static inline GLuint
_glDrawElementsBaseVertex_count(GLsizei count, GLenum type, const GLvoid *indices, GLint basevertex)
{
GLvoid *temp = 0;
if (!count) {
return 0;
}
GLint element_array_buffer = _element_array_buffer_binding();
if (element_array_buffer) {
// Read indices from index buffer object
GLintptr offset = (GLintptr)indices;
GLsizeiptr size = count*_gl_type_size(type);
temp = malloc(size);
if (!temp) {
return 0;
}
memset(temp, 0, size);
_shadow_glGetBufferSubData(GL_ELEMENT_ARRAY_BUFFER, offset, size, temp);
indices = temp;
} else {
if (!indices) {
return 0;
}
}
GLuint maxindex = 0;
GLboolean restart_enabled = _glIsEnabled(GL_PRIMITIVE_RESTART);
while ((_glGetError() == GL_INVALID_ENUM))
;
GLuint restart_index = 0;
if (restart_enabled) {
restart_index = (GLuint)_glGetInteger(GL_PRIMITIVE_RESTART_INDEX);
}
GLsizei i;
if (type == GL_UNSIGNED_BYTE) {
const GLubyte *p = (const GLubyte *)indices;
for (i = 0; i < count; ++i) {
GLuint index = p[i];
if (restart_enabled && index == restart_index) {
continue;
}
if (index > maxindex) {
maxindex = index;
}
}
} else if (type == GL_UNSIGNED_SHORT) {
const GLushort *p = (const GLushort *)indices;
for (i = 0; i < count; ++i) {
GLuint index = p[i];
if (restart_enabled && index == restart_index) {
continue;
}
if (index > maxindex) {
maxindex = index;
}
}
} else if (type == GL_UNSIGNED_INT) {
const GLuint *p = (const GLuint *)indices;
for (i = 0; i < count; ++i) {
GLuint index = p[i];
if (restart_enabled && index == restart_index) {
continue;
}
if (index > maxindex) {
maxindex = index;
}
}
} else {
os::log("apitrace: warning: %s: unknown GLenum 0x%04X\n", __FUNCTION__, type);
}
if (element_array_buffer) {
free(temp);
}
maxindex += basevertex;
return maxindex + 1;
}
static inline GLuint
_glDrawElementsBaseVertex_count(GLsizei count, GLenum type, const GLvoid *indices, GLint basevertex)
{
GLvoid *temp = 0;
if (!count) {
return 0;
}
GLint element_array_buffer = _element_array_buffer_binding();
if (element_array_buffer) {
// Read indices from index buffer object
GLintptr offset = (GLintptr)indices;
GLsizeiptr size = count*_gl_type_size(type);
GLvoid *temp = malloc(size);
if (!temp) {
return 0;
}
memset(temp, 0, size);
_shadow_glGetBufferSubData(GL_ELEMENT_ARRAY_BUFFER, offset, size, temp);
indices = temp;
} else {
if (!indices) {
return 0;
}
}
GLuint maxindex = 0;
GLsizei i;
if (type == GL_UNSIGNED_BYTE) {
const GLubyte *p = (const GLubyte *)indices;
for (i = 0; i < count; ++i) {
if (p[i] > maxindex) {
maxindex = p[i];
}
}
} else if (type == GL_UNSIGNED_SHORT) {
const GLushort *p = (const GLushort *)indices;
for (i = 0; i < count; ++i) {
if (p[i] > maxindex) {
maxindex = p[i];
}
}
} else if (type == GL_UNSIGNED_INT) {
const GLuint *p = (const GLuint *)indices;
for (i = 0; i < count; ++i) {
if (p[i] > maxindex) {
maxindex = p[i];
}
}
} else {
os::log("apitrace: warning: %s: unknown GLenum 0x%04X\n", __FUNCTION__, type);
}
if (element_array_buffer) {
free(temp);
}
maxindex += basevertex;
return maxindex + 1;
}
