epi16(outcolor, _mm_setzero_si128()); + outcolor = _mm_or_si128(outcolor, _mm_set1_epi32(0xff000000)); + return outcolor; + } + } + + FString DebugInfo() override { return "DrawSpan32T"; } + }; + + typedef DrawSpan32T DrawSpan32Command; + typedef DrawSpan32T DrawSpanMasked32Command; + typedef DrawSpan32T DrawSpanTranslucent32Command; + typedef DrawSpan32T DrawSpanAddClamp32Command; + typedef DrawSpan32T DrawSpanSubClamp32Command; + typedef DrawSpan32T DrawSpanRevSubClamp32Command; +}