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 #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 }