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Graphics.cpp
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Graphics.cpp
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//
// Graphics.cpp - drawing routines
//
// Created on 10/31/12.
//
// Copyright (c) 2013-2016 Arthur Danskin
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#include "StdAfx.h"
#include "Graphics.h"
#include "Shaders.h"
#include "Event.h"
#ifndef ASSERT_MAIN_THREAD
#define ASSERT_MAIN_THREAD()
#endif
// #define DEBUG_RENDER (kDebugFlags&EDebug::GLERROR)
#define DEBUG_RENDER (globals.debugRender&DBG_GLERROR)
template struct TriMesh<VertexPosColor>;
template struct LineMesh<VertexPosColor>;
template struct MeshPair<VertexPosColor, VertexPosColor>;
#ifndef GL_CLAMP_TO_EDGE_SGIS
#define GL_CLAMP_TO_EDGE_SGIS GL_CLAMP_TO_EDGE
#endif
#ifndef GL_UNSIGNED_INT_8_8_8_8_REV
#define GL_UNSIGNED_INT_8_8_8_8_REV GL_BGRA
#endif
bool supports_ARB_Framebuffer_object = false;
static const uint kDebugFrames = 10;
extern int kHeadlessMode;
bool isGLExtensionSupported(const char *name)
{
static const char* val = (const char*) glGetString(GL_EXTENSIONS);
return str_contains(val, name);
}
uint graphicsDrawCount = 0;
uint gpuMemoryUsed = 0;
void deleteBufferInMainThread(GLuint buffer)
{
globals.deleteGLBuffers(1, &buffer);
}
static const char* getGLErrorString(GLenum err)
{
switch (err)
{
CASE_STR(GL_NO_ERROR);
CASE_STR(GL_INVALID_ENUM);
CASE_STR(GL_INVALID_VALUE);
CASE_STR(GL_INVALID_OPERATION);
CASE_STR(GL_OUT_OF_MEMORY);
default: return "UNKNOWN";
}
}
GLenum glReportError1(const char *file, uint line, const char *function)
{
ASSERT_MAIN_THREAD();
#if !IS_DEVEL
if (!DEBUG_RENDER && globals.frameStep > kDebugFrames)
return GL_NO_ERROR;
#endif
GLenum err = GL_NO_ERROR;
while ((err = glGetError()) != GL_NO_ERROR)
{
OLG_OnAssertFailed(file, line, function, "glGetError", "%s", getGLErrorString(err));
}
return err;
}
static string getGLFrameBufferStatusString(GLenum err)
{
switch(err) {
case 0: return "Error checking framebuffer status";
CASE_STR(GL_FRAMEBUFFER_COMPLETE);
CASE_STR(GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT);
CASE_STR(GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT);
CASE_STR(GL_FRAMEBUFFER_UNSUPPORTED);
#if OPENGL_ES
CASE_STR(GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS);
#else
CASE_STR(GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT);
CASE_STR(GL_FRAMEBUFFER_UNDEFINED);
CASE_STR(GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER);
CASE_STR(GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER);
CASE_STR(GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE);
CASE_STR(GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT);
CASE_STR(GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_EXT);
#endif
default: return str_format("0x%0x", err);
}
}
static GLenum glReportFramebufferError1(const char *file, uint line, const char *function)
{
ASSERT_MAIN_THREAD();
if (!DEBUG_RENDER && globals.frameStep > kDebugFrames)
return GL_NO_ERROR;
GLenum err = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (GL_FRAMEBUFFER_COMPLETE != err)
{
OLG_OnAssertFailed(file, line, function, "glCheckFramebufferStatus", "%s", getGLFrameBufferStatusString(err).c_str());
