ShuriZma
/
desmume
mirror of https://github.com/TASEmulators/desmume.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

OpenGL ES Renderer: Add a new OpenGL ES 3.0 renderer.

This commit is contained in:
rogerman 2024-07-09 23:00:27 -07:00
parent 0e88f9aa94
commit 3a6f2f6dc5
3 changed files with 966 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
desmume/src/OGLRender_3_2.h
View File

@ -36,6 +36,25 @@ extern const char *FogFragShader_150;
extern const char *FramebufferOutputVtxShader_150;
extern const char *FramebufferOutput6665FragShader_150;
// A port that wants to use the OpenGL 3.2 renderer must assign the two following functions
// to OGLLoadEntryPoints_3_2_Func and OGLCreateRenderer_3_2_Func, respectively.
//
// In addition, the port must add the following GPU3DInterface objects to core3DList:
// - gpu3Dgl: Automatically selects the most fully featured version of standard OpenGL that
// is available on the host system, prefering OpenGL 3.2 Core Profile.
// - gpu3Dgl_3_2: Selects the OpenGL 3.2 Core Profile renderer, and returns an error if it
// is not available on the host system.
//
// Finally, the port must call GPU->Set3DRendererByID() and pass in the index where
// gpu3Dgl_3_2 exists in core3DList so that the emulator can create the appropriate
// OpenGLRenderer object.
//
// Example code:
// OGLLoadEntryPoints_3_2_Func = &OGLLoadEntryPoints_3_2;
// OGLCreateRenderer_3_2_Func = &OGLCreateRenderer_3_2;
// GPU3DInterface *core3DList[] = { &gpu3DNull, &gpu3DRasterize, &gpu3Dgl_3_2, NULL };
// GPU->Set3DRendererByID(2);
void OGLLoadEntryPoints_3_2();
void OGLCreateRenderer_3_2(OpenGLRenderer **rendererPtr);

889
desmume/src/OGLRender_ES3.cpp Normal file
View File

@ -0,0 +1,889 @@
/*
Copyright (C) 2024 DeSmuME team
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the this software. If not, see <http://www.gnu.org/licenses/>.
*/
#include "OGLRender_ES3.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <algorithm>
#include <string>
#include <sstream>
#include "utils/bits.h"
#include "common.h"
#include "debug.h"
#include "NDSSystem.h"
// Vertex shader for geometry, GLSL ES 3.00
static const char *GeometryVtxShader_ES300 = {"\
IN_VTX_POSITION vec4 inPosition;\n\
IN_VTX_TEXCOORD0 vec2 inTexCoord0;\n\
IN_VTX_COLOR vec3 inColor; \n\
\n\
#if IS_USING_UBO_POLY_STATES\n\
layout (std140) uniform PolyStates\n\
{\n\
ivec4 value[4096];\n\
} polyState;\n\
#elif IS_USING_TBO_POLY_STATES\n\
uniform highp isamplerBuffer PolyStates;\n\
#else\n\
uniform highp isampler2D PolyStates;\n\
#endif\n\
uniform mediump int polyIndex;\n\
uniform bool polyDrawShadow;\n\
\n\
out vec2 vtxTexCoord;\n\
out vec4 vtxColor;\n\
flat out lowp int polyID;\n\
flat out lowp int polyMode;\n\
flat out lowp int polyIsWireframe;\n\
flat out lowp int polyEnableFog;\n\
flat out lowp int polySetNewDepthForTranslucent;\n\
flat out lowp int polyEnableTexture;\n\
flat out lowp int texSingleBitAlpha;\n\
flat out lowp int polyIsBackFacing;\n\
flat out lowp int isPolyDrawable;\n\
\n\
void main()\n\
{\n\
#if IS_USING_UBO_POLY_STATES\n\
ivec4 polyStateVec = polyState.value[polyIndex >> 2];\n\
int polyStateBits = polyStateVec[polyIndex & 0x03];\n\
#elif IS_USING_TBO_POLY_STATES\n\
int polyStateBits = texelFetch(PolyStates, polyIndex).r;\n\
#else\n\
int polyStateBits = texelFetch(PolyStates, ivec2(polyIndex & 0x00FF, (polyIndex >> 8) & 0x007F), 0).r;\n\
#endif\n\
int texSizeShiftS = (polyStateBits >> 18) & 0x07;\n\
int texSizeShiftT = (polyStateBits >> 21) & 0x07;\n\
\n\
float polyAlpha = float((polyStateBits >> 8) & 0x1F) / 31.0;\n\
vec2 polyTexScale = vec2(1.0 / float(8 << texSizeShiftS), 1.0 / float(8 << texSizeShiftT));\n\
\n\
polyID = (polyStateBits >> 0) & 0x3F;\n\
polyMode = (polyStateBits >> 6) & 0x03;\n\
polyIsWireframe = (polyStateBits >> 13) & 0x01;\n\
polyEnableFog = (polyStateBits >> 14) & 0x01;\n\
polySetNewDepthForTranslucent = (polyStateBits >> 15) & 0x01;\n\
polyEnableTexture = (polyStateBits >> 16) & 0x01;\n\
texSingleBitAlpha = (polyStateBits >> 17) & 0x01;\n\
polyIsBackFacing = (polyStateBits >> 24) & 0x01;\n\
\n\
isPolyDrawable = int((polyMode != 3) || polyDrawShadow);\n\
\n\
mat2 texScaleMtx = mat2( vec2(polyTexScale.x, 0.0), \n\
vec2( 0.0, polyTexScale.y)); \n\
\n\
vtxTexCoord = (texScaleMtx * inTexCoord0) / 16.0;\n\
vtxColor = vec4(inColor / 63.0, polyAlpha);\n\
gl_Position = inPosition / 4096.0;\n\
