// license:BSD-3-Clause // copyright-holders:Vas Crabb, Ryan Holtz /*************************************************************************** rgbgen.c General RGB utilities. ***************************************************************************/ #if !(defined(__ALTIVEC__) || ((!defined(MAME_DEBUG) || defined(__OPTIMIZE__)) && (defined(__SSE2__) || defined(_MSC_VER)) && defined(PTR64))) #include "emu.h" #include "rgbgen.h" /*************************************************************************** HIGHER LEVEL OPERATIONS ***************************************************************************/ /*------------------------------------------------- rgbaint_blend - blend two colors by the given scale factor -------------------------------------------------*/ void rgbaint_t::blend(const rgbaint_t& color2, uint8_t color1scale) { int32_t scale1 = (int32_t)color1scale; int32_t scale2 = 256 - scale1; m_a = (m_a * scale1 + color2.m_a * scale2) >> 8; m_r = (m_r * scale1 + color2.m_r * scale2) >> 8; m_g = (m_g * scale1 + color2.m_g * scale2) >> 8; m_b = (m_b * scale1 + color2.m_b * scale2) >> 8; m_a |= (m_a & 0x00800000) ? 0xff000000 : 0; m_r |= (m_r & 0x00800000) ? 0xff000000 : 0; m_g |= (m_g & 0x00800000) ? 0xff000000 : 0; m_b |= (m_b & 0x00800000) ? 0xff000000 : 0; } /*------------------------------------------------- rgbaint_scale_and_clamp - scale the given color by an 8.8 scale factor, immediate or per channel, and clamp to byte values -------------------------------------------------*/ void rgbaint_t::scale_imm_and_clamp(int32_t scale) { m_a = (m_a * scale) >> 8; m_r = (m_r * scale) >> 8; m_g = (m_g * scale) >> 8; m_b = (m_b * scale) >> 8; m_a |= (m_a & 0x00800000) ? 0xff000000 : 0; m_r |= (m_r & 0x00800000) ? 0xff000000 : 0; m_g |= (m_g & 0x00800000) ? 0xff000000 : 0; m_b |= (m_b & 0x00800000) ? 0xff000000 : 0; if ((uint32_t)m_a > 255) { m_a = (m_a < 0) ? 0 : 255; } if ((uint32_t)m_r > 255) { m_r = (m_r < 0) ? 0 : 255; } if ((uint32_t)m_g > 255) { m_g = (m_g < 0) ? 0 : 255; } if ((uint32_t)m_b > 255) { m_b = (m_b < 0) ? 0 : 255; } } void rgbaint_t::scale_and_clamp(const rgbaint_t& scale) { m_a = (m_a * scale.m_a) >> 8; m_r = (m_r * scale.m_r) >> 8; m_g = (m_g * scale.m_g) >> 8; m_b = (m_b * scale.m_b) >> 8; m_a |= (m_a & 0x00800000) ? 0xff000000 : 0; m_r |= (m_r & 0x00800000) ? 0xff000000 : 0; m_g |= (m_g & 0x00800000) ? 0xff000000 : 0; m_b |= (m_b & 0x00800000) ? 0xff000000 : 0; if ((uint32_t)m_a > 255) { m_a = (m_a < 0) ? 0 : 255; } if ((uint32_t)m_r > 255) { m_r = (m_r < 0) ? 0 : 255; } if ((uint32_t)m_g > 255) { m_g = (m_g < 0) ? 0 : 255; } if ((uint32_t)m_b > 255) { m_b = (m_b < 0) ? 0 : 255; } } void rgbaint_t::scale_imm_add_and_clamp(int32_t scale, const rgbaint_t& other) { m_a = (m_a * scale) >> 8; m_r = (m_r * scale) >> 8; m_g = (m_g * scale) >> 8; m_b = (m_b * scale) >> 8; m_a |= (m_a & 0x00800000) ? 0xff000000 : 0; m_r |= (m_r & 0x00800000) ? 0xff000000 : 0; m_g |= (m_g & 0x00800000) ? 0xff000000 : 0; m_b |= (m_b & 0x00800000) ? 0xff000000 : 0; m_a += other.m_a; m_r += other.m_r; m_g += other.m_g; m_b += other.m_b; if ((uint32_t)m_a > 255) { m_a = (m_a < 0) ? 0 : 255; } if ((uint32_t)m_r > 255) { m_r = (m_r < 0) ? 0 : 255; } if ((uint32_t)m_g > 255) { m_g = (m_g < 0) ? 0 : 255; } if ((uint32_t)m_b > 255) { m_b = (m_b < 0) ? 0 : 255; } } void rgbaint_t::scale_add_and_clamp(const rgbaint_t& scale, const rgbaint_t& other) { m_a = (m_a * scale.m_a) >> 8; m_r = (m_r * scale.m_r) >> 8; m_g = (m_g * scale.m_g) >> 8; m_b = (m_b * scale.m_b) >> 8; m_a |= (m_a & 0x00800000) ? 0xff000000 : 0; m_r |= (m_r & 0x00800000) ? 0xff000000 : 0; m_g |= (m_g & 0x00800000) ? 0xff000000 : 0; m_b |= (m_b & 0x00800000) ? 0xff000000 : 0; m_a += other.m_a; m_r += other.m_r; m_g += other.m_g; m_b += other.m_b; if ((uint32_t)m_a > 255) { m_a = (m_a < 0) ? 0 : 255; } if ((uint32_t)m_r > 255) { m_r = (m_r < 0) ? 0 : 255; } if ((uint32_t)m_g > 255) { m_g = (m_g < 0) ? 0 : 255; } if ((uint32_t)m_b > 255) { m_b = (m_b < 0) ? 0 : 255; } } void rgbaint_t::scale2_add_and_clamp(const rgbaint_t& scale, const rgbaint_t& other, const rgbaint_t& scale2) { m_a = (m_a * scale.m_a + other.m_a * scale2.m_a) >> 8; m_r = (m_r * scale.m_r + other.m_r * scale2.m_r) >> 8; m_g = (m_g * scale.m_g + other.m_g * scale2.m_g) >> 8; m_b = (m_b * scale.m_b + other.m_b * scale2.m_b) >> 8; m_a |= (m_a & 0x00800000) ? 0xff000000 : 0; m_r |= (m_r & 0x00800000) ? 0xff000000 : 0; m_g |= (m_g & 0x00800000) ? 0xff000000 : 0; m_b |= (m_b & 0x00800000) ? 0xff000000 : 0; if ((uint32_t)m_a > 255) { m_a = (m_a < 0) ? 0 : 255; } if ((uint32_t)m_r > 255) { m_r = (m_r < 0) ? 0 : 255; } if ((uint32_t)m_g > 255) { m_g = (m_g < 0) ? 0 : 255; } if ((uint32_t)m_b > 255) { m_b = (m_b < 0) ? 0 : 255; } } #endif // !defined(__ALTIVEC__)