}
return err;
}
#define glReportFramebufferError() glReportFramebufferError1(__FILE__, __LINE__, __func__)
void GLScope::set(bool val)
{
DASSERT(type == BOOL);
if ((bool)current.bval == val)
return;
current.bval = val;
switch (enm)
{
case GL_DEPTH_WRITEMASK:
glDepthMask(val ? GL_TRUE : GL_FALSE);
break;
case GL_BLEND:
case GL_DEPTH_TEST:
case GL_ALPHA_TEST:
if (val)
glEnable(enm);
else
glDisable(enm);
break;
default:
ASSERT_FAILED("GLScope", "Unknown bool enum %#x", (int)enm);
}
}
void GLScope::set(float val)
{
DASSERT(type == FLOAT);
if (current.fval == val)
return;
current.fval = val;
switch (enm)
{
case GL_LINE_WIDTH:
glLineWidth(val);
break;
default:
ASSERT_FAILED("GLScope", "Unknown float enum %#x", (int)enm);
}
}
GLScope::~GLScope()
{
switch (type)
{
case BOOL: set((bool)saved.bval); break;
case FLOAT: set((float)saved.fval); break;
}
}
GLScopeBlend::GLScopeBlend(GLenum srgb, GLenum drgb,
GLenum salpha, GLenum dalpha)
{
if (salpha == 0)
salpha = srgb;
if (dalpha == 0)
dalpha = drgb;
glGetIntegerv(GL_BLEND_SRC_RGB, &src_color);
glGetIntegerv(GL_BLEND_DST_RGB, &dst_color);
glGetIntegerv(GL_BLEND_SRC_ALPHA, &src_alpha);
glGetIntegerv(GL_BLEND_DST_ALPHA, &dst_alpha);
changed = (srgb != src_color || drgb != dst_color || salpha != src_alpha || dalpha != dst_alpha);
if (changed)
glBlendFuncSeparate(srgb, drgb, salpha, dalpha);
}
GLScopeBlend::~GLScopeBlend()
{
if (changed)
glBlendFuncSeparate(src_color, dst_color, src_alpha, dst_alpha);
}
static bool ignoreShaderLog(const char* buf)
{
// damnit ATI driver
static string kNoErrors = "No errors.\n";
return (buf == kNoErrors ||
str_contains(buf, "Validation successful") ||
str_contains(buf, "successfully compiled") ||
str_contains(buf, "shader(s) linked."));
}
static void checkProgramInfoLog(GLuint prog, const char* name, LogRecorder *logger, const string &vtxt, const string &ftxt)
{
const uint bufsize = 2048;
char buf[bufsize];
GLsizei length = 0;
glGetProgramInfoLog(prog, bufsize, &length, buf);
if (length && !ignoreShaderLog(buf))
{
if (logger)
logger->Report(buf);
OLG_OnAssertFailed(name, -1, "", "", "GL Program Info log for '%s'\n%s%s\n: %s",
name, vtxt.c_str(), ftxt.c_str(), buf);
}
}
void glReportValidateShaderError1(const char *file, uint line, const char *function, GLuint program, const char *name)
{
ASSERT_MAIN_THREAD();
if (!DEBUG_RENDER && globals.frameStep > kDebugFrames)
return;
glValidateProgram(program);
GLint status = 0;
glGetProgramiv(program, GL_VALIDATE_STATUS, &status);
checkProgramInfoLog(program, "validate", NULL, string(), string());
glReportError1(file, line, function);
ASSERT_(status == GL_TRUE, file, line, function, "%s", name);
}
vector<GLRenderTexture*> GLRenderTexture::s_bound;
GLRenderTexture* GLRenderTexture::getBound(int idx)
{
return vec_at(s_bound, -idx - 1);
}
static const char* textureFormatToString(GLint fmt)
{
switch (fmt) {
CASE_STR(GL_RGB);
CASE_STR(GL_RGBA);
CASE_STR(GL_BGRA);
CASE_STR(GL_ALPHA);
CASE_STR(GL_LUMINANCE_ALPHA);
CASE_STR(GL_LUMINANCE);
#if OPENGL_ES
CASE_STR(GL_RGB16F_EXT);
#else
CASE_STR(GL_BGR);
CASE_STR(GL_RGBA16F_ARB);
CASE_STR(GL_RGB16F_ARB);
#endif
default: return "<unknown>";
}
}