}\n\
"};
// Fragment shader for geometry, GLSL ES 3.00
static const char *GeometryFragShader_ES300 = {"\
in vec2 vtxTexCoord;\n\
in vec4 vtxColor;\n\
flat in lowp int polyID;\n\
flat in lowp int polyMode;\n\
flat in lowp int polyIsWireframe;\n\
flat in lowp int polyEnableFog;\n\
flat in lowp int polySetNewDepthForTranslucent;\n\
flat in lowp int polyEnableTexture;\n\
flat in lowp int texSingleBitAlpha;\n\
flat in lowp int polyIsBackFacing;\n\
flat in lowp int isPolyDrawable;\n\
\n\
layout (std140) uniform RenderStates\n\
{\n\
bool enableAntialiasing;\n\
bool enableFogAlphaOnly;\n\
int clearPolyID;\n\
float clearDepth;\n\
float alphaTestRef;\n\
float fogOffset;\n\
float fogStep;\n\
float pad_0;\n\
vec4 fogColor;\n\
vec4 edgeColor[8];\n\
vec4 toonColor[32];\n\
} state;\n\
\n\
uniform sampler2D texRenderObject;\n\
uniform bool texDrawOpaque;\n\
uniform bool drawModeDepthEqualsTest;\n\
uniform bool polyDrawShadow;\n\
uniform float polyDepthOffset;\n\
\n\
OUT_COLOR vec4 outFragColor;\n\
\n\
#if DRAW_MODE_OPAQUE\n\
OUT_WORKING_BUFFER vec4 outDstBackFacing;\n\
#elif USE_DEPTH_LEQUAL_POLYGON_FACING\n\
uniform sampler2D inDstBackFacing;\n\
#endif\n\
\n\
#if ENABLE_EDGE_MARK\n\
OUT_POLY_ID vec4 outPolyID;\n\
#endif\n\
#if ENABLE_FOG\n\
OUT_FOG_ATTRIBUTES vec4 outFogAttributes;\n\
#endif\n\
\n\
void main()\n\
{\n\
#if USE_DEPTH_LEQUAL_POLYGON_FACING && !DRAW_MODE_OPAQUE\n\
bool isOpaqueDstBackFacing = bool( texelFetch(inDstBackFacing, ivec2(gl_FragCoord.xy), 0).r );\n\
if ( drawModeDepthEqualsTest && (bool(polyIsBackFacing) || !isOpaqueDstBackFacing) )\n\
{\n\
discard;\n\
}\n\
#endif\n\
\n\
vec4 mainTexColor = (ENABLE_TEXTURE_SAMPLING && bool(polyEnableTexture)) ? texture(texRenderObject, vtxTexCoord) : vec4(1.0, 1.0, 1.0, 1.0);\n\
\n\
if (!bool(texSingleBitAlpha))\n\
{\n\
if (texDrawOpaque)\n\
{\n\
if ( (polyMode != 1) && (mainTexColor.a <= 0.999) )\n\
{\n\
discard;\n\
}\n\
}\n\
else\n\
{\n\
if ( ((polyMode != 1) && (mainTexColor.a * vtxColor.a > 0.999)) || ((polyMode == 1) && (vtxColor.a > 0.999)) )\n\
{\n\
discard;\n\
}\n\
}\n\
}\n\
#if USE_TEXTURE_SMOOTHING\n\
else\n\
{\n\
if (mainTexColor.a < 0.500)\n\
{\n\
mainTexColor.a = 0.0;\n\
}\n\
else\n\
{\n\
mainTexColor.rgb = mainTexColor.rgb / mainTexColor.a;\n\
mainTexColor.a = 1.0;\n\
}\n\
}\n\
#endif\n\
\n\
outFragColor = mainTexColor * vtxColor;\n\
\n\
if (polyMode == 1)\n\
{\n\
outFragColor.rgb = (ENABLE_TEXTURE_SAMPLING && bool(polyEnableTexture)) ? mix(vtxColor.rgb, mainTexColor.rgb, mainTexColor.a) : vtxColor.rgb;\n\
outFragColor.a = vtxColor.a;\n\
}\n\
else if (polyMode == 2)\n\
{\n\
vec3 newToonColor = state.toonColor[int((vtxColor.r * 31.0) + 0.5)].rgb;\n\
#if TOON_SHADING_MODE\n\
outFragColor.rgb = min((mainTexColor.rgb * vtxColor.r) + newToonColor.rgb, 1.0);\n\
#else\n\
outFragColor.rgb = mainTexColor.rgb * newToonColor.rgb;\n\
#endif\n\
}\n\
else if ((polyMode == 3) && polyDrawShadow)\n\
{\n\
outFragColor = vtxColor;\n\
}\n\
\n\
if ( (isPolyDrawable != 0) && ((outFragColor.a < 0.001) || (ENABLE_ALPHA_TEST && outFragColor.a < state.alphaTestRef)) )\n\
{\n\
discard;\n\
}\n\
#if ENABLE_EDGE_MARK\n\
outPolyID = (isPolyDrawable != 0) ? vec4( float(polyID)/63.0, float(polyIsWireframe == 1), 0.0, float(outFragColor.a > 0.999) ) : vec4(0.0, 0.0, 0.0, 0.0);\n\
#endif\n\
#if ENABLE_FOG\n\
outFogAttributes = (isPolyDrawable != 0) ? vec4( float(polyEnableFog), 0.0, 0.0, float((outFragColor.a > 0.999) ? 1.0 : 0.5) ) : vec4(0.0, 0.0, 0.0, 0.0);\n\
#endif\n\
#if DRAW_MODE_OPAQUE\n\
outDstBackFacing = vec4(float(polyIsBackFacing), 0.0, 0.0, 1.0);\n\
#endif\n\
\n\
#if USE_NDS_DEPTH_CALCULATION || ENABLE_FOG\n\
// It is tempting to perform the NDS depth calculation in the vertex shader rather than in the fragment shader.\n\
// Resist this temptation! It is much more reliable to do the depth calculation in the fragment shader due to\n\
// subtle interpolation differences between various GPUs and/or drivers. If the depth calculation is not done\n\
// here, then it is very possible for the user to experience Z-fighting in certain rendering situations.\n\
\n\
#if ENABLE_W_DEPTH\n\
gl_FragDepth = clamp( ((1.0/gl_FragCoord.w) * (4096.0/16777215.0)) + polyDepthOffset, 0.0, 1.0 );\n\
#else\n\
// hack: when using z-depth, drop some LSBs so that the overworld map in Dragon Quest IV shows up correctly\n\
