path: root/es_2_0/Fragment.c

/* 
 * Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
 * 
 * Contact:
 * DongKyun Yun <dk77.yun@samsung.com>
 * SangJin Kim <sangjin3.kim@samsung.com>
 * HyunGoo Kang <hyungoo1.kang@samsung.com>
 *
 * 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, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS 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.
 * 
 * Contributors:
 * - S-Core Co., Ltd
 *
 */

#include "es2front.h"


void GL_APIENTRY ES2ENTRY(Scissor)(GLint x, GLint y, GLsizei width, GLsizei height) {
	if (width < 0 || height < 0) {
		ES2INTER(SetError)(GL_INVALID_VALUE);
		return;
	}
	FNPTR(Scissor)(x, y, width, height);
}

void GL_APIENTRY ES2ENTRY(StencilFunc)(GLenum func, GLint ref, GLuint mask) {
	switch (func) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_NEVER:
	case GL_LESS:
	case GL_LEQUAL:
	case GL_GREATER:
	case GL_GEQUAL:
	case GL_EQUAL:
	case GL_NOTEQUAL:
	case GL_ALWAYS:
		break;
	}
	FNPTR(StencilFunc)(func, ref, mask);
}

void GL_APIENTRY ES2ENTRY(StencilFuncSeparate)(GLenum face, GLenum func, GLint ref, GLuint mask) {
	switch (face) {
	default:
		ES2INTER(SetError)(GL_INVALID_VALUE);
		return;
	case GL_FRONT:
	case GL_BACK:
	case GL_FRONT_AND_BACK:
		break;
	}
	switch (func) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_NEVER:
	case GL_LESS:
	case GL_LEQUAL:
	case GL_GREATER:
	case GL_GEQUAL:
	case GL_EQUAL:
	case GL_NOTEQUAL:
	case GL_ALWAYS:
		break;
	}
	FNPTR(StencilFuncSeparate)(face, func, ref, mask);
}

void GL_APIENTRY ES2ENTRY(StencilOp)(GLenum fail, GLenum zfail, GLenum zpass) {
	switch (fail) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_KEEP:
	case GL_REPLACE:
	case GL_INCR:
	case GL_INCR_WRAP:
	case GL_DECR:
	case GL_DECR_WRAP:
	case GL_INVERT:
		break;
	}
	switch (zfail) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_KEEP:
	case GL_REPLACE:
	case GL_INCR:
	case GL_INCR_WRAP:
	case GL_DECR:
	case GL_DECR_WRAP:
	case GL_INVERT:
		break;
	}
	switch (zpass) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_KEEP:
	case GL_REPLACE:
	case GL_INCR:
	case GL_INCR_WRAP:
	case GL_DECR:
	case GL_DECR_WRAP:
	case GL_INVERT:
		break;
	}
	FNPTR(StencilOp)(fail, zfail, zpass);
}

void GL_APIENTRY ES2ENTRY(StencilOpSeparate)(GLenum face, GLenum fail, GLenum zfail, GLenum zpass) {
	switch (face) {
	default:
		ES2INTER(SetError)(GL_INVALID_VALUE);
		return;
	case GL_FRONT:
	case GL_BACK:
	case GL_FRONT_AND_BACK:
		break;
	}
	switch (fail) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_KEEP:
	case GL_REPLACE:
	case GL_INCR:
	case GL_INCR_WRAP:
	case GL_DECR:
	case GL_DECR_WRAP:
	case GL_INVERT:
		break;
	}
	switch (zfail) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_KEEP:
	case GL_REPLACE:
	case GL_INCR:
	case GL_INCR_WRAP:
	case GL_DECR:
	case GL_DECR_WRAP:
	case GL_INVERT:
		break;
	}
	switch (zpass) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_KEEP:
	case GL_REPLACE:
	case GL_INCR:
	case GL_INCR_WRAP:
	case GL_DECR:
	case GL_DECR_WRAP:
	case GL_INVERT:
		break;
	}
	FNPTR(StencilOpSeparate)(face, fail, zfail, zpass);
}

void GL_APIENTRY ES2ENTRY(DepthFunc)(GLenum func) {
	switch (func) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_NEVER:
	case GL_LESS:
	case GL_EQUAL:
	case GL_LEQUAL:
	case GL_GREATER:
	case GL_NOTEQUAL:
	case GL_GEQUAL:
	case GL_ALWAYS:
		break;
	}
	FNPTR(DepthFunc)(func);
}

void GL_APIENTRY ES2ENTRY(BlendFunc)(GLenum sfactor, GLenum dfactor) {
	switch (sfactor) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_ONE:
	case GL_SRC_COLOR:
	case GL_ONE_MINUS_SRC_COLOR:
	case GL_DST_COLOR:
	case GL_ONE_MINUS_DST_COLOR:
	case GL_SRC_ALPHA:
	case GL_ONE_MINUS_SRC_ALPHA:
	case GL_DST_ALPHA:
	case GL_ONE_MINUS_DST_ALPHA:
	case GL_CONSTANT_COLOR:
	case GL_ONE_MINUS_CONSTANT_COLOR:
	case GL_CONSTANT_ALPHA:
	case GL_ONE_MINUS_CONSTANT_ALPHA:
	case GL_SRC_ALPHA_SATURATE:
		break;
	}
	switch (dfactor) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_ONE:
	case GL_SRC_COLOR:
	case GL_ONE_MINUS_SRC_COLOR:
	case GL_DST_COLOR:
	case GL_ONE_MINUS_DST_COLOR:
	case GL_SRC_ALPHA:
	case GL_ONE_MINUS_SRC_ALPHA:
	case GL_DST_ALPHA:
	case GL_ONE_MINUS_DST_ALPHA:
	case GL_CONSTANT_COLOR:
	case GL_ONE_MINUS_CONSTANT_COLOR:
	case GL_CONSTANT_ALPHA:
	case GL_ONE_MINUS_CONSTANT_ALPHA:
		break;
	}
	FNPTR(BlendFunc)(sfactor, dfactor);
}