static int textureFormatBytesPerPixel(GLint fmt)
{
switch (fmt) {
#if OPENGL_ES
case GL_RGB16F_EXT:
#else
case GL_RGB16F_ARB:
case GL_RGBA16F_ARB:
#endif
return 2 * 4;
case GL_LUMINANCE_ALPHA:
return 2;
case GL_LUMINANCE:
case GL_ALPHA:
return 1;
default:
return 4;
}
}
static GLint s_defaultFramebuffer = -1;
uint GLRenderTexture::getSizeBytes() const
{
uint size = GLTexture::getSizeBytes();
if (m_zflags&HASZ)
size += m_texsize.x * m_texsize.y * 2;
return size;
}
void GLRenderTexture::Generate(ZFlags zflags)
{
ASSERT_MAIN_THREAD();
ASSERT(m_size.x >= 1 && m_size.y >= 1);
GLsizei width = m_size.x;
GLsizei height = m_size.y;
#if OPENGL_ES
// textures must be a power of 2 on ios
width = roundUpPower2(width);
height = roundUpPower2(height);
#endif
if (s_defaultFramebuffer < 0 && !kHeadlessMode)
{
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &s_defaultFramebuffer);
}
m_texsize = float2(width, height);
DPRINT(SHADER, ("Generating render texture, %dx%d %s %s", width, height,
textureFormatToString(m_format), (zflags&HASZ) ? "Z16" : "No_Z"));
glReportError();
glGenFramebuffers(1, &m_fbname);
glReportError();
glGenTextures(1, &m_texname);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_texname);
glReportError();
#if OPENGL_ES
if (m_format == GL_RGBA16F_EXT)
{
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_HALF_FLOAT_OES, 0);
}
else
#endif
{
glTexImage2D(GL_TEXTURE_2D, 0, m_format, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
}
glReportError();
glBindFramebuffer(GL_FRAMEBUFFER, m_fbname);
glReportError();
// The depth buffer
if (zflags&HASZ)
{
glGenRenderbuffers(1, &m_zrbname);
glReportError();
glBindRenderbuffer(GL_RENDERBUFFER, m_zrbname);
glReportError();
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height);
glReportError();
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, m_zrbname);
glReportError();
}
else
{
m_zrbname = 0;
}
// Set "renderedTexture" as our colour attachement #0
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_texname, 0);
glReportError();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_texname);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
#if 0
// Set the list of draw buffers.
GLenum DrawBuffers[2] = {GL_COLOR_ATTACHMENT0};
glDrawBuffers(1, DrawBuffers); // "1" is the size of DrawBuffers
#endif
gpuMemoryUsed += getSizeBytes();
// Always check that our framebuffer is ok
glReportError();
glReportFramebufferError();
}
void GLRenderTexture::clear()
{
if (m_fbname)
globals.deleteGLFramebuffers(1, &m_fbname);
if (m_texname) {
globals.deleteGLTextures(1, &m_texname);
}
if (m_zrbname) {
globals.deleteGLRenderbuffers(1, &m_zrbname);
}
gpuMemoryUsed -= getSizeBytes();
m_size = float2(0.f);
m_texsize = float2(0.f);
m_texname = 0;
m_fbname = 0;
m_zrbname = 0;
}
#if __APPLE__
#define HAS_BLIT_FRAMEBUFFER 1
#else
#define HAS_BLIT_FRAMEBUFFER glBlitFramebuffer
#endif
void GLRenderTexture::BindFramebuffer(float2 size, ZFlags zflags)
{
ASSERT(!nearZero(size));
if (size != m_size || ((zflags&HASZ) && !(m_zflags&HASZ)))
clear();
m_size = size;
m_zflags = zflags;
if (!m_fbname)
Generate(zflags);
RebindFramebuffer();
#if !OPENGL_ES
const GLint def = s_bound.size() ? s_bound.back()->m_fbname : s_defaultFramebuffer;