gl_FragDepth = clamp( (floor(gl_FragCoord.z * 4194303.0) * (4.0/16777215.0)) + polyDepthOffset, 0.0, 1.0 );\n\
#endif\n\
#endif\n\
}\n\
"};
void OGLLoadEntryPoints_ES_3_0()
{
OGLLoadEntryPoints_3_2();
}
void OGLCreateRenderer_ES_3_0(OpenGLRenderer **rendererPtr)
{
if (IsOpenGLDriverVersionSupported(3, 0, 0))
{
*rendererPtr = new OpenGLESRenderer_3_0;
(*rendererPtr)->SetVersion(3, 0, 0);
}
}
OpenGLESRenderer_3_0::OpenGLESRenderer_3_0()
{
_variantID = OpenGLVariantID_ES_3_0;
}
Render3DError OpenGLESRenderer_3_0::InitExtensions()
{
OGLRenderRef &OGLRef = *this->ref;
Render3DError error = OGLERROR_NOERR;
// Get OpenGL extensions
std::set<std::string> oglExtensionSet;
this->GetExtensionSet(&oglExtensionSet);
// Get host GPU device properties
GLint maxUBOSize = 0;
glGetIntegerv(GL_MAX_UNIFORM_BLOCK_SIZE, &maxUBOSize);
this->_is64kUBOSupported = (maxUBOSize >= 65536);
// TBOs are only supported in ES 3.2.
this->_isTBOSupported = IsOpenGLDriverVersionSupported(3, 2, 0);
GLfloat maxAnisotropyOGL = 1.0f;
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maxAnisotropyOGL);
this->_deviceInfo.maxAnisotropy = (float)maxAnisotropyOGL;
// OpenGL ES 3.0 needs to look up the best format and data type for glReadPixels.
glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &OGLRef.readPixelsBestFormat);
glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &OGLRef.readPixelsBestDataType);
this->_deviceInfo.isEdgeMarkSupported = true;
this->_deviceInfo.isFogSupported = true;
// Need to generate this texture first because FBO creation needs it.
// This texture is only required by shaders, and so if shader creation
// fails, then we can immediately delete this texture if an error occurs.
glGenTextures(1, &OGLRef.texFinalColorID);
glActiveTexture(GL_TEXTURE0 + OGLTextureUnitID_FinalColor);
glBindTexture(GL_TEXTURE_2D, OGLRef.texFinalColorID);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)this->_framebufferWidth, (GLsizei)this->_framebufferHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glActiveTexture(GL_TEXTURE0);
// OpenGL ES v3.0 should have all the necessary features to be able to flip and convert the framebuffer.
this->willFlipOnlyFramebufferOnGPU = true;
this->willFlipAndConvertFramebufferOnGPU = true;
this->_enableTextureSmoothing = CommonSettings.GFX3D_Renderer_TextureSmoothing;
this->_emulateShadowPolygon = CommonSettings.OpenGL_Emulation_ShadowPolygon;
this->_emulateSpecialZeroAlphaBlending = CommonSettings.OpenGL_Emulation_SpecialZeroAlphaBlending;
this->_emulateNDSDepthCalculation = CommonSettings.OpenGL_Emulation_NDSDepthCalculation;
this->_emulateDepthLEqualPolygonFacing = CommonSettings.OpenGL_Emulation_DepthLEqualPolygonFacing;
// Load and create shaders. Return on any error, since ES 3.0 makes shaders mandatory.
this->isShaderSupported = true;
error = this->CreateGeometryPrograms();
if (error != OGLERROR_NOERR)
{
glUseProgram(0);
this->DestroyGeometryPrograms();
this->isShaderSupported = false;
return error;
}
error = this->CreateGeometryZeroDstAlphaProgram(GeometryZeroDstAlphaPixelMaskVtxShader_150, GeometryZeroDstAlphaPixelMaskFragShader_150);
if (error != OGLERROR_NOERR)
{
glUseProgram(0);
this->DestroyGeometryPrograms();
this->isShaderSupported = false;
return error;
}
INFO("OpenGL: Successfully created geometry shaders.\n");
error = this->InitPostprocessingPrograms(EdgeMarkVtxShader_150,
EdgeMarkFragShader_150,
FramebufferOutputVtxShader_150,
FramebufferOutput6665FragShader_150,
NULL);
if (error != OGLERROR_NOERR)
{
glUseProgram(0);
this->DestroyGeometryPrograms();
this->DestroyGeometryZeroDstAlphaProgram();
this->isShaderSupported = false;
return error;
}
this->isVBOSupported = true;
this->CreateVBOs();
this->isPBOSupported = true;
this->CreatePBOs();
this->isVAOSupported = true;
this->CreateVAOs();
// Load and create FBOs. Return on any error, since v3.2 Core Profile makes FBOs mandatory.
this->isFBOSupported = true;
error = this->CreateFBOs();
if (error != OGLERROR_NOERR)
{
this->isFBOSupported = false;
return error;
}
this->isMultisampledFBOSupported = true;
this->_selectedMultisampleSize = CommonSettings.GFX3D_Renderer_MultisampleSize;
GLint maxSamplesOGL = 0;
glGetIntegerv(GL_MAX_SAMPLES, &maxSamplesOGL);
this->_deviceInfo.maxSamples = (u8)maxSamplesOGL;
if (this->_deviceInfo.maxSamples >= 2)
{
// Try and initialize the multisampled FBOs with the GFX3D_Renderer_MultisampleSize.