void GL_APIENTRY ES2ENTRY(BlendFuncSeparate)(GLenum srcRGB, GLenum dstRGB,
        GLenum srcAlpha, GLenum dstAlpha) {
	switch (srcRGB) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_ONE:
	case GL_SRC_COLOR:
	case GL_ONE_MINUS_SRC_COLOR:
	case GL_DST_COLOR:
	case GL_ONE_MINUS_DST_COLOR:
	case GL_SRC_ALPHA:
	case GL_ONE_MINUS_SRC_ALPHA:
	case GL_DST_ALPHA:
	case GL_ONE_MINUS_DST_ALPHA:
	case GL_CONSTANT_COLOR:
	case GL_ONE_MINUS_CONSTANT_COLOR:
	case GL_CONSTANT_ALPHA:
	case GL_ONE_MINUS_CONSTANT_ALPHA:
	case GL_SRC_ALPHA_SATURATE:
		break;
	}
	switch (dstRGB) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_ONE:
	case GL_SRC_COLOR:
	case GL_ONE_MINUS_SRC_COLOR:
	case GL_DST_COLOR:
	case GL_ONE_MINUS_DST_COLOR:
	case GL_SRC_ALPHA:
	case GL_ONE_MINUS_SRC_ALPHA:
	case GL_DST_ALPHA:
	case GL_ONE_MINUS_DST_ALPHA:
	case GL_CONSTANT_COLOR:
	case GL_ONE_MINUS_CONSTANT_COLOR:
	case GL_CONSTANT_ALPHA:
	case GL_ONE_MINUS_CONSTANT_ALPHA:
		break;
	}
	switch (srcAlpha) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_ONE:
	case GL_SRC_COLOR:
	case GL_ONE_MINUS_SRC_COLOR:
	case GL_DST_COLOR:
	case GL_ONE_MINUS_DST_COLOR:
	case GL_SRC_ALPHA:
	case GL_ONE_MINUS_SRC_ALPHA:
	case GL_DST_ALPHA:
	case GL_ONE_MINUS_DST_ALPHA:
	case GL_CONSTANT_COLOR:
	case GL_ONE_MINUS_CONSTANT_COLOR:
	case GL_CONSTANT_ALPHA:
	case GL_ONE_MINUS_CONSTANT_ALPHA:
	case GL_SRC_ALPHA_SATURATE:
		break;
	}
	switch (dstAlpha) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ZERO:
	case GL_ONE:
	case GL_SRC_COLOR:
	case GL_ONE_MINUS_SRC_COLOR:
	case GL_DST_COLOR:
	case GL_ONE_MINUS_DST_COLOR:
	case GL_SRC_ALPHA:
	case GL_ONE_MINUS_SRC_ALPHA:
	case GL_DST_ALPHA:
	case GL_ONE_MINUS_DST_ALPHA:
	case GL_CONSTANT_COLOR:
	case GL_ONE_MINUS_CONSTANT_COLOR:
	case GL_CONSTANT_ALPHA:
	case GL_ONE_MINUS_CONSTANT_ALPHA:
		break;
	}
	FNPTR(BlendFuncSeparate)(srcRGB, dstRGB, srcAlpha, dstAlpha);
}

void GL_APIENTRY ES2ENTRY(BlendColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha) {
	FNPTR(BlendColor)(red, green, blue, alpha);
}

void GL_APIENTRY ES2ENTRY(BlendEquation)(GLenum mode) {
	switch (mode) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_FUNC_ADD:
	case GL_FUNC_SUBTRACT:
	case GL_FUNC_REVERSE_SUBTRACT:
		break;
	}
	FNPTR(BlendEquation)(mode);
}

void GL_APIENTRY ES2ENTRY(BlendEquationSeparate)(GLenum modeRGB, GLenum modeAlpha) {
	switch (modeRGB) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_FUNC_ADD:
	case GL_FUNC_SUBTRACT:
	case GL_FUNC_REVERSE_SUBTRACT:
		break;
	}
	switch (modeAlpha) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_FUNC_ADD:
	case GL_FUNC_SUBTRACT:
	case GL_FUNC_REVERSE_SUBTRACT:
		break;
	}
	FNPTR(BlendEquationSeparate)(modeRGB, modeAlpha);
}

void GL_APIENTRY ES2ENTRY(SampleCoverage)(GLclampf value, GLboolean invert) {
	FNPTR(SampleCoverage)(value, invert);
}

void GL_APIENTRY ES2ENTRY(ReadPixels)(GLint x, GLint y,
        GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid* pixels) {
	switch (format) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_ALPHA:
	case GL_RGB:
	case GL_RGBA:
		break;
	}
	switch (type) {
	default:
		ES2INTER(SetError)(GL_INVALID_ENUM);
		return;
	case GL_UNSIGNED_BYTE:
		break;
	case GL_UNSIGNED_SHORT_5_6_5:
		if (format != GL_RGB) {
			ES2INTER(SetError)(GL_INVALID_OPERATION);
			return;
		}
		break;
	case GL_UNSIGNED_SHORT_4_4_4_4:
	case GL_UNSIGNED_SHORT_5_5_5_1:
		if (format != GL_RGBA) {
			ES2INTER(SetError)(GL_INVALID_OPERATION);
			return;
		}
		break;
	}
	if (width < 0 || height < 0) {
		ES2INTER(SetError)(GL_INVALID_VALUE);
		return;
	}
	
	FNPTR(ReadPixels)(x, y, width, height, format, type, pixels);
}