src/mesa/main/drawtex.c

   1 /*
   2  * Copyright (C) 2009 Chia-I Wu <olv@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
  28
  29 #if FEATURE_OES_draw_texture
  30
  31
  32 static void
  33 draw_texture(GLcontext *ctx, GLfloat x, GLfloat y, GLfloat z,
  34              GLfloat width, GLfloat height)
  35 {
  36    if (!ctx->Extensions.OES_draw_texture) {
  37       _mesa_error(ctx, GL_INVALID_OPERATION,
  38                   "glDrawTex(unsupported)");
  39       return;
  40    }
  41    if (width <= 0.0f || height <= 0.0f) {
  42       _mesa_error(ctx, GL_INVALID_VALUE, "glDrawTex(width or height <= 0)");
  43       return;
  44    }
  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
  53
  54 void GLAPIENTRY
  55 _mesa_DrawTexf(GLfloat x, GLfloat y, GLfloat z, GLfloat width, GLfloat height)
  56 {
  57    GET_CURRENT_CONTEXT(ctx);
  58    draw_texture(ctx, x, y, z, width, height);
  59 }
  60
  61
  62 void GLAPIENTRY
  63 _mesa_DrawTexfv(const GLfloat *coords)
  64 {
  65    GET_CURRENT_CONTEXT(ctx);
  66    draw_texture(ctx, coords[0], coords[1], coords[2], coords[3], coords[4]);
  67 }
  68
  69
  70 void GLAPIENTRY
  71 _mesa_DrawTexi(GLint x, GLint y, GLint z, GLint width, GLint height)
  72 {
  73    GET_CURRENT_CONTEXT(ctx);
  74    draw_texture(ctx, (GLfloat) x, (GLfloat) y, (GLfloat) z,
  75                 (GLfloat) width, (GLfloat) height);
  76 }
  77
  78
  79 void GLAPIENTRY
  80 _mesa_DrawTexiv(const GLint *coords)
  81 {
  82    GET_CURRENT_CONTEXT(ctx);
  83    draw_texture(ctx, (GLfloat) coords[0], (GLfloat) coords[1],
  84                 (GLfloat) coords[2], (GLfloat) coords[3], (GLfloat) coords[4]);
  85 }
  86
  87
  88 void GLAPIENTRY
  89 _mesa_DrawTexs(GLshort x, GLshort y, GLshort z, GLshort width, GLshort height)
  90 {
  91    GET_CURRENT_CONTEXT(ctx);
  92    draw_texture(ctx, (GLfloat) x, (GLfloat) y, (GLfloat) z,
  93                 (GLfloat) width, (GLfloat) height);
  94 }
  95
  96
  97 void GLAPIENTRY
  98 _mesa_DrawTexsv(const GLshort *coords)
  99 {
 100    GET_CURRENT_CONTEXT(ctx);
 101    draw_texture(ctx, (GLfloat) coords[0], (GLfloat) coords[1],
 102                 (GLfloat) coords[2], (GLfloat) coords[3], (GLfloat) coords[4]);
 103 }
 104
 105
 106 void GLAPIENTRY
 107 _mesa_DrawTexx(GLfixed x, GLfixed y, GLfixed z, GLfixed width, GLfixed height)
 108 {
 109    GET_CURRENT_CONTEXT(ctx);
 110    draw_texture(ctx,
 111                 (GLfloat) x / 65536.0f,
 112                 (GLfloat) y / 65536.0f,
 113                 (GLfloat) z / 65536.0f,
 114                 (GLfloat) width / 65536.0f,
 115                 (GLfloat) height / 65536.0f);
 116 }
 117
 118
 119 void GLAPIENTRY
 120 _mesa_DrawTexxv(const GLfixed *coords)
 121 {
 122    GET_CURRENT_CONTEXT(ctx);
 123    draw_texture(ctx,
 124                 (GLfloat) coords[0] / 65536.0f,
 125                 (GLfloat) coords[1] / 65536.0f,
 126                 (GLfloat) coords[2] / 65536.0f,
 127                 (GLfloat) coords[3] / 65536.0f,
 128                 (GLfloat) coords[4] / 65536.0f);
 129 }
 130
 131 #endif /* FEATURE_OES_draw_texture */