// However, if the client has this set to 0, then set sampleSize to 2 in order to
// force the generation and the attachments of the buffers at a meaningful sample
// size. If GFX3D_Renderer_MultisampleSize is 0, then we can deallocate the buffer
// memory afterwards.
GLsizei sampleSize = this->GetLimitedMultisampleSize();
if (sampleSize == 0)
{
sampleSize = 2;
}
error = this->CreateMultisampledFBO(sampleSize);
if (error != OGLERROR_NOERR)
{
this->isMultisampledFBOSupported = false;
}
// If GFX3D_Renderer_MultisampleSize is 0, then we can deallocate the buffers now
// in order to save some memory.
if (this->_selectedMultisampleSize == 0)
{
this->ResizeMultisampledFBOs(0);
}
}
else
{
this->isMultisampledFBOSupported = false;
INFO("OpenGL: Driver does not support at least 2x multisampled FBOs.\n");
}
this->_isDepthLEqualPolygonFacingSupported = true;
this->_enableMultisampledRendering = ((this->_selectedMultisampleSize >= 2) && this->isMultisampledFBOSupported);
this->InitFinalRenderStates(&oglExtensionSet); // This must be done last
return OGLERROR_NOERR;
}
Render3DError OpenGLESRenderer_3_0::CreateGeometryPrograms()
{
Render3DError error = OGLERROR_NOERR;
OGLRenderRef &OGLRef = *this->ref;
// Create shader resources.
if (OGLRef.uboRenderStatesID == 0)
{
glGenBuffers(1, &OGLRef.uboRenderStatesID);
glBindBuffer(GL_UNIFORM_BUFFER, OGLRef.uboRenderStatesID);
glBufferData(GL_UNIFORM_BUFFER, sizeof(OGLRenderStates), NULL, GL_DYNAMIC_DRAW);
glBindBufferBase(GL_UNIFORM_BUFFER, OGLBindingPointID_RenderStates, OGLRef.uboRenderStatesID);
}
if (this->_is64kUBOSupported)
{
// Try transferring the polygon states through a UBO first. This is the fastest method,
// but requires a GPU that supports 64k UBO transfers.
if (OGLRef.uboPolyStatesID == 0)
{
glGenBuffers(1, &OGLRef.uboPolyStatesID);
glBindBuffer(GL_UNIFORM_BUFFER, OGLRef.uboPolyStatesID);
glBufferData(GL_UNIFORM_BUFFER, MAX_CLIPPED_POLY_COUNT_FOR_UBO * sizeof(OGLPolyStates), NULL, GL_DYNAMIC_DRAW);
glBindBufferBase(GL_UNIFORM_BUFFER, OGLBindingPointID_PolyStates, OGLRef.uboPolyStatesID);
}
}
#ifdef GL_ES_VERSION_3_2
else if (this->_isTBOSupported)
{
// If for some reason the GPU doesn't support 64k UBOs but still supports OpenGL ES 3.2,
// then use a TBO as the second fastest method.
if (OGLRef.tboPolyStatesID == 0)
{
// Set up poly states TBO
glGenBuffers(1, &OGLRef.tboPolyStatesID);
glBindBuffer(GL_TEXTURE_BUFFER, OGLRef.tboPolyStatesID);
glBufferData(GL_TEXTURE_BUFFER, CLIPPED_POLYLIST_SIZE * sizeof(OGLPolyStates), NULL, GL_DYNAMIC_DRAW);
glGenTextures(1, &OGLRef.texPolyStatesID);
glActiveTexture(GL_TEXTURE0 + OGLTextureUnitID_PolyStates);
glBindTexture(GL_TEXTURE_BUFFER, OGLRef.texPolyStatesID);
glTexBuffer(GL_TEXTURE_BUFFER, GL_R32I, OGLRef.tboPolyStatesID);
glActiveTexture(GL_TEXTURE0);
}
}
#endif
else
{
// For compatibility reasons, we can transfer the polygon states through a plain old
// integer texture.