if ((zflags == KEEPZ) && HAS_BLIT_FRAMEBUFFER && def >= 0)
{
ASSERT(def != m_fbname);
const float2 lastSize = s_bound.size() ? s_bound.back()->m_size : globals.windowSizePixels;
ASSERT(lastSize.x > 0.f && lastSize.y > 0.f);
glBindFramebuffer(GL_READ_FRAMEBUFFER, def);
glReportError();
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_fbname);
glReportError();
// only GL_NEAREST is supported for depth buffers
glBlitFramebuffer(0, 0, lastSize.x, lastSize.y, 0, 0, m_size.x, m_size.y,
GL_DEPTH_BUFFER_BIT, GL_NEAREST);
glReportError();
}
else
#endif
if (zflags&HASZ)
{
glClear(GL_DEPTH_BUFFER_BIT);
glReportError();
}
ASSERT(s_bound.empty() || s_bound.back() != this);
s_bound.push_back(this);
}
void GLRenderTexture::RebindFramebuffer()
{
ASSERT(m_size.x >= 1 && m_size.y >= 1);
ASSERT(m_fbname && m_texname);
BindTexture(0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE_SGIS);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE_SGIS);
glBindTexture(GL_TEXTURE_2D, 0);
glBindFramebuffer(GL_FRAMEBUFFER, m_fbname);
glReportFramebufferError();
glViewport(0,0,m_size.x,m_size.y);
glReportError();
}
void GLRenderTexture::UnbindFramebuffer() const
{
ASSERT(s_bound.size() && s_bound.back() == this);
s_bound.pop_back();
if (s_bound.size())
{
s_bound.back()->RebindFramebuffer();
}
else
{
glReportFramebufferError();
if (s_defaultFramebuffer >= 0)
{
glBindFramebuffer(GL_FRAMEBUFFER, s_defaultFramebuffer);
glReportError();
glReportFramebufferError();
glViewport(0, 0, globals.viewportSizePixels.x, globals.viewportSizePixels.y);
glReportError();
}
}
}
uint GLTexture::getSizeBytes() const
{
return m_texsize.x * m_texsize.y * textureFormatBytesPerPixel(m_format);
}
void GLTexture::clear()
{
if (m_texname)
{
gpuMemoryUsed -= getSizeBytes();
globals.deleteGLTextures(1, &m_texname);
}
m_texname = 0;
}
void GLTexture::TexImage2D(GLenum int_format, int2 size, GLenum format, GLenum type, const void *data)
{
if (!int_format)
{
switch (format)
{
case GL_RGBA: case GL_RGB:
case GL_LUMINANCE_ALPHA: case GL_LUMINANCE: case GL_ALPHA:
int_format = format;
break;
default:
case GL_BGRA:
int_format = GL_RGBA;
break;
case GL_BGR:
int_format = GL_RGB;
break;
}
}
m_format = int_format;
if (!m_texname) {
glGenTextures(1, &m_texname);
} else {
gpuMemoryUsed -= getSizeBytes();
}
glBindTexture(GL_TEXTURE_2D, m_texname);
#if OPENGL_ES
m_texsize = float2(roundUpPower2(size.x), roundUpPower2(size.y));
glTexImage2D(GL_TEXTURE_2D, 0, format,
m_texsize.x, m_texsize.y, 0, format, GL_UNSIGNED_BYTE, data);
#else
m_texsize = float2(size);
glTexImage2D(GL_TEXTURE_2D, 0, m_format,
size.x, size.y, 0, format, type, data);
#endif
glReportError();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE_SGIS);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE_SGIS);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glBindTexture(GL_TEXTURE_2D, 0);
m_size = float2(size);
gpuMemoryUsed += getSizeBytes();
}
void GLTexture::SetTexWrap(bool enable)
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_texname);
const GLint param = enable ? GL_REPEAT : GL_CLAMP_TO_EDGE;
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, param);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, param);
