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      1 /*
      2  * Copyright (C) 2009 Chia-I Wu <olv (at) 0xlab.org>
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the next
     12  * paragraph) shall be included in all copies or substantial portions of the
     13  * Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     21  * DEALINGS IN THE SOFTWARE.
     22  */
     23 
     24 #include "main/drawtex.h"
     25 #include "main/state.h"
     26 #include "main/imports.h"
     27 #include "main/mtypes.h"
     28 
     29 
     30 static void
     31 draw_texture(struct gl_context *ctx, GLfloat x, GLfloat y, GLfloat z,
     32              GLfloat width, GLfloat height)
     33 {
     34    if (!ctx->Extensions.OES_draw_texture) {
     35       _mesa_error(ctx, GL_INVALID_OPERATION,
     36                   "glDrawTex(unsupported)");
     37       return;
     38    }
     39    if (width <= 0.0f || height <= 0.0f) {
     40       _mesa_error(ctx, GL_INVALID_VALUE, "glDrawTex(width or height <= 0)");
     41       return;
     42    }
     43 
     44    _mesa_set_vp_override(ctx, GL_TRUE);
     45 
     46    if (ctx->NewState)
     47       _mesa_update_state(ctx);
     48 
     49    assert(ctx->Driver.DrawTex);
     50    ctx->Driver.DrawTex(ctx, x, y, z, width, height);
     51 
     52    _mesa_set_vp_override(ctx, GL_FALSE);
     53 }
     54 
     55 
     56 void GLAPIENTRY
     57 _mesa_DrawTexfOES(GLfloat x, GLfloat y, GLfloat z, GLfloat width, GLfloat height)
     58 {
     59    GET_CURRENT_CONTEXT(ctx);
     60    draw_texture(ctx, x, y, z, width, height);
     61 }
     62 
     63 
     64 void GLAPIENTRY
     65 _mesa_DrawTexfvOES(const GLfloat *coords)
     66 {
     67    GET_CURRENT_CONTEXT(ctx);
     68    draw_texture(ctx, coords[0], coords[1], coords[2], coords[3], coords[4]);
     69 }
     70 
     71 
     72 void GLAPIENTRY
     73 _mesa_DrawTexiOES(GLint x, GLint y, GLint z, GLint width, GLint height)
     74 {
     75    GET_CURRENT_CONTEXT(ctx);
     76    draw_texture(ctx, (GLfloat) x, (GLfloat) y, (GLfloat) z,
     77                 (GLfloat) width, (GLfloat) height);
     78 }
     79 
     80 
     81 void GLAPIENTRY
     82 _mesa_DrawTexivOES(const GLint *coords)
     83 {
     84    GET_CURRENT_CONTEXT(ctx);
     85    draw_texture(ctx, (GLfloat) coords[0], (GLfloat) coords[1],
     86                 (GLfloat) coords[2], (GLfloat) coords[3], (GLfloat) coords[4]);
     87 }
     88 
     89 
     90 void GLAPIENTRY
     91 _mesa_DrawTexsOES(GLshort x, GLshort y, GLshort z, GLshort width, GLshort height)
     92 {
     93    GET_CURRENT_CONTEXT(ctx);
     94    draw_texture(ctx, (GLfloat) x, (GLfloat) y, (GLfloat) z,
     95                 (GLfloat) width, (GLfloat) height);
     96 }
     97 
     98 
     99 void GLAPIENTRY
    100 _mesa_DrawTexsvOES(const GLshort *coords)
    101 {
    102    GET_CURRENT_CONTEXT(ctx);
    103    draw_texture(ctx, (GLfloat) coords[0], (GLfloat) coords[1],
    104                 (GLfloat) coords[2], (GLfloat) coords[3], (GLfloat) coords[4]);
    105 }
    106 
    107 
    108 void GLAPIENTRY
    109 _mesa_DrawTexx(GLfixed x, GLfixed y, GLfixed z, GLfixed width, GLfixed height)
    110 {
    111    GET_CURRENT_CONTEXT(ctx);
    112    draw_texture(ctx,
    113                 (GLfloat) x / 65536.0f,
    114                 (GLfloat) y / 65536.0f,
    115                 (GLfloat) z / 65536.0f,
    116                 (GLfloat) width / 65536.0f,
    117                 (GLfloat) height / 65536.0f);
    118 }
    119 
    120 
    121 void GLAPIENTRY
    122 _mesa_DrawTexxv(const GLfixed *coords)
    123 {
    124    GET_CURRENT_CONTEXT(ctx);
    125    draw_texture(ctx,
    126                 (GLfloat) coords[0] / 65536.0f,
    127                 (GLfloat) coords[1] / 65536.0f,
    128                 (GLfloat) coords[2] / 65536.0f,
    129                 (GLfloat) coords[3] / 65536.0f,
    130                 (GLfloat) coords[4] / 65536.0f);
    131 }
    132