{"id":3933,"date":"2018-04-12T23:37:52","date_gmt":"2018-04-12T15:37:52","guid":{"rendered":"http:\/\/www.bookcard.net\/wordpress\/?p=3933"},"modified":"2018-10-14T21:21:02","modified_gmt":"2018-10-14T13:21:02","slug":"opengl_vertex_array","status":"publish","type":"post","link":"https:\/\/www.bookcard.net\/wordpress\/opengl_vertex_array\/","title":{"rendered":"OpenGL\u9802\u9ede\u6578\u7d44"},"content":{"rendered":"
\"\"<\/a>
OpenGL\u9802\u9ede\u6578\u7d44<\/figcaption><\/figure>\n

\u904a\u6232\u7684\u5be6\u969b\u7684\u958b\u767c\u4e2d\u5c07\u6703\u5927\u91cf\u983b\u7e41\u5730\u8655\u7406\u9802\u9ede,\u5728\u7c21\u55ae\u591a\u908a\u5f62\u53ef\u4ee5\u4f7f\u7528\u4ee3\u78bc\u76f4\u63a5\u751f\u6210\u6a21\u578b\u9802\u9ede.\u800c\u771f\u6b63\u7684\u904a\u6232\u96a8\u4fbf\u4e00\u500b\u6a21\u578b\u5c31\u53ef\u80fd\u6709\u5e7e\u767e\u6216\u5e7e\u5343\u500b\u591a\u908a\u5f62.\u4e0d\u53ef\u80fd\u4f7f\u7528\u4ee3\u78bc\u76f4\u63a5\u751f\u6210.\u89e3\u6c7a\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u300e\u9802\u9ede\u6578\u7d44\u300f(Vertex Array).\u901a\u904e\u5efa\u6a21\u8edf\u4ef6\u9032\u5f623D\u5efa\u6a21,\u7136\u5f8c\u8f38\u51fa\u7279\u5b9a\u7684\u6587\u672c\u6587\u6a94\u6216\u4e8c\u9032\u5236\u6587\u6a94.\u53ef\u5206\u70ba\u4ee5\u4e0b\u5e7e\u500b\u90e8\u9a5f.<\/p>\n

    \n
  1. \u5f9e\u78c1\u76e4\u4e0a\u7684\u6a21\u578b\u6587\u6a94\u4e2d\u8f09\u5165\u6a21\u578b\u7684\u9802\u9ede\u6578\u64da.<\/li>\n
  2. \u5c07\u9802\u9ede\u6578\u64da\u5132\u5b58\u5728\u6578\u7d44(array),\u5982\u5c07\u9802\u9ede\u5ea7\u6a19\u5b58\u5165\u7368\u7acb\u6578\u7d44,\u6cd5\u7dda\u6578\u7d44,\u984f\u8272\u6578\u7d44.<\/li>\n
  3. \u7576OpenGL\u9700\u8981\u9802\u9ede\u6578\u64da\u6642,\u8f09\u5165\u76f8\u61c9\u7684\u6578\u64da.<\/li>\n<\/ol>\n

     <\/p>\n

    \u555f\u7528\u300e\u9802\u9ede\u6578\u7d44\u300f<\/p>\n

    void glEnableClientState(GLenum array);<\/p>\n

    \u7981\u7528\u300e\u9802\u9ede\u6578\u7d44\u300f<\/p>\n

    void glDisableClientState(GLenum array);<\/p>\n\n\n\n\n\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    GL_COLOR_ARRAY<\/strong><\/td>\n\u555f\u7528\u9802\u9ede\u984f\u8272\u6578\u7d44<\/td>\n<\/tr>\n
    GL_EDGE_FLAG_ARRAY<\/strong><\/td>\n\u555f\u7528\u9802\u9ede\u7684\u908aEdgeFlag\u6578\u7d44<\/td>\n<\/tr>\n
    GL_INDEX_ARRAY<\/strong><\/td>\n\u555f\u7528\u9802\u9ede\u7684\u8abf\u8272\u677f\u7d22\u5f15\u6578\u7d44<\/td>\n<\/tr>\n
    GL_NORMAL_ARRAY<\/strong><\/td>\n\u555f\u7528\u6cd5\u7dda\u6578\u7d44<\/td>\n<\/tr>\n
    GL_TEXTURE_COORD_ARRAY<\/strong><\/td>\n\u555f\u7528\u7d0b\u7406\u5ea7\u6a19\u6578\u7d44<\/td>\n<\/tr>\n
    GL_VERTEX_ARRAY<\/strong><\/td>\n\u555f\u7528\u5b9a\u9ede\u5ea7\u6a19\u6578\u7d44<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n