glGenTextures(1, &OGLRef.texPolyStatesID);
glActiveTexture(GL_TEXTURE0 + OGLTextureUnitID_PolyStates);
glBindTexture(GL_TEXTURE_2D, OGLRef.texPolyStatesID);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_R32I, 256, 128, 0, GL_RED_INTEGER, GL_INT, NULL);
glActiveTexture(GL_TEXTURE0);
}
glGenTextures(1, &OGLRef.texFogDensityTableID);
glActiveTexture(GL_TEXTURE0 + OGLTextureUnitID_LookupTable);
glBindTexture(GL_TEXTURE_2D, OGLRef.texFogDensityTableID);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, 32, 1, 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
glActiveTexture(GL_TEXTURE0);
OGLGeometryFlags programFlags;
programFlags.value = 0;
std::stringstream shaderHeader;
shaderHeader << "#version 300 es\n";
shaderHeader << "precision highp float;\n";
shaderHeader << "precision highp int;\n";
shaderHeader << "\n";
std::stringstream vsHeader;
vsHeader << "#define IN_VTX_POSITION layout (location = " << OGLVertexAttributeID_Position << ") in\n";
vsHeader << "#define IN_VTX_TEXCOORD0 layout (location = " << OGLVertexAttributeID_TexCoord0 << ") in\n";
vsHeader << "#define IN_VTX_COLOR layout (location = " << OGLVertexAttributeID_Color << ") in\n";
vsHeader << "\n";
vsHeader << "#define IS_USING_UBO_POLY_STATES " << ((OGLRef.uboPolyStatesID != 0) ? 1 : 0) << "\n";
vsHeader << "#define IS_USING_TBO_POLY_STATES " << ((OGLRef.tboPolyStatesID != 0) ? 1 : 0) << "\n";
vsHeader << "#define DEPTH_EQUALS_TEST_TOLERANCE " << DEPTH_EQUALS_TEST_TOLERANCE << ".0\n";
vsHeader << "\n";
std::string vtxShaderCode = shaderHeader.str() + vsHeader.str() + std::string(GeometryVtxShader_ES300);
for (size_t flagsValue = 0; flagsValue < 128; flagsValue++, programFlags.value++)
{
std::stringstream shaderFlags;
if (this->_isShaderFixedLocationSupported)
{
shaderFlags << "#define OUT_COLOR layout (location = 0) out\n";
shaderFlags << "#define OUT_WORKING_BUFFER layout (location = " << GeometryAttachmentWorkingBuffer[programFlags.DrawBuffersMode] << ") out\n";
shaderFlags << "#define OUT_POLY_ID layout (location = " << GeometryAttachmentPolyID[programFlags.DrawBuffersMode] << ") out\n";
shaderFlags << "#define OUT_FOG_ATTRIBUTES layout (location = " << GeometryAttachmentFogAttributes[programFlags.DrawBuffersMode] << ") out\n";
}
else
{
shaderFlags << "#define OUT_COLOR out\n";
shaderFlags << "#define OUT_WORKING_BUFFER out\n";
shaderFlags << "#define OUT_POLY_ID out\n";
shaderFlags << "#define OUT_FOG_ATTRIBUTES out\n";
}
shaderFlags << "\n";
shaderFlags << "#define USE_TEXTURE_SMOOTHING " << ((this->_enableTextureSmoothing) ? 1 : 0) << "\n";
shaderFlags << "#define USE_NDS_DEPTH_CALCULATION " << ((this->_emulateNDSDepthCalculation) ? 1 : 0) << "\n";
shaderFlags << "#define USE_DEPTH_LEQUAL_POLYGON_FACING " << ((this->_emulateDepthLEqualPolygonFacing) ? 1 : 0) << "\n";
shaderFlags << "\n";
shaderFlags << "#define ENABLE_W_DEPTH " << ((programFlags.EnableWDepth) ? 1 : 0) << "\n";
shaderFlags << "#define ENABLE_ALPHA_TEST " << ((programFlags.EnableAlphaTest) ? "true\n" : "false\n");
shaderFlags << "#define ENABLE_TEXTURE_SAMPLING " << ((programFlags.EnableTextureSampling) ? "true\n" : "false\n");
shaderFlags << "#define TOON_SHADING_MODE " << ((programFlags.ToonShadingMode) ? 1 : 0) << "\n";
shaderFlags << "#define ENABLE_FOG " << ((programFlags.EnableFog) ? 1 : 0) << "\n";
shaderFlags << "#define ENABLE_EDGE_MARK " << ((programFlags.EnableEdgeMark) ? 1 : 0) << "\n";
shaderFlags << "#define DRAW_MODE_OPAQUE " << ((programFlags.OpaqueDrawMode) ? 1 : 0) << "\n";
shaderFlags << "\n";
std::string fragShaderCode = shaderHeader.str() + shaderFlags.str() + std::string(GeometryFragShader_ES300);
error = this->ShaderProgramCreate(OGLRef.vertexGeometryShaderID,
OGLRef.fragmentGeometryShaderID[flagsValue],
OGLRef.programGeometryID[flagsValue],
vtxShaderCode.c_str(),
fragShaderCode.c_str());
if (error != OGLERROR_NOERR)
{
INFO("OpenGL: Failed to create the GEOMETRY shader program.\n");
glUseProgram(0);
this->DestroyGeometryPrograms();
return error;
}
glLinkProgram(OGLRef.programGeometryID[flagsValue]);
if (!this->ValidateShaderProgramLink(OGLRef.programGeometryID[flagsValue]))
{
INFO("OpenGL: Failed to link the GEOMETRY shader program.\n");
glUseProgram(0);
this->DestroyGeometryPrograms();
return OGLERROR_SHADER_CREATE_ERROR;
}
glValidateProgram(OGLRef.programGeometryID[flagsValue]);
glUseProgram(OGLRef.programGeometryID[flagsValue]);
// Set up render states UBO
const GLuint uniformBlockRenderStates = glGetUniformBlockIndex(OGLRef.programGeometryID[flagsValue], "RenderStates");
glUniformBlockBinding(OGLRef.programGeometryID[flagsValue], uniformBlockRenderStates, OGLBindingPointID_RenderStates);
GLint uboSize = 0;
glGetActiveUniformBlockiv(OGLRef.programGeometryID[flagsValue], uniformBlockRenderStates, GL_UNIFORM_BLOCK_DATA_SIZE, &uboSize);
