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| -rw-r--r-- | docs/shading.html | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/docs/shading.html b/docs/shading.html index 0e1a5e1a7bc..aaffe9635dd 100644 --- a/docs/shading.html +++ b/docs/shading.html @@ -15,13 +15,14 @@ OpenGL Shading Language</a>. </p> <p> -Last updated on 28 March 2007. +Last updated on 15 December 2008. </p> <p> Contents </p> <ul> +<li><a href="#120">GLSL 1.20 support</a> <li><a href="#unsup">Unsupported Features</a> <li><a href="#notes">Implementation Notes</a> <li><a href="#hints">Programming Hints</a> @@ -31,6 +32,29 @@ Contents </ul> + +<a name="120"> +<h2>GLSL 1.20 support</h2> + +<p> +GLSL version 1.20 is supported in Mesa 7.3. +Among the features/differences of GLSL 1.20 are: +<ul> +<li><code>mat2x3, mat2x4</code>, etc. types and functions +<li><code>transpose(), outerProduct(), matrixCompMult()</code> functions +(but untested) +<li>precision qualifiers (lowp, mediump, highp) +<li><code>invariant</code> qualifier +<li><code>array.length()</code> method +<li><code>float[5] a;</code> array syntax +<li><code>centroid</code> qualifier +<li>unsized array constructors +<li>initializers for uniforms +<li>const initializers calling built-in functions +</ul> + + + <a name="unsup"> <h2>Unsupported Features</h2> @@ -40,12 +64,8 @@ in Mesa: </p> <ul> -<li>Dereferencing arrays with non-constant indexes -<li>Comparison of user-defined structs <li>Linking of multiple shaders is not supported <li>gl_ClipVertex -<li>The derivative functions such as dFdx() are not implemented -<li>The inverse trig functions asin(), acos(), and atan() are not implemented <li>The gl_Color and gl_SecondaryColor varying vars are interpolated without perspective correction </ul> @@ -293,11 +313,11 @@ Extra NOP instructions will also be inserted. <h2>Compiler Validation</h2> <p> -A new <a href="http://glean.sf.net" target="_parent">Glean</a> test has +A <a href="http://glean.sf.net" target="_parent">Glean</a> test has been create to exercise the GLSL compiler. </p> <p> -The <em>glsl1</em> test runs over 150 sub-tests to check that the language +The <em>glsl1</em> test runs over 170 sub-tests to check that the language features and built-in functions work properly. This test should be run frequently while working on the compiler to catch regressions. |