}
void GLTexture::SetTexMagFilter(GLint filter)
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_texname);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
}
void GLTexture::GenerateMipmap()
{
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_texname);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glGenerateMipmap(GL_TEXTURE_2D);
glReportError();
}
bool GLTexture::loadFile(const char* fname)
{
clear();
OutlawImage image = OL_LoadImage(fname);
if (!image.data)
return false;
TexImage2D(image);
m_flipped = true;
glBindTexture(GL_TEXTURE_2D, m_texname);
glGenerateMipmap(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
OL_FreeImage(&image);
return true;
}
bool GLTexture::loadImage(OutlawImage *img)
{
DPRINT(SHADER, ("Loading %dx%d image: %s", img->width, img->height,
img->data ? "OK" : "FAILED"));
clear();
if (!img->data)
return false;
TexImage2D(*img);
m_flipped = false;
GenerateMipmap();
return true;
}
static void invert_image(uint *pix, int width, int height)
{
for (int y=0; y<height/2; y++)
{
for (int x=0; x<width; x++)
{
const int top = y * width + x;
const int bot = (height - y - 1) * width + x;
const uint temp = pix[top];
pix[top] = pix[bot];
pix[bot] = temp;
}
}
}
bool GLTexture::writeFile(const char *fname) const
{
#if OPENGL_ES
return false;
#else
const int2 sz = ceil_int(m_texsize);
const size_t size = sz.x * sz.y * 4;
if (size == 0 || m_texname == 0)
return false;
uint *pix = (uint*) malloc(size);
OutlawImage img = {};
img.width = sz.x;
img.height = sz.y;
img.format = GL_RGBA;
img.type = GL_UNSIGNED_BYTE;
img.data = (char*) pix;
BindTexture(0);
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, pix);
glReportError();
invert_image(pix, sz.x, sz.y);
const int success = OL_SaveImage(&img, fname);
free(pix);
return success;
#endif
}
GLTexture PixImage::uploadTexture() const
{
GLTexture tex;
tex.TexImage2D(GL_RGBA, m_size, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, &m_data[0]);
return tex;
}
ShaderProgramBase::ShaderProgramBase()
{
}
ShaderProgramBase::~ShaderProgramBase()
{
reset();
}
static const char* getShaderName(GLenum type)
{
switch (type) {
case GL_VERTEX_SHADER: return "Vertex Shader";
case GL_FRAGMENT_SHADER: return "Fragment Shader";
default: return "";
}
}
GLuint ShaderProgramBase::createShader(const char* txt, GLenum type, LogRecorder *logger) const
{
GLuint idx = glCreateShader(type);
glShaderSource(idx, 1, &txt, NULL);
glCompileShader(idx);
{
const uint bufsize = 2048;
char buf[bufsize];
GLsizei length = 0;
glGetShaderInfoLog(idx, bufsize, &length, buf);
if (length && !ignoreShaderLog(buf))
{
ASSERT(length < bufsize);
if (logger)
logger->ReportLines(str_format("GL %s Info Log for %s:\n%s\n%s",
getShaderName(type), m_name.c_str(),
str_add_line_numbers(txt).c_str(), buf));
OLG_OnAssertFailed(m_name.c_str(), -1, "", "glCompileShader",
"GL %s Info Log for %s:\n%s\n%s", m_name.c_str(),
str_add_line_numbers(txt).c_str(), getShaderName(type), buf);
}
}
GLint val = 0;
glGetShaderiv(idx, GL_COMPILE_STATUS, &val);
if (val == GL_FALSE) {
glDeleteShader(idx);
return 0;
}
return idx;
}
GLint ShaderProgramBase::getAttribLocation(const char *name) const
{
if (!isLoaded())
