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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/mfeatures.h"
     28 #include "main/mtypes.h"
     29 
     30 
     31 #if FEATURE_OES_draw_texture
     32 
     33 
     34 static void
     35 draw_texture(struct gl_context *ctx, GLfloat x, GLfloat y, GLfloat z,
     36              GLfloat width, GLfloat height)
     37 {
     38    if (!ctx->Extensions.OES_draw_texture) {
     39       _mesa_error(ctx, GL_INVALID_OPERATION,
     40                   "glDrawTex(unsupported)");
     41       return;
     42    }
     43    if (width <= 0.0f || height <= 0.0f) {
     44       _mesa_error(ctx, GL_INVALID_VALUE, "glDrawTex(width or height <= 0)");
     45       return;
     46    }
     47 
     48    _mesa_set_vp_override(ctx, GL_TRUE);
     49 
     50    if (ctx->NewState)
     51       _mesa_update_state(ctx);
     52 
     53    ASSERT(ctx->Driver.DrawTex);
     54    ctx->Driver.DrawTex(ctx, x, y, z, width, height);
     55 
     56    _mesa_set_vp_override(ctx, GL_FALSE);
     57 }
     58 
     59 
     60 void GLAPIENTRY
     61 _mesa_DrawTexf(GLfloat x, GLfloat y, GLfloat z, GLfloat width, GLfloat height)
     62 {
     63    GET_CURRENT_CONTEXT(ctx);
     64    draw_texture(ctx, x, y, z, width, height);
     65 }
     66 
     67 
     68 void GLAPIENTRY
     69 _mesa_DrawTexfv(const GLfloat *coords)
     70 {
     71    GET_CURRENT_CONTEXT(ctx);
     72    draw_texture(ctx, coords[0], coords[1], coords[2], coords[3], coords[4]);
     73 }
     74 
     75 
     76 void GLAPIENTRY
     77 _mesa_DrawTexi(GLint x, GLint y, GLint z, GLint width, GLint height)
     78 {
     79    GET_CURRENT_CONTEXT(ctx);
     80    draw_texture(ctx, (GLfloat) x, (GLfloat) y, (GLfloat) z,
     81                 (GLfloat) width, (GLfloat) height);
     82 }
     83 
     84 
     85 void GLAPIENTRY
     86 _mesa_DrawTexiv(const GLint *coords)
     87 {
     88    GET_CURRENT_CONTEXT(ctx);
     89    draw_texture(ctx, (GLfloat) coords[0], (GLfloat) coords[1],
     90                 (GLfloat) coords[2], (GLfloat) coords[3], (GLfloat) coords[4]);
     91 }
     92 
     93 
     94 void GLAPIENTRY
     95 _mesa_DrawTexs(GLshort x, GLshort y, GLshort z, GLshort width, GLshort height)
     96 {
     97    GET_CURRENT_CONTEXT(ctx);
     98    draw_texture(ctx, (GLfloat) x, (GLfloat) y, (GLfloat) z,
     99                 (GLfloat) width, (GLfloat) height);
    100 }
    101 
    102 
    103 void GLAPIENTRY
    104 _mesa_DrawTexsv(const GLshort *coords)
    105 {
    106    GET_CURRENT_CONTEXT(ctx);
    107    draw_texture(ctx, (GLfloat) coords[0], (GLfloat) coords[1],
    108                 (GLfloat) coords[2], (GLfloat) coords[3], (GLfloat) coords[4]);
    109 }
    110 
    111 
    112 void GLAPIENTRY
    113 _mesa_DrawTexx(GLfixed x, GLfixed y, GLfixed z, GLfixed width, GLfixed height)
    114 {
    115    GET_CURRENT_CONTEXT(ctx);
    116    draw_texture(ctx,
    117                 (GLfloat) x / 65536.0f,
    118                 (GLfloat) y / 65536.0f,
    119                 (GLfloat) z / 65536.0f,
    120                 (GLfloat) width / 65536.0f,
    121                 (GLfloat) height / 65536.0f);
    122 }
    123 
    124 
    125 void GLAPIENTRY
    126 _mesa_DrawTexxv(const GLfixed *coords)
    127 {
    128    GET_CURRENT_CONTEXT(ctx);
    129    draw_texture(ctx,
    130                 (GLfloat) coords[0] / 65536.0f,
    131                 (GLfloat) coords[1] / 65536.0f,
    132                 (GLfloat) coords[2] / 65536.0f,
    133                 (GLfloat) coords[3] / 65536.0f,
    134                 (GLfloat) coords[4] / 65536.0f);
    135 }
    136 
    137 #endif /* FEATURE_OES_draw_texture */
    138