assert(uboSize == sizeof(OGLRenderStates));
const GLint uniformTexRenderObject = glGetUniformLocation(OGLRef.programGeometryID[flagsValue], "texRenderObject");
glUniform1i(uniformTexRenderObject, 0);
if (OGLRef.uboPolyStatesID != 0)
{
const GLuint uniformBlockPolyStates = glGetUniformBlockIndex(OGLRef.programGeometryID[flagsValue], "PolyStates");
glUniformBlockBinding(OGLRef.programGeometryID[flagsValue], uniformBlockPolyStates, OGLBindingPointID_PolyStates);
}
else
{
const GLint uniformTexBufferPolyStates = glGetUniformLocation(OGLRef.programGeometryID[flagsValue], "PolyStates");
glUniform1i(uniformTexBufferPolyStates, OGLTextureUnitID_PolyStates);
}
if (this->_emulateDepthLEqualPolygonFacing && !programFlags.OpaqueDrawMode)
{
const GLint uniformTexBackfacing = glGetUniformLocation(OGLRef.programGeometryID[flagsValue], "inDstBackFacing");
glUniform1i(uniformTexBackfacing, OGLTextureUnitID_FinalColor);
}
OGLRef.uniformTexDrawOpaque[flagsValue] = glGetUniformLocation(OGLRef.programGeometryID[flagsValue], "texDrawOpaque");
OGLRef.uniformDrawModeDepthEqualsTest[flagsValue] = glGetUniformLocation(OGLRef.programGeometryID[flagsValue], "drawModeDepthEqualsTest");
OGLRef.uniformPolyDrawShadow[flagsValue] = glGetUniformLocation(OGLRef.programGeometryID[flagsValue], "polyDrawShadow");
OGLRef.uniformPolyStateIndex[flagsValue] = glGetUniformLocation(OGLRef.programGeometryID[flagsValue], "polyIndex");
OGLRef.uniformPolyDepthOffset[flagsValue] = glGetUniformLocation(OGLRef.programGeometryID[flagsValue], "polyDepthOffset");
}
return error;
}
Render3DError OpenGLESRenderer_3_0::CreateGeometryZeroDstAlphaProgram(const char *vtxShaderCString, const char *fragShaderCString)
{
Render3DError error = OGLERROR_NOERR;
OGLRenderRef &OGLRef = *this->ref;
if ( (vtxShaderCString == NULL) || (fragShaderCString == NULL) )
{
return error;
}
std::stringstream shaderHeader;
shaderHeader << "#version 300 es\n";
shaderHeader << "precision highp float;\n";
shaderHeader << "precision highp int;\n";
shaderHeader << "\n";
std::stringstream vsHeader;
vsHeader << "#define IN_VTX_POSITION layout (location = " << OGLVertexAttributeID_Position << ") in\n";
vsHeader << "#define IN_VTX_TEXCOORD0 layout (location = " << OGLVertexAttributeID_TexCoord0 << ") in\n";
vsHeader << "#define IN_VTX_COLOR layout (location = " << OGLVertexAttributeID_Color << ") in\n";
std::string vtxShaderCode = shaderHeader.str() + vsHeader.str() + std::string(vtxShaderCString);
std::string fragShaderCode = shaderHeader.str() + std::string(fragShaderCString);
error = this->ShaderProgramCreate(OGLRef.vtxShaderGeometryZeroDstAlphaID,
OGLRef.fragShaderGeometryZeroDstAlphaID,
OGLRef.programGeometryZeroDstAlphaID,
vtxShaderCode.c_str(),
fragShaderCode.c_str());
if (error != OGLERROR_NOERR)
{
INFO("OpenGL: Failed to create the GEOMETRY ZERO DST ALPHA shader program.\n");
glUseProgram(0);
this->DestroyGeometryZeroDstAlphaProgram();
return error;
}
glLinkProgram(OGLRef.programGeometryZeroDstAlphaID);
if (!this->ValidateShaderProgramLink(OGLRef.programGeometryZeroDstAlphaID))
{
INFO("OpenGL: Failed to link the GEOMETRY ZERO DST ALPHA shader program.\n");
glUseProgram(0);
this->DestroyGeometryZeroDstAlphaProgram();
return OGLERROR_SHADER_CREATE_ERROR;
}
glValidateProgram(OGLRef.programGeometryZeroDstAlphaID);
glUseProgram(OGLRef.programGeometryZeroDstAlphaID);
const GLint uniformTexGColor = glGetUniformLocation(OGLRef.programGeometryZeroDstAlphaID, "texInFragColor");
glUniform1i(uniformTexGColor, OGLTextureUnitID_GColor);
return OGLERROR_NOERR;
}
Render3DError OpenGLESRenderer_3_0::CreateEdgeMarkProgram(const char *vtxShaderCString, const char *fragShaderCString)
{
Render3DError error = OGLERROR_NOERR;
OGLRenderRef &OGLRef = *this->ref;
if ( (vtxShaderCString == NULL) || (fragShaderCString == NULL) )
{
return error;
}
std::stringstream shaderHeader;
shaderHeader << "#version 300 es\n";
shaderHeader << "precision highp float;\n";
shaderHeader << "precision highp int;\n";
shaderHeader << "\n";
shaderHeader << "#define FRAMEBUFFER_SIZE_X " << this->_framebufferWidth << ".0 \n";
shaderHeader << "#define FRAMEBUFFER_SIZE_Y " << this->_framebufferHeight << ".0 \n";
shaderHeader << "\n";
std::stringstream vsHeader;
vsHeader << "#define IN_VTX_POSITION layout (location = " << OGLVertexAttributeID_Position << ") in\n";
vsHeader << "#define IN_VTX_TEXCOORD0 layout (location = " << OGLVertexAttributeID_TexCoord0 << ") in\n";
vsHeader << "#define IN_VTX_COLOR layout (location = " << OGLVertexAttributeID_Color << ") in\n";
std::stringstream fsHeader;
fsHeader << "#define OUT_COLOR layout (location = 0) out\n";
std::string vtxShaderCode = shaderHeader.str() + vsHeader.str() + std::string(vtxShaderCString);