    \u8f09\u5165\u9802\u9ede\u7684\u984f\u8272\u6578\u7d44:<\/p>\n

    void glVertexPointer(GLint size,GLenum type,GLsizei stride,const GLvoid \u00a0*pointer);<\/p>\n\n\n\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    size<\/td>\n\u9802\u9ede\u984f\u8272\u5206\u91cf\u5176\u503c\u53ea\u80fd\u70ba3(rgb)\u62164(rgba)<\/td>\n<\/tr>\n
    type<\/td>\n\u6578\u7d44\u7684\u6578\u64da\u985e\u578b<\/p>\n

    GL_BYTE<\/p>\n

    GL_UNSIGNED_BYTE<\/p>\n

    GL_SHORT<\/p>\n

    GL_UNSIGNED_SHORT<\/p>\n

    GL_INT<\/p>\n

    GL_UNSIGNED_INT<\/p>\n

    GL_FLOAT<\/p>\n

    GL_DOUBLE<\/td>\n<\/tr>\n

    stride<\/td>\n\u8de8\u5ea6,\u5169\u500b\u984f\u8272\u4e4b\u9593\u7684\u5b57\u7bc0\u6578,\u5982\u679c\u984f\u8272\u6578\u64da\u662f\u7dca\u6e4a\u5247\u586b\u70ba0<\/td>\n<\/tr>\n
    pointer<\/td>\n\u9802\u9ede\u7684\u984f\u8272\u6578\u7d44<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n

    \u8f09\u5165\u908a(Edge)\u6578\u7d44\uff1a<\/p>\n

    void glEdgeFlagPointer(GLsizei stride,const GLvoid *pointer);<\/p>\n\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    stride<\/td>\n\u8de8\u5ea6<\/td>\n<\/tr>\n
    pointer<\/td>\n\u591a\u908a\u5f62\u908a(Edge)\u6578\u7d44bool\u985e\u578b\u6578\u503c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n

    \u8f09\u5165\u8abf\u8272\u677f\u984f\u8272\u7d22\u5f15\u6578\u7d44<\/p>\n

    void glIndexPointer(GLenum type,GLsizei stride,const GLvoid\u00a0*pointer);<\/p>\n\n\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    type<\/td>\n\u6578\u7d44\u7684\u6578\u64da\u985e\u578b<\/p>\n

    GL_SHORT<\/p>\n

    GL_INT<\/p>\n

    GL_FLOAT<\/p>\n

    GL_DOUBLE<\/td>\n<\/tr>\n

    stride<\/td>\n\u8de8\u5ea6\u76f8\u9130\u7d22\u5f15\u4e4b\u9593\u7684\u5b57\u7bc0\u6578<\/td>\n<\/tr>\n
    pointer<\/td>\n\u8abf\u8272\u677f\u984f\u8272\u7d22\u5f15\u6578\u7d44<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n

    \u8f09\u5165\u9802\u9ede\u7684\u6cd5\u7dda\u5411\u91cf,\u6bcf\u4e09\u500b\u5143\u7d20\u7d44\u6210\u4e00\u500b\u6cd5\u7dda\u5411\u91cf<\/p>\n

    void glNormalPointer(GLenum type,GLsizei stride,const GLvoid\u00a0*pointer);<\/p>\n\n\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    type<\/td>\n\u6578\u7d44\u7684\u6578\u64da\u985e\u578b<\/p>\n

    GL_BYTE<\/p>\n

    GL_SHORT<\/p>\n

    GL_INT<\/p>\n

    GL_FLOAT<\/p>\n

    GL_DOUBLE<\/td>\n<\/tr>\n

    stride<\/td>\n\u8de8\u5ea6\u76f8\u9130\u6cd5\u7dda\u4e4b\u9593\u7684\u5b57\u7bc0\u6578<\/td>\n<\/tr>\n
    pointer<\/td>\n\u9802\u9ede\u7684\u6cd5\u7dda\u5411\u91cf\u6578\u7d44<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u8f09\u5165\u9802\u9ede\u7684\u7d0b\u7406\u5ea7\u6a19\u6578\u7d44void glTexCoordPointer(Glint size,GLenum type,GLsizei stride,const GLvoid \u00a0*pointer);<\/p>\n\n\n\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    size<\/td>\n\u9802\u9ede\u7684\u5ea7\u6a19\u6578,\u5176\u503c\u53ea\u80fd\u70ba1,2,3,4<\/p>\n

