| 1 | package CFClient::OpenGL; |
1 | package DC::OpenGL; |
| 2 | |
2 | |
| 3 | use strict; |
3 | use common::sense; |
| 4 | |
4 | |
| 5 | #use CFClient; |
5 | use Carp (); |
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6 | use DC; |
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7 | |
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8 | our %GL_EXT; |
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9 | our $GL_VERSION; |
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10 | |
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11 | our $GL_NPOT; |
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12 | our $GL_COMPRESS; |
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13 | our $GL_BFSEP; # blendfuncseparate |
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14 | our $GL_MULTITEX; |
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15 | our $APPLE_NVIDIA_BUG; |
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16 | |
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17 | our $DEBUG = 1; |
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18 | our %INIT_HOOK; |
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19 | our %SHUTDOWN_HOOK; |
| 6 | |
20 | |
| 7 | sub import { |
21 | sub import { |
| 8 | my $caller = caller; |
22 | my $caller = caller; |
| 9 | |
23 | |
| 10 | no strict; |
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| 11 | |
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| 12 | my $symtab = *{"main::CFClient::OpenGL::"}{HASH}; |
24 | my $symtab = *{"main::DC::OpenGL::"}{HASH}; |
| 13 | |
25 | |
| 14 | for (keys %$symtab) { |
26 | for (keys %$symtab) { |
| 15 | *{"$caller\::$_"} = \&$_ |
27 | *{"$caller\::$_"} = *$_ |
| 16 | if /^(?:gl|GL_)/; |
28 | if /^(?:gl[A-Z_]|GL_)/; |
| 17 | } |
29 | } |
| 18 | } |
30 | } |
| 19 | |
31 | |
| 20 | 1 |
32 | sub init { |
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33 | $GL_VERSION = gl_version * 1; |
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34 | %GL_EXT = map +($_ => 1), split /\s+/, gl_extensions; |
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35 | |
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36 | unless (defined $::CFG->{force_opengl11}) { |
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37 | # try to find a suitable default |
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38 | if ( |
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39 | $GL_VERSION >= 2.0 |
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40 | && (!$GL_EXT{GL_ARB_texture_non_power_of_two} |
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41 | || !$GL_EXT{GL_EXT_blend_func_separate}) |
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42 | ) { |
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43 | $::CFG->{force_opengl11} = 1; |
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44 | } else { |
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45 | $::CFG->{force_opengl11} = 0; |
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46 | } |
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47 | } |
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48 | |
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49 | if ($::CFG->{force_opengl11}) { |
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50 | $GL_VERSION = 1.1; |
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51 | %GL_EXT = (); |
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52 | } |
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53 | |
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54 | $GL_BFSEP = $GL_EXT{GL_EXT_blend_func_separate} || $GL_VERSION >= 2.0; |
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55 | $GL_NPOT = $GL_EXT{GL_ARB_texture_non_power_of_two} || $GL_VERSION >= 2.0; |
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56 | $GL_COMPRESS = $GL_EXT{GL_ARB_texture_compression} || $GL_VERSION >= 1.3; |
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57 | $GL_MULTITEX = $GL_EXT{GL_ARB_multitexture} || $GL_VERSION >= 1.3; |
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58 | $GL_MULTITEX &&= 2 <= glGetInteger GL_MAX_TEXTURE_UNITS; |
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59 | |
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60 | $GL_COMPRESS = 0 if DC::OpenGL::gl_vendor eq "Apple Computer, Inc."; # there is no end to their suckage |
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61 | |
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62 | $APPLE_NVIDIA_BUG = DC::OpenGL::gl_vendor eq "NVIDIA Corporation" && $^O eq "darwin"; |
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63 | apple_nvidia_bug $APPLE_NVIDIA_BUG; |
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64 | |
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65 | disable_GL_EXT_blend_func_separate |
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66 | unless $GL_BFSEP; |
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67 | |
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68 | glDisable GL_COLOR_MATERIAL; |
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69 | glShadeModel GL_FLAT; |
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70 | glDisable GL_DITHER; |
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71 | glDisable GL_DEPTH_TEST; |
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72 | glDepthMask 0; |
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73 | |
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74 | my $hint = $::FAST ? GL_FASTEST : GL_NICEST; |
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75 | glHint GL_PERSPECTIVE_CORRECTION_HINT, $hint; |
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76 | glHint GL_POINT_SMOOTH_HINT , $hint; |
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77 | glHint GL_LINE_SMOOTH_HINT , $hint; |
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78 | glHint GL_POLYGON_SMOOTH_HINT , $hint; |
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79 | glHint GL_GENERATE_MIPMAP_HINT , $hint; |
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80 | glHint GL_TEXTURE_COMPRESSION_HINT , $hint; |
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81 | #glDrawBuffer GL_BACK; |
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82 | #glReadBuffer GL_BACK; |
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83 | |
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84 | c_init; |
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85 | $_->() for values %INIT_HOOK; |
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86 | } |
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87 | |
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88 | sub quit { |
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89 | undef $GL_VERSION; |
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90 | undef %GL_EXT; |
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91 | } |
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92 | |
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93 | sub shutdown { |
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94 | $_->() for values %SHUTDOWN_HOOK; |
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95 | |
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96 | quit; |
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97 | } |
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98 | |
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99 | sub gl_check { |
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100 | return unless $DEBUG; |
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101 | |
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102 | if (my $error = glGetError) { |
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103 | my ($format, @args) = @_; |
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104 | Carp::cluck sprintf "opengl error %x while $format", $error, @args; |
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105 | } |
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106 | } |
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107 | |
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108 | 1; |
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109 | |
