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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "../rwbase.h"
#include "../rwerror.h"
#include "../rwplg.h"
#include "../rwrender.h"
#include "../rwpipeline.h"
#include "../rwobjects.h"
#include "../rwengine.h"
#ifdef RW_OPENGL
#include "rwgl3.h"
#include "rwgl3impl.h"
#include "rwgl3shader.h"
namespace rw {
namespace gl3 {
uint32 im2DVbo, im2DIbo;
#ifdef RW_GL_USE_VAOS
uint32 im2DVao;
#endif
Shader *im2dOverrideShader;
static int32 u_xform;
#define STARTINDICES 10000
#define STARTVERTICES 10000
static Shader *im2dShader;
static AttribDesc im2dattribDesc[3] = {
{ ATTRIB_POS, GL_FLOAT, GL_FALSE, 4,
sizeof(Im2DVertex), 0 },
{ ATTRIB_COLOR, GL_UNSIGNED_BYTE, GL_TRUE, 4,
sizeof(Im2DVertex), offsetof(Im2DVertex, r) },
{ ATTRIB_TEXCOORDS0, GL_FLOAT, GL_FALSE, 2,
sizeof(Im2DVertex), offsetof(Im2DVertex, u) },
};
static int primTypeMap[] = {
GL_POINTS, // invalid
GL_LINES,
GL_LINE_STRIP,
GL_TRIANGLES,
GL_TRIANGLE_STRIP,
GL_TRIANGLE_FAN,
GL_POINTS
};
void
openIm2D(void)
{
// must already be registered by device. we just need the value
u_xform = registerUniform("u_xform", UNIFORM_VEC4);
#include "shaders/im2d_gl.inc"
#include "shaders/simple_fs_gl.inc"
const char *vs[] = { shaderDecl, header_vert_src, im2d_vert_src, nil };
const char *fs[] = { shaderDecl, header_frag_src, simple_frag_src, nil };
im2dShader = Shader::create(vs, fs);
assert(im2dShader);
glGenBuffers(1, &im2DIbo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, im2DIbo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, STARTINDICES*2, nil, GL_STREAM_DRAW);
glGenBuffers(1, &im2DVbo);
glBindBuffer(GL_ARRAY_BUFFER, im2DVbo);
glBufferData(GL_ARRAY_BUFFER, STARTVERTICES*sizeof(Im2DVertex), nil, GL_STREAM_DRAW);
#ifdef RW_GL_USE_VAOS
glGenVertexArrays(1, &im2DVao);
glBindVertexArray(im2DVao);
setAttribPointers(im2dattribDesc, 3);
#endif
}
void
closeIm2D(void)
{
glDeleteBuffers(1, &im2DIbo);
glDeleteBuffers(1, &im2DVbo);
#ifdef RW_GL_USE_VAOS
glDeleteVertexArrays(1, &im2DVao);
#endif
im2dShader->destroy();
im2dShader = nil;
}
static Im2DVertex tmpprimbuf[3];
void
im2DRenderLine(void *vertices, int32 numVertices, int32 vert1, int32 vert2)
{
Im2DVertex *verts = (Im2DVertex*)vertices;
tmpprimbuf[0] = verts[vert1];
tmpprimbuf[1] = verts[vert2];
im2DRenderPrimitive(PRIMTYPELINELIST, tmpprimbuf, 2);
}
void
im2DRenderTriangle(void *vertices, int32 numVertices, int32 vert1, int32 vert2, int32 vert3)
{
Im2DVertex *verts = (Im2DVertex*)vertices;
tmpprimbuf[0] = verts[vert1];
tmpprimbuf[1] = verts[vert2];
tmpprimbuf[2] = verts[vert3];
im2DRenderPrimitive(PRIMTYPETRILIST, tmpprimbuf, 3);
}
void
im2DSetXform(void)
{
GLfloat xform[4];
Camera *cam;
cam = (Camera*)engine->currentCamera;
xform[0] = 2.0f/cam->frameBuffer->width;
xform[1] = -2.0f/cam->frameBuffer->height;
xform[2] = -1.0f;
xform[3] = 1.0f;
setUniform(u_xform, xform);
// glUniform4fv(currentShader->uniformLocations[u_xform], 1, xform);
}
void
im2DRenderPrimitive(PrimitiveType primType, void *vertices, int32 numVertices)
{
#ifdef RW_GL_USE_VAOS
glBindVertexArray(im2DVao);
#endif
glBindBuffer(GL_ARRAY_BUFFER, im2DVbo);
glBufferData(GL_ARRAY_BUFFER, STARTVERTICES*sizeof(Im2DVertex), nil, GL_STREAM_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, numVertices*sizeof(Im2DVertex), vertices);
if(im2dOverrideShader)
im2dOverrideShader->use();
else
im2dShader->use();
#ifndef RW_GL_USE_VAOS
setAttribPointers(im2dattribDesc, 3);
#endif
im2DSetXform();
flushCache();
glDrawArrays(primTypeMap[primType], 0, numVertices);
#ifndef RW_GL_USE_VAOS
disableAttribPointers(im2dattribDesc, 3);
#endif
}
void
im2DRenderIndexedPrimitive(PrimitiveType primType,
void *vertices, int32 numVertices,
void *indices, int32 numIndices)
{
#ifdef RW_GL_USE_VAOS
glBindVertexArray(im2DVao);
#endif
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, im2DIbo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, STARTINDICES*2, nil, GL_STREAM_DRAW);
glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, numIndices*2, indices);
glBindBuffer(GL_ARRAY_BUFFER, im2DVbo);
glBufferData(GL_ARRAY_BUFFER, STARTVERTICES*sizeof(Im2DVertex), nil, GL_STREAM_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, numVertices*sizeof(Im2DVertex), vertices);
if(im2dOverrideShader)
im2dOverrideShader->use();
else
im2dShader->use();
#ifndef RW_GL_USE_VAOS
setAttribPointers(im2dattribDesc, 3);
#endif
im2DSetXform();
flushCache();
glDrawElements(primTypeMap[primType], numIndices,
GL_UNSIGNED_SHORT, nil);
#ifndef RW_GL_USE_VAOS
disableAttribPointers(im2dattribDesc, 3);
#endif
}
// Im3D
static Shader *im3dShader;
static AttribDesc im3dattribDesc[4] = {
{ ATTRIB_POS, GL_FLOAT, GL_FALSE, 3,
sizeof(Im3DVertex), 0 },
{ ATTRIB_NORMAL, GL_FLOAT, GL_FALSE, 3,
sizeof(Im3DVertex), offsetof(Im3DVertex, normal) },
{ ATTRIB_COLOR, GL_UNSIGNED_BYTE, GL_TRUE, 4,
sizeof(Im3DVertex), offsetof(Im3DVertex, r) },
{ ATTRIB_TEXCOORDS0, GL_FLOAT, GL_FALSE, 2,
sizeof(Im3DVertex), offsetof(Im3DVertex, u) },
};
static uint32 im3DVbo, im3DIbo;
#ifdef RW_GL_USE_VAOS
static uint32 im3DVao;
#endif
static int32 num3DVertices; // not actually needed here
void
openIm3D(void)
{
#include "shaders/im3d_gl.inc"
#include "shaders/simple_fs_gl.inc"
const char *vs[] = { shaderDecl, header_vert_src, im3d_vert_src, nil };
const char *fs[] = { shaderDecl, header_frag_src, simple_frag_src, nil };
im3dShader = Shader::create(vs, fs);
assert(im3dShader);
glGenBuffers(1, &im3DIbo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, im3DIbo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, STARTINDICES*2, nil, GL_STREAM_DRAW);
glGenBuffers(1, &im3DVbo);
glBindBuffer(GL_ARRAY_BUFFER, im3DVbo);
glBufferData(GL_ARRAY_BUFFER, STARTVERTICES*sizeof(Im3DVertex), nil, GL_STREAM_DRAW);
#ifdef RW_GL_USE_VAOS
glGenVertexArrays(1, &im3DVao);
glBindVertexArray(im3DVao);
setAttribPointers(im3dattribDesc, 4);
#endif
}
void
closeIm3D(void)
{
glDeleteBuffers(1, &im3DIbo);
glDeleteBuffers(1, &im3DVbo);
#ifdef RW_GL_USE_VAOS
glDeleteVertexArrays(1, &im3DVao);
#endif
im3dShader->destroy();
im3dShader = nil;
}
// settable by user - TOOD: make this less shit
RGBA im3dMaterialColor = { 255, 255, 255, 255 };
SurfaceProperties im3dSurfaceProps = { 1.0f, 1.0f, 1.0f };
void
im3DTransform(void *vertices, int32 numVertices, Matrix *world, uint32 flags)
{
if(world == nil){
static Matrix ident;
ident.setIdentity();
world = &ident;
}
setWorldMatrix(world);
if(flags & im3d::LIGHTING){
setMaterial(im3dMaterialColor, im3dSurfaceProps);
int32 vsBits = lightingCB();
defaultShader_fullLight->use();
}else
im3dShader->use();
if((flags & im3d::VERTEXUV) == 0)
SetRenderStatePtr(TEXTURERASTER, nil);
#ifdef RW_GL_USE_VAOS
glBindVertexArray(im2DVao);
#endif
glBindBuffer(GL_ARRAY_BUFFER, im3DVbo);
glBufferData(GL_ARRAY_BUFFER, STARTVERTICES*sizeof(Im3DVertex), nil, GL_STREAM_DRAW);
glBufferSubData(GL_ARRAY_BUFFER, 0, numVertices*sizeof(Im3DVertex), vertices);
#ifndef RW_GL_USE_VAOS
setAttribPointers(im3dattribDesc, 4);
#endif
num3DVertices = numVertices;
}
void
im3DRenderPrimitive(PrimitiveType primType)
{
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, im3DIbo);
flushCache();
glDrawArrays(primTypeMap[primType], 0, num3DVertices);
}
void
im3DRenderIndexedPrimitive(PrimitiveType primType, void *indices, int32 numIndices)
{
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, im3DIbo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, STARTINDICES*2, nil, GL_STREAM_DRAW);
glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, numIndices*2, indices);
flushCache();
glDrawElements(primTypeMap[primType], numIndices,
GL_UNSIGNED_SHORT, nil);
}
void
im3DEnd(void)
{
#ifndef RW_GL_USE_VAOS
disableAttribPointers(im3dattribDesc, 4);
#endif
}
}
}
#endif
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