    1\u70ba1\u7dad\u7d0b\u7406(s)<\/p>\n

    2\u70ba2\u7dad\u7d0b\u7406(s,t)<\/p>\n

    3\u82074\u8f03\u5c0f\u4f7f\u7528<\/td>\n<\/tr>\n

    type<\/td>\n\u6578\u7d44\u7684\u6578\u64da\u985e\u578b<\/p>\n

    GL_SHORT<\/p>\n

    GL_INT<\/p>\n

    GL_FLOAT<\/p>\n

    GL_DOUBLE<\/td>\n<\/tr>\n

    stride<\/td>\n\u8de8\u5ea6,\u5169\u500b\u7d0b\u7406\u4e4b\u9593\u7684\u5b57\u7bc0\u6578<\/td>\n<\/tr>\n
    pointer<\/td>\n\u9802\u9ede\u7d0b\u7406\u5ea7\u6a19\u6578\u7d44<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n

    \u8f09\u5165\u9802\u9ede\u5ea7\u6a19\u6578\u7d44:<\/p>\n

    void glVertexPointer(Glint size,GLenum type,GLsizei stride,const GLvoid *pointer);<\/p>\n\n\n\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    size<\/td>\n\u9802\u9ede\u7684\u5ea7\u6a19\u5206\u91cf:2,3,4<\/td>\n<\/tr>\n
    type<\/td>\n\u6578\u7d44\u7684\u6578\u64da\u985e\u578b<\/p>\n

    GL_SHORT<\/p>\n

    GL_INT<\/p>\n

    GL_FLOAT<\/p>\n

    GL_DOUBLE<\/td>\n<\/tr>\n

    stride<\/td>\n\u8de8\u5ea6,\u5169\u500b\u9802\u9ede\u5ea7\u6a19\u4e4b\u9593\u7684\u5b57\u7bc0\u6578,\u5982\u679c\u662f\u7dca\u6e4a\u65b9\u7f6e\u5176\u503c\u70ba0<\/td>\n<\/tr>\n
    pointer<\/td>\n\u9802\u9ede\u5ea7\u6a19\u6578\u7d44<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u7e6a\u756b\u6240\u6709\u7576\u524d\u4ee5\u555f\u7528\u7684\u9802\u9ede\u6578\u7d44void glDrawArrays(GLenum mode,GLint first,GLsizei count);<\/p>\n\n\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    mode<\/td>\nGL_POINTS:\u9ede<\/p>\n

    GL_LINE_STRIP:\u76f8\u9023\u7684\u76f4\u7dda<\/p>\n

    GL_LINE_LOOP:\u9589\u5408\u7684\u76f8\u9023\u76f4\u7dda<\/p>\n

    GL_LINES:\u975e\u76f8\u9023\u7684\u76f4\u7dda<\/p>\n

    GL_TRIANGLE_STRIP:\u76f8\u9023\u7684\u4e09\u89d2\u5f62 GL_TRIANGLE_FAN:\u5171\u7528\u9802\u9ede\u4e09\u89d2\u5f62<\/p>\n

    GL_TRIANGLES:\u5ea6\u7acb\u7684\u4e09\u89d2\u5f62<\/p>\n

    GL_QUAD_STRIP:\u76f8\u9023\u7684\u56db\u908a\u5f62<\/p>\n

    GL_QUADS:\u56db\u908a\u5f62<\/p>\n

    GL_POLYGON:\u4efb\u610f\u9802\u9ede\u591a\u908a\u5f62<\/td>\n<\/tr>\n

    first<\/td>\n\u6578\u7d44\u8d77\u6b64\u7d22\u5f15<\/td>\n<\/tr>\n
    count<\/td>\n\u7e6a\u756b\u7684\u9802\u9ede\u91cf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