return -1;
GLint v = glGetAttribLocation(m_programHandle, name);
ASSERTF(v >= 0, "%s::%s", m_name.c_str(), name);
glReportError();
return v;
}
GLint ShaderProgramBase::getUniformLocation(const char *name) const
{
if (!isLoaded())
return -1;
GLint v = glGetUniformLocation(m_programHandle, name);
ASSERTF(v >= 0, "%s::%s", m_name.c_str(), name);
glReportError();
return v;
}
void ShaderProgramBase::reset()
{
ASSERT_MAIN_THREAD();
if (m_programHandle) {
glDeleteProgram(m_programHandle);
m_programHandle = 0;
m_name = "";
}
}
bool ShaderProgramBase::LoadProgram(const char* name, const char* shared, const char *vertf, const char *fragf, LogRecorder *logger)
{
ASSERT_MAIN_THREAD();
m_name = name;
DPRINT(SHADER, ("Compiling %s(%s)", name, m_argstr.c_str()));
string header =
#if OPENGL_ES
"precision highp float;\n"
"precision highp sampler2D;\n"
#else
"#version 120\n"
#endif
"#define M_PI 3.1415926535897932384626433832795\n";
header += m_header + "\n";
header += shared;
header += "\n";
static const char* vertheader =
"attribute vec4 Position;\n"
"uniform mat4 Transform;\n"
"uniform float Time;\n";
static const char* fragheader = "uniform float Time;\n";
string vertful = header + vertheader + vertf;
string fragful = header + fragheader + fragf;
GLuint vert = createShader(vertful.c_str(), GL_VERTEX_SHADER, logger);
GLuint frag = createShader(fragful.c_str(), GL_FRAGMENT_SHADER, logger);
if (!vert || !frag)
return false;
if (m_programHandle) {
DPRINT(SHADER, ("Deleting old %s", name));
glDeleteProgram(m_programHandle);
}
m_programHandle = glCreateProgram();
ASSERTF(m_programHandle, "%s", m_name.c_str());
if (!m_programHandle)
return false;
glGetError();
glAttachShader(m_programHandle, vert);
glReportError();
glAttachShader(m_programHandle, frag);
glReportError();
glLinkProgram(m_programHandle);
glReportError();
glDeleteShader(vert);
glReportError();
glDeleteShader(frag);
glReportError();
checkProgramInfoLog(m_programHandle, name, logger, vertful, fragful);
GLint linkSuccess = 0;
glGetProgramiv(m_programHandle, GL_LINK_STATUS, &linkSuccess);
if (linkSuccess == GL_FALSE) {
DPRINT(SHADER, ("Compiling %s failed", name));
glDeleteProgram(m_programHandle);
m_programHandle = 0;
return false;
}
a_position = glGetAttribLocation(m_programHandle, "Position");
u_transform = glGetUniformLocation(m_programHandle, "Transform");
u_time = glGetUniformLocation(m_programHandle, "Time");
u_toPixels = glGetUniformLocation(m_programHandle, "ToPixels");
u_resolution = glGetUniformLocation(m_programHandle, "Resolution");
u_tex = glGetUniformLocation(m_programHandle, "ShaderTex");
u_tex_res = glGetUniformLocation(m_programHandle, "ShaderTexRes");
return true;
}
void ShaderProgramBase::UseProgramBase(const ShaderState& ss, uint size, const float3* pos) const
{
UseProgramBase(ss);
if (a_position >= 0) {
glEnableVertexAttribArray(a_position);
vap1(a_position, size, pos);
glReportError();
}
}
void ShaderProgramBase::UseProgramBase(const ShaderState& ss, uint size, const float2* pos) const
{
UseProgramBase(ss);
if (a_position >= 0) {
glEnableVertexAttribArray(a_position);
vap1(a_position, size, pos);
glReportError();
}
}
// Mods.cpp
const GLTexture *load_index_texture(const string &str);
