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