1 files changed, 121 insertions, 0 deletions

diff --git a/linden/indra/llrender/llvertexprogramgl.cpp b/linden/indra/llrender/llvertexprogramgl.cpp
new file mode 100644
index 0000000..bc00a64
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+++ b/linden/indra/llrender/llvertexprogramgl.cpp
@@ -0,0 +1,121 @@
+/** 
+ * @file llvertexprogramgl.cpp
+ * @brief LLVertexProgramGL base class
+ *
+ * Copyright (c) 2003-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+// This file contains the definition of LLVertexProgramGL, 
+// for purposes of running vertex programs on GL hardware.
+
+#include "linden_common.h"
+
+#include "llvertexprogramgl.h"
+
+#include "llglheaders.h"
+
+LLVertexProgramGL::LLVertexProgramGL()
+{
+        mVertexProgramID = 0;
+}
+
+LLVertexProgramGL::~LLVertexProgramGL()
+{
+        glDeleteProgramsARB(1, (GLuint*) &mVertexProgramID);
+}
+
+BOOL LLVertexProgramGL::load(const char * filename)
+{
+        FILE *fp = fopen(filename, "r");
+        if (!fp)
+        {
+                llwarns << "Unable to open vertex program " << filename << llendl;
+                return FALSE;
+        }
+
+        fseek(fp,0,SEEK_END);
+        S32 file_size = ftell(fp);
+        fseek(fp,0,SEEK_SET);
+
+        char *text_buffer = new char[file_size + 1];
+
+        S32 num_read = (S32)fread(text_buffer, sizeof(char), file_size, fp);
+
+        if (ferror(fp) || num_read == 0)
+        {
+                llwarns << "Unable to read vertex program " << filename << llendl;
+                fclose(fp);
+                delete[] text_buffer;
+                return FALSE;
+        }
+        text_buffer[num_read] = '\0';
+        fclose(fp);
+
+        //Send program string to OpenGL
+        glGenProgramsARB(1, (GLuint*) &mVertexProgramID);
+        glBindProgramARB(GL_VERTEX_PROGRAM_ARB, mVertexProgramID);
+        glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, num_read, text_buffer);
+
+        const GLubyte * program_error_string = glGetString(GL_PROGRAM_ERROR_STRING_ARB);
+
+        GLint error_pos;
+        glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &error_pos);
+
+        if(error_pos!=-1)
+        {
+                glGetError();
+                S32 line_num = 1;
+                char *next_token = strchr(text_buffer, '\n');
+                while(NULL != next_token && next_token < (text_buffer + error_pos))
+                {
+                        next_token++;
+                        line_num++;
+                        next_token = strchr(next_token, '\n');
+                } 
+                char output[1024];
+                char bad_code[11];
+                strncpy(bad_code, text_buffer + error_pos, 10);
+                bad_code[10] = '\0';
+
+                sprintf(output, "%s(%d): Vertex Program Error: %s at (%s)\n", filename, line_num, program_error_string, bad_code);
+                gErrorStream << output << std::endl;
+                // clean up buffer
+                delete[] text_buffer;
+                return FALSE;
+        }
+
+        // clean up buffer
+        delete[] text_buffer;
+        return TRUE;
+}
+
+void LLVertexProgramGL::bind()
+{
+        glEnable(GL_VERTEX_PROGRAM_ARB);
+        glBindProgramARB(GL_VERTEX_PROGRAM_ARB, mVertexProgramID);
+}
+
+void LLVertexProgramGL::unbind()
+{
+        glDisable(GL_VERTEX_PROGRAM_ARB);
+}