std::string fragShaderCode = shaderHeader.str() + fsHeader.str() + std::string(fragShaderCString);
error = this->ShaderProgramCreate(OGLRef.vertexEdgeMarkShaderID,
OGLRef.fragmentEdgeMarkShaderID,
OGLRef.programEdgeMarkID,
vtxShaderCode.c_str(),
fragShaderCode.c_str());
if (error != OGLERROR_NOERR)
{
INFO("OpenGL: Failed to create the EDGE MARK shader program.\n");
glUseProgram(0);
this->DestroyEdgeMarkProgram();
return error;
}
glLinkProgram(OGLRef.programEdgeMarkID);
if (!this->ValidateShaderProgramLink(OGLRef.programEdgeMarkID))
{
INFO("OpenGL: Failed to link the EDGE MARK shader program.\n");
glUseProgram(0);
this->DestroyEdgeMarkProgram();
return OGLERROR_SHADER_CREATE_ERROR;
}
glValidateProgram(OGLRef.programEdgeMarkID);
glUseProgram(OGLRef.programEdgeMarkID);
const GLuint uniformBlockRenderStates = glGetUniformBlockIndex(OGLRef.programEdgeMarkID, "RenderStates");
glUniformBlockBinding(OGLRef.programEdgeMarkID, uniformBlockRenderStates, OGLBindingPointID_RenderStates);
const GLint uniformTexGDepth = glGetUniformLocation(OGLRef.programEdgeMarkID, "texInFragDepth");
const GLint uniformTexGPolyID = glGetUniformLocation(OGLRef.programEdgeMarkID, "texInPolyID");
glUniform1i(uniformTexGDepth, OGLTextureUnitID_DepthStencil);
glUniform1i(uniformTexGPolyID, OGLTextureUnitID_GPolyID);
return OGLERROR_NOERR;
}
Render3DError OpenGLESRenderer_3_0::CreateFogProgram(const OGLFogProgramKey fogProgramKey, const char *vtxShaderCString, const char *fragShaderCString)
{
Render3DError error = OGLERROR_NOERR;
OGLRenderRef &OGLRef = *this->ref;
if (vtxShaderCString == NULL)
{
INFO("OpenGL: The FOG vertex shader is unavailable.\n");
error = OGLERROR_VERTEX_SHADER_PROGRAM_LOAD_ERROR;
return error;
}
else if (fragShaderCString == NULL)
{
INFO("OpenGL: The FOG fragment shader is unavailable.\n");
error = OGLERROR_FRAGMENT_SHADER_PROGRAM_LOAD_ERROR;
return error;
}
const s32 fogOffset = fogProgramKey.offset;
const GLfloat fogOffsetf = (GLfloat)fogOffset / 32767.0f;
const s32 fogStep = 0x0400 >> fogProgramKey.shift;
std::stringstream shaderHeader;
shaderHeader << "#version 300 es\n";
shaderHeader << "precision highp float;\n";
shaderHeader << "precision highp int;\n";
shaderHeader << "\n";
std::stringstream vsHeader;
vsHeader << "#define IN_VTX_POSITION layout (location = " << OGLVertexAttributeID_Position << ") in\n";
vsHeader << "#define IN_VTX_TEXCOORD0 layout (location = " << OGLVertexAttributeID_TexCoord0 << ") in\n";
vsHeader << "#define IN_VTX_COLOR layout (location = " << OGLVertexAttributeID_Color << ") in\n";
std::stringstream fsHeader;
fsHeader << "#define USE_DUAL_SOURCE_BLENDING " << ((this->_isDualSourceBlendingSupported) ? 1 : 0) << "\n";
fsHeader << "\n";
fsHeader << "#define FOG_OFFSET " << fogOffset << "\n";
fsHeader << "#define FOG_OFFSETF " << fogOffsetf << (((fogOffsetf == 0.0f) || (fogOffsetf == 1.0f)) ? ".0" : "") << "\n";
fsHeader << "#define FOG_STEP " << fogStep << "\n";
fsHeader << "\n";
fsHeader << "#define OUT_FOG_COLOR layout (location = 0, index = 0) out\n";
fsHeader << "#define OUT_FOG_WEIGHT layout (location = 0, index = 1) out\n";
fsHeader << "#define OUT_COLOR layout (location = 0) out\n";
std::string vtxShaderCode = shaderHeader.str() + vsHeader.str() + std::string(vtxShaderCString);
std::string fragShaderCode = shaderHeader.str() + fsHeader.str() + std::string(fragShaderCString);
OGLFogShaderID shaderID;
shaderID.program = 0;
shaderID.fragShader = 0;
error = this->ShaderProgramCreate(OGLRef.vertexFogShaderID,
shaderID.fragShader,
shaderID.program,
vtxShaderCode.c_str(),
fragShaderCode.c_str());
this->_fogProgramMap[fogProgramKey.key] = shaderID;
if (error != OGLERROR_NOERR)
{
INFO("OpenGL: Failed to create the FOG shader program.\n");
glUseProgram(0);
this->DestroyFogProgram(fogProgramKey);
return error;
}
glLinkProgram(shaderID.program);
if (!this->ValidateShaderProgramLink(shaderID.program))
{
INFO("OpenGL: Failed to link the FOG shader program.\n");
glUseProgram(0);
this->DestroyFogProgram(fogProgramKey);
return OGLERROR_SHADER_CREATE_ERROR;
}
glValidateProgram(shaderID.program);
glUseProgram(shaderID.program);
const GLuint uniformBlockRenderStates = glGetUniformBlockIndex(shaderID.program, "RenderStates");
glUniformBlockBinding(shaderID.program, uniformBlockRenderStates, OGLBindingPointID_RenderStates);
const GLint uniformTexGDepth = glGetUniformLocation(shaderID.program, "texInFragDepth");
const GLint uniformTexGFog = glGetUniformLocation(shaderID.program, "texInFogAttributes");
const GLint uniformTexFogDensityTable = glGetUniformLocation(shaderID.program, "texFogDensityTable");
glUniform1i(uniformTexGDepth, OGLTextureUnitID_DepthStencil);
glUniform1i(uniformTexGFog, OGLTextureUnitID_FogAttr);
