ARM Launches v.4.2 of the Offline Shader Compiler
This latest version is capable of compiling OpenGL ES 3.0 shaders and supporting the Mali-T600 series r3p0-00rel0 driver.
For example, the new Mali GPU Offline Shader Compiler can be used to get statistics for the shaders in the Skybox tutorial:
For the vertex shader, saved on disk as skybox.vert:
#version 300 es
out vec3 texCoord;
uniform mat4 viewMat;
void main(void)
{
const vec3 vertices[4] = vec3[4](vec3(-1.0f, -1.0f, 1.0f), vec3( 1.0f, -1.0f, 1.0f), vec3(-1.0f, 1.0f, 1.0f), vec3( 1.0f, 1.0f, 1.0f)); texCoord = mat3(viewMat) * vertices[gl_VertexID]; gl_Position = vec4(vertices[gl_VertexID], 1.0f);
}We can run the compiler in verbose mode:
malisc -v skybox.vert -V A
And we will get the following output:
ARM Mali Offline Shader Compiler v4.2.0
(C) Copyright 2007-2014 ARM Limited.
All rights reserved.
No driver specified, using "Mali-T600_r3p0-00rel0" as default.
No core specified, using "Mali-T670" as default.
No core revision specified, using "r1p0" as default.
Compilation successful. 3 work registers used, 6 uniform registers used, spilling not used.
A L/S T Total Bound Cycles: 9 9 0 18 A, L/S
Shortest Path: 2 9 0 11 L/S
Longest Path: 2 9 0 11 L/S
Note: The cycles counts do not include possible stalls due to cache misses.
For more information, visit the tool page.
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