void ShaderProgramBase::UseProgramBase(const ShaderState& ss) const
{
ASSERT_MAIN_THREAD();
ASSERTF(isLoaded(), "%s", m_name.c_str());
glReportError();
glUseProgram(m_programHandle);
glUniformMatrix4fv(u_transform, 1, GL_FALSE, &ss.uTransform[0][0]);
if (u_time >= 0)
glUniform1f(u_time, globals.renderTime);
if (u_toPixels >= 0)
glUniform1f(u_toPixels, ss.toPixels);
if (u_resolution >= 0)
glUniform2f(u_resolution, ss.resolution.x, ss.resolution.y);
if (u_tex >= 0 && m_texname.size()) {
const GLTexture *tex = load_index_texture(m_texname);
if (tex)
{
glUniform1i(u_tex, 3);
tex->BindTexture(3);
if (u_tex_res >= 0)
glUniform2f(u_tex_res, tex->size().x, tex->size().y);
}
}
glReportError();
}
void ShaderProgramBase::UnuseProgram() const
{
ASSERT_MAIN_THREAD();
glReportValidateShaderError(m_programHandle, m_name.c_str());
if (a_position >= 0) {
glDisableVertexAttribArray(a_position);
}
foreach (GLuint slot, m_enabledAttribs)
glDisableVertexAttribArray(slot);
m_enabledAttribs.clear();
glUseProgram(0);
}
void ShaderState::DrawElements(GLenum dt, size_t ic, const ushort* i) const
{
ASSERT_MAIN_THREAD();
glDrawElements(dt, (GLsizei) ic, GL_UNSIGNED_SHORT, i);
glReportError();
graphicsDrawCount++;
}
void ShaderState::DrawElements(uint dt, size_t ic, const uint* i) const
{
GLint program = 0;
glGetIntegerv(GL_CURRENT_PROGRAM, &program);
glReportValidateShaderError(program, "x");
ASSERT_MAIN_THREAD();
glDrawElements(dt, (GLsizei) ic, GL_UNSIGNED_INT, i);
glReportError();
graphicsDrawCount++;
glReportValidateShaderError(program, "x");
}
void ShaderState::DrawArrays(uint dt, size_t count) const
{
ASSERT_MAIN_THREAD();
glDrawArrays(dt, 0, (GLsizei)count);
glReportError();
graphicsDrawCount++;
}
void DrawAlignedGrid(ShaderState &wss, const View& view, float size, float z)
{
const double2 roundedCam = double2(round(view.position, size));
const double2 roundedSize = double2(round(0.5f * view.getWorldSize(z), size) + float2(size));
ShaderUColor::instance().DrawGrid(wss, size,
double3(roundedCam - roundedSize, z),
double3(roundedCam + roundedSize, z));
}
void ShaderPosBase::DrawGrid(const ShaderState &ss_, double width, double3 first, double3 last) const
{
ShaderState ss = ss_;
ss.translateZ(first.z);
uint xCount = ceil_int((last.x - first.x) / width);
uint yCount = ceil_int((last.y - first.y) / width);
float2 *v = new float2[2 * (xCount + yCount)];
float2 *pv = v;
for (uint x=0; x<xCount; x++)
{
pv->x = first.x + x * width;
pv->y = first.y;
pv++;
pv->x = first.x + x * width;
pv->y = last.y;
pv++;
}
for (uint y=0; y<yCount; y++)
{
pv->x = first.x;
pv->y = first.y + y * width;
pv++;
pv->x = last.x;
pv->y = first.y + y * width;
pv++;
}
UseProgram(ss, v);
ss.DrawArrays(GL_LINES, 2 * (xCount + yCount));
UnuseProgram();
delete[] v;
}
DEFINE_CVAR(float, kButtonCorners, 0.1f);
// rectangle missing 2 corners
void PushButton(TriMesh<VertexPosColor>* triP, LineMesh<VertexPosColor>* lineP, float2 pos, float2 r, uint bgColor, uint fgColor, float alpha)
{
const float2 v[6] = { pos + float2(-r.x, lerp(r.y, -r.y, kButtonCorners)),
pos + float2(lerp(-r.x, r.x, kButtonCorners), r.y),
pos + float2(r.x, r.y),
pos + float2(r.x, lerp(-r.y, r.y, kButtonCorners)),