     <\/p>\n

    \u4ee5\u4efb\u610f\u9806\u5e8f\u7e6a\u756b\u4ee5\u555f\u7528\u7684\u9802\u9ede\u6578\u7d44void glDrawElements(GLenum mode,GLsizei count,GLenum type,const GLvoid *indices);<\/p>\n\n\n\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    mode<\/td>\n\u8207glDrawArrays()\u7684\u4e00\u81f4<\/td>\n<\/tr>\n
    count<\/td>\n\u7d22\u5f15\u6578\u7d44\u7684\u9577\u5ea6<\/td>\n<\/tr>\n
    type<\/td>\n\u7d22\u5f15\u7684\u6578\u64da\u985e\u578b,\u53ea\u80fd\u662f\u7121\u7b26\u865f\u6574\u6578GL_UNSIGNED_BYTE GL_UNSIGNED_SHORT GL_UNSIGNED_INT<\/td>\n<\/tr>\n
    indices:<\/td>\n\u7d22\u5f15\u6578\u7d44<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u6309\u503c\u5b9a\u7684\u7bc4\u570d\u7e6a\u756b\u4ee5\u555f\u7528\u7684\u9802\u9ede\u6578\u7d44<\/p>\n

    void glDrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);<\/p>\n\n\n\n\n\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    mode<\/td>\n\u8207glDrawArrays()\u7684\u4e00\u81f4<\/td>\n<\/tr>\n
    start<\/td>\n\u7d22\u5f15\u6578\u7d44\u958b\u6b64\u7d22\u5f15<\/td>\n<\/tr>\n
    end<\/td>\n\u7d22\u5f15\u6578\u7d44\u7d50\u675f\u7d22\u5f15<\/td>\n<\/tr>\n
    count<\/td>\n\u7d22\u5f15\u6578\u7d44\u7684\u9577\u5ea6<\/td>\n<\/tr>\n
    type<\/td>\n\u7d22\u5f15\u7684\u6578\u64da\u985e\u578b,\u53ea\u80fd\u662f\u7121\u7b26\u865f\u6574\u6578\u8207glDrawElements()\u7684\u4e00\u81f4<\/td>\n<\/tr>\n
    indices:<\/td>\n\u7d22\u5f15\u6578\u7d44<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u6309\u6578\u7d44\u7d22\u5f15\u7e6a\u756b\u55ae\u4e00\u500b\u9802\u9edevoid glArrayElement(GLint index);<\/p>\n\n\n\n\n
    \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
    index<\/td>\n\u9802\u9ede\u7684\u7d22\u5f15<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u6f14\u793a\u7a0b\u5f0f\u4e2d\u7e6a\u756b\u5e7e\u767e\u500b\u7403\u9ad4\u4e0d\u65b7\u79fb\u52d5,\u82e5\u4e0d\u4f7f\u7528\u9802\u9ede\u6578\u7d44\u6bcf\u79d2\u53ea\u6709\u7d0466\u5e40,\u800c\u82e5\u4f7f\u7528\u9802\u9ede\u6578\u7d44\u6027\u80fd\u5927\u5e45\u5ea6\u63d0\u5347\u5230\u6bcf\u79d2\u6709200\u5e40.\u6027\u80fd\u6709\u9a5a\u4eba\u7684\u63d0\u5347(\u4e0d\u540c\u7684\u8a08\u7b97\u6a5f\u6027\u80fd\u6709\u6240\u5dee\u5225).\u6309\u7a7a\u683c\u9375\u555f\u7528\u6216\u7981\u7528\u9802\u9ede\u6578\u7d44.\u6f14\u793a\u7a0b\u5f0f\u4e0b\u8f09<\/a>:<\/p>\n

     <\/p>\n","protected":false},"excerpt":{"rendered":"

    \u904a\u6232\u7684\u5be6\u969b\u7684\u958b\u767c\u4e2d\u5c07\u6703\u5927\u91cf\u983b\u7e41\u5730\u8655\u7406\u9802\u9ede,\u5728\u7c21\u55ae\u591a\u908a\u5f62\u53ef\u4ee5\u4f7f\u7528\u4ee3\u78bc\u76f4\u63a5\u751f\u6210\u6a21\u578b\u9802\u9ede.\u800c\u771f\u6b63\u7684\u904a\u6232\u96a8\u4fbf\u4e00\u500b\u6a21\u578b\u5c31 … <\/p>\n

    \u7e7c\u7e8c\u95b1\u8b80 OpenGL\u9802\u9ede\u6578\u7d44<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62],"tags":[50],"class_list":["post-3933","post","type-post","status-publish","format-standard","hentry","category-opengl","tag-opengl","entry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3933","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/comments?post=3933"}],"version-history":[{"count":3,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3933\/revisions"}],"predecessor-version":[{"id":3938,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/3933\/revisions\/3938"}],"wp:attachment":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/media?parent=3933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/categories?post=3933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/tags?post=3933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}