glUniform1i(uniformTexFogDensityTable, OGLTextureUnitID_LookupTable);
const GLint uniformTexGColor = glGetUniformLocation(shaderID.program, "texInFragColor");
glUniform1i(uniformTexGColor, OGLTextureUnitID_GColor);
return OGLERROR_NOERR;
}
Render3DError OpenGLESRenderer_3_0::CreateFramebufferOutput6665Program(const size_t outColorIndex, const char *vtxShaderCString, const char *fragShaderCString)
{
Render3DError error = OGLERROR_NOERR;
OGLRenderRef &OGLRef = *this->ref;
if ( (vtxShaderCString == NULL) || (fragShaderCString == NULL) )
{
return error;
}
std::stringstream shaderHeader;
shaderHeader << "#version 300 es\n";
shaderHeader << "precision highp float;\n";
shaderHeader << "precision highp int;\n";
shaderHeader << "\n";
shaderHeader << "#define FRAMEBUFFER_SIZE_X " << this->_framebufferWidth << ".0 \n";
shaderHeader << "#define FRAMEBUFFER_SIZE_Y " << this->_framebufferHeight << ".0 \n";
shaderHeader << "\n";
std::stringstream vsHeader;
vsHeader << "#define IN_VTX_POSITION layout (location = " << OGLVertexAttributeID_Position << ") in\n";
vsHeader << "#define IN_VTX_TEXCOORD0 layout (location = " << OGLVertexAttributeID_TexCoord0 << ") in\n";
vsHeader << "#define IN_VTX_COLOR layout (location = " << OGLVertexAttributeID_Color << ") in\n";
std::stringstream fsHeader;
fsHeader << "#define OUT_COLOR layout (location = 0) out\n";
std::string vtxShaderCode = shaderHeader.str() + vsHeader.str() + std::string(vtxShaderCString);
std::string fragShaderCode = shaderHeader.str() + fsHeader.str() + std::string(fragShaderCString);
error = this->ShaderProgramCreate(OGLRef.vertexFramebufferOutput6665ShaderID,
OGLRef.fragmentFramebufferRGBA6665OutputShaderID,
OGLRef.programFramebufferRGBA6665OutputID[outColorIndex],
vtxShaderCode.c_str(),
fragShaderCode.c_str());
if (error != OGLERROR_NOERR)
{
INFO("OpenGL: Failed to create the FRAMEBUFFER OUTPUT RGBA6665 shader program.\n");
glUseProgram(0);
this->DestroyFramebufferOutput6665Programs();
return error;
}
glLinkProgram(OGLRef.programFramebufferRGBA6665OutputID[outColorIndex]);
if (!this->ValidateShaderProgramLink(OGLRef.programFramebufferRGBA6665OutputID[outColorIndex]))
{
INFO("OpenGL: Failed to link the FRAMEBUFFER OUTPUT RGBA6665 shader program.\n");
glUseProgram(0);
this->DestroyFramebufferOutput6665Programs();
return OGLERROR_SHADER_CREATE_ERROR;
}
glValidateProgram(OGLRef.programFramebufferRGBA6665OutputID[outColorIndex]);
glUseProgram(OGLRef.programFramebufferRGBA6665OutputID[outColorIndex]);
const GLint uniformTexGColor = glGetUniformLocation(OGLRef.programFramebufferRGBA6665OutputID[outColorIndex], "texInFragColor");
if (outColorIndex == 0)
{
glUniform1i(uniformTexGColor, OGLTextureUnitID_FinalColor);
}
else
{
glUniform1i(uniformTexGColor, OGLTextureUnitID_GColor);
}
return OGLERROR_NOERR;
}

58
desmume/src/OGLRender_ES3.h Normal file
View File

@ -0,0 +1,58 @@
/*
Copyright (C) 2024 DeSmuME team
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the this software. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef OGLRENDER_ES3_H
#define OGLRENDER_ES3_H
#include "OGLRender_3_2.h"
// A port that wants to use the OpenGL ES renderer must assign the two following functions
// to OGLLoadEntryPoints_ES_3_0_Func and OGLCreateRenderer_ES_3_0_Func, respectively.
//
// In addition, the port must add the following GPU3DInterface objects to core3DList:
// - gpu3Dgl_ES_3_0: Selects the OpenGL ES 3.0 renderer, and returns an error if it is
// not available on the host system.
//
// Finally, the port must call GPU->Set3DRendererByID() and pass in the index where
// gpu3Dgl_ES_3_0 exists in core3DList so that the emulator can create the appropriate
// OpenGLRenderer object.
//
// Example code:
// OGLLoadEntryPoints_ES_3_0_Func = &OGLLoadEntryPoints_ES_3_0;
// OGLCreateRenderer_ES_3_0_Func = &OGLCreateRenderer_ES_3_0;
// GPU3DInterface *core3DList[] = { &gpu3DNull, &gpu3DRasterize, &gpu3Dgl_ES_3_0, NULL };
// GPU->Set3DRendererByID(2);
void OGLLoadEntryPoints_ES_3_0();
void OGLCreateRenderer_ES_3_0(OpenGLRenderer **rendererPtr);
class OpenGLESRenderer_3_0 : public OpenGLRenderer_3_2
{
protected:
virtual Render3DError CreateGeometryPrograms();
virtual Render3DError CreateGeometryZeroDstAlphaProgram(const char *vtxShaderCString, const char *fragShaderCString);
virtual Render3DError CreateEdgeMarkProgram(const char *vtxShaderCString, const char *fragShaderCString);
virtual Render3DError CreateFogProgram(const OGLFogProgramKey fogProgramKey, const char *vtxShaderCString, const char *fragShaderCString);
virtual Render3DError CreateFramebufferOutput6665Program(const size_t outColorIndex, const char *vtxShaderCString, const char *fragShaderCString);
public:
OpenGLESRenderer_3_0();
virtual Render3DError InitExtensions();
};
#endif // OGLRENDER_ES3_H